US2061230A - Manufacture of gelatin reliefs for printing - Google Patents
Manufacture of gelatin reliefs for printing Download PDFInfo
- Publication number
- US2061230A US2061230A US740500A US74050034A US2061230A US 2061230 A US2061230 A US 2061230A US 740500 A US740500 A US 740500A US 74050034 A US74050034 A US 74050034A US 2061230 A US2061230 A US 2061230A
- Authority
- US
- United States
- Prior art keywords
- emulsion
- gelatin
- silver halide
- layer
- printing
- 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.)
- Expired - Lifetime
Links
- 108010010803 Gelatin Proteins 0.000 title description 22
- 229920000159 gelatin Polymers 0.000 title description 22
- 239000008273 gelatin Substances 0.000 title description 22
- 235000019322 gelatine Nutrition 0.000 title description 22
- 235000011852 gelatine desserts Nutrition 0.000 title description 22
- 238000004519 manufacturing process Methods 0.000 title description 11
- 239000000839 emulsion Substances 0.000 description 41
- 239000004332 silver Substances 0.000 description 33
- 229910052709 silver Inorganic materials 0.000 description 33
- -1 silver halide Chemical class 0.000 description 25
- 239000000126 substance Substances 0.000 description 21
- 239000007787 solid Substances 0.000 description 12
- 239000000049 pigment Substances 0.000 description 10
- 230000003595 spectral effect Effects 0.000 description 10
- 230000000295 complement effect Effects 0.000 description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 230000035945 sensitivity Effects 0.000 description 8
- 238000005530 etching Methods 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 6
- 238000005266 casting Methods 0.000 description 6
- 239000000975 dye Substances 0.000 description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001235 sensitizing effect Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- QTSNFLIDNYOATQ-UHFFFAOYSA-N 2-[(4-chloro-2-nitrophenyl)diazenyl]-n-(2-chlorophenyl)-3-oxobutanamide Chemical compound C=1C=CC=C(Cl)C=1NC(=O)C(C(=O)C)N=NC1=CC=C(Cl)C=C1[N+]([O-])=O QTSNFLIDNYOATQ-UHFFFAOYSA-N 0.000 description 1
- AVERNFJXXRIVQN-XSDYUOFFSA-N 5-[(4-ethoxyphenyl)diazenyl]-2-[(e)-2-[4-[(4-ethoxyphenyl)diazenyl]-2-sulfophenyl]ethenyl]benzenesulfonic acid Chemical compound C1=CC(OCC)=CC=C1N=NC(C=C1S(O)(=O)=O)=CC=C1\C=C\C1=CC=C(N=NC=2C=CC(OCC)=CC=2)C=C1S(O)(=O)=O AVERNFJXXRIVQN-XSDYUOFFSA-N 0.000 description 1
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- 229920002160 Celluloid Polymers 0.000 description 1
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 1
- AUNGANRZJHBGPY-SCRDCRAPSA-N Riboflavin Chemical compound OC[C@@H](O)[C@@H](O)[C@@H](O)CN1C=2C=C(C)C(C)=CC=2N=C2C1=NC(=O)NC2=O AUNGANRZJHBGPY-SCRDCRAPSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- BGLGAKMTYHWWKW-UHFFFAOYSA-N acridine yellow Chemical compound [H+].[Cl-].CC1=C(N)C=C2N=C(C=C(C(C)=C3)N)C3=CC2=C1 BGLGAKMTYHWWKW-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229940097275 indigo Drugs 0.000 description 1
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 1
- 239000006233 lamp black Substances 0.000 description 1
- QDLAGTHXVHQKRE-UHFFFAOYSA-N lichenxanthone Natural products COC1=CC(O)=C2C(=O)C3=C(C)C=C(OC)C=C3OC2=C1 QDLAGTHXVHQKRE-UHFFFAOYSA-N 0.000 description 1
- VLAPMBHFAWRUQP-UHFFFAOYSA-L molybdic acid Chemical compound O[Mo](O)(=O)=O VLAPMBHFAWRUQP-UHFFFAOYSA-L 0.000 description 1
- CTIQLGJVGNGFEW-UHFFFAOYSA-L naphthol yellow S Chemical compound [Na+].[Na+].C1=C(S([O-])(=O)=O)C=C2C([O-])=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 CTIQLGJVGNGFEW-UHFFFAOYSA-L 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical compound C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 1
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/22—Subtractive cinematographic processes; Materials therefor; Preparing or processing such materials
- G03C7/25—Dye-imbibition processes; Materials therefor; Preparing or processing such materials
Definitions
- Our present invention relates to the manufacture of gelatinl reliefs for printing.
- gelatin etched reliefs which are suitable for multiplication after the manner of the pinatype process which uses swollen reliefs, and are distinguished particularly by good reproduction of the half-tones. Further objects will be seen from the detailed specification following hereafter.
- the reliefs are produced in a silver halide gelatin layer, which is dyed complementarily to its spectral sensitivity, and contains in uniform, ne dispersion a solid substance having vno inuence on the silver halide.
- a silver halide gelatin layer which is dyed complementarily to its spectral sensitivity, and contains in uniform, ne dispersion a solid substance having vno inuence on the silver halide.
- any known and suitable water-resisting material for example, Celluloid, cellulose acetate, varnished cellophane, polyvinyl-chloride, polyacrylic acid ester, and the like.
- gelatin layers constituted as above described there is produced in any con-- venient manner (by copying direct photography in the camera) a latent image; this is developed by the usual process without tanning, and then a positive relief is produced by etching with a solution of hydrogen peroxide, ammonium persulfate, or another peroxide.
- the presence of the nely dispersed solid substance involves the advantage that the positive gelatin relief obtained by the etching process also reproduces the finest detalls of th'e developed silver image. Without the solid substance which serves as a filling in the layer, the parts of the picture of soft tone or slight area are often too extensively attacked. i'
- the layers serving for the production of the etched relief may contain either white or colorless pigments as solid substances and also soluble dyestuis for producing the desiredcoloration of the layer, or apsuitable colored, very nely dispersed pigment can at the same time serve the purpose of a filling and also color the layer.
- blue-sensitive 'emulsion layers can be colored with naphthol yellow S (Schultz, Farbstoitabellen 7th edition No, 19)',
- acridine yellow G (Schultz, Farbstoiltabeilen '7th edition No. 901) or chrysophenine G (Schultz, Farbstotltabellen '7th edition No. '726) and greensensitive emulsion layers can be colored with benzo-light red 8 BL (Schultz, Farbstoflabellen 5 '7th edition No. 566), whereas barium sulfate, aluminium oxide, silica or other white or colorless pigments that do not inuence the silver halide in very iine state of dispersion, can be used as solid substances.
- the additional substances may 10 be prepared separately and incorporated subsequently in the emulsion when ready for casting or may be precipitated in the solution when it is prepared.
- pigments must be selected which are completely insoluble in water and insensitive to weak acids and alkalies that is to say they are insoluble in the photographic treating baths, because even the slightest traces of dissolved pigment would seriouslyendanger the sensitivity of the light sensitive layer. All pigments that fulll these requirements and have the necessary optical properties are suitable for the present process.
- sparingly soluble lakes of organic dyestuffs complex salts from basic triphenyl methane dyestuffs or xanthene dyestuils with phosphoric acid, molybdic acid or tungstic acid (fanal dyes of the I. G.
- a blue-sensitive silver halide emulsion layer can be colored, for example, with very finely dispersed Hansa-yellow 10 G (Schultz, Farbstoiftabellen '7th edition No. 84) )or fanal lake of citro- 35 flavin 8 G (Schultz, Farbstoitabellen 7th edition No.'934).
- Very iinely dispersed indigo BASF/G Schoultz, Farbstoitabellen, 7th edition No. 1320
- suitable reliefs can be obtained by the addition of very finely dispersed lampblack.
- the colored pigments it is, of course, also possible it necessary, to incorporate colorless lilling substances.
- the pigments are dispersed until they consist mainly of particles having a diameter not exceeding 1p, in, whlch condi- 50 i tion-they produce a homogeneous' ori-'quasi homogeneous coloring of the emulsion layer which when fixed i3 clearly transpaent and also, when magnetted 400 to 500 times under the microscope, i
- 'Ihe thickness of the emulsion layer in consideration lof the printing capacity, should not be too great. Layers of not more than 1.0; thickness are particularly suitable.
- etching is carried out with solutions of hydrogen peroxide, ammonium persulfate or other peroxide.
- solutions of hydrogen peroxide, ammonium persulfate or other peroxide for the production of an optional number of pictures the etched reliefs produced in the described manner are caused to imbibe the color solutions and the reliefs thus colored are impressed o n wet gelatin paper.
- all aqueous dyestui solutions are suitable which are accepted by the reliefs and can easily be transferred to the gelatin surfaces to be printed.
- the single :figure of the accompanying drawing shows a nlm consisting of a support to which there has been attached a silver halide gelatin emulsion layer containing a finely distributed colorless substance which does not affect the silver halide gelatin emulsion layer and a dye of a color complementary to that to which the silver halation layer is sensitive.
- a manufacture of gelatin reliefs for printing which comprises incorporating in a silver halide gelatin emulsion, a finely dispersed solid substance of ywhich the main part has a particle diameter not exceeding ly. which substance does not inuence the silver halide and is insoluble in the fuotographic treating baths, sensitizing said silver halide emulsion, sensitizing said emulsion layer for a spectral region ydifferent from its initial sensitivity.
- a process of manufacturing a gelatin relief for printing which comprises incorporating in a to that to which said emulsion has been sen' sitized, ⁇ casting said emulsion on a support to form a layer, producing a latent image in said emulsion, developing said image to a silver picture and etching said emulsion layer to form a relief.
- a process of manufacturing a gelatin relief for printing which comprises incorporating in said silver halide gelatin emulsion a nely dispersed solid substance of which the main part has a particle diameter not exceeding la which substance does not iniiuence the silver halide, has a color complementary to that for which said emulsion is sensitized and is insoluble in the photographic treating baths, sensitizin'g said silver halide emulsion to a color complementary to that of said solid substance, casting said emulsion on a support to form a layer, producing a latent image in said emulsion. developing said image to a silver picture and etching said emulsion layer to form a relief.
- a photographic material which comprises a support and attached to said support a silver halide gelatin emulsion layer containing a finely dispersed solid substance having a particle diameter not exceeding la which substance does n ot affect the silver halide and which is insoluble in photographic'treating baths, said silver halide emulsion being sensitized for a spectral region different from that of its initial sensitiveness to blue, and containing a dye of a color complementary to that of the spectral sensitivity.
- a photographic material which comprises a y support and attached to said support a silver halide'gelatin emulsion layer containing a finely dispersed solid substance having a particle diameter not exceeding la which substance does not affect the silver halide and which is insoluble in photographic treating baths, ⁇ said silver halide emulsion being sensitized for a spectral region different from that of its initial sensitiveness to blue, and containing a soluble dye of a color complementary to that ofthe spectral sensitivity.
- a photographic material ⁇ which comprises a vsupport and attached to said support a silver halideJ gelatin emulsion layer sensitized for a spectral region different from its initialfensitivity to blue and containing a finely /dispersed solid substance of va color complementary to that of th spectral sensitivity of said layer and having av partial diameter not exceeding 1;
- a process of manufacturing a gelatin relief for printing which comprises incorporating in a silver halide gelatin emulsion a nely dispersed vcompound selected from the group consisting of barium sulfate, aluminium oxide and silica of which the main part has a particle diameter not exceeding la, sensitizing said silver halide emulsion to a spectral region different from its initial sensitivity, dyeing said silver halide emulsion with a'soluble dye in a color complementary to that to which said-emulsion has been sensitized, casting said emulsion on a support to form a layer, producing a latent image in said emulsion, developing said image to a silver picture and etching said emulsion layer to form a relief.
- a nely dispersed vcompound selected from the group consisting of barium sulfate, aluminium oxide and silica of which the main part has a particle diameter not exceeding la
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Materials For Photolithography (AREA)
- Printing Plates And Materials Therefor (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Description
NOV- 17, 1936 w. FRANKENBURGER Er AL n 2,061,231?
MANUFACTURE 0F GELATIN RELIEFS F OR PRINTING Filed Aug. 18, 1934 7//////////////////////////l/////l/l//l///l/////////////////[ Patented Nov. 17, 1936 MANUFACTURE F GELATIN BELIEFS FOR. PRINTING Walter Frankenburger and Georg Rssler, Ludwgshafen-on-the-Rhine, Germany, assignors to I. G. Farbenindustrie Aktiengesellschaft,v Frankfort-on-the-Main, Germany Application August is', 1934, serial No. 740,500
Germany August 19, 1933 7 Claims. l (Cl. S35-5.6)
Our present invention relates to the manufacture of gelatinl reliefs for printing.
One of its objects is an improved process of manufacturing gelatin etched reliefs, which are suitable for multiplication after the manner of the pinatype process which uses swollen reliefs, and are distinguished particularly by good reproduction of the half-tones. Further objects will be seen from the detailed specification following hereafter.
The reliefs are produced in a silver halide gelatin layer, which is dyed complementarily to its spectral sensitivity, and contains in uniform, ne dispersion a solid substance having vno inuence on the silver halide. For the support of the said layer there may be used any known and suitable water-resisting material, for example, Celluloid, cellulose acetate, varnished cellophane, polyvinyl-chloride, polyacrylic acid ester, and the like.
In the silver halide gelatin layers constituted as above described there is produced in any con-- venient manner (by copying direct photography in the camera) a latent image; this is developed by the usual process without tanning, and then a positive relief is produced by etching with a solution of hydrogen peroxide, ammonium persulfate, or another peroxide.
Owing to the fact that the silver halide gelatin layers are dyed complementarily to their spectral sensitivity in each particular case, there is obtained a satisfactory gradation of the silver image4 and of the etched relief obtained therefrom. The ,various tonal values fof the original copy or of the object photographed are well reproduced, whereas 'if the complementary .coloring is not used thegradation obtained is much too steep.
The presence of the nely dispersed solid substance involves the advantage that the positive gelatin relief obtained by the etching process also reproduces the finest detalls of th'e developed silver image. Without the solid substance which serves as a filling in the layer, the parts of the picture of soft tone or slight area are often too extensively attacked. i'
The layers serving for the production of the etched relief may contain either white or colorless pigments as solid substances and also soluble dyestuis for producing the desiredcoloration of the layer, or apsuitable colored, very nely dispersed pigment can at the same time serve the purpose of a filling and also color the layer. In the first case, for example, blue-sensitive 'emulsion layers can be colored with naphthol yellow S (Schultz, Farbstoitabellen 7th edition No, 19)',
acridine yellow G (Schultz, Farbstoiltabeilen '7th edition No. 901) or chrysophenine G (Schultz, Farbstotltabellen '7th edition No. '726) and greensensitive emulsion layers can be colored with benzo-light red 8 BL (Schultz, Farbstoflabellen 5 '7th edition No. 566), whereas barium sulfate, aluminium oxide, silica or other white or colorless pigments that do not inuence the silver halide in very iine state of dispersion, can be used as solid substances. The additional substances may 10 be prepared separately and incorporated subsequently in the emulsion when ready for casting or may be precipitated in the solution when it is prepared.
If it is desired to color and ll the layer by means of a single substance, pigments must be selected which are completely insoluble in water and insensitive to weak acids and alkalies that is to say they are insoluble in the photographic treating baths, because even the slightest traces of dissolved pigment would seriouslyendanger the sensitivity of the light sensitive layer. All pigments that fulll these requirements and have the necessary optical properties are suitable for the present process. There may be named for example, sparingly soluble lakes of organic dyestuffs, complex salts from basic triphenyl methane dyestuffs or xanthene dyestuils with phosphoric acid, molybdic acid or tungstic acid (fanal dyes of the I. G. Farbenindus'trie Aktiengesell- 30 schaft, Frankfort-on-the-Main) A blue-sensitive silver halide emulsion layer can be colored, for example, with very finely dispersed Hansa-yellow 10 G (Schultz, Farbstoiftabellen '7th edition No. 84) )or fanal lake of citro- 35 flavin 8 G (Schultz, Farbstoitabellen 7th edition No.'934). Very iinely dispersed indigo BASF/G (Schultz, Farbstoitabellen, 7th edition No. 1320) as colored dyestuff, is inter alia verysuitable for red-sensitive emulsions. With panchromatic emulsion-layers, suitable reliefs can be obtained by the addition of very finely dispersed lampblack. Besides the colored pigments it is, of course, also possible it necessary, to incorporate colorless lilling substances. i
By mechanical comminuticn or by the addition of suitable wetting agents the pigments are dispersed until they consist mainly of particles having a diameter not exceeding 1p, in, whlch condi- 50 i tion-they produce a homogeneous' ori-'quasi homogeneous coloring of the emulsion layer which when fixed i3 clearly transpaent and also, when magniiled 400 to 500 times under the microscope, i
shows no grain. With this dispersion of the pig-A 55 ment the greatest part of it consists of particles having a diameter of less than 1u. A distribution curve of the number of particles of certain grain sizes contained in one of the pigments gave the following results: up to 0.3M 40%, up to 0.5/r 67%, and up to 0.7;'. 85%. The proportion of solid substance added may be varied within wide limits according to the kind of pigment selected. For example, additions of 5 to 20 per cent by vweight of barium sulfate, calculated on the dry emulsion (corresponding with 0.5 to 2 per cent by weight calculated on the wet emulsion when ready for casting) yield good results.'
'Ihe thickness of the emulsion layer, in consideration lof the printing capacity, should not be too great. Layers of not more than 1.0; thickness are particularly suitable.
'I'he etching is carried out with solutions of hydrogen peroxide, ammonium persulfate or other peroxide. For the production of an optional number of pictures the etched reliefs produced in the described manner are caused to imbibe the color solutions and the reliefs thus colored are impressed o n wet gelatin paper. For this purpose all aqueous dyestui solutions are suitable which are accepted by the reliefs and can easily be transferred to the gelatin surfaces to be printed.
The single :figure of the accompanying drawing shows a nlm consisting of a support to which there has been attached a silver halide gelatin emulsion layer containing a finely distributed colorless substance which does not affect the silver halide gelatin emulsion layer and a dye of a color complementary to that to which the silver halation layer is sensitive.
Whatv we claim is:
l. A manufacture of gelatin reliefs for printing which comprises incorporating in a silver halide gelatin emulsion, a finely dispersed solid substance of ywhich the main part has a particle diameter not exceeding ly. which substance does not inuence the silver halide and is insoluble in the fuotographic treating baths, sensitizing said silver halide emulsion, sensitizing said emulsion layer for a spectral region ydifferent from its initial sensitivity. dyeing said silver halide emulsion in a color complementary to that to which said emulsion has been sensitized casting said emulsion on a support to form a layer, producing a latent image in said emulsion, developing said image to a silver picture and etching said emulsion layerito form a relief.
2. A process of manufacturing a gelatin relief for printing which comprises incorporating in a to that to which said emulsion has been sen' sitized,` casting said emulsion on a support to form a layer, producing a latent image in said emulsion, developing said image to a silver picture and etching said emulsion layer to form a relief.
3. A process of manufacturing a gelatin relief for printing which comprises incorporating in said silver halide gelatin emulsion a nely dispersed solid substance of which the main part has a particle diameter not exceeding la which substance does not iniiuence the silver halide, has a color complementary to that for which said emulsion is sensitized and is insoluble in the photographic treating baths, sensitizin'g said silver halide emulsion to a color complementary to that of said solid substance, casting said emulsion on a support to form a layer, producing a latent image in said emulsion. developing said image to a silver picture and etching said emulsion layer to form a relief.
4. A photographic material which comprises a support and attached to said support a silver halide gelatin emulsion layer containing a finely dispersed solid substance having a particle diameter not exceeding la which substance does n ot affect the silver halide and which is insoluble in photographic'treating baths, said silver halide emulsion being sensitized for a spectral region different from that of its initial sensitiveness to blue, and containing a dye of a color complementary to that of the spectral sensitivity. i
5. A photographic material which comprises a y support and attached to said support a silver halide'gelatin emulsion layer containing a finely dispersed solid substance having a particle diameter not exceeding la which substance does not affect the silver halide and which is insoluble in photographic treating baths, `said silver halide emulsion being sensitized for a spectral region different from that of its initial sensitiveness to blue, and containing a soluble dye of a color complementary to that ofthe spectral sensitivity.
6. A photographic material` which comprises a vsupport and attached to said support a silver halideJ gelatin emulsion layer sensitized for a spectral region different from its initialfensitivity to blue and containing a finely /dispersed solid substance of va color complementary to that of th spectral sensitivity of said layer and having av partial diameter not exceeding 1;
which substance does not affect the silver halide and which is insoluble in the photographic treating baths.
' 7. A process of manufacturing a gelatin relief for printing which comprises incorporating in a silver halide gelatin emulsion a nely dispersed vcompound selected from the group consisting of barium sulfate, aluminium oxide and silica of which the main part has a particle diameter not exceeding la, sensitizing said silver halide emulsion to a spectral region different from its initial sensitivity, dyeing said silver halide emulsion with a'soluble dye in a color complementary to that to which said-emulsion has been sensitized, casting said emulsion on a support to form a layer, producing a latent image in said emulsion, developing said image to a silver picture and etching said emulsion layer to form a relief.
WALTER FRANKENBURGER.
GEORG RssLER.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2061230X | 1933-08-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2061230A true US2061230A (en) | 1936-11-17 |
Family
ID=7983098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US740500A Expired - Lifetime US2061230A (en) | 1933-08-19 | 1934-08-18 | Manufacture of gelatin reliefs for printing |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2061230A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2693145A (en) * | 1948-03-09 | 1954-11-02 | Dick Co Ab | Lithographic printing plate and method of making |
| US2716060A (en) * | 1950-07-07 | 1955-08-23 | Direct Reproduction Corp | Contact printing emulsion and method of making |
| US2914404A (en) * | 1953-07-31 | 1959-11-24 | Blaupunkt Werke Gmbh | Method of producing two-dimensional circuits or circuit elements on supporting bases |
| US3067034A (en) * | 1957-01-22 | 1962-12-04 | Clifford P Chapman | Photographic method for producing silhouette images |
-
1934
- 1934-08-18 US US740500A patent/US2061230A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2693145A (en) * | 1948-03-09 | 1954-11-02 | Dick Co Ab | Lithographic printing plate and method of making |
| US2716060A (en) * | 1950-07-07 | 1955-08-23 | Direct Reproduction Corp | Contact printing emulsion and method of making |
| US2914404A (en) * | 1953-07-31 | 1959-11-24 | Blaupunkt Werke Gmbh | Method of producing two-dimensional circuits or circuit elements on supporting bases |
| US3067034A (en) * | 1957-01-22 | 1962-12-04 | Clifford P Chapman | Photographic method for producing silhouette images |
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