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WO2004046825A1 - Deformable colour photographic silver halide material. - Google Patents

Deformable colour photographic silver halide material. Download PDF

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Publication number
WO2004046825A1
WO2004046825A1 PCT/EP2003/050819 EP0350819W WO2004046825A1 WO 2004046825 A1 WO2004046825 A1 WO 2004046825A1 EP 0350819 W EP0350819 W EP 0350819W WO 2004046825 A1 WO2004046825 A1 WO 2004046825A1
Authority
WO
WIPO (PCT)
Prior art keywords
silver halide
colour photographic
halide emulsion
alkyl
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2003/050819
Other languages
French (fr)
Inventor
Cuong Ly
Markus Geiger
Leon Vermeulen
Arno Schmuck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert NV
Agfa Gevaert AG
AgfaPhoto GmbH
Original Assignee
Agfa Gevaert NV
Agfa Gevaert AG
AgfaPhoto GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agfa Gevaert NV, Agfa Gevaert AG, AgfaPhoto GmbH filed Critical Agfa Gevaert NV
Priority to EP03796011A priority Critical patent/EP1616221A1/en
Priority to AU2003298283A priority patent/AU2003298283A1/en
Publication of WO2004046825A1 publication Critical patent/WO2004046825A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/76Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/91Photosensitive materials characterised by the base or auxiliary layers characterised by subbing layers or subbing means
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C11/00Auxiliary processes in photography
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/005Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08Sensitivity-increasing substances
    • G03C1/09Noble metals or mercury; Salts or compounds thereof; Sulfur, selenium or tellurium, or compounds thereof, e.g. for chemical sensitising
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/005Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08Sensitivity-increasing substances
    • G03C1/10Organic substances
    • G03C1/12Methine and polymethine dyes
    • G03C1/14Methine and polymethine dyes with an odd number of CH groups
    • G03C1/16Methine and polymethine dyes with an odd number of CH groups with one CH group
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/005Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/035Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein characterised by the crystal form or composition, e.g. mixed grain
    • G03C2001/03517Chloride content
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/005Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/035Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein characterised by the crystal form or composition, e.g. mixed grain
    • G03C2001/03535Core-shell grains
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/005Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/035Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein characterised by the crystal form or composition, e.g. mixed grain
    • G03C2001/03594Size of the grains
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/005Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08Sensitivity-increasing substances
    • G03C1/09Noble metals or mercury; Salts or compounds thereof; Sulfur, selenium or tellurium, or compounds thereof, e.g. for chemical sensitising
    • G03C2001/093Iridium
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C7/00Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/30Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/3022Materials with specific emulsion characteristics, e.g. thickness of the layers, silver content, shape of AgX grains
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C7/00Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/30Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/392Additives
    • G03C7/39208Organic compounds
    • G03C7/3924Heterocyclic
    • G03C7/39244Heterocyclic the nucleus containing only nitrogen as hetero atoms
    • G03C7/3926Heterocyclic the nucleus containing only nitrogen as hetero atoms four or more nitrogen atoms

Definitions

  • the present invention relates to a deformable material for producing a deformed image without significant image degradation, said material has a good storage stability and is suitable for digital exposure with very short pixeltimes, large formats and automatic processing.
  • Deformable materials with colour and/or black and white motives are used e.g. as protective and/or decorative foils particularly in the furniture industry, in which they are used as design elements to cover low- priced and/or light weight carrier materials and/or carrier materials that are critical to the conditions of their use; the configuration of deformable material and carrier material replacing much more expensive and/or heavier and/or less easier to handle and/or less resistant materials such as real wood, stainless steel or marble.
  • the manufacture of deformed plastic pieces with any kind of representations like images, designs, patterns, letters and so forth usually proceeds by printing on an undeformed flat foil of a thermoplastic polymer and is then deformed using heat and pressure.
  • the results obtained are unsatisfactory, because the printed pieces after deformation exhibit a loss in image quality, that is visible at all parts where the deformation has led to an elongation of the deformed material.
  • a significant loss in image quality is observed after deformation at curved parts and still more so at sharp edges, which is particularly noticeable as a bright line and/or increase granularity following the curves and/or edges in homogeneously coloured dark areas, which is unacceptable, particularly in the case of decorated furniture.
  • the printing processes require complicated prepress steps and are therefore expensive and are not suitable for the manufacture of individual designs with small production runs.
  • Photographic layers which were laminated onto a support, have, for example, been disclosed in EP-A 0 250 657, US 3,871,119, EP-A 0 490 416 and EP-A 0 276 506 for the manufacture of materials for identity cards and in EP-A 1 189 108 have been disclosed for materials with a broader colour gamut.
  • the layers can subsequently be covered with a protective foil, as disclosed, for example, in US 4,370,397 and GB 2,121,812.
  • the disclosed ID-cards are all flat, so that there are no requirements regarding deformability and their suitability or otherwise therefor was not disclosed.
  • laminatable photographic layers those with special binders have been disclosed, although neither of these options produces an optimum image quality.
  • graininess realized with state of the art laminatable materials is unacceptably high.
  • the DTR materials that are also known to be laminatable are not suitable for the furniture industry, because the two-sheet process has not been adapted to the large format automated processing needed in this field.
  • colour photographic materials comprising on a support at least one blue- sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red- sensitive silver halide emulsion layer containing at least one cyan coupler.
  • a support for reflective material paper coated on both sides with polyethylene and for transparent materials longitudinally and laterally stretched polyester is usually used. The deformation according to the present invention of such colour photographic materials is not possible.
  • GB 2,321,977 and the corresponding W098/35269 disclose a mouldable photographic material comprising a thermoplastic base sheet, a primer layer providing a key for a light sensitive layer, and a protective thermoplastic foil, the foil being bonded to the light sensitive layer with an optical quality adhesive.
  • a pixel is the smallest image area on the copying material, which can be addressed by the exposure apparatus .
  • Conventional silver halide emulsions exhibit a too low sensitivity, due to an unsatisfactory reciprocity, which results in a too low contrast and insufficient maximum * density at such short exposure times .
  • a similar reciprocity failure is also observed at exposure times above 10 s (long exposure times) , which are necessary for analogue exposure of large formats.
  • the known deformable photographic materials are unsatisfactory with regard to the storage stability of the unexposed and unprocessed materials, in particular when the support of the photographic material contains additives like plastizisers, stabilizers, and so forth.
  • a further advantage of the present invention compared to printing processes is the possibility to produce even single pieces as a proof or demonstration example.
  • the deformable colour photographic recording material of the present invention is suitable for digital exposure even at pixel times lower then 200 ns, exhibits a very good storage stability of the unexposed and unprocessed material and gives high quality images
  • said colour photographic silver halide material comprising on a deformable plastic support at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green- sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, wherein the silver halide emulsions have an overall silver chloride content of at least 95 mol% and at least one silver halide emulsion contains silver halide crystals that are doped with 10 to 700 nmol, preferably 10 to 500 nmol Ir.
  • gelatin can be successfully used in the materials used in the process according to the present invention.
  • the reason why the use of gelatin failed according to FR 968 638, but surprisingly was very successful for the present invention, may be the difference between single layer black and white materials like those described in FR 968 638, that essentially only contain silver halide crystals dispersed in the binder, and multilayer colour photographic materials according to the present invention, that also comprise softer materials like couplers in their layers .
  • aspects of the present invention are realized with a deformable colour photographic silver halide material, the colour photographic silver halide material comprising on a deformable plastic support at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green- sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, wherein the silver halide emulsions have an overall silver chloride content of at least 95 mol% and at least one silver halide emulsion contains silver halide crystals that are doped with 10 to 700 nmol iridium.
  • aspects of the present invention are also realized with a process for producing a deformed image comprising the steps of: exposing the above-mentioned colour photographic silver halide material, preferably digitally; conventionally processing the exposed colour photographic material to produce an image; and deforming the colour photographic material .
  • a process for producing a deformed image comprising the steps of: exposing the above-mentioned colour photographic silver halide material, preferably digitally; conventionally processing the exposed colour photographic material to produce an image; and deforming the colour photographic material .
  • deformation also known as moulding
  • deformation refers to three-dimensional deformation in which an initially flat object e.g. a plate or a sheet is deformed to a three dimensional shape using a shaping tool to which pressure and/or heat is applied, in the course of which at least a part of the initially flat object is elongated (stretched) , the shape being maintained upon cooling and/or upon releasing the pressure.
  • the out-of-plane deformation is usually of a greater measure than the thickness of the initially flat object, the thickness being defined as the distance between the surface to which the tool is applied and the opposite surface of the initially flat object.
  • deformable as used in qualifying colour photographic silver halide material is the ability to undergo deformation as defined above.
  • the term to deform means the process of deformation.
  • deformable plastic as used in disclosing the present invention includes all polymers, which can be deformed, without fracturing, exhibiting cracks or thermally decomposing.
  • deformable plastic includes all polymers, that are available in foil form and that are not stretched.
  • conventional processing means chromogenic chemical colour processing as used for the processing of conventional photographic materials such as color papers, color films or display materials and is further specified in the following description.
  • immediate and fast hardeners mean that the hardener is capable of hardening gelatin immediately after coating or at least several days after coating to such an extent that no further changes in sensitometry and swelling behaviour due to the presence of hardener occur.
  • swelling is meant the difference between wet layer thickness and dry layer thickness upon aqueous processing of the material .
  • silver nitrate (equivalent to AgX present) is used in the examples to characterize the silver halide emulsions means the weight of silver nitrate in a given amount of silver halide emulsion that results when the quantity of silver halide in the emulsion is hypothetically converted into the equivalent weight of silver nitrate.
  • aspects of the present invention are also realized with a process for producing a deformed image comprising the steps of: exposing the above-mentioned colour photographic silver halide material, according to the present invention, preferably digitally; conventionally processing the exposed colour photographic material to produce an image; and deforming the colour photographic material .
  • exposing the above-mentioned colour photographic silver halide material preferably digitally
  • conventionally processing the exposed colour photographic material to produce an image
  • deforming the colour photographic material There are commonly used apparatus available for exposure and conventional processing of the photographic material of the present inventions that are able to process long and wide sheets as well as wide rolls of the material as are needed e.g. in the furniture industry.
  • Exposure preferably is carried out digitally and proceeds preferably from the side remote from the support, but in the case of a transparent or slightly coloured support exposure can also be carried out through the support if a loss in sharpness is tolerable.
  • the material comprises an antihalation layer, that is bleached during the chemical processing of the material.
  • Suitable absorbing material for said antihalation layer is described in Research Disclosure 38 957, 1996, VIII., from page 610, herein incorporated by reference.
  • the antihalation layer has to be arranged on the side of the emulsion layers remote from the light source .
  • the support is provided on the image side between the silver halide layers and the support with a layer reflecting white light and on the opposite side with a non-bleachable black antihalation layer as described in US 4 224 402, herein incorporated by reference.
  • the conventional processing of the colour photographic material is carried out with development times between 15 and 130 s. Longer development times are necessary, if, for example, silver-rich materials are processed in order to attain a particularly high colour density.
  • Deformable plastics are those which can be deformed, without fracturing, exhibiting cracks or thermally decomposing. All polymers, that are available in foil form and that are not stretched fall under the term deformable plastics .
  • a good reference point for the temperature necessary for deformation is the glass transition temperature (Tg) .
  • Deformation is usually done between the glass transition temperature and the melting point of the deformable plastic.
  • the pressure needed for deformation can easily be tested; the higher the deformation temperature is with respect to the glass transition temperature, the lower the pressure needed. Just below the melting point only a very low pressure is needed.
  • the time needed for the deformation can also be easily tested and adjusted. A higher temperature and/or a higher pressure results in a shorter time.
  • Suitable support materials e.g. foils, films or sheets, are preferably taken from the group of plastics knows as thermoplastics and include poly(vinylchloride) (PVC) , polycarbonate (PC), non- oriented polyester, acrylonitrile-butadiene-styrene (ABS) , polyolefin, copolymers and mixtures of said polymers .
  • Suitable copolymers include vinylchloride copolymer, in particular ABS copolymerized with vinylchloride and polyolefin copolymer.
  • deformable plastic support is a polycarbonate, poly (vinylchloride) , vinylchloride copolymer or a polyester; or a copolyester based on PET.
  • Suitable polycarbonates for use in the colour photographic material of the present invention contain repeating units represented by the formula
  • R_, R 2 , R 3 , R 4 , R 7 and Rg independently represent a hydrogen atom, or an alkyl- or aryl- group; and
  • R 5 and Rg independently represent ahydrogen atom or an alkyl- or aryl- group or together represent the atoms necessary to form a cycloaliphatic ring, e.g. a cyclohexane ring.
  • the polycarbonates preferably have weight averaged molecular weights between 10,000 and 500,000. Polycarbonates based on bisphenol A are particularly preferred.
  • Poly (vinylchloride) for use in the colour photographic material of the present invention preferably contain at least 50% by weight vinylchloride units and optionally contain further hydrophobic units.
  • Preferred comonomers are vinylidene chloride, vinyl acetate, acrylonitrile, styrene, butadiene, chloroprene, dichlorobutadiene, vinyl fluoride, vinylidene fluoride and trifluroethylene.
  • the poly (vinylchloride) preferably contains 60 to 65% by weight of chlorine.
  • a PVC support used in the colour photographic material of the present invention can contain plasticizers, but for ecological reasons and for reasons of stability of the photographic material preferably contains no plasticizers.
  • the PVC can contain stabilizers and antioxidants with inorganic heavy metal salts, metal soaps (particularly of Ba, Cd, Pb, Zn and Ca) , dibutyl and dioctyl tin compounds and epoxidized soya oil.
  • Further optional ingredients of PVC include lubricants, impact modifier, process aids, fillers, fire retardants, smoke repressants, blowing agents, colourants, antistatic agents, viscosity modifier, biostabilizers and UV absorber.
  • Suitable polyesters include condensation products of aromatic, aliphatic or cycloaliphatic dicarboxylic acids with aliphatic or alicyclic glycols, whereby the dicarboxylic acids have preferably 4 to 20 C-atoms and the glycols preferably 2 to 24 C-atoms.
  • the polyesters can also be modified by adding small quantities of other monomers.
  • Preferred polyesters are poly (ethylene terephthalate) (PET) or copolyesters based on PET (CoPET) such as the preferred CoPET Eastar PETG Copolyester 6763 delivered by Eastman (P ⁇ TG) .
  • PET poly (ethylene terephthalate)
  • CoPET copolyesters based on PET
  • stretched (oriented) polyesters are unsuitable, because they form micro-cracks upon deformation.
  • Suitable polyolefins include polypropylene, polyethylene and polymethylpentene either individually or as mixtures .
  • Preferred polyolefins include copolymers of propylene and/or ethylene with hexene and/or butene and/or octene .
  • Preferred deformable plastics for deformable colour photographic materials are PVC, vinylchloride copolymer and PC, because they bend well and the photographic layer is particularly little affected.
  • PC is particularly preferred due to its high tensile strength and ensures a good storage stability.
  • the support can be a single layer foil, but can also consist of a compound arrangement of several plastic foils . All plastic foils must be of a deformable plastic.
  • the thickness of the support is preferably between 0.05 and 0.75 mm.
  • the support can be coated with one or several layers to provide the support with e.g. a colour layer or an adhesive layer.
  • the support can be white, transparent, translucent or coloured with dyes or pigments and may also have structure or roughness on either or both sides. Structure or roughness in the foil is preferably realized during its manufacture.
  • the support may contain pigments or other colorants.
  • An opaque, white colour can be realized by coextrusion of white pigments such as titanium dioxide.
  • Suitable colorants include dyes such as Ultramarine Blue.
  • the deformable colour photographic material further contains a subbing layer containing 1.3 to 80% by weight of a proteinaceous colloid, 0 to 85% by weight of colloidal silica and 0 to 30% by weight of a siloxane, which can form a reaction product with the colloidal silica.
  • the deformable colour photographic material further contains a subbing layer on the same side of the support as the silver halide emulsion layers.
  • a subbing layer that further contains 1.0 to 70% by weight of an ionogenic polyester-polyurethane, which is coated from an aqueous dispersion, in which isocyanate groups in its structure have reacted with an ionomer compound, which contains at least one active hydrogen atom and a carboxylate or sulphonate salt group, and in which the number of salt groups is sufficiently high to render the polyester-polyurethane dispersible in an aqueous medium.
  • Preferred proteinaceous colloids are gelatin and casein, with gelatin being particularly preferred.
  • Suitable anionic polyester-polyurethanes are disclosed in US 3,397,989, US 4,388,403 and DE-OS 3 630 045, herein incorporated by reference, with those with carboxylate and sulphonate groups, such as disclosed in US 3,397,989, being particularly preferred.
  • the polyester- polyurethanes preferably contain a linear polyester with OH-end groups and a molecular weight between 300 and 2,000.
  • the polyester-polyurethanes are preferably employed as an aqueous dispersion, with a particularly preferred dispersion containing the reaction products of the following components with respect to the end dispersion: 23% by weight of a polyester based on adipic acid and hexandiol with an average molecular weight of 840, 14% by weight 4, 4 '-diisocyanatodicyclohexylmethane, 2% by weight dimethylolpropionic acid and 1.5% by weight of trimethylamin, with the composition further containing 7.5% by weight N-Methyl- pyrrolidon and 52% by weight water.
  • Said particularly preferred dispersion is called hereinafter dispersion (D-l) .
  • Suitable polyester-polyurethane dispersions include Dispercoll® products from BAYER.
  • Suitable colloidal silica's include products marketed under the trade names LUDOX® (Du Pont) , SYTON® (Du Pont) and KIESELSOLE® (Bayer) .
  • Their average particle size is preferably between 5 and 100 nm.
  • Suitable siloxanes are represented by the formula: in which R 1 represents a polymerizable group or has a OH- and/or
  • A represents an alkylene group
  • Y represents a bivalent hydrocarbon chain, which can be interrupted by oxygen.
  • R 2 , R 3 and R 4 independently represent an optionally substituted hydrocarbon group such as methyl or ethyl.
  • Suitable siloxane compounds include:
  • the adhesion of the subbing layer to the support can be improved by corona-pretreatment of the support.
  • a surfactant wetting agent
  • Suitable wetting agents include those containing saponines and products marketed under the trade names TERGITOL® (supplied by Union Carbide Corp. and Niacet Corp.) or Manoxol® (supplied by e.g. Rohm and Haas) .
  • the deformable plastic support is laminatable e.g. by coating the backside of the support with an adhesive layer suitable for pressure and/or heat adhesion processes.
  • an adhesive layer suitable for pressure and/or heat adhesion processes.
  • Such pressure sensitive adhesive layers are preferably covered with a protective foil.
  • the adhesive layer, with or without protective foil, can be applied to the support at any time before lamination, thus even before the coating of the support with light-sensitive layers . It is preferred to apply the adhesive layer after processing the colour photographic material.
  • the outermost on the image side of the deformable colour photographic material is provided with a protective foil, preferably via an adhesive layer, which, for example, protects the image from scratching and environmental effects due to oxygen, UV- light and water.
  • the protective foil provided on the image side of the support preferably comprises homopolymers such as PVC, PC, a polyalkylene or a polyester such as PET or CoPET, in particular PVC.
  • the protective foil can also comprise block copolymers with polymer subunits that are preferably selected from the aforementioned homopolymers; mixed copolymers obtained by mixed polymerization of at least two monomers, in particular of at least two different vinyl monomers such as a vinylchloride, an alkylene or a styrene; or blends of at least two polymers selected from the aforementioned homopolymers and/or block copolymers and / or mixed copolymers .
  • the adhesive layer is a polyalkylene foil (adhesive foil) , in particular a polyethylene foil, that can be laminated in direct contact to the protective foil or that is adhered to the protective foil using a glue layer.
  • the protective foil and/or the adhesive layer and/or the glue layer if present contain a UV-absorber such as hydroxybenzophenone or hydroxybenzotriazole.
  • Preferred UV-absorber are those known under the trade name Tinuvin and are delivered by Ciba-Geigy.
  • Suitable protective foils, adhesives and glues include those disclosed in EP-A 0 348 310, US 4,456,667, US 4,455,359, US 4,378,392, US 4,370,397, US 3,871,119 and GB-A 2,321,977 herein incorporated by reference.
  • the protective foil can consist of a single polymer composition or can be a mixture or a laminate of the same or different polymers, taken from the groupof PVC, PC, PET, CoPET or a polyalkylene. It is preferred, that at least one of the polymers used for the protective foil is of the same plastic material that is used for the support.
  • the protective foil used for the material, according to the present invention, has a T Tin that is similar to the T g of the deformable plastic support.
  • Particularly preferred adhesive foils of polyethylene have a melting point of ca. 90 to 100°C.
  • the protective foil used for the material, according to the present invention, can be coloured and/or printed with any kind of design, image or text.
  • the sandwich of protective foil, optionally a glue layer and the adhesive layer is preferably laminated to the image side of the photographic material using a roller laminator.
  • the deformable colour photographic silver halide material is provided with a protective foil before deforming the colour photographic material with a work piece. Deformation of the colour photographic material
  • the deformation of the colour photographic material usually is carried out after conventional processing of the exposed colour photographic material, but can also be done before processing and even before exposure. However, it is preferred to carry out the deformation after conventional processing of the exposed colour photographic material.
  • the deforming step comprising the application of heat and pressure and wherein at least part of the deformable colour photographic material is elongated during the process.
  • the tool used in the deformation step can, for example, be a mould into which the heated plastic is sucked, blown or pressed.
  • the piece of furniture to which the colour photographic material is to be applied can itself be the shaping tool .
  • the shaping tool is termed the "work piece”.
  • the colour photographic material is thereby pressed onto the piece of furniture (the work piece) , for example with the aid of a membrane press, and thereby intimately attached to the piece of furniture.
  • the work piece covered with the photographic material is pressed onto an elastic membrane (usually made of rubber) which itself is placed on top of a tank completely filled with hot water of about 95°C or filled with hot oil to enable the process, according to the present invention, to be carried out at higher temperatures .
  • an elastic membrane usually made of rubber
  • the deforming step comprises deforming the deformable colour photographic material by vacuum deformation.
  • Adhesion of the deformed colour photographic material to the piece of furniture is preferably supplemented with an adhesive.
  • a pressure adhesive is sufficient (e.g. a contact adhesive) .
  • the piece of furniture e.g. a piece of chipwood, has only been taken as an example.
  • the deformable colour photographic material, according to the present invention can easily been used in other technical areas, e.g. the automotive industry, by just replacing the work piece and using adhesives that are known to work for the material the work piece is made of.
  • the deforming step comprises deforming the deformable colour photographic material by injection moulding, wherein the photographic material is placed in a die mould and the injected plastic material deforms the photographic material and forms a single entity with the deformable colour photographic material .
  • the deforming step comprises deforming the deformable colour photographic material in contact with a work piece
  • the support side of the deformable colour photographic material is applied to the work piece e.g. a piece of furniture.
  • the image side of the processed colour photographic material is provided with a transparent protective foil as described above just before the deformation step so as to prevent damage during the deformation step.
  • the silver halide emulsion-side of the deformable colour photographic material can be applied to the work piece.
  • a gelatin solution containing a gelatin-hardening agent can also be used as an adhesive.
  • a preferably reflective, e.g. white or opaque protective foil can be placed in between the silver halide emulsion side of the colour photographic material and the work piece.
  • the adhesion of the deformed photographic material to the work piece is further improved, particularly at the corners and edges of the work piece and where the deformed material ends, e. g. at the corners and the edges on the back side of a piece of furniture.
  • This can be carried out by pretreatment of the work piece, particularly at the corners and edges, with a glue before the deformation; or processing the work piece coated with the deformable photographic material with a hot-knife and/or applying glue after deformation and if necessary after having cut-off surplus photographic material to seal the corners and edges and to prevent peeling of the deformed material .
  • a colour photographic silver halide material able to undergo deformation without significant image degradation
  • the colour photographic silver halide material comprising on a deformable plastic support at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green- sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, wherein the silver halide emulsions have an overall silver chloride content of at least 95 mol% and at least one silver halide emulsion contains silver halide crystals that are doped with 10 to 700 nmol iridium.
  • the silver halide emulsions have an overall silver chloride content of at least 98 mol%.
  • Silver halide emulsions which are substantially free from silver iodide are preferred, emulsions with less than 1 mol% iodide and in particular emulsions with less than 0.1 mol% iodide being particularly preferred.
  • At least one silver halide emulsion used in the material, according to the present invention preferably contains silver halide crystals that are doped with at least one dopant alone or in addition to Ir.
  • the preferred dopants in addition to Ir are Rh- and Hg-salts.
  • At least one blue-, at least one green- and at least one red-sensitive silver halide emulsion layer in each case comprises at least one silver halide emulsion whose silver halide crystals are doped with at least 10 to 700 nmol, preferably 10 to 500 nmol Ir.
  • the silver halide crystals are doped with Ir in form of Ir (IV) -salts or complexes, particularly with salts or complexes comprising halide ions such as chloride or fluoride, acetate ions, or ligands such as nitrosyl or 5-methyl thiazole.
  • Suitable dopants for the emulsions used in the material of the present invention and processes for the addition of the dopants are to be found in Research Disclosure 37038, parts XV-B (1995), from page 90 herein incorporated by reference.
  • the silver halide emulsions used in the colour photographic material of the present invention can be prepared by a simple double jet process, a double jet process with separate preprecipitation (formation of crystal nuclei) and precipitation thereon or a combined double jet recrystallization process.
  • the preparation of at least one silver halide emulsion used for the material comprises the recrystallization of a Lippmann ( ikrate) emulsion.
  • the Ir dopants are added to the halide solution, when preparing the emulsions by a simple double jet process and added to the Lippmann emulsion, when a Lippmann emulsion (mikrate) recrystallization process is used.
  • At least one silver halide emulsion preferably contains silver halide crystals with at least two different zones (structured crystals) , in which the outermost zone has a higher molar content of silver bromide than the rest of the crystal .
  • the nucleus of the structured crystals is preferably prepared by a double jet process with a silver nitrate solution and a halide solution, predominantly chloride, and precipitation thereon preferably occurs by recrystallization of a fine-grained silver bromide-chloride emulsion (Lippmann emulsion) with a molar silver bromide content of at least 5 percent.
  • a fine-grained silver bromide-chloride emulsion Lippmann emulsion
  • at least one silver halide emulsion contains structured crystals with at least two different zones, the outermost zone having a higher molar content of silver bromide than the rest of the crystal .
  • At least one blue-, at least one green- and at least one red-sensitive silver halide emulsion layer in each case comprises at least one silver halide emulsion which contains the structured crystals.
  • the green-sensitive silver halide emulsion layer and/or the red-sensitive silver halide emulsion layer contains at least one silver halide emulsion with silver halide crystals having an average grain size (volume averaged, diameter of a sphere with an equivalent volume) of at least 0.40 ⁇ m.
  • the silver halide emulsions contain one or more binders, with the binders being at least 80% by weight of gelatin being particularly preferred.
  • yellow couplers, purple couplers and blue-green couplers represented by formulae (IV) , (V) , (VI), (XIV), (VII) and (VIII) are used.
  • R 1 represents alkyl, alkoxy, aryl or hetero-aryl groups
  • R 2 represents alkoxy or aryloxy groups or halogen
  • R 3 represents -C0 2 R 6 , -CONR 6 R 7 , -NHC0 2 R 6 , -NHS0 2 -R 6 , -S0 2 NR 6 R 7 , -S0 2 NHC0R 6 , -NHCOR 6 groups, Cl
  • R 4 represents hydrogen or a substituent
  • R 5 represents hydrogen or a group which can be split off during coupling
  • R 6 , R 7 independently represent hydrogen or alkyl or aryl groups and one of the R 2 , R 3 and R 4 group is a ballast group.
  • R 8 and R 9 independently represent hydrogen or alkyl, aralkyl, aryl, aryloxy, alkylthio, arylthio, amino, anilino, acylamino, cyano, alkoxycarbonyl, alkylcarbamoyl or alkylsulfamoyl groups, wherein these groups are optionally further substituted and wherein at least one of these groups contains a ballast group, and R 10 represents hydrogen or a group which can split off during chromogenic coupling.
  • R 8 is preferably a tert. -butyl group; R 10 is preferably chlorine.
  • r is an iteger from 1 to 5; q is 1, 2 or 3; R represents a group which can split off during chromogenic coupling; R represents halogen or alkoxy or acylamino groups; and R represents halogen or cyano, thiocyanato, alkoxy, alkyl, acylamino or alkoxycarbamyl groups .
  • R is preferably hydrogen or a group which can split off as an anion under the basic conditions of chromogenic coupling.
  • Cyan coupler :
  • R 11 , R 12 , R 13 and R 14 independently represent hydrogen or a C- ⁇ -Cg-alkyl group.
  • R 11 is preferably a CH 3 or C H 5 ;
  • R 12 is preferably a C -Cg-alkyl group; and
  • R 13 and R 14 are preferably t-
  • R 15 represents alkyl, alkenyl, aryl or hetero-aryl groups
  • R 16 , R 17 independently represent hydrogen, alkyl, alkenyl, aryl or hetero-aryl groups
  • R 18 represents hydrogen or a group which can split off during chromogenic coupling
  • R 19 represents -COR 20 , -C0 2 R 20 , -CONR 20 R 21 , -S0 2 R 20 , -SO 2 NR 20 R 21 , -CO-C0 2 R 2 °. -COCONR 20 R 21 or a group with the formula
  • R 20 represents alkyl, alkenyl, aryl or hetero-aryl groups
  • R 21 represents hydrogen or R 20
  • R 23 , R 24 and R 25 independently represent -OR 21 , -SR 21 , -NR 20 R 21 , -R 21 or Cl
  • p is 1 or 2.
  • couplers in which p 2, R 19 represents -S0 2 R 27 . -S0 2 N(R 27 ) 2 . -C0 2 R 27 , -COC0 2 -R 27 , or -COCO-N (R 27 ) 2 , R 27 represents alkyl, aryl, alkenyl or hetero-aryl groups and R 15 to R 18 have the meanings given above.
  • couplers in which p 2, R 19 represents a group with the formula
  • R 2 8 represents hydrogen, Cl, CN, Br, F, -COR 29 , -CONHR 29 or C0R 29 and R 29 represents alkyl or aryl groups.
  • (6) couplers in which p 2 and R 19 represents a group with the formula
  • R 1 represents halogen, CN, -CF 3 or alkoxycarbonyl groups
  • R 11 represents hydrogen or has the same meaning as R 1
  • R 15 to R 18 have the meanings given above.
  • couplers in which p 2 and R 19 represents -COR 20 ;
  • R 20 represents alkyl, aryl or hetero-aryl groups and
  • R 15 to R 18 have the meanings given above.
  • couplers in which p 2 and R 19 represents a group with the formula
  • R 1 represents -OR 11 or -N 113 ⁇ ** ⁇ ;
  • R 11 and R 111 represent an optionally substituted C*-_-Cg-alkyl group;
  • R IV represents hydrogen or has the same meaning as R 111 ; and
  • R 1 -*' to R 18 have the meanings given above.
  • R 15 represents alkyl or aryl groups
  • R 16 and R 17 independently represent H or alkyl or aryl groups
  • R 18 represents H, Cl, alkoxy, aryloxy, alkylthio or arylthio groups
  • R 23 and R 24 independently represent -OR 21 , -NR 20 R 21 or -Cl.
  • R 15 is a group according to one of formulae (15-1) , (15-2) and (15-3) :
  • R represents an alkyl group with at least 8 C- atoms ;
  • R 1 represents alkyl, alkenyl, alkoxy, aryloxy, 5 acyloxy, acylamino, sulfonyloxy, sulfamoylamino, sulfonamido, ureido, hydroxycarbonyl, hydroxy, carbonylamino, carbamoyl, alkylthio, arylthio, alkylamino, arylamino groups or hydrogen;
  • R 11 represents an alkyl or aryl group;
  • X represents S, NH or NR 111 and R 111 represents 0 an alkyl or aryl group;
  • R 1 represents an optionally substituted alkyl group
  • _ ⁇ l ⁇ represents an alkyl group, in particular C ⁇ -C ⁇ alkyl group
  • R 17 represents H
  • R 20 represents an alkyl or aryl group.
  • Particularly preferred couplers are group (6) couplers according to formula (VIII) in which R 15 is represented by formula (15-1); group (7) couplers according to formula (VIII) in which R 15 is represented by formula (15-2); group (8) couplers according to formula (VIII) in which R 15 is represented by formula (15-3) ; and ⁇ group (8) couplers according to formula (VIII) and R 15 is a group with 8 to 18 carbon atoms.
  • Alkyl- and alkenyl- groups can be straight chain, branched, cyclic and optionally substituted.
  • Aryl- and hetero-aryl- groups are optionally substituted and the aryl group is preferably a phenyl group.
  • Possible substituents for the alkyl, alkenyl, aryl and hetero-aryl groups are: alkyl, alkenyl, aryl, hetero-aryl, alkoxy, aryloxy, alkenyloxy, hydroxy, alkylthio, arylthio, halogen, cyano, acyl, acyloxy or acylamino groups, wherein an acyl group can be derived from an aliphatic, olefinic or aromatic carbonic, carboxylic, carboxylamino, sulfonic, sulfonamido, sulfinic, phosphoric, phosphonic or phosphorous acid.
  • cyan couplers according to formula (VII) are:
  • magenta couplers according to formula (V) are:
  • magenta couplers according to formula (VI) are :
  • magenta couplers according to formula (XIV) are:
  • yellow couplers according to formula (IV) are:
  • the blue-sensitive silver halide emulsion layer contains a blue sensitizer represented by formula (IX) : wherein X 1 and X 2 independently represent S or Se, R 31 to R 36 independently represent hydrogen, halogen or an alkyl-, alkoxy, aryl or hetero-aryl group or R 31 and R 32 ; R 32 and R 33 ; R 34 and R 35 ; R 35 and R 36 together represent the atoms necessary to form an anellated benzo-, naphtho- or heterocyclic ring, R 37 and R 38 independently represent an alkyl-, sulfoalkyl-, carboxyalkyl,- (CH 2 ) 1 S0 2 R 39 S0 2 -alkyl, - (CH 2 ) 1 S0 2 R 3 CO-alkyl, - (CH 2 ) 1 COR 39 S0 2 -alkyl or - (CH2) ! -
  • IX blue sensitizer represented by formula (IX) : wherein X 1 and
  • R 31 to R 36 preferably independently represent hydrogen, F, Cl, Br or alkyl, CF 3 , OCH 3 or phenyl groups; or R 31 and R 32 ; R 32 and R33. R34 and R35. or R35 anc j R 36 together represent the atoms necessary to form an anellated benzo- or naphtho-ring.
  • blue sensitizers include the following compounds, in which "Et" represents Ethyl:
  • the colour photographic material contains at least one blue-sensitive layer comprising a blue sensiti-ier according to formula (IX) wherein: X 1 and X 2 represent S, R 35 represents a trifluormethyl group or a halogen atom, in particular a chlorine atom, R 32 and R 33 together represent the atoms necessary to form an anellated benzo-, naphtho- or heterocyclic ring, particularly an anellated benzo-ring and R 37 and R 38 independently represent sulfoalkyl-, carboxyalkyl,
  • formula (IX) wherein: X 1 and X 2 represent S, R 35 represents a trifluormethyl group or a halogen atom, in particular a chlorine atom, R 32 and R 33 together represent the atoms necessary to form an anellated benzo-, naphtho- or heterocyclic ring, particularly an anellated benzo-ring and R 37 and R 38 independently represent sulfoalkyl-, carboxyalkyl,
  • red sensitizers include compounds according to formula (X) and (XI) :
  • R 4 -*- to R 4 ° independently represent hydrogen, halogen or an alkyl-, alkoxy, aryl or hetero-aryl group; or R 41 and R 42 ; R 42 and R 43. 44 and R 45. or 45 and R 46 toget h er represent the atoms necessary to form an anellated benzo-, naphtho- or heterocyclic ring, R 47 and R 48 independently represent an alkyl-, sulfoalkyl-, carboxyalkyl, -(CH 2 ) ⁇ S0 2 YS0 2 -alkyl, - (CH 2 ) 1 S0 2 YCO-alkyl, - (CH 2 ) 1 COYS0 2 -alkyl or - (CH 2 ) x-COYCO-alkyl group, Y represents -N ⁇ - or -NH-, R 49 and R 50 independently represent a hydrogen atom or an alkyl- or an aryl group, R 51 represents a hydrogen atom
  • R 41 to R 45 preferably independently represent hydrogen, F, Cl, Br or alkyl, CF 3 , OCH 3 or phenyl groups; or R 41 and R 42 ; R 42 and R 43. R 44 and R 45. or R 45 and R 46 toget h er represent the atoms necessary to form an anellated benzo- or naphtho-ring. Examples of red sensitizers are given below, wherein "Et" represents Ethyl:
  • the deformable colour photographic material contains a layer containing at least one compound represented by formula (XII)
  • R represents H, CH 3 or OCH 3 ;
  • R represents H, OH, CH 3 ,
  • Compounds according to formula (XII) are preferably present in a light-sensitive layer in a quantity of 50 to 5000 mg per kg Ag, particularly preferably in a quantity of 200 to 2000 mg per kg Ag.
  • the colour photographic material contains a compound according to formula (XII) in a blue-sensitive silver halide emulsion layer.
  • the colour photographic material contains at least one layer containing a compound according to formula (XIII) :
  • R 5 ' 5 represents a substituent and n is 1, 2 or 3.
  • R 5 ' 5 represents a substituent and n is 1, 2 or 3.
  • the sulfonamido group can be bonded through the S- or the N-atom of the grou .
  • Compounds according to formula (XIII) are preferably present in a red-sensitive silver halide emulsion layer in a quantity of 100 to 5000 mg per kg Ag, particularly preferably in a quantity of 500 to 3000 mg per kg Ag.
  • Stabilizers according to formula (XIII) are particularly useful
  • R and; R and R independently represent H, Cl or C ⁇ -C 4 -alkyl, phenyl or chlorophenyl groups.
  • Particularly preferred compounds according to formula (XIII) include:
  • the red-sensitive layer contains at least one compound w according to formula (XII) and at least one compound according to formula (XIII) .
  • binders The main ingredients of photographic emulsion layers are binders, silver halide crystals and colour couplers . Details over suitable binders are to be found in Research Disclosure 37254, part is 2 (1995) page 286, herein incorporated by reference.
  • hydrophobic colour couplers as well as other hydrophobic ingredients in the layer, are usually dissolved or dispersed in high boiling point organic solvents . These solutions or dispersions are then emulsified in an aqueous binder solution
  • Suitable high boiling point organic solvents methods for incorporation in the layers of a photographic material and other methods to incorporate chemical compounds in photographic layers
  • the light-insensitive layers generally coated between the light-sensitive layers with different spectral sensitivities can contain ingredients, which hinder undesirable diffusion of
  • Suitable compounds (white couplers, scavengers for developer oxidation products (also called DOP scavengers, Dox scavengers, interlayer scavengers or just scavengers) are to be found in
  • the colour photographic material may further contain UV-light absorbing compounds, brighteners, spacing agents, filter dyes, formaldehyde captors, anti-fading agents, antioxidants, D m i n -dyes, additives to improve the dye, coupler and white image area stability, additives to reduce colour fog, plasticizers (latices) , biocides and polyvinylpyrrolidone.
  • additives and other additives can be contained in the emulsion and interlayers, but can also be contained in additional layers between the support and emulsion layers and/or on the non-emulsion layer-bearing side of the support. Suitable compounds are to be found in Research
  • the layers of the colour photographic material are usually hardened i.e. the binders used, preferably gelatin, is crosslinked by a suitable chemical process.
  • Immediate or fast hardeners are preferably employed. Suitable immediate and fast hardeners are to be found in Research Disclosure 37254, part 9 (1995), page 294 and in Research Disclosure 37038, part XII (1995), page 86, herein incorporated by reference.
  • outermost layers of the photographic material and in particular the outermost layer on the image side can be embossed and/or coloured and/or printed with any kind of design, image or text.
  • the process for producing a deformed image can be used to apply any kind of representations like images, designs, patterns, letters and so forth to a wide variety of work pieces including pieces of furniture.
  • Solutions 02 and 03 at 40°C were simultaneously added at a constant rate to Solution 01 in a precipitation vessel at a pAg of 7.7 and a pH of 5.3 with vigorous stirring over a period of 30 minutes.
  • the pAg-value was maintained by adding a sodium chloride solution and the pH maintained by adding dilute sulphuric acid to the precipitation vessel.
  • a silver chloride emulsion was obtained with an average silver chloride grain size of 0.09 ⁇ m.
  • the weight ratio of gelatin to silver nitrate was 0.14.
  • the emulsion was then subjected to ultrafitration at 50°C and redispersed with sufficient gelatin and deionized water to yield a dispersion containing 200g of silver chloride per kg dispersion, a weight ratio of gelatin to silver nitrate (equivalent to AgX present) of 0.3 and an average silver chloride grain size of 0.13 ⁇ m.
  • EmM2 Lippmann emulsion EmM2 was prepared as described for EmMl except that Solution 04 was used instead of Solution 02.
  • the emulsion obtained contained 90 mol% silver chloride, 10 mol% silver bromide and 70 x 10 -9 mol Ir4+ per mol silver chloride.
  • EmM3 Lippmann emulsion (EmM3) Lippmann emulsion EmM3 was prepared as described for EmMl except that Solution 05 was used instead of Solution 02.
  • the emulsion obtained contained 2000 x 10 -9 mol Ir4+ per mol silver chloride .
  • Solutions 12 and 13 at 50°C were simultaneously added to Solution 11 in a precipitation vessel at a pAg of 7.7 with vigorous stirring over a period of 150 minutes.
  • the pAg- value was maintained by adding a sodium chloride solution and a pH of 5.3 was maintained by adding dilute sulphuric acid to the precipitation vessel.
  • the addition rate of both Solutions 12 and 13 was so regulated that in the first 100 minutes it increased linearly from 2 mL/min to 16 mL/min and during the final 50 minutes was held constant at 20 mL/min.
  • a silver chloride emulsion was thereby obtained with an average silver chloride grain size of 0.85 ⁇ m.
  • the weight ratio of gelatin to silver nitrate (equivalent to AgX) was 0.14.
  • the emulsion was then subjected to ultrafiltration at 50°C and redispersed with sufficient gelatin and deionized water to yield a dispersion containing 200g of silver chloride per kg dispersion and a weight ratio of gelatin to silver nitrate
  • the emulsion thereby obtained contained 5 x 10 -9 mol Ir4+ per mole of silver chloride.
  • the emulsion first was prestabilized with 0.01 mmol of compound EST-6 and then was chemically ripened at a pH of 5.3 with
  • the precipitation, desalting and redispersion were carried out as described for EmBl, except that 28.4 ⁇ g K 2 IrClg was added to solution 12.
  • the emulsion thereby obtained contained 10 x 10 -9 mol
  • the emulsion is prepared by recrystallization of the Lippmann emulsion EmM2 onto the separate preprecipitate emulsion (nucleus emulsion) EmVl, which was prepared as follows:
  • EmVl Representing 300 g AgN0 3
  • EmM2 Representing 50 g AgN0 3
  • EmVl 1.5 kg
  • EmM2 Lippmann emulsion
  • 25 ml of a 20 % by weight NaCl solution was added to EmVl .
  • a digestion of 5 minutes EmM2 is added to EmVl within 50 minutes at a constant rate.
  • the emulsion was then redispersed with sufficient gelatin and deionized water to yield a weight ratio 0 of gelatin to silver nitrate (equivalent to AgX present) of 0.56.
  • a silver chloride emulsion was thereby obtained with an average silver chloride grain size of 0.85 ⁇ m. The emulsion thereby
  • the emulsion first was prestabilized with 0.01 mmol of compound EST-6 and then was chemically ripened at a pH of 5.3 with 0.13 x 10 mol ammonium tetrachloroaurate and 5.4 x 10 mol sodium thiosulphate per mole of silver chloride for 180 minutes at a temperature of 47°C. After chemical ripening the following 0 ingredients were added per mole of silver chloride at 40°C: 0.3 mmol of the spectral sensitizing compound (IX-1), 0.5 mmol of the stabilizing compound XII-8, 0.5 mmol of the stabilizing compound EST-1 and finally 0.6 mmol of potassium bromide.
  • the emulsion was then subjected to ultrafitration at 50°C, washed and redispersed with sufficient gelatin and deionized water to yield a dispersion containing 200g of silver chloride per kg dispersion, 5 x 10 -9 mol Ir4+ and 2.5 x 10-9 mol Rh 3+ per mol silver chloride and a weight ratio of gelatin to silver nitrate (equivalent to AgX present) of 0.56.
  • the emulsion was then chemically ripened at a pH of 6.0 with
  • the emulsion thereby obtained contained 100 x 10 —9 mol Ir4+ per mole silver chloride.
  • the emulsion is prepared by recrystallization of the Lippmann j emulsion EmM3 onto the separate preprecipitate emulsion (nucleus emulsion) EmV2, which was prepared as follows:
  • the precipitation, desalting and redispersion were carried out as 0 described for EmGl, except that the amount of EmMl added to solution 21 was increased to 250 g. A silver chloride emulsion was thereby obtained with an average silver chloride grain size of 0.46 ⁇ .
  • EmV2 (representing 300 g AgN0 3 ) melted at 40°C in a precipitation vessel while stirring.
  • EmM3 (representing 100 g AgN0 3 ) was melted at 50°C while stirring.
  • 25 ml of a 20 % by 0 weight NaCl solution was added to ⁇ mV2.
  • EmM3 After a digestion of 5 minutes EmM3 is added to EmV2 within 80 minutes at a constant rate.
  • the emulsion was then redispersed with sufficient gelatin and deionized water to yield a weight ratio of gelatin to silver nitrate (equivalent to AgX present) of 0.56.
  • a 5 silver chloride emulsion was thereby obtained with an average silver chloride grain size of 0.51 ⁇ m.
  • the emulsion thereby obtained contained 504 x 10 -9 mol Ir4+ and 0.625 nmol Rh** *3 ix " * " per mole of silver chloride.
  • the emulsion was then chemically ripened at a pH of 6.0 with 0 0.33 x 10 mol ammonium tetrachloroaurate and 1.10 x 10 mol sodium thiosulphate per mole of silver chloride for 240 minutes at a temperature of 45°C.
  • the following ingredients were added per mole AgCl at 40°C: 0,6 mmol of the green sensitizing compound (GS-2), 2.4 mmol of the stabilizing compound 5 EST-3, 1.2 mmol of the stabilizing compound (EST-1), 0,6 mmol of the stabilizing compound (XII-1) and finally 3 mmol of potassium bromide .
  • the precipitation, desalting and redispersion were carried out as described for EmG2.
  • the emulsion was chemically ripened at a pH of 5.0 with 2.2 x 10 ⁇ mol ammonium tetrachloroaurate and 9.0 x 10 mol sodium thiosulphate per mole silver chloride for 280 minutes at a temperature of 65°C.
  • After chemical ripening the following ingredients were added per mole AgCl at 40 °C: 75 ⁇ mol of the spectral sensitizing compound (X-l) , 2.5 mmol of the stabilizing compound EST-4 and finally 3 mmol of potassium bromide.
  • the emulsion was chemically ripened at a pH of 5.0 with 2.2 x 10 ⁇ mol ammonium tetrachloroaurate and 9.0 x 10 mol sodium thiosulphate per mole silver chloride for 280 minutes at a temperature of 65°C.
  • After chemical ripening the following ingredients were added per
  • the precipitation, desalting and redispersion were carried out as described for EmRl, exept that 142 ⁇ g K 2 IrClg and 3.8 ⁇ g RhCl 3 x 3 H 2 0 were added to solution 22.
  • the emulsion was chemically ripened at a pH of 5.0 with 1.32 x 10 mol ammonium tetrachloroaurate and 9.0 x 10 mol sodium thiosulphate per mole silver chloride for 280 minutes at a temperature of 65°C.
  • the emulsion thereby obtained contained 50 x 10 mol Ir and 2.5 x 10 -9 mol Rh3+per mole silver chloride.
  • a colour photographic material suitable for photographic processing, was prepared by coating the following layers in the following order onto a PVC plastic foil.
  • the silver halide coverage is given as equivalent quantities of silver nitrate.
  • Support A 220 ⁇ m thick PVC toned white with Ti0 2 (comprising no plastizisers) - corona pretreated *>
  • Support B PC foil (175 ⁇ m thick; supplied by General Electric) - corona pretreated
  • Table 2 gives the quantity of iridium dopant and the preparation method used for the silver halide emulsion layers given in Table 1.
  • the Ir-quantities are molar ratios with respect to silver halide.
  • Dmin Minimum density of the one day old material without exposure according to X-Rite Status A for the yellow layer (Dmin Y) , the magenta layer (Dmin M) and the cyan layer (Dmin C) .
  • Gamma-value G3 shoulder gradation x 100, i.e. 100 times the slope of the sensitometric curve between a density of Dmin + 1.60 and a density of D m i n + 2.15 of the one day old material according to X-Rite Status A for the yellow layer (G3 Y) , the magenta layer (G3 M) and the cyan layer (G3 C) .
  • One day old material means, that the unexposed and unprocessed material was stored for one day at a temperature of 25 °C without controlling the relative humidity. This is done to get better reproducible results.
  • the sensitometric properties of the colour photographic material were determined upon digital exposure by exposing it with an digital printer with the following technical specifications :
  • Red laser wavelength of 683 nm
  • Green laser wavelength of 543 nm
  • Blue laser wavelength of 458 nm
  • Exposure time approx. 131 ns per pixel (pixel exposure time)
  • Number of colour steps attained 256 per channel
  • Layer assembly 200 consisted only of support A.
  • Layer assemblies 111 to 113, 121 to 123 and 131 to 133 were digitally exposed as described above with an image comprising black characters of varying size (height 3 mm to 10 mm) and chemical processed as described for EXAMPLES 1 to 9.
  • layer assembly 200 an image comprising black characters of varying size (height 3 mm to 10 mm) was produced by conventional offset printing.
  • a roller laminator was used for pressing together the superposed materials at a temperature of 104°C measured within the sandwich.
  • Layer assemblies 111 to 113, 131 to 133 and 200 could easily be deformed and exhibited neither cracks nor micro-cracks .
  • Layer assemblies 121 to 123 could be deformed, but needed longer then the layer assemblies mentioned before; they exhibited neither cracks nor micro-cracks .
  • the image quality was evaluated with the naked eye by looking at the black characters in the deformed part of the test pieces .
  • Layer assemblies 111 to 113 and 131 to 133 showed no loss in image quality at the deformed parts .
  • Layer assemblies 121 to 123 showed minor losses in image quality that were barely visible as a small loss in density (dark grey instead of black) of the characters in the deformed parts.
  • Layer assembly 200 showed a significant loss in image quality in form of a clearly visible brightening of the characters in the deformed parts . Along the edges and corners grey and even white lines appear within the characters.
  • PVC and PC are preferred supports for the photographic material of the present invention, PVC containing no plastizisers being particularly preferred.
  • the advantage of PVC is it's ease of deformation and thereby enabling a very smooth deformation that does not at all adversely effect the image quality of the deformed image.
  • the offset printed material (layer assembly 200) gave a poor image quality upon deformation and cannot be used according to the present invention.
  • the present invention may include any feature or combination of features disclosed herein either implicitly or explicitly or any generalisation thereof irrespective of whether it relates to the presently claimed invention.

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Abstract

A deformable colour photographic silver halide material, said colour photographic silver halide material comprising on a deformable plastic support at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, wherein the silver halide emulsions have an overall silver chloride content of at least 95 mold and at least one silver halide emulsion contains silver halide crystals that are doped with 10 to 700 nmol iridium

Description

DEFORMABLE COLOUR PHOTOGRAPHIC SILVER HALIDE MATERIAL
Field of the invention
The present invention relates to a deformable material for producing a deformed image without significant image degradation, said material has a good storage stability and is suitable for digital exposure with very short pixeltimes, large formats and automatic processing.
Background of the invention.
Deformable materials with colour and/or black and white motives, particularly those made of plastic, are used e.g. as protective and/or decorative foils particularly in the furniture industry, in which they are used as design elements to cover low- priced and/or light weight carrier materials and/or carrier materials that are critical to the conditions of their use; the configuration of deformable material and carrier material replacing much more expensive and/or heavier and/or less easier to handle and/or less resistant materials such as real wood, stainless steel or marble.
The manufacture of deformed plastic pieces with any kind of representations like images, designs, patterns, letters and so forth, usually proceeds by printing on an undeformed flat foil of a thermoplastic polymer and is then deformed using heat and pressure.
The results obtained are unsatisfactory, because the printed pieces after deformation exhibit a loss in image quality, that is visible at all parts where the deformation has led to an elongation of the deformed material. In particular a significant loss in image quality is observed after deformation at curved parts and still more so at sharp edges, which is particularly noticeable as a bright line and/or increase granularity following the curves and/or edges in homogeneously coloured dark areas, which is unacceptable, particularly in the case of decorated furniture. Furthermore, the printing processes require complicated prepress steps and are therefore expensive and are not suitable for the manufacture of individual designs with small production runs.
Photographic layers, which were laminated onto a support, have, for example, been disclosed in EP-A 0 250 657, US 3,871,119, EP-A 0 490 416 and EP-A 0 276 506 for the manufacture of materials for identity cards and in EP-A 1 189 108 have been disclosed for materials with a broader colour gamut. The layers can subsequently be covered with a protective foil, as disclosed, for example, in US 4,370,397 and GB 2,121,812.
The disclosed ID-cards are all flat, so that there are no requirements regarding deformability and their suitability or otherwise therefor was not disclosed.
Furthermore, as laminatable photographic layers those with special binders have been disclosed, although neither of these options produces an optimum image quality. In particular the graininess realized with state of the art laminatable materials is unacceptably high. The DTR materials that are also known to be laminatable, are not suitable for the furniture industry, because the two-sheet process has not been adapted to the large format automated processing needed in this field.
Representations like images, designs, patterns, letters and so forth, of the highest quality can be realized with colour photographic materials, comprising on a support at least one blue- sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red- sensitive silver halide emulsion layer containing at least one cyan coupler. As a support for reflective material, paper coated on both sides with polyethylene and for transparent materials longitudinally and laterally stretched polyester is usually used. The deformation according to the present invention of such colour photographic materials is not possible.
The deformability of special photographic materials consisting of a support, an optional adhesive layer and a black and white silver halide emulsion photographic layer with special binders was disclosed in FR 968 638 and GB 739,477. According to FR 968 638 gelatin cannot be used as a binder, because cracking occurred upon bending.
The known deformable photographic materials as disclosed in FR 968 638 and GB 739 477 did not fulfil the present quality requirements for photographically produced images and the bending behaviour was unsatisfactory.
GB 2,321,977 and the corresponding W098/35269 disclose a mouldable photographic material comprising a thermoplastic base sheet, a primer layer providing a key for a light sensitive layer, and a protective thermoplastic foil, the foil being bonded to the light sensitive layer with an optical quality adhesive.
Furthermore, no deformable photographic materials are known, which are satisfactory for both a long exposure and for a digital exposure with very short pixeltimes, such as, for example, required in the furniture industry, to enable the exposure of large formats. Analogue long exposures are desirable so that inexpensive exposure configurations can be used, but digital exposure is being increasingly required, because it is much faster and because rolls of film are much easier to expose continuously. Furthermore, different designs can be much more easily realized in production, since no film is necessary as an intermediate step. Nowadays new designs are usually produced by computer and can be directly used in digital exposure to realize optimal image quality. Digital exposure, also known as scanning exposure, proceeds pixel-wise, line-wise or area-wise with high intensity strongly focussed beam of light beam e.g. from lasers, light emitting diodes (LED) , DMD (digital micromirror devices) apparatuses, cathode ray tubes and such like and with short to very short exposure times per pixel. A pixel is the smallest image area on the copying material, which can be addressed by the exposure apparatus . Conventional silver halide emulsions exhibit a too low sensitivity, due to an unsatisfactory reciprocity, which results in a too low contrast and insufficient maximum* density at such short exposure times . A similar reciprocity failure is also observed at exposure times above 10 s (long exposure times) , which are necessary for analogue exposure of large formats.
Furthermore, the known deformable photographic materials are unsatisfactory with regard to the storage stability of the unexposed and unprocessed materials, in particular when the support of the photographic material contains additives like plastizisers, stabilizers, and so forth.
Objects of the invention.
It is therefore an object of the present invention to provide a deformable colour photographic material, which enables high quality representations like images, designs, patterns, letters and so forth to be realized, which undergo the desired deformation by heat and/or pressure without significant visible loss in image quality. A further advantage of the present invention compared to printing processes is the possibility to produce even single pieces as a proof or demonstration example.
Further aspects and advantages of the invention will become apparent from the description hereinafter.
Summary of the invention It has been surprisingly found, that the deformable colour photographic recording material of the present invention is suitable for digital exposure even at pixel times lower then 200 ns, exhibits a very good storage stability of the unexposed and unprocessed material and gives high quality images, said colour photographic silver halide material comprising on a deformable plastic support at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green- sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, wherein the silver halide emulsions have an overall silver chloride content of at least 95 mol% and at least one silver halide emulsion contains silver halide crystals that are doped with 10 to 700 nmol, preferably 10 to 500 nmol Ir.
Surprisingly it has been found, at variance with the disclosure in FR 968 638, that gelatin can be successfully used in the materials used in the process according to the present invention. The reason why the use of gelatin failed according to FR 968 638, but surprisingly was very successful for the present invention, may be the difference between single layer black and white materials like those described in FR 968 638, that essentially only contain silver halide crystals dispersed in the binder, and multilayer colour photographic materials according to the present invention, that also comprise softer materials like couplers in their layers .
Aspects of the present invention are realized with a deformable colour photographic silver halide material, the colour photographic silver halide material comprising on a deformable plastic support at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green- sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, wherein the silver halide emulsions have an overall silver chloride content of at least 95 mol% and at least one silver halide emulsion contains silver halide crystals that are doped with 10 to 700 nmol iridium.
Aspects of the present invention are also realized with a process for producing a deformed image comprising the steps of: exposing the above-mentioned colour photographic silver halide material, preferably digitally; conventionally processing the exposed colour photographic material to produce an image; and deforming the colour photographic material . Detailed description of the invention.
Definitions
The term deformation (also known as moulding) used in disclosing the present invention refers to three-dimensional deformation in which an initially flat object e.g. a plate or a sheet is deformed to a three dimensional shape using a shaping tool to which pressure and/or heat is applied, in the course of which at least a part of the initially flat object is elongated (stretched) , the shape being maintained upon cooling and/or upon releasing the pressure. The out-of-plane deformation is usually of a greater measure than the thickness of the initially flat object, the thickness being defined as the distance between the surface to which the tool is applied and the opposite surface of the initially flat object. The term deformable as used in qualifying colour photographic silver halide material is the ability to undergo deformation as defined above. The term to deform means the process of deformation.
The term deformable plastic as used in disclosing the present invention includes all polymers, which can be deformed, without fracturing, exhibiting cracks or thermally decomposing. The term deformable plastic includes all polymers, that are available in foil form and that are not stretched.
The term conventional processing as used in disclosing the present invention means chromogenic chemical colour processing as used for the processing of conventional photographic materials such as color papers, color films or display materials and is further specified in the following description.
The terms immediate and fast hardeners mean that the hardener is capable of hardening gelatin immediately after coating or at least several days after coating to such an extent that no further changes in sensitometry and swelling behaviour due to the presence of hardener occur. By swelling is meant the difference between wet layer thickness and dry layer thickness upon aqueous processing of the material .
The term silver nitrate (equivalent to AgX present) is used in the examples to characterize the silver halide emulsions means the weight of silver nitrate in a given amount of silver halide emulsion that results when the quantity of silver halide in the emulsion is hypothetically converted into the equivalent weight of silver nitrate. Process for producing a deformed image
Aspects of the present invention are also realized with a process for producing a deformed image comprising the steps of: exposing the above-mentioned colour photographic silver halide material, according to the present invention, preferably digitally; conventionally processing the exposed colour photographic material to produce an image; and deforming the colour photographic material . There are commonly used apparatus available for exposure and conventional processing of the photographic material of the present inventions that are able to process long and wide sheets as well as wide rolls of the material as are needed e.g. in the furniture industry. Exposure preferably is carried out digitally and proceeds preferably from the side remote from the support, but in the case of a transparent or slightly coloured support exposure can also be carried out through the support if a loss in sharpness is tolerable. To avoid light scattering and resulting loss in sharpness in the case of a transparent or translucent support, it is preferred to place a dark sheet in contact with the side of the material remote from the light source upon exposure. The same effect can be achieved when the material comprises an antihalation layer, that is bleached during the chemical processing of the material. Suitable absorbing material for said antihalation layer is described in Research Disclosure 38 957, 1996, VIII., from page 610, herein incorporated by reference. The antihalation layer has to be arranged on the side of the emulsion layers remote from the light source .
In a preferred embodiment of the deformable colour photographic silver halide material, according to the present invention, the support is provided on the image side between the silver halide layers and the support with a layer reflecting white light and on the opposite side with a non-bleachable black antihalation layer as described in US 4 224 402, herein incorporated by reference.
After image-wise exposure the colour photographic material is appropriately processed. Details of processing and the chemicals required therefor together with exemplary colour photographic materials are to be found in Research Disclosure 37254, part 10 (1995) page 294 and in Research Disclosure 37038, parts XVI to XXIII (1995) , from page 95, herein incorporated by reference. Conventional processing of the colour photographic material comprises the steps of chromogenic development, bleaching and fixing and for colour reversal materials in addition a reversal step and a black and white development. The bleaching and fixing steps can be carried out within one bleach/fixing step. Processes and the compounds especially suitable for the process of the present invention are commonly known in the art and described e.g. in Ullmann' s Encyclopedia of Industrial Chemistry, 5 edition, Vol. A20, p 68 to 98, herein incorporated by reference, in particular the color negative paper processes such as EP-2 (Eastman Kodak) and AP 92 (Agfa) for silver bromide chloride emulsions and RA-4 (Eastman Kodak) and AP 94 (Agfa) processes for predominantly silver chloride emulsions .
In another preferred embodiment of the process, according to the present invention, the conventional processing of the colour photographic material is carried out with development times between 15 and 130 s. Longer development times are necessary, if, for example, silver-rich materials are processed in order to attain a particularly high colour density.
Deformable plastic support
Deformable plastics are those which can be deformed, without fracturing, exhibiting cracks or thermally decomposing. All polymers, that are available in foil form and that are not stretched fall under the term deformable plastics .
A good reference point for the temperature necessary for deformation is the glass transition temperature (Tg) . Deformation is usually done between the glass transition temperature and the melting point of the deformable plastic. The pressure needed for deformation can easily be tested; the higher the deformation temperature is with respect to the glass transition temperature, the lower the pressure needed. Just below the melting point only a very low pressure is needed. The time needed for the deformation can also be easily tested and adjusted. A higher temperature and/or a higher pressure results in a shorter time.
Suitable support materials, e.g. foils, films or sheets, are preferably taken from the group of plastics knows as thermoplastics and include poly(vinylchloride) (PVC) , polycarbonate (PC), non- oriented polyester, acrylonitrile-butadiene-styrene (ABS) , polyolefin, copolymers and mixtures of said polymers . Suitable copolymers include vinylchloride copolymer, in particular ABS copolymerized with vinylchloride and polyolefin copolymer. According to a preferred embodiment of the deformable colour photographic silver halide material, according to the present invention, deformable plastic support is a polycarbonate, poly (vinylchloride) , vinylchloride copolymer or a polyester; or a copolyester based on PET.
Suitable polycarbonates for use in the colour photographic material of the present invention, contain repeating units represented by the formula
Figure imgf000009_0001
wherein X represents -S-, -S02-. -C(R5, R6) - or -C [=C (R7,R8) ]-; R_, R2, R3, R4, R7 and Rg independently represent a hydrogen atom, or an alkyl- or aryl- group; and R5 and Rg independently represent ahydrogen atom or an alkyl- or aryl- group or together represent the atoms necessary to form a cycloaliphatic ring, e.g. a cyclohexane ring. The polycarbonates preferably have weight averaged molecular weights between 10,000 and 500,000. Polycarbonates based on bisphenol A are particularly preferred. Poly (vinylchloride) for use in the colour photographic material of the present invention, preferably contain at least 50% by weight vinylchloride units and optionally contain further hydrophobic units. Preferred comonomers are vinylidene chloride, vinyl acetate, acrylonitrile, styrene, butadiene, chloroprene, dichlorobutadiene, vinyl fluoride, vinylidene fluoride and trifluroethylene. The poly (vinylchloride) preferably contains 60 to 65% by weight of chlorine. A PVC support used in the colour photographic material of the present invention, can contain plasticizers, but for ecological reasons and for reasons of stability of the photographic material preferably contains no plasticizers. Furthermore, the PVC can contain stabilizers and antioxidants with inorganic heavy metal salts, metal soaps (particularly of Ba, Cd, Pb, Zn and Ca) , dibutyl and dioctyl tin compounds and epoxidized soya oil. Further optional ingredients of PVC include lubricants, impact modifier, process aids, fillers, fire retardants, smoke repressants, blowing agents, colourants, antistatic agents, viscosity modifier, biostabilizers and UV absorber.
Suitable polyesters include condensation products of aromatic, aliphatic or cycloaliphatic dicarboxylic acids with aliphatic or alicyclic glycols, whereby the dicarboxylic acids have preferably 4 to 20 C-atoms and the glycols preferably 2 to 24 C-atoms. The polyesters can also be modified by adding small quantities of other monomers. Preferred polyesters are poly (ethylene terephthalate) (PET) or copolyesters based on PET (CoPET) such as the preferred CoPET Eastar PETG Copolyester 6763 delivered by Eastman (PΞTG) . However, stretched (oriented) polyesters are unsuitable, because they form micro-cracks upon deformation.
Suitable polyolefins include polypropylene, polyethylene and polymethylpentene either individually or as mixtures . Preferred polyolefins include copolymers of propylene and/or ethylene with hexene and/or butene and/or octene .
Preferred deformable plastics for deformable colour photographic materials, according to the present invention, are PVC, vinylchloride copolymer and PC, because they bend well and the photographic layer is particularly little affected. PC is particularly preferred due to its high tensile strength and ensures a good storage stability.
The support can be a single layer foil, but can also consist of a compound arrangement of several plastic foils . All plastic foils must be of a deformable plastic. The thickness of the support is preferably between 0.05 and 0.75 mm.
The support can be coated with one or several layers to provide the support with e.g. a colour layer or an adhesive layer. Depending upon the desired effect, the support can be white, transparent, translucent or coloured with dyes or pigments and may also have structure or roughness on either or both sides. Structure or roughness in the foil is preferably realized during its manufacture.
The support may contain pigments or other colorants. An opaque, white colour can be realized by coextrusion of white pigments such as titanium dioxide. Suitable colorants include dyes such as Ultramarine Blue.
To improve the adhesion of hydrophilic layers of colour photographic materials on hydrophobic supports, it is preferred to pretreat the support with a hydrophilizing process, for example corona (air ionization at about 10 to 20 kV) treatment. Furthermore, a subbing layer between the support and the layer of the layer configuration of the colour photographic material closest to the support is also preferred. In a preferred embodiment of the deformable colour photographic silver halide material, according to the present invention, the deformable colour photographic material further contains a subbing layer containing 1.3 to 80% by weight of a proteinaceous colloid, 0 to 85% by weight of colloidal silica and 0 to 30% by weight of a siloxane, which can form a reaction product with the colloidal silica. In a further preferred embodiment of the deformable colour photographic silver halide material, according to the present invention, the deformable colour photographic material, further contains a subbing layer on the same side of the support as the silver halide emulsion layers. Particularly preferred is a subbing layer that further contains 1.0 to 70% by weight of an ionogenic polyester-polyurethane, which is coated from an aqueous dispersion, in which isocyanate groups in its structure have reacted with an ionomer compound, which contains at least one active hydrogen atom and a carboxylate or sulphonate salt group, and in which the number of salt groups is sufficiently high to render the polyester-polyurethane dispersible in an aqueous medium. Preferred proteinaceous colloids are gelatin and casein, with gelatin being particularly preferred. Suitable anionic polyester-polyurethanes are disclosed in US 3,397,989, US 4,388,403 and DE-OS 3 630 045, herein incorporated by reference, with those with carboxylate and sulphonate groups, such as disclosed in US 3,397,989, being particularly preferred. The polyester- polyurethanes preferably contain a linear polyester with OH-end groups and a molecular weight between 300 and 2,000. The polyester-polyurethanes are preferably employed as an aqueous dispersion, with a particularly preferred dispersion containing the reaction products of the following components with respect to the end dispersion: 23% by weight of a polyester based on adipic acid and hexandiol with an average molecular weight of 840, 14% by weight 4, 4 '-diisocyanatodicyclohexylmethane, 2% by weight dimethylolpropionic acid and 1.5% by weight of trimethylamin, with the composition further containing 7.5% by weight N-Methyl- pyrrolidon and 52% by weight water. Said particularly preferred dispersion is called hereinafter dispersion (D-l) .
Suitable polyester-polyurethane dispersions include Dispercoll® products from BAYER. Suitable colloidal silica's include products marketed under the trade names LUDOX® (Du Pont) , SYTON® (Du Pont) and KIESELSOLE® (Bayer) . Their average particle size is preferably between 5 and 100 nm.
Suitable siloxanes are represented by the formula:
Figure imgf000012_0001
in which R1 represents a polymerizable group or has a OH- and/or
NH2- group which can react with the protein-containing colloid, particularly a group which contains a reactive halogen, an epoxy group or an cc, β-ethylenically unsaturated group. Examples of R1 are: C1CH2C0NH-A-; BrCH2CONH-A-; CH2=CH (CH3) COO-A-; CH2=C (CH3) CONH-A-;
Figure imgf000012_0002
in which A represents an alkylene group, or
Figure imgf000012_0003
and in which Y represents a bivalent hydrocarbon chain, which can be interrupted by oxygen. R2, R3 and R4 independently represent an optionally substituted hydrocarbon group such as methyl or ethyl. Suitable siloxane compounds include:
Figure imgf000012_0004
?C2H5
H I SL-4 CH2=CH-S02-(CH2)2-0-(CH2)2-S02-(CH2)2-N-(CH2)3— Si OC2H5
OC2H5
Figure imgf000013_0001
CH3
SL-8 H2C- — -CH— CHj— O— (CH2)j T Si— OCH3
O OCH3
The adhesion of the subbing layer to the support can be improved by corona-pretreatment of the support. A surfactant (wetting agent) can be added to the subbing layer coating composition to improve the wetting of the subbing layer.
Suitable wetting agents include those containing saponines and products marketed under the trade names TERGITOL® (supplied by Union Carbide Corp. and Niacet Corp.) or Manoxol® (supplied by e.g. Rohm and Haas) .
In respect of support materials and subbing layers EP-A 0 276 506 and EP-A 490 416 are herein incorporated by reference.
In a further preferred embodiment of the deformable colour photographic silver halide material, according to the present invention, the deformable plastic support is laminatable e.g. by coating the backside of the support with an adhesive layer suitable for pressure and/or heat adhesion processes. Such pressure sensitive adhesive layers are preferably covered with a protective foil. The adhesive layer, with or without protective foil, can be applied to the support at any time before lamination, thus even before the coating of the support with light-sensitive layers . It is preferred to apply the adhesive layer after processing the colour photographic material.
Provision of a protective foil on the outermost layer of the image side of the support In a preferred embodiment of the deformable colour photographic silver halide material, according to the present invention, the outermost on the image side of the deformable colour photographic material is provided with a protective foil, preferably via an adhesive layer, which, for example, protects the image from scratching and environmental effects due to oxygen, UV- light and water. The protective foil provided on the image side of the support preferably comprises homopolymers such as PVC, PC, a polyalkylene or a polyester such as PET or CoPET, in particular PVC. The protective foil can also comprise block copolymers with polymer subunits that are preferably selected from the aforementioned homopolymers; mixed copolymers obtained by mixed polymerization of at least two monomers, in particular of at least two different vinyl monomers such as a vinylchloride, an alkylene or a styrene; or blends of at least two polymers selected from the aforementioned homopolymers and/or block copolymers and / or mixed copolymers .
In a preferred embodiment of the present invention, the adhesive layer is a polyalkylene foil (adhesive foil) , in particular a polyethylene foil, that can be laminated in direct contact to the protective foil or that is adhered to the protective foil using a glue layer.
Preferably the protective foil and/or the adhesive layer and/or the glue layer if present contain a UV-absorber such as hydroxybenzophenone or hydroxybenzotriazole. Preferred UV-absorber are those known under the trade name Tinuvin and are delivered by Ciba-Geigy. Suitable protective foils, adhesives and glues include those disclosed in EP-A 0 348 310, US 4,456,667, US 4,455,359, US 4,378,392, US 4,370,397, US 3,871,119 and GB-A 2,321,977 herein incorporated by reference. The protective foil can consist of a single polymer composition or can be a mixture or a laminate of the same or different polymers, taken from the groupof PVC, PC, PET, CoPET or a polyalkylene. It is preferred, that at least one of the polymers used for the protective foil is of the same plastic material that is used for the support.
In a preferred embodiment of the protective foil used for the material, according to the present invention, the protective foil has a T„ that is similar to the Tg of the deformable plastic support. Particularly preferred adhesive foils of polyethylene have a melting point of ca. 90 to 100°C.
In a further preferred embodiment of the protective foil used for the material, according to the present invention, the protective foil can be coloured and/or printed with any kind of design, image or text.
The sandwich of protective foil, optionally a glue layer and the adhesive layer is preferably laminated to the image side of the photographic material using a roller laminator. According to a preferred embodiment of the process, according to the present invention, the deformable colour photographic silver halide material is provided with a protective foil before deforming the colour photographic material with a work piece. Deformation of the colour photographic material
The deformation of the colour photographic material usually is carried out after conventional processing of the exposed colour photographic material, but can also be done before processing and even before exposure. However, it is preferred to carry out the deformation after conventional processing of the exposed colour photographic material.
According to a preferred embodiment of the process, according to the present invention, the deforming step comprising the application of heat and pressure and wherein at least part of the deformable colour photographic material is elongated during the process. The tool used in the deformation step can, for example, be a mould into which the heated plastic is sucked, blown or pressed. In the furniture industry, for example, the piece of furniture to which the colour photographic material is to be applied, can itself be the shaping tool . In this case the shaping tool is termed the "work piece". The colour photographic material is thereby pressed onto the piece of furniture (the work piece) , for example with the aid of a membrane press, and thereby intimately attached to the piece of furniture. In this process the work piece covered with the photographic material is pressed onto an elastic membrane (usually made of rubber) which itself is placed on top of a tank completely filled with hot water of about 95°C or filled with hot oil to enable the process, according to the present invention, to be carried out at higher temperatures .
According to a preferred embodiment of the process, according to the present invention, the deforming step comprises deforming the deformable colour photographic material by vacuum deformation. Adhesion of the deformed colour photographic material to the piece of furniture is preferably supplemented with an adhesive. In the case of very soft materials deformable at room temperature (25°C) a pressure adhesive is sufficient (e.g. a contact adhesive) . The piece of furniture, e.g. a piece of chipwood, has only been taken as an example. The deformable colour photographic material, according to the present invention, can easily been used in other technical areas, e.g. the automotive industry, by just replacing the work piece and using adhesives that are known to work for the material the work piece is made of.
According to a preferred embodiment of the process, according to the present invention, the deforming step comprises deforming the deformable colour photographic material by injection moulding, wherein the photographic material is placed in a die mould and the injected plastic material deforms the photographic material and forms a single entity with the deformable colour photographic material .
In a preferred embodiment of the process, according to the present invention, the deforming step comprises deforming the deformable colour photographic material in contact with a work piece
Usually the support side of the deformable colour photographic material is applied to the work piece e.g. a piece of furniture. In this case it is preferable that the image side of the processed colour photographic material is provided with a transparent protective foil as described above just before the deformation step so as to prevent damage during the deformation step.
If the support is clear or at least transparent and not too strongly coloured, the silver halide emulsion-side of the deformable colour photographic material can be applied to the work piece. In such cases, in addition to the usual cold and hot-melt adhesives, a gelatin solution containing a gelatin-hardening agent can also be used as an adhesive. Instead of adhering the silver halide emulsion-side directly to the work piece, a preferably reflective, e.g. white or opaque protective foil can be placed in between the silver halide emulsion side of the colour photographic material and the work piece. In a preferred embodiment of the present invention, the adhesion of the deformed photographic material to the work piece is further improved, particularly at the corners and edges of the work piece and where the deformed material ends, e. g. at the corners and the edges on the back side of a piece of furniture. This can be carried out by pretreatment of the work piece, particularly at the corners and edges, with a glue before the deformation; or processing the work piece coated with the deformable photographic material with a hot-knife and/or applying glue after deformation and if necessary after having cut-off surplus photographic material to seal the corners and edges and to prevent peeling of the deformed material .
Colour photographic material
In a preferred embodiment of the colour photographic silver halide material according to the present invention, a colour photographic silver halide material able to undergo deformation without significant image degradation is provided, the colour photographic silver halide material comprising on a deformable plastic support at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green- sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, wherein the silver halide emulsions have an overall silver chloride content of at least 95 mol% and at least one silver halide emulsion contains silver halide crystals that are doped with 10 to 700 nmol iridium. In a further preferred embodiment of the present invention, the silver halide emulsions have an overall silver chloride content of at least 98 mol%. Silver halide emulsions which are substantially free from silver iodide are preferred, emulsions with less than 1 mol% iodide and in particular emulsions with less than 0.1 mol% iodide being particularly preferred. At least one silver halide emulsion used in the material, according to the present invention, preferably contains silver halide crystals that are doped with at least one dopant alone or in addition to Ir. For silver halide crystals with a high silver chloride content the preferred dopants in addition to Ir are Rh- and Hg-salts.
It is particularly preferred, that at least one blue-, at least one green- and at least one red-sensitive silver halide emulsion layer in each case comprises at least one silver halide emulsion whose silver halide crystals are doped with at least 10 to 700 nmol, preferably 10 to 500 nmol Ir.
Preferably the silver halide crystals are doped with Ir in form of Ir (IV) -salts or complexes, particularly with salts or complexes comprising halide ions such as chloride or fluoride, acetate ions, or ligands such as nitrosyl or 5-methyl thiazole.
Suitable dopants for the emulsions used in the material of the present invention and processes for the addition of the dopants are to be found in Research Disclosure 37038, parts XV-B (1995), from page 90 herein incorporated by reference.
The silver halide emulsions used in the colour photographic material of the present invention, can be prepared by a simple double jet process, a double jet process with separate preprecipitation (formation of crystal nuclei) and precipitation thereon or a combined double jet recrystallization process. In a preferred embodiment of the material according to the present invention, the preparation of at least one silver halide emulsion used for the material comprises the recrystallization of a Lippmann ( ikrate) emulsion. In a preferred embodiment, according to the present invention, the Ir dopants are added to the halide solution, when preparing the emulsions by a simple double jet process and added to the Lippmann emulsion, when a Lippmann emulsion (mikrate) recrystallization process is used. At least one silver halide emulsion preferably contains silver halide crystals with at least two different zones (structured crystals) , in which the outermost zone has a higher molar content of silver bromide than the rest of the crystal . The nucleus of the structured crystals is preferably prepared by a double jet process with a silver nitrate solution and a halide solution, predominantly chloride, and precipitation thereon preferably occurs by recrystallization of a fine-grained silver bromide-chloride emulsion (Lippmann emulsion) with a molar silver bromide content of at least 5 percent. According to a preferred embodiment of the deformable colour photographic silver halide material, according to the present invention, at least one silver halide emulsion contains structured crystals with at least two different zones, the outermost zone having a higher molar content of silver bromide than the rest of the crystal .
According to another preferred embodiment of the deformable colour photographic silver halide material, according to the present invention, at least one blue-, at least one green- and at least one red-sensitive silver halide emulsion layer in each case comprises at least one silver halide emulsion which contains the structured crystals.
According to another preferred embodiment of the deformable colour photographic silver halide material, according to the present invention, the green-sensitive silver halide emulsion layer and/or the red-sensitive silver halide emulsion layer contains at least one silver halide emulsion with silver halide crystals having an average grain size (volume averaged, diameter of a sphere with an equivalent volume) of at least 0.40 μm.
According to another preferred embodiment of the deformable colour photographic silver halide material, according to the present invention, the silver halide emulsions contain one or more binders, with the binders being at least 80% by weight of gelatin being particularly preferred.
In a preferred embodiment of the colour photographic material, according to the present invention, yellow couplers, purple couplers and blue-green couplers represented by formulae (IV) , (V) , (VI), (XIV), (VII) and (VIII) are used.
Yel
Figure imgf000019_0001
wherein
R1 represents alkyl, alkoxy, aryl or hetero-aryl groups, R2 represents alkoxy or aryloxy groups or halogen,
R3 represents -C02R6, -CONR6R7, -NHC02R6, -NHS02-R6, -S02NR6R7, -S02NHC0R6, -NHCOR6 groups, Cl
R4 represents hydrogen or a substituent,
R5 represents hydrogen or a group which can be split off during coupling,
R6, R7 independently represent hydrogen or alkyl or aryl groups and one of the R2, R3 and R4 group is a ballast group.
Magenta coupler:
Figure imgf000020_0001
wherein
R8 and R9 independently represent hydrogen or alkyl, aralkyl, aryl, aryloxy, alkylthio, arylthio, amino, anilino, acylamino, cyano, alkoxycarbonyl, alkylcarbamoyl or alkylsulfamoyl groups, wherein these groups are optionally further substituted and wherein at least one of these groups contains a ballast group, and R 10 represents hydrogen or a group which can split off during chromogenic coupling.
R8 is preferably a tert. -butyl group; R10 is preferably chlorine.
Figure imgf000020_0002
wherein r is an iteger from 1 to 5; q is 1, 2 or 3; R represents a group which can split off during chromogenic coupling; R represents halogen or alkoxy or acylamino groups; and R represents halogen or cyano, thiocyanato, alkoxy, alkyl, acylamino or alkoxycarbamyl groups .
R is preferably hydrogen or a group which can split off as an anion under the basic conditions of chromogenic coupling.
Particulary preferred, R represents -S-aryl or -N=N-aryl, wherein aryl preferably is a phenyl or naphthyl group, that is optionally substituted by halogen, like chlorine or bromine or Cι~Cχ8-alkyl or Cι-Ci8~alkoxy groups . Cyan coupler:
Figure imgf000021_0001
wherein R11, R12, R13 and R14 independently represent hydrogen or a C-^-Cg-alkyl group. R11 is preferably a CH3 or C H5; R12 is preferably a C -Cg-alkyl group; and R13 and R14 are preferably t-
Figure imgf000021_0002
wherein R15 represents alkyl, alkenyl, aryl or hetero-aryl groups; R16, R17 independently represent hydrogen, alkyl, alkenyl, aryl or hetero-aryl groups; R18 represents hydrogen or a group which can split off during chromogenic coupling; R19 represents -COR20, -C02R20, -CONR20R21, -S02R20, -SO2NR20R21, -CO-C02R2°. -COCONR20R21 or a group with the formula
Figure imgf000021_0003
wherein R20 represents alkyl, alkenyl, aryl or hetero-aryl groups; R21 represents hydrogen or R20; R22 represents -N= or -C(R25)=; R23, R24 and R25 independently represent -OR21, -SR21, -NR20R21, -R21 or Cl; and p is 1 or 2.
The following groups of couplers according to formula (VIII) are preferred:
(1) couplers in which p = 1 and R15 to R25 have the meaning given above . (2) couplers in which p = 2, R19 represents -CO-R, R represents alkenyl or hetero-aryl groups and R15 to R18 have the meanings given above. (3) couplers in which p = 2, R19 represents -S02R27. -S02N(R27)2. -C02R27, -COC02-R27, or -COCO-N (R27) 2, R27 represents alkyl, aryl, alkenyl or hetero-aryl groups and R15 to R18 have the meanings given above. (4) couplers in which p = 2, R19 represents a group with the formula
Figure imgf000022_0001
and R15 to R18 and R22 to R24 have the meanings given above. (5) couplers in which p = 2 and R19 represents a group with the formula
Figure imgf000022_0002
R28 represents hydrogen, Cl, CN, Br, F, -COR29, -CONHR29 or C0R29 and R29 represents alkyl or aryl groups. (6) couplers in which p = 2 and R19 represents a group with the formula
Figure imgf000022_0003
wherein R1 represents halogen, CN, -CF3 or alkoxycarbonyl groups; R11 represents hydrogen or has the same meaning as R1; and R15 to R18 have the meanings given above. (7) couplers in which p = 2 and R19 represents -COR20; R20 represents alkyl, aryl or hetero-aryl groups and R15 to R18 have the meanings given above. (8) couplers in which p = 2 and R19 represents a group with the formula
Figure imgf000022_0004
wherein R1 represents -OR11 or -N 113^**^; R11 and R111 represent an optionally substituted C*-_-Cg-alkyl group; RIV represents hydrogen or has the same meaning as R111; and R1-*' to R18 have the meanings given above. In the formula (VIII) and the Compounds (1) to (8) the substituents have the following preferred meanings: R15 represents alkyl or aryl groups; R16 and R17 independently represent H or alkyl or aryl groups; R18 represents H, Cl, alkoxy, aryloxy, alkylthio or arylthio groups; R22 represents -N=; and R23 and R24 independently represent -OR21, -NR20R21 or -Cl.
In formula (VIII) and the Compounds (1) to (8) the substituents have the following particularly preferred meanings : R15 is a group according to one of formulae (15-1) , (15-2) and (15-3) :
Figure imgf000023_0001
wherein R represents an alkyl group with at least 8 C- atoms ;
Figure imgf000023_0002
wherein R1 represents alkyl, alkenyl, alkoxy, aryloxy, 5 acyloxy, acylamino, sulfonyloxy, sulfamoylamino, sulfonamido, ureido, hydroxycarbonyl, hydroxy, carbonylamino, carbamoyl, alkylthio, arylthio, alkylamino, arylamino groups or hydrogen; R11 represents an alkyl or aryl group; X represents S, NH or NR111 and R111 represents 0 an alkyl or aryl group;
Figure imgf000023_0003
wherein R1 represents an optionally substituted alkyl group; _χ represents an alkyl group, in particular C^-C^alkyl group; R17 represents H; and R20 represents an alkyl or aryl group. 5 Particularly preferred couplers are group (6) couplers according to formula (VIII) in which R 15 is represented by formula (15-1); group (7) couplers according to formula (VIII) in which R 15 is represented by formula (15-2); group (8) couplers according to formula (VIII) in which R 15 is represented by formula (15-3) ; and ιø group (8) couplers according to formula (VIII) and R 15 is a group with 8 to 18 carbon atoms.
Alkyl- and alkenyl- groups can be straight chain, branched, cyclic and optionally substituted. Aryl- and hetero-aryl- groups are optionally substituted and the aryl group is preferably a phenyl group. Possible substituents for the alkyl, alkenyl, aryl and hetero-aryl groups are: alkyl, alkenyl, aryl, hetero-aryl, alkoxy, aryloxy, alkenyloxy, hydroxy, alkylthio, arylthio, halogen, cyano, acyl, acyloxy or acylamino groups, wherein an acyl group can be derived from an aliphatic, olefinic or aromatic carbonic, carboxylic, carboxylamino, sulfonic, sulfonamido, sulfinic, phosphoric, phosphonic or phosphorous acid.
Examples of cyan couplers according to formula (VII) are:
VII-1 with R11 = C2H5, R12 = n-C4H9, R13 = R14 = t-C4H9,
VI1-2 with R11 = R12 = C2H5, R13 = R14 = t-C5H1:L,
VII-3 with R11 = C2H5, R12 = n-C3H7, R13 = R14 = t-C5Hllr
VII-4 with R11 = CH3, R12 = C2H5, R13 = R14 = t-C5H .
Examples of cyan couplers according to formula (VIII) with p = 2 are:
Figure imgf000024_0001
Figure imgf000025_0001
Figure imgf000026_0002
Examples of cyan couplers according to formula (VIII) with p = 2 and
Figure imgf000026_0001
are:
Figure imgf000027_0001
Examples of cyan couplers according to formula (VIII) with p = 1 are:
Figure imgf000028_0001
Figure imgf000029_0001
Figure imgf000030_0001
Figure imgf000031_0001
Examples of group (6) cyan couplers according to formula (VIII) with p = 2 are:
Figure imgf000032_0001
Examples of group (7) cyan couplers according to formula (VIII) with p = 2 are :
Figure imgf000032_0002
Figure imgf000033_0001
Examples of group (8) cyan couplers according to formula (VIII) with p = 2 are :
Figure imgf000033_0002
Figure imgf000034_0001
Figure imgf000035_0002
The preparation of cyan couplers according to formula (VIII) proceeds analogously to the syntheses disclosed in US 5,686,235 herein incorporated by reference.
Examples of magenta couplers according to formula (V) are:
Figure imgf000035_0001
Figure imgf000036_0001
Figure imgf000037_0001
and
Figure imgf000037_0002
Examples of magenta couplers according to formula (VI) are :
Figure imgf000038_0001
Figure imgf000038_0002
Figure imgf000039_0001
and
Figure imgf000039_0002
Figure imgf000040_0001
Figure imgf000041_0001
Examples of magenta couplers according to formula (XIV) are:
Figure imgf000041_0002
Figure imgf000041_0003
Figure imgf000042_0001
Figure imgf000043_0001
Figure imgf000043_0002
Figure imgf000043_0003
Figure imgf000044_0002
Figure imgf000044_0001
Figure imgf000044_0003
Figure imgf000045_0001
Figure imgf000045_0003
Figure imgf000045_0002
Figure imgf000046_0001
Figure imgf000046_0003
Figure imgf000046_0002
Figure imgf000046_0004
Figure imgf000047_0001
Figure imgf000047_0002
Figure imgf000048_0001
Figure imgf000048_0003
Figure imgf000048_0002
Figure imgf000049_0002
Figure imgf000049_0001
Figure imgf000050_0001
Examples of yellow couplers according to formula (IV) are:
Figure imgf000050_0002
IV-2
hhCOC17H33
Figure imgf000051_0001
Figure imgf000051_0002
IV- 7
IV- 8
IV- 9
IV-10
Figure imgf000052_0001
Figure imgf000052_0002
Figure imgf000053_0001
Figure imgf000054_0001
Figure imgf000055_0001
IV-26
IV-27
Figure imgf000056_0001
Figure imgf000056_0002
Figure imgf000057_0001
Figure imgf000057_0002
Figure imgf000057_0003
Figure imgf000058_0001
IV-40
IV- 41
Figure imgf000059_0001
Figure imgf000059_0002
Figure imgf000060_0001
Figure imgf000061_0001
CH,
IV-52 /
0 0 "
(CH3)3C
NHCOC17H35
\ KI
Figure imgf000061_0002
According to a preferred embodiment of the deformable colour photographic silver halide material, according to the present invention, the blue-sensitive silver halide emulsion layer contains a blue sensitizer represented by formula (IX) :
Figure imgf000062_0001
wherein X1 and X2 independently represent S or Se, R31 to R36 independently represent hydrogen, halogen or an alkyl-, alkoxy, aryl or hetero-aryl group or R31 and R32; R32 and R33; R34 and R35; R35 and R36 together represent the atoms necessary to form an anellated benzo-, naphtho- or heterocyclic ring, R37 and R38 independently represent an alkyl-, sulfoalkyl-, carboxyalkyl,- (CH2) 1S02R39S02-alkyl, - (CH2) 1S02R3CO-alkyl, - (CH2) 1COR39S02-alkyl or - (CH2)!-COR39CO-alkyl group, R39 represents -N~- or -NH-, 1 is a whole number between 1 and 6 and is an optional counter-ion providing charge compensatio .
R31 to R36 preferably independently represent hydrogen, F, Cl, Br or alkyl, CF3, OCH3 or phenyl groups; or R31 and R32; R32 and R33. R34 and R35. or R35 ancj R36 together represent the atoms necessary to form an anellated benzo- or naphtho-ring.
Particularly suitable blue sensitizers include the following compounds, in which "Et" represents Ethyl:
IX-1 IX-2
Figure imgf000062_0002
IX-3
IX-4
Figure imgf000063_0001
IX-5 IX-6
Figure imgf000063_0002
IX-7 IX-8
Figure imgf000063_0003
IX-9 IX-10
Figure imgf000063_0004
IX-11 IX-12
Figure imgf000064_0001
IX-13 IX-14
Figure imgf000064_0002
IX-15 IX-16
Figure imgf000064_0003
IX-17
IX-18
Figure imgf000064_0004
IX-21 IX-22
Figure imgf000065_0001
IX-23 IX-24
Figure imgf000065_0002
IX-25 iχ.26
Figure imgf000065_0003
IX-27 IX-28
Figure imgf000066_0001
IX-29 IX-30
Figure imgf000066_0002
IX-31 IX-32
Figure imgf000066_0003
IX-33
IX-34
Figure imgf000066_0004
In a preferred embodiment of the present invention, the colour photographic material contains at least one blue-sensitive layer comprising a blue sensiti-ier according to formula (IX) wherein: X1 and X2 represent S, R35 represents a trifluormethyl group or a halogen atom, in particular a chlorine atom, R32 and R33 together represent the atoms necessary to form an anellated benzo-, naphtho- or heterocyclic ring, particularly an anellated benzo-ring and R37 and R38 independently represent sulfoalkyl-, carboxyalkyl,
- (CH2) 1S02R39S02-alkyl, - (CH2) 1S02R39CO-alkyl-, - (CH2) 1COR3 S02- alkyl, - (CH2) ι~COR39CO-alkyl, particularly sulfoalkyl groups. Suitable red sensitizers include compounds according to formula (X) and (XI) :
Figure imgf000067_0001
M
Figure imgf000067_0002
M wherein R4-*- to R4° independently represent hydrogen, halogen or an alkyl-, alkoxy, aryl or hetero-aryl group; or R41 and R42; R42 and R43. 44 and R45.or 45 and R46 together represent the atoms necessary to form an anellated benzo-, naphtho- or heterocyclic ring, R47 and R48 independently represent an alkyl-, sulfoalkyl-, carboxyalkyl, -(CH2)ιS02YS02-alkyl, - (CH2) 1S02YCO-alkyl, - (CH2)1COYS02-alkyl or - (CH2) x-COYCO-alkyl group, Y represents -N~- or -NH-, R49 and R50 independently represent a hydrogen atom or an alkyl- or an aryl group, R51 represents a hydrogen atom, a halogen atom or an alkyl group and represents an optional counter-ion providing charge compensation.
R41 to R45 preferably independently represent hydrogen, F, Cl, Br or alkyl, CF3, OCH3 or phenyl groups; or R41 and R42; R42 and R43. R44 and R45. or R45 and R46 together represent the atoms necessary to form an anellated benzo- or naphtho-ring. Examples of red sensitizers are given below, wherein "Et" represents Ethyl:
X-1 X-2
Figure imgf000068_0001
X-3 X-4
Figure imgf000068_0002
Figure imgf000069_0001
X-15 X-16
Figure imgf000069_0002
X-17 X-18
Figure imgf000070_0001
X-20
X-19
Figure imgf000070_0002
XI-1 XI-2
Figure imgf000070_0003
Figure imgf000070_0004
XI-7 XI-8
Figure imgf000071_0001
Figure imgf000071_0002
XI-11
XI-12
Figure imgf000071_0003
XI-13 XI-14
Figure imgf000072_0001
XI-15
XI-16
Figure imgf000072_0002
XI-17 XI-18
Figure imgf000072_0003
XI-19 XI-20
Figure imgf000072_0004
XI-21 XI-22
Figure imgf000073_0001
XI-25
Figure imgf000073_0002
In a further preferred embodiment of the deformable colour photographic silver halide material, according to the present invention, the deformable colour photographic material contains a layer containing at least one compound represented by formula (XII)
Figure imgf000073_0003
(XII).
52 53 in which R represents H, CH3 or OCH3; R represents H, OH, CH3,
54 54 54
OCH3, NHCO-R , COOR , S02NH2 , NHC0NH2 or NHCONH-CH3; and R represents a Cι~C4-alkyl group. Compounds according to formula (XII) are preferably present in a light-sensitive layer in a quantity of 50 to 5000 mg per kg Ag, particularly preferably in a quantity of 200 to 2000 mg per kg Ag.
Preferred compounds according to formula (XII) are given below:
Figure imgf000073_0004
Figure imgf000074_0002
In a particularly preferred embodiment of the present invention, the colour photographic material contains a compound according to formula (XII) in a blue-sensitive silver halide emulsion layer.
In a preferred embodiment of the present invention, the colour photographic material contains at least one layer containing a compound according to formula (XIII) :
Figure imgf000074_0001
in which R 5'5 represents a substituent and n is 1, 2 or 3. Preferably represents a polar group, in particular a sulfo group, a sulfonate group, or a substituted or unsubstituted sulfonamido group. The sulfonamido group can be bonded through the S- or the N-atom of the grou .
Compounds according to formula (XIII) are preferably present in a red-sensitive silver halide emulsion layer in a quantity of 100 to 5000 mg per kg Ag, particularly preferably in a quantity of 500 to 3000 mg per kg Ag.
Stabilizers according to formula (XIII) are particularly
55 preferred in which represents R56-
N- -SO;
57.
R and; R and R independently represent H, Cl or Cι-C4-alkyl, phenyl or chlorophenyl groups.
Particularly preferred compounds according to formula (XIII) include:
5
Figure imgf000075_0001
In a particularly preferred embodiment of the present invention, the red-sensitive layer contains at least one compound w according to formula (XII) and at least one compound according to formula (XIII) .
The main ingredients of photographic emulsion layers are binders, silver halide crystals and colour couplers . Details over suitable binders are to be found in Research Disclosure 37254, part is 2 (1995) page 286, herein incorporated by reference.
The mostly hydrophobic colour couplers, as well as other hydrophobic ingredients in the layer, are usually dissolved or dispersed in high boiling point organic solvents . These solutions or dispersions are then emulsified in an aqueous binder solution
20 (usually gelatin) and remain in the layers after drying as fine droplets (0.05 to 0.8 μm in diameter).
Suitable high boiling point organic solvents, methods for incorporation in the layers of a photographic material and other methods to incorporate chemical compounds in photographic layers
25 are to be found in Research Disclosure 37254, part 6 (1995) page 292, herein incorporated by reference.
The light-insensitive layers generally coated between the light-sensitive layers with different spectral sensitivities can contain ingredients, which hinder undesirable diffusion of
30 developer oxidation products from one light-sensitive layer to another such layer with different spectral sensitization.
Suitable compounds (white couplers, scavengers for developer oxidation products (also called DOP scavengers, Dox scavengers, interlayer scavengers or just scavengers) are to be found in
35 Research Disclosure 37254, part 7 (1995) page 292 and in Research Disclosure 37038, part III, page 84 herein incorporated by reference . The colour photographic material may further contain UV-light absorbing compounds, brighteners, spacing agents, filter dyes, formaldehyde captors, anti-fading agents, antioxidants, Dmin-dyes, additives to improve the dye, coupler and white image area stability, additives to reduce colour fog, plasticizers (latices) , biocides and polyvinylpyrrolidone. Such additives and other additives can be contained in the emulsion and interlayers, but can also be contained in additional layers between the support and emulsion layers and/or on the non-emulsion layer-bearing side of the support. Suitable compounds are to be found in Research
Disclosure 37254, part 8 (1995) page 292 and in Research Disclosure 37038, parts IV, V, VI, VII, X, XI and XIII (1995), from page 84 herein incorporated by reference.
The layers of the colour photographic material are usually hardened i.e. the binders used, preferably gelatin, is crosslinked by a suitable chemical process. Immediate or fast hardeners are preferably employed. Suitable immediate and fast hardeners are to be found in Research Disclosure 37254, part 9 (1995), page 294 and in Research Disclosure 37038, part XII (1995), page 86, herein incorporated by reference.
The outermost layers of the photographic material and in particular the outermost layer on the image side can be embossed and/or coloured and/or printed with any kind of design, image or text. Industrial application
The process for producing a deformed image, according to the present invention, can be used to apply any kind of representations like images, designs, patterns, letters and so forth to a wide variety of work pieces including pieces of furniture.
The invention is illustrated hereinafter by way of comparative and invention examples. The percentages and ratios given in these examples are by weight unless otherwise indicated.
The following compounds were used in the EXAMPLES:
Figure imgf000077_0001
NH,
Figure imgf000077_0002
Figure imgf000078_0001
Figure imgf000078_0002
Figure imgf000079_0001
PREPARATION OF SILVER HALIDE EMULSIONS Lippmann emulsion (EmMl)
The following solutions were prepared:
Figure imgf000080_0001
Solutions 02 and 03 at 40°C were simultaneously added at a constant rate to Solution 01 in a precipitation vessel at a pAg of 7.7 and a pH of 5.3 with vigorous stirring over a period of 30 minutes. During the precipitation the pAg-value was maintained by adding a sodium chloride solution and the pH maintained by adding dilute sulphuric acid to the precipitation vessel. A silver chloride emulsion was obtained with an average silver chloride grain size of 0.09 μm. The weight ratio of gelatin to silver nitrate was 0.14. The emulsion was then subjected to ultrafitration at 50°C and redispersed with sufficient gelatin and deionized water to yield a dispersion containing 200g of silver chloride per kg dispersion, a weight ratio of gelatin to silver nitrate (equivalent to AgX present) of 0.3 and an average silver chloride grain size of 0.13 μm.
Lippmann emulsion (EmM2) :
Lippmann emulsion EmM2 was prepared as described for EmMl except that Solution 04 was used instead of Solution 02.
Figure imgf000080_0002
The emulsion obtained contained 90 mol% silver chloride, 10 mol% silver bromide and 70 x 10 -9 mol Ir4+ per mol silver chloride.
Lippmann emulsion (EmM3) Lippmann emulsion EmM3 was prepared as described for EmMl except that Solution 05 was used instead of Solution 02.
Figure imgf000081_0001
The emulsion obtained contained 2000 x 10 -9 mol Ir4+ per mol silver chloride .
BLUE-SENSITIVE EMULSIONS EmBl-ΞmB3:
EmBl:
The following solutions were prepared:
Figure imgf000081_0002
Solutions 12 and 13 at 50°C were simultaneously added to Solution 11 in a precipitation vessel at a pAg of 7.7 with vigorous stirring over a period of 150 minutes. During the precipitation the pAg- value was maintained by adding a sodium chloride solution and a pH of 5.3 was maintained by adding dilute sulphuric acid to the precipitation vessel. The addition rate of both Solutions 12 and 13 was so regulated that in the first 100 minutes it increased linearly from 2 mL/min to 16 mL/min and during the final 50 minutes was held constant at 20 mL/min. A silver chloride emulsion was thereby obtained with an average silver chloride grain size of 0.85 μm. The weight ratio of gelatin to silver nitrate (equivalent to AgX) was 0.14. The emulsion was then subjected to ultrafiltration at 50°C and redispersed with sufficient gelatin and deionized water to yield a dispersion containing 200g of silver chloride per kg dispersion and a weight ratio of gelatin to silver nitrate
(equivalent to AgX present) of 0.56. The emulsion thereby obtained contained 5 x 10 -9 mol Ir4+ per mole of silver chloride.
The emulsion first was prestabilized with 0.01 mmol of compound EST-6 and then was chemically ripened at a pH of 5.3 with
0.13 x 10 mol ammonium tetrachloroaurate and 5.4 x 10 mol sodium thiosulphate per mole of silver chloride for 180 minutes at a temperature of 47°C. After chemical ripening the following ingredients were added per mole of silver chloride at 40°C: 0.3 mmol of the spectral sensitizing compound (IX-1), 0.5 mmol of the stabilizing compound XII-8, 0.5 mmol of the stabilizing compound
EST-1 and finally 0.6 mmol of potassium bromide.
EmB2:
The precipitation, desalting and redispersion were carried out as described for EmBl, except that 28.4 μg K2IrClg was added to solution 12. The emulsion thereby obtained contained 10 x 10 -9 mol
Ir 4+ per mole silver chloride. The emulsion first was prestabilized with 0.01 mmol of compound EST-6 and then was chemically ripened at a pH of 5.3 with 0.13 x 10 mol ammonium tetrachloroaurateand 5.4 x 10 mol sodium thiosulphate per mole of silver chloride for 180 minutes at a temperature of 47°C. After chemical ripening the following ingredients were added per mole of silver chloride at 40°C: 0.3 mmol of the spectral sensitizing compound (IX-1), 0.5 mmol of the stabilizing compound XII-8, 0.5 mmol of the stabilizing compound ΞST-1 and finally 0.6 mmol of potassium bromide.
EmB3:
The emulsion is prepared by recrystallization of the Lippmann emulsion EmM2 onto the separate preprecipitate emulsion (nucleus emulsion) EmVl, which was prepared as follows:
Preparation of the preprecipitate emulsion EmVl:
The precipitation, desalting and redispersion were carried out as described for EmBl, except that the amount of EmMl added to solution 11 was increased to 40 g. A silver chloride emulsion was thereby obtained with an average silver chloride grain size of 0.82 μm. Preparation of ΞmB3 :
1.5 kg of EmVl (representing 300 g AgN03) melted at 40°C in a precipitation vessel while stirring. In a separate vessel 0.25 kg of Lippmann emulsion EmM2 (representing 50 g AgN03) was melted at j 40°C while stirring. Under vigorous stirring, 25 ml of a 20 % by weight NaCl solution was added to EmVl . After a digestion of 5 minutes EmM2 is added to EmVl within 50 minutes at a constant rate. After a digestion of 10 minutes the emulsion was then redispersed with sufficient gelatin and deionized water to yield a weight ratio 0 of gelatin to silver nitrate (equivalent to AgX present) of 0.56. A silver chloride emulsion was thereby obtained with an average silver chloride grain size of 0.85 μm. The emulsion thereby
-9 44* obtained contained 10 x 10 mol Ir per mole of silver chloride.
5 The emulsion first was prestabilized with 0.01 mmol of compound EST-6 and then was chemically ripened at a pH of 5.3 with 0.13 x 10 mol ammonium tetrachloroaurate and 5.4 x 10 mol sodium thiosulphate per mole of silver chloride for 180 minutes at a temperature of 47°C. After chemical ripening the following 0 ingredients were added per mole of silver chloride at 40°C: 0.3 mmol of the spectral sensitizing compound (IX-1), 0.5 mmol of the stabilizing compound XII-8, 0.5 mmol of the stabilizing compound EST-1 and finally 0.6 mmol of potassium bromide.
5 GREEN-SENSITIVE EMULSIONS ΞmGl~EmG3:
EmGl:
The following solutions were prepared: 0
Figure imgf000083_0001
Solutions 22 and 23 at 48°C were simultaneously added to Solution
21 in a precipitation vessel at a pAg of 7.7 with intensive stirring over a period of 75 minutes. During the precipitation the pAg-value was maintained by adding a sodium chloride solution and a pH-value of 5.3 was maintained by adding dilute sulphuric acid to the precipitation vessel. The addition rate of both solutions 22 and 23 was so regulated that in the first 50 minutes it increased linearly from 4 mL/min to 36mL/min and during the final 25 minutes was held constant at 40 mL/min. A silver chloride emulsion was thereby obtained with an average silver chloride grain size of 0.50 μm. The weight ratio of gelatin to silver nitrate (equivalent to AgX) was 0.14. The emulsion was then subjected to ultrafitration at 50°C, washed and redispersed with sufficient gelatin and deionized water to yield a dispersion containing 200g of silver chloride per kg dispersion, 5 x 10 -9 mol Ir4+ and 2.5 x 10-9 mol Rh 3+ per mol silver chloride and a weight ratio of gelatin to silver nitrate (equivalent to AgX present) of 0.56.
The emulsion was then chemically ripened at a pH of 6.0 with
—6 —6
0.82 x 10 mol ammonium tetrachloroaurate and 2.74 x 10 mol sodium thiosulphate per mole of silver chloride for 240 minutes at a temperature of 45°C. After chemical ripening the following ingredients were added per mole AgCl at 40°C: 0,6 mmol of the green sensitizing compound (GS-2) , 2.4 mmol of the stabilizing compound EST-3, 1.2 mmol of the stabilizing compound (ΞST-1) , 0,6 mmol of the stabilizing compound (XII-1) and finally 3 mmol of potassium bromide .
EmG2:
The precipitation, desalting and redispersion were carried out as described for EmGl except that the amount of K2IrClg in Solution
22 was increased from 14,2 μg to 284 μg. The emulsion thereby obtained contained 100 x 10 —9 mol Ir4+ per mole silver chloride.
The emulsion was then chemically ripened at a pH of 6.0 with 0.574 x 10 mol ammonium tetrachloroaurate and 1,92 x 10 mol sodium thiosulphate per mole of silver chloride for 240 minutes at a temperature of 45°C. After chemical ripening the following ingredients were added per mole AgCl at 40°C: 0,6 mmol of the green sensitizing compound (GS-2), 2.4 mmol of the stabilizing compound EST-3, 1.2 mmol of the stabilizing compound (EST-1), 0,6 mmol of the stabilizing compound (XII-1) and finally 3 mmol of potassium bromide . EmG3 :
The emulsion is prepared by recrystallization of the Lippmann j emulsion EmM3 onto the separate preprecipitate emulsion (nucleus emulsion) EmV2, which was prepared as follows:
Preparation of the preprecipitate emulsion EmV2:
The precipitation, desalting and redispersion were carried out as 0 described for EmGl, except that the amount of EmMl added to solution 21 was increased to 250 g. A silver chloride emulsion was thereby obtained with an average silver chloride grain size of 0.46 μ .
5 Preparation of EmG3 :
1.5 kg of EmV2 (representing 300 g AgN03) melted at 40°C in a precipitation vessel while stirring. In a separate vessel 0.5 kg of Lippmann emulsion EmM3 (representing 100 g AgN03) was melted at 50°C while stirring. Under vigorous stirring, 25 ml of a 20 % by 0 weight NaCl solution was added to ΞmV2. After a digestion of 5 minutes EmM3 is added to EmV2 within 80 minutes at a constant rate. After a digestion of 10 minutes the emulsion was then redispersed with sufficient gelatin and deionized water to yield a weight ratio of gelatin to silver nitrate (equivalent to AgX present) of 0.56. A 5 silver chloride emulsion was thereby obtained with an average silver chloride grain size of 0.51 μm. The emulsion thereby obtained contained 504 x 10 -9 mol Ir4+ and 0.625 nmol Rh***3ix"*" per mole of silver chloride.
The emulsion was then chemically ripened at a pH of 6.0 with 0 0.33 x 10 mol ammonium tetrachloroaurate and 1.10 x 10 mol sodium thiosulphate per mole of silver chloride for 240 minutes at a temperature of 45°C. After chemical ripening the following ingredients were added per mole AgCl at 40°C: 0,6 mmol of the green sensitizing compound (GS-2), 2.4 mmol of the stabilizing compound 5 EST-3, 1.2 mmol of the stabilizing compound (EST-1), 0,6 mmol of the stabilizing compound (XII-1) and finally 3 mmol of potassium bromide .
RED-SENSITIVE EMULSIONS ΞmRl-EmR3: 0 EmRl :
The precipitation, desalting and redispersion were carried out as described for EmG2. The emulsion was chemically ripened at a pH of 5.0 with 2.2 x 10~ mol ammonium tetrachloroaurate and 9.0 x 10 mol sodium thiosulphate per mole silver chloride for 280 minutes at a temperature of 65°C. After chemical ripening the following ingredients were added per mole AgCl at 40 °C: 75 μmol of the spectral sensitizing compound (X-l) , 2.5 mmol of the stabilizing compound EST-4 and finally 3 mmol of potassium bromide. The
-9 4+ -9 emulsion thereby obtained contained 5 x 10 mol Ir and 2.5 x 10
3+ mol Rh per mole silver chloride.
EmR2:
The precipitation, desalting and redispersion were carried out as described for EmRl, exept that 142 μg K2IrClg and 3.8 μg RhCl3 x 3 H20 were added to solution 22. The emulsion was chemically ripened at a pH of 5.0 with 1.32 x 10 mol ammonium tetrachloroaurate and 9.0 x 10 mol sodium thiosulphate per mole silver chloride for 280 minutes at a temperature of 65°C. After chemical ripening the following ingredients were added per mole AgCl at 40°C: 75 μmol of the spectral sensitizing compound (X-l), 2.5 mmol of the stabilizing compound EST-4 and finally 3 mmol of potassium bromide.
-9 44* The emulsion thereby obtained contained 50 x 10 mol Ir and 2.5 x 10 -9 mol Rh3+per mole silver chloride.
EXAMPLE 1
A colour photographic material, suitable for photographic processing, was prepared by coating the following layers in the following order onto a PVC plastic foil. The silver halide coverage is given as equivalent quantities of silver nitrate.
LAYER ASSEMBLY 111:
Support: 220 μm thick PVC toned white with Ti02 (comprising no plastizisers) - corona pretreated
2 Subbing layer: 0.4 g/m gelatin
2 1.5 ml/m 40 % aqueous dispersion of dispersion D-l
2 6.0 ml/m 30 % aqueous dispersion of colloidal silica
(average particle size 0.025 μm, pH of 8) 2 0.1 ml/m 5 % aqueous solution of wetting agent
® Tergitol 4 (supplied by Niacet Corporation) 0.1 g/m silane SL-1 26.0 g/m deionized water
Layer 2 : (blue-sensitive layer)
Blue-sensitized silver halide emulsion EmBl (99,94 mol-% chloride, 0.06 mol-% bromide, average grain
2 size 0.85 μm) equivalent to 0.48 g/m AgN03
2 1.00 g/m gelatin 0.20 g/m yellow coupler GB-1
2 0.40 g/m yellow coupler GB-3
2 0.30 g/m tricresylphosphate (TKP)
0.10 g/m2 stabilizer ST-1
Layer 3: (interlayer)
2 1.00 g/m gelatin
2 0.06 g/m Dox-scavenger SC-1
0.06 g/m Dox-scavenger SC-2
0.12 g/m2 TKP
Layer 4: (green-sensitive layer)
Green-sensitized silver halide emulsion EmGl (99 mol-
% chloride, 1 mol-% bromide, average grain size 0.37
2 μm) equivalent to 0.35 g/m AgN03.
2 0.76 g/m gelatin
0.44 g/m magenta coupler XIV-43
0.07 g/m2 stabilizer ST-2
0.14 g/m2 stabilizer SC-2
0.18 g/m2 TKP
Layer 5: (UV-protection layer)
2 1.05 g/m gelatin
0.35 g/m2 UV-Absorber UV-1
0.20 g/m2 UV-Absorber UV-2
0.13 g/m2 UV-Absorber UV-3
0.06 g/m Dox-scavenger SC-1
2 0.06 g/m Dox-scavenger SC-2
0.33 g/m2 TKP
Layer 6: (red-sensitive layer)
Red-sensitized silver halide emulsion EmRl (99.0 mol-
% chloride, 1 mol-% bromide, average grain size 0.37 μm) equivalent to 0.33 g/m AgN03
2 0.81 g/m gelatin
0.42 g/m2 cyan coupler VII-2
0.20 g/m2 TKP 0.20 g/m dibutyl phthalate
Layer 7: (UV-protection layer)
2 0.54 g/m gelatin
0.35 g/m2 UV-Absorber UV-1
0.10 g/m2 UV-Absorber UV-2
0.05 g/m2 UV-Absorber UV-3
0,15 g/m2 TKP
Layer 8 : (protective layer)
2 0.90 g/m gelatin
2 0.05 g/m brightener W-l
2 0.07 g/m polyvinylpyrrolidone
2 1.20 ml/m silicon oil
2 2.50 mg/m spacing agent of poly (methylmethacrylate) average particle size 0.8 μm 2 0.30 g/m immediate hardening agent H-l
EXAMPLES 2 to 9
The layer assemblies of the colour photographic materials of EXAMPLES 2 to 9 with layer assemblies of 112, 113, 121 to 123 and 131 to 133 respectively were prepared analogously to that of EXAMPLE 1 except the differences that are summarized in Table 1 :
Table 1:
Figure imgf000088_0001
*) Support A: 220 μm thick PVC toned white with Ti02 (comprising no plastizisers) - corona pretreated *> Support B: PC foil (175 μm thick; supplied by General Electric) - corona pretreated
*■> Support C: 220 μm thick PVC toned white with Ti02 (comprising plastizisers) - corona pretreated
Table 2 gives the quantity of iridium dopant and the preparation method used for the silver halide emulsion layers given in Table 1. The Ir-quantities are molar ratios with respect to silver halide.
Table 2:
Figure imgf000089_0001
Chemical processing of photographic materials of EXAMPLES 1 to 9
All the EXAMPLES were processed as follows:
a) developed for 45 s at 35°C with a colour developer with the following composition:
9.0 g triethanolamine
4.0 g N,N-diethylhydroxylamine
0.05 g diethylenglycol
5.0 g 3-methyl-4-amino-N-ethyl-N-methansulfonamidoethyl- anilin-sulphate
0.2 g potassium sulphite
0.05 g triethylenglycol
22 g potassium carbonate
0.4 g potassium hydroxide 2.2 g ethylendiamine-tetra-acetic acid disodium salt 2.5 g potassium chloride
0.3 g l,2-dihydroxybenzol-3, 4, 6-trisulfonic acid trisodium salt
made up with water to 1000 mL; pH = 10.0
b) bleaching/fixing for 45 s at 35°C with a bleacher/fixer bath with the following composition:
75 g ammonium thiosulphate
13.5 g sodium hydrogen sulphite
2.0 g ammonium acetate
57 g ethylene-diamine-tetra-acetic acid iron ammonium salt
9.5 g 25% aqueous ammonia
made up with acetic acid to 1000 ml; pH = 5.5
c) washing with deionized water at 33°C for 2 minutes
d) drying
Evaluation of sensitometric properties of colour photographic materials of EXAMPLES 1 to 9
The sensitometric evaluation results obtained by digital laser exposure are presented in Table 3 in the form of the following parameters :
Dmin : Minimum density of the one day old material without exposure according to X-Rite Status A for the yellow layer (Dmin Y) , the magenta layer (Dmin M) and the cyan layer (Dmin C) .
Gamma-value G3: shoulder gradation x 100, i.e. 100 times the slope of the sensitometric curve between a density of Dmin + 1.60 and a density of Dmin + 2.15 of the one day old material according to X-Rite Status A for the yellow layer (G3 Y) , the magenta layer (G3 M) and the cyan layer (G3 C) .
One day old material means, that the unexposed and unprocessed material was stored for one day at a temperature of 25 °C without controlling the relative humidity. This is done to get better reproducible results.
EXPOSURE :
The sensitometric properties of the colour photographic material were determined upon digital exposure by exposing it with an digital printer with the following technical specifications :
Red laser: wavelength of 683 nm
Green laser: wavelength of 543 nm
Blue laser: wavelength of 458 nm
Optical resolution: 400 dpi
Exposure time:approx. 131 ns per pixel (pixel exposure time) Number of colour steps attained: 256 per channel
First an area of the sample was so exposed at an pixel exposure time of 131 ns with an intensity I, that the density D after processing was ca. 0.6 (according to X-Rite Status A). Then the light intensity was so reduced or increased that the logarithm of the exposure, log (I x t) was 0.1 lower or 0.1 higher than the previous exposure step. This procedure was followed until in total 29 steps were exposed. The lowest step corresponded to a zero light intensity (Dmin) .
STORAGE STABILITY TEST:
A part of the freshly prepared unexposed and unprocessed material was stored for 4 weeks at 37°C without controlling the relative humidity. Following the material was exposed, processed and sensitometrically evaluated as described above. Table 4 gives for each example the difference of Dmin after storage minus Dmin of the one day old material as ΔDmin values and the difference of G3 after storage minus G3 of the one day old material as ΔG3 values .
SENSITOMETRIC AND STABILITY RESULTS
The sensitometric results of the one day old layer assemblies are summarized in table 3. Table 3 :
Figure imgf000092_0001
*) not measurable, because G3 was less then 0.100
The results given in table 3 clearly show, that the materials of the present invention, containing emulsions with a high iridium content exhibit a lower Dmin and a higher G3 then emulsions with less irdium and therefore are particularly suitable for digital exposure .
The sensitometric changes on storage of the layer assemblies are summarized in table 4.
Table 4:
Figure imgf000092_0002
:) not measurable, because G3 was less then O.l O after storage The results given in table 3 clearly show, that the materials of the present invention, containing emulsions with a high iridium content exhibit a better storage stability, that is especially pronounced for supports that contain additives like plastizisers.
EXAMPLE 10
Layer assembly 200 consisted only of support A.
IMAGE QUALITY AND DEFORMATION TEST
Layer assemblies 111 to 113, 121 to 123 and 131 to 133 were digitally exposed as described above with an image comprising black characters of varying size (height 3 mm to 10 mm) and chemical processed as described for EXAMPLES 1 to 9.
On layer assembly 200 an image comprising black characters of varying size (height 3 mm to 10 mm) was produced by conventional offset printing. A transparent PVC sheet of 80 μm precoated on one side with a polyethylene sheet 75 μm thick was laid onto the thus prepared image and laminated with the polyethylene in contact with the topcoat of the image layer of layer assemblies 111 to 113, 121 to 123, 131 to 133 and 200. A roller laminator was used for pressing together the superposed materials at a temperature of 104°C measured within the sandwich.
After lamination the following deformation test was applied to layer assemblies 111 to 113, 121 to 123, 131 to 133 and 200. A membrane press was used to press the photographic material onto a work-piece that was pretreated with a wood glue and the test was run at a temperature of 95°C. The work-piece in the form of a drawer-front was made of chip-wood and had grooves in the form of half-pipes on its front, the half-pipes having a diameter of 0.8 cm. On deformation, the photographic material lying over the halfpipes is pressed in the halfpipe and thereby stretched. The material is also stretched at the front edges and corners of the work-piece. At the back-side of the work-piece, overhanging material is cut off. The test pieces were evaluated qualitatively with the following results: DEFORMATION RESULTS
Layer assemblies 111 to 113, 131 to 133 and 200 could easily be deformed and exhibited neither cracks nor micro-cracks . Layer assemblies 121 to 123 could be deformed, but needed longer then the layer assemblies mentioned before; they exhibited neither cracks nor micro-cracks .
IMAGE QUALITY RESULTS
The image quality was evaluated with the naked eye by looking at the black characters in the deformed part of the test pieces . Layer assemblies 111 to 113 and 131 to 133 showed no loss in image quality at the deformed parts . Layer assemblies 121 to 123 showed minor losses in image quality that were barely visible as a small loss in density (dark grey instead of black) of the characters in the deformed parts. Layer assembly 200 showed a significant loss in image quality in form of a clearly visible brightening of the characters in the deformed parts . Along the edges and corners grey and even white lines appear within the characters.
From the test results it is evident, that PVC and PC are preferred supports for the photographic material of the present invention, PVC containing no plastizisers being particularly preferred. The advantage of PVC is it's ease of deformation and thereby enabling a very smooth deformation that does not at all adversely effect the image quality of the deformed image. The offset printed material (layer assembly 200) gave a poor image quality upon deformation and cannot be used according to the present invention.
The present invention may include any feature or combination of features disclosed herein either implicitly or explicitly or any generalisation thereof irrespective of whether it relates to the presently claimed invention. In view of the foregoing description it will be evident to a person skilled in the art that various modifications may be made within the scope of the invention.

Claims

1. A deformable colour photographic silver halide material, said colour photographic silver halide material comprising on a deformable plastic support at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one red- sensitive silver halide emulsion layer containing at least one cyan coupler, wherein the silver halide emulsions have an overall silver chloride content of at least 95 mol% and at least one silver halide emulsion contains silver halide crystals that are doped with 10 to 700 nmol iridium.
2 . Material according to claim 1, wherein at least one silver halide emulsion contains silver halide crystals that are doped with 10 to 500 nmol iridium.
3. Material according to claim 2, wherein the silver halide emulsions have an overall silver chloride content of at least
98 mol%.
4. Material according to claim 1, wherein the silver halide crystals of at least one silver halide emulsion contains structured crystals with at least two different zones, the outermost zone having a higher molar content of silver bromide than the rest of the crystal.
5. Material according to claim 1, wherein said support is provided with a subbing layer comprising 1.3 to 80% by weight of a proteinaceous colloid, 0 to 85% by weight of colloidal silica and 0 to 30% by weight of a siloxane, which can form a reaction product with said colloidal silica.
6. Material according to claim 5, wherein said subbing layer is provided on the same side of said support as the silver halide emulsion layers.
7. Material according to claim 1, wherein said green-sensitive silver halide emulsion layer and/or said red-sensitive silver halide emulsion layer contain a silver halide emulsion with silver halide crystals having an average grain size of at least 0.4 μm.
8. Material according to claim 1, wherein said silver halide emulsion layers contain one or more binders.
9. Material according to claim 8, wherein said binders in said silver halide emulsion layers are at least 80% by weight gelatin.
10. Material according to claim 1, wherein said colour photographic material contains at least one light-sensitive layer containing a compound represented by formula (XII) :
Figure imgf000096_0001
52 53 in which R represents H, CH3 or OCH3; R represents H, OH, CH
3.
*ϊ-l Ϊ4 "S-l
0CH3, NHCO-R , COOR , S02NH2 , NHC0NH2 or NHCONH-CH3; and R represents Cι~C -Alkyl.
11. Material according to claim 1, wherein said blue-sensitive silver halide emulsion layer contains a blue sensitizer represented by formula (IX) :
Figure imgf000096_0002
wherein X1 and X2 independently represent S or Se, R31 to R36 independently represent hydrogen, halogen or an alkyl-, alkoxy, aryl or hetero-aryl group or R31 and R32; R32 and R33; R34 and R35; R35 and R36 together represent the atoms necessary to form an anellated benzo-, naphtho- or heterocyclic ring, R37 and R38 independently represent an alkyl-, sulfoalkyl-, carboxyalkyl,- (CH2)1S02R39S02-alkyl, - (CH2) 1S02R39CO-alkyl, - (CH2) 1COR39S02- alkyl or - (CH2)1-C0R39C0-alkyl group, R39 represents -N~- or - NH-, 1 is a whole number between 1 and 6 and M is an optional counter-ion providing charge compensation.
5
12. Material according to claim 1, wherein said deformable plastic support is a polycarbonate, poly (vinylchloride) , vinylchloride copolymer or a polyester; or a copolyester based on PET.
10 13. Material according to claim 1, wherein the outermost layer on the image side of said colour photographic material is provided with a protective foil.
14. A process for producing a deformed image comprising the steps 15 of: exposing the colour photographic silver halide material according to claim 1; conventionally processing said exposed colour photographic material to produce an image; and deforming said colour photographic material.
20 15. Process according to claim 14, wherein said deforming step comprises the application of heat and pressure and wherein at least part of the material is elongated.
16. Process according to claim 14, wherein said deforming step 25 comprises deforming said deformable colour photographic material in contact with a work piece.
17. Process according to claim 14, wherein said deformable colour photographic silver halide material is provided with a
30 protective foil before deforming said colour photographic material with a work piece.
18. Process according to claim 14, wherein said deforming step comprises deforming said colour photographic material by
35 vacuum deformation.
19. Process according to claim 14, wherein said deforming step comprises deforming said colour photographic material by injection moulding.
PCT/EP2003/050819 2002-11-15 2003-11-12 Deformable colour photographic silver halide material. Ceased WO2004046825A1 (en)

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AU2003298283A AU2003298283A1 (en) 2002-11-15 2003-11-12 Deformable colour photographic silver halide material.

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB739477A (en) * 1953-06-16 1955-10-26 Du Pont Photographic silver halide films
EP0490416A1 (en) * 1990-11-30 1992-06-17 Agfa-Gevaert N.V. Image-receiving material comprising subbed polycarbonate or polypropylene
JPH0545799A (en) * 1991-08-19 1993-02-26 Fuji Photo Film Co Ltd Photographic film product and image forming method
GB2321977A (en) * 1997-02-10 1998-08-12 Andrew Cunnigham Thomson Moudable photographic material
EP1089125A1 (en) * 1999-09-30 2001-04-04 Eastman Kodak Company Flexible silver halide packaging material
DE10055094A1 (en) * 2000-11-07 2002-05-29 Agfa Gevaert Ag Silver halide material used in digital film, comprises silver halide emulsions containing a magenta, a cyan and a yellow coupler, and a light-sensitive silver halide layer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB739477A (en) * 1953-06-16 1955-10-26 Du Pont Photographic silver halide films
EP0490416A1 (en) * 1990-11-30 1992-06-17 Agfa-Gevaert N.V. Image-receiving material comprising subbed polycarbonate or polypropylene
JPH0545799A (en) * 1991-08-19 1993-02-26 Fuji Photo Film Co Ltd Photographic film product and image forming method
GB2321977A (en) * 1997-02-10 1998-08-12 Andrew Cunnigham Thomson Moudable photographic material
EP1089125A1 (en) * 1999-09-30 2001-04-04 Eastman Kodak Company Flexible silver halide packaging material
DE10055094A1 (en) * 2000-11-07 2002-05-29 Agfa Gevaert Ag Silver halide material used in digital film, comprises silver halide emulsions containing a magenta, a cyan and a yellow coupler, and a light-sensitive silver halide layer

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