WO2011013601A1 - フレキソ印刷原版 - Google Patents
フレキソ印刷原版 Download PDFInfo
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- WO2011013601A1 WO2011013601A1 PCT/JP2010/062493 JP2010062493W WO2011013601A1 WO 2011013601 A1 WO2011013601 A1 WO 2011013601A1 JP 2010062493 W JP2010062493 W JP 2010062493W WO 2011013601 A1 WO2011013601 A1 WO 2011013601A1
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- WIPO (PCT)
- Prior art keywords
- plate
- latex
- water
- plasticizer
- weight
- 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.)
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2014—Contact or film exposure of light sensitive plates such as lithographic plates or circuit boards, e.g. in a vacuum frame
- G03F7/2016—Contact mask being integral part of the photosensitive element and subject to destructive removal during post-exposure processing
- G03F7/202—Masking pattern being obtained by thermal means, e.g. laser ablation
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/092—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers characterised by backside coating or layers, by lubricating-slip layers or means, by oxygen barrier layers or by stripping-release layers or means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/14—Production or use of a mask
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
Definitions
- the present invention relates to a flexographic printing plate used for producing a flexographic printing plate by computer plate making technology, and more particularly to a flexographic printing plate that gives a printing plate free from defects on the printing plate due to wrinkles or lasers.
- CTP technology Computer to Plate, CTP technology
- digital image forming technology is a method for obtaining a relief uneven pattern by directly outputting information processed on a computer onto a printing plate. This technology eliminates the need for a negative film manufacturing process and reduces costs and the time required to create the negative.
- Patent Document 1 proposes a method of forming an image mask by providing an infrared sensitive layer opaque to actinic radiation on a photosensitive resin layer and evaporating the infrared sensitive layer with an infrared laser.
- This photosensitive printing original plate is composed of a photosensitive resin layer, a protective layer, and an infrared-sensitive layer.
- the protective layer is sensitive to mass transfer between the photosensitive resin layer and the infrared-sensitive layer, and to oxygen due to oxygen in the atmosphere. It has a function to prevent polymerization inhibition of the resin layer.
- a photosensitive resin layer that can be developed with an aqueous solution is strongly required from the viewpoint of environmental impact and workability.
- a flexographic photosensitive resin layer that can be developed with water one made of a synthetic rubber and a hydrophilic polymer is marketed (see Patent Document 2).
- a water-development plate with higher resolution has been developed by using latex that exists in the form of fine particles as a main component (see Patent Document 3).
- the heat resistance of the protective layer is reduced by adding a large amount of plasticizer, and the protective layer is damaged by the heat during laser ablation, such as dents, scanning lines, etc. There is a tendency for printing plate abnormalities to occur.
- the water-developable CTP plate in particular, the water-developable CTP plate mainly composed of latex, a completely satisfactory plate has not been obtained.
- the present invention has been developed in view of the current state of the prior art, and an object thereof is to provide a flexographic printing original plate which is a flexible water-development plate and has no plate surface abnormality due to wrinkles or laser on the plate surface. .
- the plasticizer is a polyether polyol compound, and the plasticizer has three or more hydroxyl groups in one molecule and has a molecular weight of 200 or more.
- the flexographic printing plate precursor of the present invention contains (A) polyvinyl alcohol, (B) plasticizer, and (C) water-dispersed latex in a certain ratio in the protective layer, it can prevent oxygen polymerization inhibition of the photosensitive layer, In addition, there is no wrinkle on the plate surface, and it is resistant to heat generated by ablation of the heat-sensitive mask layer. For this reason, although it is a flexible water developing plate, an excellent printing plate free from plate surface abnormalities such as plate surface wrinkles, laser dents, and scanning stripes can be provided.
- the flexographic printing original plate of the present invention has a structure in which at least (P) a support, (Q) a photosensitive resin layer, (R) a protective layer, and (S) a thermal mask layer are sequentially laminated.
- the (P) support used in the original plate of the present invention is flexible but is preferably a material excellent in dimensional stability.
- a metal support such as steel, aluminum, copper, nickel, etc.
- polyethylene terephthalate film
- a thermoplastic resin support such as a polyethylene naphthalate film, a polybutylene terephthalate film, or a polycarbonate film.
- a polyethylene terephthalate film having excellent dimensional stability and sufficiently high viscoelasticity is particularly preferable.
- the thickness of the support is preferably from 50 to 350 ⁇ m, and preferably from 100 to 250 ⁇ m, from the standpoint of mechanical properties, shape stabilization, or handleability during plate making.
- the (Q) photosensitive resin layer used in the original plate of the present invention comprises a synthetic polymer compound, a photopolymerizable unsaturated compound, and essential components of a photopolymerization initiator, a plasticizer, a thermal polymerization inhibitor, a dye, and a pigment. It is preferable that it is comprised from arbitrary additives, such as a ultraviolet absorber, a fragrance
- the photosensitive resin layer must be developable with an aqueous developer.
- the synthetic polymer compound that can be developed with water latex is preferably used. Although the water-developable photosensitive resin layer is generally flexible, the use of latex inevitably makes the printing plate very flexible. When latex is not used, for example, those described in JP-A-3-198058 can be used.
- the latex usable in the (Q) photosensitive resin layer of the present invention includes polybutadiene latex, natural rubber latex, styrene-butadiene copolymer latex, acrylonitrile-butadiene copolymer latex, polychloroprene latex, polyisoprene latex, polyurethane.
- Water-dispersed latex polymers such as latex, methyl methacrylate-butadiene copolymer latex, vinyl pyridine polymer latex, butyl polymer latex, thiocol polymer latex, acrylate polymer latex, and polymers such as acrylic acid and methacrylic acid. Examples include polymers obtained by copolymerizing other components.
- an aqueous dispersion latex polymer containing a butadiene skeleton or an isoprene skeleton in the molecular chain is preferably used from the viewpoint of hardness and rubber elasticity.
- polybutadiene latex, styrene-butadiene copolymer latex, acrylonitrile-butadiene copolymer latex, methyl methacrylate-butadiene copolymer latex, and polyisoprene latex are preferable. Latex needs to be confirmed as independent fine particles.
- the (R) protective layer used in the original plate of the present invention is provided in order to prevent polymerization inhibition due to oxygen in the (Q) photosensitive resin layer.
- the (R) protective layer contains at least three components of (A) polyvinyl alcohol, (B) plasticizer, and (C) water-dispersed latex in the following proportions.
- (A) Polyvinyl alcohol is used to impart oxygen barrier properties to the (R) protective layer.
- the blending amount of polyvinyl alcohol is 25 to 80 parts by weight. Preferably, the amount is 35 to 70 parts by weight. If it is less than 25 parts by weight, (R) the oxygen barrier property of the protective layer is insufficient, and (Q) the surface of the photosensitive resin layer is roughened by oxygen inhibition. On the other hand, when it exceeds 80 parts by weight, the elastic modulus of the (R) protective layer is increased and wrinkles are generated on the plate surface.
- any polyvinyl alcohol having a saponification degree of 50% or more can be used.
- the preferred saponification degree of polyvinyl alcohol is 60% to 90%. If the degree of saponification is less than 60%, the oxygen barrier property of the (R) protective layer is insufficient. On the other hand, if it is 90% or more, the elastic modulus of the (R) protective layer becomes high and plate surface wrinkles easily occur.
- modified products such as carboxyl group-modified polyvinyl alcohol and silane-modified polyvinyl alcohol can also be used.
- the plasticizer is blended in order to lower the elastic modulus of the (R) protective layer and prevent wrinkling of the printing plate.
- the wrinkles are generated when the (R) protective layer that has been stretched by wrapping around the drum is sunk into the (Q) photosensitive resin layer when the (R) protective layer is returned to the flat surface. Since the surface of the photosensitive resin layer of the water development plate is very flexible, wrinkles are particularly likely to occur.
- R By reducing the elastic modulus of the protective layer, the penetration into the photosensitive resin can be reduced, and the generation of wrinkles can be suppressed.
- the compounding amount of the plasticizer is 15 to 60 parts by weight, preferably 20 to 50 parts by weight.
- the blending amount is less than 15 parts by weight, the decrease in the elastic modulus of the (R) protective layer is insufficient and wrinkles are generated on the plate surface.
- the blending amount exceeds 60 parts by weight, the heat resistance of the protective layer is lowered and the plasticizer bleeds out.
- the heat resistance of the protective layer is lowered, the protective layer is damaged by the heat generated by the ablation of the heat-sensitive mask layer, and a plate surface abnormality occurs at that location.
- a plasticizer that is compatible with polyvinyl alcohol and can lower the elastic modulus is preferable.
- a compound in which a hydroxyl group of a polyhydric alcohol compound such as the alcohol compound or sorbitol (hexane-1,2,3,4,5,6-hexaol) is substituted with one or more ethylene glycol groups (for example, hexane-1 , 2,3,4,5,6-hexaoxyethyleneol) and the like.
- Preferred (B) plasticizer for use in the present invention is polyether polyol and / or a compound having three or more hydroxyl groups in one molecule. This is because, by using a polyether polyol compound, the humidity dependency of the plasticizer is lowered and the influence of environmental changes is reduced. On the other hand, by using a compound having three or more hydroxyl groups in one molecule and having a molecular weight of 200 or more, the boiling point of the plasticizer increases, volatilization in the drying process can be suppressed, and stable performance can be expressed.
- plasticizer satisfying both include compounds in which the hydroxyl group of the polyhydric alcohol compound is substituted with ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, propylene glycol, or the like, and aliphatic polyhydric alcohol polyether polyols are particularly preferable. .
- (C) Water-dispersed latex is used to increase the heat resistance of the protective layer.
- the amount of the water-dispersed latex is 5 to 40 parts by weight, preferably 5 to 30 parts by weight. When the blending amount is less than 5 parts by weight, the heat resistance of the (R) protective layer is insufficiently improved. On the other hand, when it exceeds 40 parts by weight, the oxygen barrier property of the (R) protective layer is remarkably lowered.
- Any water-dispersed latex can be used as long as it is uniformly mixed with a blended solution of polyvinyl alcohol and a plasticizer.
- polybutadiene latex natural rubber latex, styrene-butadiene copolymer latex, acrylonitrile-butadiene copolymer latex, polychloroprene latex, polyisoprene latex, polyurethane latex, methyl methacrylate-butadiene copolymer latex, vinylpyridine polymer latex
- water-dispersed latex polymers such as butyl polymer latex, thiocol polymer latex, and acrylate polymer latex, and polymers obtained by copolymerizing these polymers with other components such as acrylic acid and methacrylic acid.
- emulsion stabilizer surfactant
- an oligomer type in terms of miscibility with the blended solution. More preferably, it is particularly preferable to use an acrylic type alkali-soluble resin of an oligomer type.
- the thickness of the protective layer is preferably 0.2 ⁇ m to 5.0 ⁇ m, more preferably 0.5 m to 3.0 ⁇ m. If it is below the above lower limit, the oxygen barrier property is insufficient and the relief plate surface may be roughened. If it is more than the above upper limit, wrinkles are likely to occur and light scattering increases, which is not preferable.
- the present invention blends three components of (A) polyvinyl alcohol, (B) plasticizer, and (C) water-dispersed latex in the protective layer, thereby preventing oxygen inhibition, no plate surface wrinkles, and a plate surface by laser. It has succeeded in developing a printing original plate without any abnormalities. There has never been a protective layer containing these three components, and the present invention is extremely significant.
- the (S) heat-sensitive mask layer used in the original plate of the present invention is composed of a binder and a material having a function of absorbing infrared laser and converting it into heat and a function of blocking ultraviolet light. Further, as an optional component other than these, a pigment dispersant, a filler, a surfactant, a coating aid, or the like can be contained within a range that does not impair the effects of the present invention.
- the (S) thermal mask layer preferably has an optical density of 2.0 or more with respect to actinic radiation, more preferably an optical density of 2.0 to 3.0, and particularly preferably 2.2 to 2.
- the optical density is 5.
- the thickness of the thermal mask layer is preferably 0.5 to 5.0 ⁇ m, more preferably 1.0 to 2.0 ⁇ m. If it is more than the said minimum, a high coating technique is not required but an optical density more than fixed can be obtained. Moreover, if it is below the said upper limit, high energy is not required for evaporation of a thermal mask layer, and it is advantageous in cost.
- the binder is not particularly limited, but a polar copolyamide is preferably used.
- the polyamide used may be appropriately selected from conventionally known cationic polyamides, nonionic polyamides, and anionic polyamides, such as tertiary amine group-containing polyamides, quaternary ammonium base-containing polyamides, ether group-containing polyamides, and sulfonic acids. Examples thereof include group-containing polyamide.
- Examples of the material having the infrared absorption function and the ultraviolet light blocking function include dyes such as phthalocyanine, substituted phthalocyanine derivatives, cyanine, merocyanine dyes, and polymethine dyes, and pigments such as carbon black, graphite, chromium oxide, and iron oxide. .
- dyes such as phthalocyanine, substituted phthalocyanine derivatives, cyanine, merocyanine dyes, and polymethine dyes
- pigments such as carbon black, graphite, chromium oxide, and iron oxide. .
- carbon black is particularly preferable from the viewpoints of photothermal conversion, economic efficiency, and handleability.
- the material having the infrared absorption function and the ultraviolet light blocking function is appropriately used at a concentration that can achieve the optical density and the layer thickness. Generally, it is 1 to 60 weights based on the total weight of the (S) thermal mask layer. %, Preferably 10 to 50% by weight. If it is less than the lower limit, the optical density becomes less than 2.0, and there is a possibility that the infrared absorption function and the ultraviolet light blocking function are not exhibited. On the other hand, when the above upper limit is exceeded, other components such as a binder are insufficient, and the film-forming property may be lowered.
- (S) It is preferable to protect the printing original plate by providing a peelable flexible cover film on the thermal mask layer.
- Suitable examples of the peelable flexible cover film include a polyethylene terephthalate film, a polyethylene naphthalate film, and a polybutylene terephthalate film.
- a protective film is not absolutely necessary.
- the method for producing the flexographic printing original plate of the present invention is not particularly limited, but is generally produced as follows.
- a solution is prepared by dissolving all the components of the heat-sensitive mask layer in an appropriate solvent, or when using a pigment such as carbon black, all components other than the pigment are dissolved in an appropriate solvent, and the pigment is added thereto. Disperse to prepare a dispersion. Next, such a solution or dispersion is applied onto a support for a thermal mask layer (eg, a PET film), and the solvent is evaporated. Thereafter, the protective layer component is overcoated to produce one laminate. Further, separately from this, a photosensitive resin layer is formed on the support by coating, and the other laminate is prepared. The two laminates thus obtained are laminated so that the photosensitive resin layer is adjacent to the protective layer under pressure and / or heating.
- the heat-sensitive mask layer support functions as a protective film on the surface of the printing original plate after completion.
- a protective film As a method for producing a printing plate from the printing original plate of the present invention, when a protective film is present, the protective film is first removed from the photosensitive printing plate. Thereafter, the thermal mask layer is irradiated imagewise with an IR laser to form a mask on the photosensitive resin layer.
- suitable IR lasers include ND / YAG laser (1064 nm) or diode laser (eg, 830 nm).
- Laser systems suitable for computer plate making technology are commercially available. For example, a diode laser system CDI Spark (Esco Graphics) or a semiconductor laser system Thermoflex (Kodak) can be used. This laser system includes a rotating cylindrical drum that holds a printing original, an IR laser irradiation device, and a layout computer, and image information is directly transferred from the layout computer to the laser device.
- the photosensitive printing original plate is irradiated with actinic rays through the mask.
- actinic rays having a wavelength of 150 to 500 nm, particularly 300 to 400 nm can be used.
- a low-pressure mercury lamp, a high-pressure mercury lamp, an ultrahigh-pressure mercury lamp, a metal halide lamp, a xenon lamp, a zirconium lamp, a carbon arc lamp, an ultraviolet fluorescent lamp, or the like can be used. Thereafter, the irradiated plate is developed to obtain a printing plate.
- the development step can be performed with a conventional development unit.
- thermo mask layer coating liquid a mixture of carbon black dispersion (AMBK-8, manufactured by Orient Chemical Industry Co., Ltd.) and copolymerized polyamide was used.
- Example 1 Preparation of Composition I for Protective Layer Polyvinyl alcohol (PVA405 Kuraray Co., Ltd., saponification degree 82%) and plasticizer (Sunflex SE270 Sanyo Chemical Industries Co., Ltd. aliphatic polyhydric alcohol polyether polyol (hexane- 1,2,3,4,5,6-hexaol modified with oxyethyleneol, solid concentration of 85%) and NBR latex (SX1503A, manufactured by Nippon Zeon Co., Ltd., solid content concentration of 42%), 50/30 /
- the composition for protective layer I was obtained by mixing at a weight ratio of 20.
- thermal mask layer coating liquid of the reference example was applied using bar coater # 12. And dried at 120 ° C. for 5 minutes.
- the optical density at this time was 2.3. This optical density was measured by a black and white transmission densitometer DM-520 (Dainippon Screen Mfg. Co., Ltd.).
- the protective layer composition I was applied using an appropriate type of bar coater so as to have a thickness of 1.5 ⁇ m, and dried at 120 ° C. for 5 minutes.
- the photosensitive resin composition of the reference example is placed on a PET film support (Toyobo Co., Ltd., E5000, thickness 125 ⁇ m) coated with a flexographic printing plate copolymer polyester adhesive, and a thermal mask film is formed thereon. Are superimposed. Lamination was performed at 100 ° C. using a heat press machine to obtain a flexographic printing original plate comprising a PET support, an adhesive layer, a photosensitive resin layer, a protective layer, a thermal mask layer, and a release-treated PET protective film (cover film). The total thickness of the plate was 1.90 mm.
- the plate After ablation, the plate was taken out and returned to the flat surface, and irradiated with actinic radiation (light source Philips 10R, illuminance 8 mW / cm 2 at 365 nm) for 6 minutes. Thereafter, development was carried out at 40 ° C. for 8 minutes using a developing machine (Stuck System) manufactured by A & V. As the developer, tap water to which 1% of dishwashing detergent Cascade (P & G, USA) was added was used. After development, the film was dried at 60 ° C. for 10 minutes, irradiated with actinic radiation for 10 minutes, and finally irradiated with a germicidal lamp for 5 minutes to remove surface tackiness.
- actinic radiation light source Philips 10R, illuminance 8 mW / cm 2 at 365 nm
- Example 2 Hereinafter, evaluation similar to Example 1 was performed using the composition II for protective layers.
- Polyvinyl alcohol PVA405 manufactured by Kuraray Co., Ltd., saponification degree 82%), plasticizer (glycerin) and NBR latex (SX1503A Nippon Zeon Co., Ltd. solid content concentration 42%) in a weight ratio of 50/30/20
- PVA405 manufactured by Kuraray Co., Ltd., saponification degree 82
- plasticizer glycerin
- NBR latex SX1503A Nippon Zeon Co., Ltd. solid content concentration 42
- Example 3 Hereinafter, evaluation similar to Example 1 was performed using the composition III for protective layers.
- Polyvinyl alcohol PVA405 Kuraray Co., Ltd., saponification degree 82%) and plasticizer (Sunflex SE270 Sanyo Chemical Industries aliphatic polyhydric alcohol polyether polyol (hexane-1,2,3,4,5,6) -Hexaol modified with oxyethyleneol), solid content concentration 85%) and NBR latex (SX1503A, Nippon Zeon Co., Ltd. solid content concentration 42%) are mixed at a weight ratio of 70/20/10 to provide a protective layer A composition III was obtained.
- PVA405 Kuraray Co., Ltd., saponification degree 82%) and plasticizer Sunflex SE270 Sanyo Chemical Industries aliphatic polyhydric alcohol polyether polyol (hexane-1,2,3,4,5,6) -Hexaol modified with oxyethyleneol), solid content concentration 85%
- NBR latex SX1503A, Nippon Ze
- Example 4 Hereinafter, evaluation similar to Example 1 was performed using composition IV for protective layers.
- Polyvinyl alcohol KH20, Nippon Synthetic Chemical Industry Co., Ltd., saponification degree 80%
- plasticizer Sunflex SE270, Sanyo Chemical Industries aliphatic polyhydric alcohol polyether polyol (hexane-1,2,3,4,4) 5,6-hexaol modified with oxyethyleneol), solid content concentration 85%
- NBR latex SX1503A, Nippon Zeon Co., Ltd. solid content concentration 42%) were mixed at a weight ratio of 60/30/10.
- a protective layer composition IV was obtained.
- Example 5 Hereinafter, evaluation similar to Example 1 was performed using the composition V for protective layers.
- Polyvinyl alcohol PVA405 Kuraray Co., Ltd., saponification degree 82%) and plasticizer (Sunflex SE270 Sanyo Chemical Industries aliphatic polyhydric alcohol polyether polyol (hexane-1,2,3,4,5,6) -Hexaol modified with oxyethyleneol), solid content concentration 85%) and NBR latex (SX1503A Nippon Zeon Co., Ltd. solid content concentration 42%) are mixed at a weight ratio of 40/40/20 to provide a protective layer A composition V was obtained.
- Comparative Example 1 Hereinafter, evaluation similar to Example 1 was performed using the composition I for comparative protective layers.
- the composition I for comparative protective layers was obtained using polyvinyl alcohol (PVA405 Kuraray Co., Ltd., saponification degree 82%) simple substance.
- Comparative Example 2 Hereinafter, evaluation similar to Example 1 was performed using the composition II for comparative protective layers.
- Polyvinyl alcohol PVA405 Kuraray Co., Ltd., saponification degree 82%) and plasticizer (Sunflex SE270 Sanyo Chemical Industries aliphatic polyhydric alcohol polyether polyol (hexane-1,2,3,4,5,6) -Hexaol modified with oxyethyleneol) and a solid concentration of 85%
- PVA405 Kuraray Co., Ltd., saponification degree 82%) and plasticizer Sunflex SE270 Sanyo Chemical Industries aliphatic polyhydric alcohol polyether polyol (hexane-1,2,3,4,5,6) -Hexaol modified with oxyethyleneol) and a solid concentration of 85%
- Comparative Example 3 Hereinafter, evaluation similar to Example 1 was performed using the composition III for comparative protective layers.
- Polyvinyl alcohol (PVA405 Kuraray Co., Ltd., saponification degree 82%) and a plasticizer (glycerin) were mixed at a weight ratio of 60/40 to obtain a comparative protective layer composition III.
- Comparative Example 4 evaluation similar to Example 1 was performed using the composition IV for comparative protective layers.
- Polyvinyl alcohol PVA405 Kuraray Co., Ltd., saponification degree 82%) and NBR latex (SX1503A Nippon Zeon Co., Ltd. solid content concentration 42%) are mixed at a weight ratio of 70/30 to form a protective layer composition. IV was obtained.
- Comparative Example 5 Hereinafter, evaluation similar to Example 5 was performed using the composition V for comparative protective layers.
- Polyvinyl alcohol PVA405 Kuraray Co., Ltd., saponification degree 82%) and plasticizer (Sunflex SE270 Sanyo Chemical Industries aliphatic polyhydric alcohol polyether polyol (hexane-1,2,3,4,5,6) -Hexaol modified with oxyethyleneol), solid content concentration 85%) and NBR latex (SX1503A, manufactured by Nippon Zeon Co., Ltd., solid content concentration 42%) are mixed at a weight ratio of 20/50/30 for comparative protection.
- Layer composition V was obtained.
- the flexographic printing original plate of the present invention is extremely useful as a flexographic CTP plate to be made by computer plate making technology because it is a flexible water-development plate but hardly causes wrinkles or laser marks on the plate surface.
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Abstract
Description
(A)ポリビニルアルコール 25重量部~80重量部
(B)可塑剤 15重量部~60重量部
(C)水分散ラテックス 5重量部~40重量部
(B)可塑剤 15重量部~60重量部
(C)水分散ラテックス 5重量部~40重量部
アクリロニトリル-ブタジエンラテックス(Nipol SX1503 不揮発分42% 日本ゼオン(株)製)10重量部、ブタジエンラテックス(Nipol LX111NF 不揮発分55% 日本ゼオン(株)製)58重量部、オリゴブタジエンアクリレート(ABU-2S 共栄社化学(株)製)28重量部、ラウリルメタクリレート(ライトエステルL 共栄社化学(株)製)4重量部、ジメチロールトリシクロデカンジアクリレート4重量部、光重合開始剤1重量部、重合禁止剤としてハイドロキノンモノメチルエーテル0.1重量部、その他の添加剤としてノニオン系界面活性剤0.1重量部をトルエン15重量部とともに容器中で混合し、次に加圧ニーダーを用いて105℃で混練し、その後トルエンと水を減圧除去することにより、感光性樹脂組成物Aを得た。この組成物Aの押し込み変位量を測定したところ、15μmであった。
感熱マスク層の塗工液には、カーボンブラック分散液(オリエント化学工業(株)製、AMBK-8)と共重合ポリアミドの混合物を用いた。混合物中の各成分の混合割合は、固形分重量比でカーボンブラック:分散樹脂:共重合ポリアミド=35:28:37であった。
保護層用組成物Iの調製
ポリビニルアルコール(PVA405 (株)クラレ製、ケン化度82%)と可塑剤(サンフレックスSE270 三洋化成工業(株)製 脂肪族多価アルコール系ポリエーテルポリオール(ヘキサン-1,2,3,4,5,6-ヘキサオールのオキシエチレンオール変性物、 固形分濃度85%)とNBRラテックス(SX1503A 日本ゼオン(株)製 固形分濃度42%)を、50/30/20の重量割合で混合して保護層用組成物Iを得た。
PETフィルム(東洋紡績(株)、E5000、厚さ100μm)の両面に離型処理を施した後、参考例の感熱マスク層塗工液をバーコーター♯12を用いて塗工し、120℃×5分乾燥した。この時の光学濃度は2.3であった。この光学濃度は白黒透過濃度計DM-520(大日本スクリーン製造(株))によって測定した。次いで、上記保護層用組成物Iを厚みが1.5μmになるように適切な種類のバーコーターを用いて塗工し、120℃×5分乾燥した。
共重合ポリエステル系接着剤を塗工したPETフィルム支持体(東洋紡績(株)、E5000、厚さ125μm)上に参考例の感光性樹脂組成物を配置し、その上から感熱マスクフィルムを重ね合わせた。ヒートプレス機を用いて100℃でラミネートし、PET支持体、接着層、感光性樹脂層、保護層、感熱マスク層および離型処理PET保護フィルム(カバーフィルム)からなるフレキソ印刷原版を得た。版の総厚は1.90mmであった。
まず、フロアー層を形成するために原版のPET支持体側から化学線(光源Philips10R、365nmにおける照度8mW/cm2)を1分間照射した。続いて、離型処理PETフィルム(カバーフィルム)を剥離した。この版を、Thermoflex Narrow(KODAK社製)の回転ドラムに感熱マスク層が表側にくるように巻き付け、真空引き後、画像形成を行った。アブレーション後、版を取り出し平面に戻し、化学線(光源Philips10R、365nmにおける照度8mW/cm2)を6分照射した。その後、A&V(株)製現像機(Stuck System)で、40℃で8分現像を行った。現像液には、食器洗剤Cascade(米国P&G製)を1%添加した水道水を使用した。現像後、60℃で10分乾燥し、化学線を10分間照射し、最後に表面粘着性を除去するために殺菌灯を5分間照射した。
上記のようにして得られた各印刷版の性能を、以下のようにして評価した。
皺:皺を目視で評価した。
○:皺なし。
×:皺あり。
版面荒れ 版面荒れを目視で評価した。
○:版面荒れなし。
×:版面に荒れがある。
レーザ痕 前記「フレキソ印刷原版からの印刷版の製造」において、印刷原版として、温度20℃、相対湿度50%、80%または90%で24時間保管したものを使用し、その他の条件は同様にして、印刷版を得た。得られた印刷版の表面を目視観察し、レーザ痕の有無を評価した。
○:いずれの相対湿度で保管したものでも版面に異常(凹み、走査スジ)なし。
△:相対湿度80%および90%で保管したもので軽微な走査スジが認められるが、相対湿度50%で保管したものには版面異常なし。
×:すべての相対湿度で保管したもので版面に異常あり。
以下、保護層用組成物IIを用いて実施例1と同様の評価を行った。
ポリビニルアルコール(PVA405 (株)クラレ製、ケン化度82%)と可塑剤(グリセリン)とNBRラテックス(SX1503A 日本ゼオン(株)製 固形分濃度42%)を、50/30/20の重量割合で混合して保護層用組成物IIを得た。
以下、保護層用組成物IIIを用いて実施例1と同様の評価を行った。
ポリビニルアルコール(PVA405 (株)クラレ製、ケン化度82%)と可塑剤(サンフレックスSE270 三洋化成工業製 脂肪族多価アルコール系ポリエーテルポリオール(ヘキサン-1,2,3,4,5,6-ヘキサオールのオキシエチレンオール変性物)、 固形分濃度85%)とNBRラテックス(SX1503A 日本ゼオン(株)製
固形分濃度42%)を、70/20/10の重量割合で混合して保護層用組成物IIIを得た。
以下、保護層用組成物IVを用いて実施例1と同様の評価を行った。
ポリビニルアルコール(KH20 日本合成化学工業(株)製、ケン化度80%)と可塑剤(サンフレックスSE270 三洋化成工業製 脂肪族多価アルコール系ポリエーテルポリオール(ヘキサン-1,2,3,4,5,6-ヘキサオールのオキシエチレンオール変性物)、 固形分濃度85%)とNBRラテックス(SX1503A 日本ゼオン(株)製 固形分濃度42%)を、60/30/10の重量割合で混合して保護層用組成物IVを得た。
以下、保護層用組成物Vを用いて実施例1と同様の評価を行った。
ポリビニルアルコール(PVA405 (株)クラレ製、ケン化度82%)と可塑剤(サンフレックスSE270 三洋化成工業製 脂肪族多価アルコール系ポリエーテルポリオール(ヘキサン-1,2,3,4,5,6-ヘキサオールのオキシエチレンオール変性物)、 固形分濃度85%)とNBRラテックス(SX1503A 日本ゼオン(株)製
固形分濃度42%)を、40/40/20の重量割合で混合して保護層用組成物Vを得た。
以下、比較保護層用組成物Iを用いて実施例1と同様の評価を行った。
ポリビニルアルコール(PVA405 (株)クラレ製、ケン化度82%)単体を用いて比較保護層用組成物Iを得た。
以下、比較保護層用組成物IIを用いて実施例1と同様の評価を行った。
ポリビニルアルコール(PVA405 (株)クラレ製、ケン化度82%)と可塑剤(サンフレックスSE270 三洋化成工業製 脂肪族多価アルコール系ポリエーテルポリオール(ヘキサン-1,2,3,4,5,6-ヘキサオールのオキシエチレンオール変性物)、 固形分濃度85%)を、60/40の重量割合で混合して比較保護層用組成物IIを得た。
以下、比較保護層用組成物IIIを用いて実施例1と同様の評価を行った。
ポリビニルアルコール(PVA405 (株)クラレ製、ケン化度82%)と可塑剤(グリセリン)を、60/40の重量割合で混合して比較保護層用組成物IIIを得た
以下、比較保護層用組成物IVを用いて実施例1と同様の評価を行った。
ポリビニルアルコール(PVA405 (株)クラレ製、ケン化度82%)とNBRラテックス(SX1503A 日本ゼオン(株)製 固形分濃度42%)を、70/30の重量割合で混合して保護層用組成物IVを得た。
以下、比較保護層用組成物Vを用いて実施例5と同様の評価を行った。
ポリビニルアルコール(PVA405 (株)クラレ製、ケン化度82%)と可塑剤(サンフレックスSE270 三洋化成工業製 脂肪族多価アルコール系ポリエーテルポリオール(ヘキサン-1,2,3,4,5,6-ヘキサオールのオキシエチレンオール変性物)、 固形分濃度85%)とNBRラテックス(SX1503A 日本ゼオン(株)製
固形分濃度42%)を、20/50/30の重量割合で混合して比較保護層用組成物Vを得た。
Claims (3)
- 少なくとも支持体、感光性樹脂層、保護層、感熱マスク層が順次積層されてなる感光性印刷原版であって、保護層が(A)ポリビニルアルコール、(B)可塑剤、(C)水分散ラテックスを以下の割合で含有することを特徴とする水現像可能なフレキソ印刷原版。
(A)ポリビニルアルコール 25重量部~80重量部
(B)可塑剤 15重量部~60重量部
(C)水分散ラテックス 5重量部~40重量部 - (B)可塑剤がポリエーテルポリオール化合物であることを特徴とする請求項1に記載のフレキソ印刷原版。
- (B)可塑剤が一分子中に3つ以上の水酸基をもち、分子量が200以上であることを特徴とする請求項1または2に記載のフレキソ印刷原版。
Priority Applications (6)
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|---|---|---|---|
| CN2010800327210A CN102472972B (zh) | 2009-07-30 | 2010-07-26 | 柔性版印刷原版 |
| ES10804347.2T ES2644548T3 (es) | 2009-07-30 | 2010-07-26 | Una placa original de impresión flexográfica |
| JP2010533775A JP5573675B2 (ja) | 2009-07-30 | 2010-07-26 | フレキソ印刷原版 |
| US13/379,846 US8663808B2 (en) | 2009-07-30 | 2010-07-26 | Flexographic printing original plate |
| EP10804347.2A EP2461215B1 (en) | 2009-07-30 | 2010-07-26 | Flexographic printing original plate |
| PL10804347T PL2461215T3 (pl) | 2009-07-30 | 2010-07-26 | Fleksograficzna pierwotna płyta drukowa |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009177705 | 2009-07-30 | ||
| JP2009-177705 | 2009-07-30 |
Publications (1)
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| WO2011013601A1 true WO2011013601A1 (ja) | 2011-02-03 |
Family
ID=43529256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2010/062493 Ceased WO2011013601A1 (ja) | 2009-07-30 | 2010-07-26 | フレキソ印刷原版 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8663808B2 (ja) |
| EP (1) | EP2461215B1 (ja) |
| JP (1) | JP5573675B2 (ja) |
| CN (1) | CN102472972B (ja) |
| ES (1) | ES2644548T3 (ja) |
| PL (1) | PL2461215T3 (ja) |
| WO (1) | WO2011013601A1 (ja) |
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| WO2013035535A1 (ja) * | 2011-09-09 | 2013-03-14 | 東洋紡株式会社 | フレキソ印刷原版及び水現像性感光性樹脂積層体 |
| JP2014512576A (ja) * | 2011-04-21 | 2014-05-22 | マクダーミッド プリンティング ソリューションズ, エルエルシー | 感光性樹脂積層体及びその熱加工 |
| JP2018091953A (ja) * | 2016-12-01 | 2018-06-14 | 旭化成株式会社 | フレキソ印刷原版 |
| WO2020122001A1 (ja) * | 2018-12-10 | 2020-06-18 | 旭化成株式会社 | フレキソ印刷原版及びフレキソ印刷版の製造方法 |
| JP2020140182A (ja) * | 2019-03-01 | 2020-09-03 | 旭化成株式会社 | フレキソ印刷版用原版 |
| WO2025069850A1 (ja) * | 2023-09-26 | 2025-04-03 | 富士フイルム株式会社 | フレキソ印刷版原版およびフレキソ印刷版の製造方法 |
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| JP5360326B1 (ja) * | 2012-08-29 | 2013-12-04 | 東洋紡株式会社 | フレキソ印刷原版用感光性樹脂組成物 |
| JP5727526B2 (ja) * | 2013-01-09 | 2015-06-03 | 住友ゴム工業株式会社 | フレキソ印刷版とその製造方法、ならびに液晶パネル用基板の製造方法 |
| PL3605229T3 (pl) | 2017-03-31 | 2022-01-31 | Toyobo Co., Ltd. | Światłoczuła, fleksograficzna, pierwotna, forma drukowa CTP |
| US20220283502A1 (en) | 2019-08-23 | 2022-09-08 | Toyobo Co., Ltd. | Flexographic printing plate precursor |
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| WO2013035535A1 (ja) * | 2011-09-09 | 2013-03-14 | 東洋紡株式会社 | フレキソ印刷原版及び水現像性感光性樹脂積層体 |
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| JP2018091953A (ja) * | 2016-12-01 | 2018-06-14 | 旭化成株式会社 | フレキソ印刷原版 |
| JP7036536B2 (ja) | 2016-12-01 | 2022-03-15 | 旭化成株式会社 | フレキソ印刷原版 |
| WO2020122001A1 (ja) * | 2018-12-10 | 2020-06-18 | 旭化成株式会社 | フレキソ印刷原版及びフレキソ印刷版の製造方法 |
| US12099302B2 (en) | 2018-12-10 | 2024-09-24 | Asahi Kasei Kabushiki Kaisha | Flexographic printing raw plate and manufacturing method of flexographic printing plate |
| JP2020140182A (ja) * | 2019-03-01 | 2020-09-03 | 旭化成株式会社 | フレキソ印刷版用原版 |
| JP7267777B2 (ja) | 2019-03-01 | 2023-05-02 | 旭化成株式会社 | フレキソ印刷版用原版 |
| WO2025069850A1 (ja) * | 2023-09-26 | 2025-04-03 | 富士フイルム株式会社 | フレキソ印刷版原版およびフレキソ印刷版の製造方法 |
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| Publication number | Publication date |
|---|---|
| US20120156514A1 (en) | 2012-06-21 |
| CN102472972A (zh) | 2012-05-23 |
| US8663808B2 (en) | 2014-03-04 |
| ES2644548T3 (es) | 2017-11-29 |
| EP2461215A4 (en) | 2014-03-26 |
| JP5573675B2 (ja) | 2014-08-20 |
| EP2461215A1 (en) | 2012-06-06 |
| JPWO2011013601A1 (ja) | 2013-01-07 |
| EP2461215B1 (en) | 2017-09-06 |
| PL2461215T3 (pl) | 2018-02-28 |
| CN102472972B (zh) | 2013-09-11 |
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