JPH07101309B2 - Photosensitive transfer material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a transfer material mainly used for a color proof for color proofing, a display and the like. More specifically, the present invention relates to a photosensitive transfer material suitable for an image forming method in which a transferable image formed on a temporary support is once transferred onto an image receiving sheet and then retransferred onto a permanent support.

<< Prior Art >> A photosensitive transfer material having a release layer made of an organic polymer, a color material layer and a photosensitive layer sequentially laminated on a temporary support is imagewise exposed and then developed to form a release layer on the release layer. A method of forming a color image on a sheet and then transferring this image to an arbitrary support (permanent support) by using an adhesive is well known (Japanese Patent Publication No. 46-15326 and Japanese Patent Publication No. 49-441). Issue).
These methods have the advantage that they can be used for various operations such as overlay type and surprint type, for example, as color proofs, but at the time of transfer, it is necessary to use an adhesive for each operation. It has drawbacks that the process becomes complicated and it is difficult to maintain the accuracy of alignment when transferring each color.

As a method of removing the complexity of these processes, a method of transferring the formed image on a permanent support by applying heat and pressure, JP-A-47-41830, JP-A-48-9337, and It is disclosed in Japanese Patent Laid-Open No. 51-5101 and the like. Especially JP-A-5
1-5101 discloses that a heat-fusible polymer layer is provided as an adhesive on a permanent support, and JP-A-47-41830 also discloses permanent paper such as art paper and coated paper. A method for transferring an image directly to a support is described.

However, these methods have various drawbacks. That is, the final image transferred onto the permanent support is reversed from the original with respect to the original, and when a heat-melting polymer is used as the adhesive, the melting point is generally high, so the transfer temperature is increased. Therefore, there is a problem that the dimensional stability of the support is lowered by the influence of heat, and the misregistration of the transfer position of each color occurs. On the other hand, when a heat-meltable polymer having a low melting point is used as the adhesive, there are drawbacks such that adhesion occurs after image formation and the surface is easily scratched.

As a method for improving the above-mentioned drawbacks, JP-A-59-97140 discloses a method of temporarily transferring an image onto a temporary image-receiving sheet before transferring the image onto a permanent support. In this method, a temporary image-receiving sheet provided with an image-receiving layer made of a photopolymerizable material on a support is prepared, and before the image of each color is transferred onto a permanent support, once on the temporary image-receiving sheet. The image of each color is transferred and then retransferred onto a permanent support, followed by further overall exposure to cure the transferred photopolymerizable image-receiving layer.

The above temporary image receiving sheet (hereinafter simply referred to as image receiving sheet)
The image transfer method using is capable of solving the above problems and obtaining an upright image on a mask original on a permanent support. Further, since the photopolymerizable image-receiving layer of the image-receiving sheet contains an ethylenic polyfunctional monomer which is a photopolymerizable material, the photopolymerizable image-receiving layer itself is soft and transfer at a low temperature is possible. Moreover, after the transfer, the entire surface can be easily cured by exposure. Therefore, there is an advantage that adhesion does not occur after image transfer and the final image has high scratch resistance.

In the case of the image-receiving sheet used in the method described in JP-A-59-97140, the photopolymerizable image-receiving layer (that is,
The adhesive force between the photopolymerizable adhesive layer) and the support is very high in the unexposed state. Therefore, after transferring the photopolymerizable adhesive layer that has received the image onto the final support and peeling off the support of the image-receiving sheet material before carrying out the exposure operation, the transferred image-receiving photopolymerizable adhesive layer is transferred. Peeling streaks are likely to occur on the surface of. Therefore, in the method described in JP-A-59-97140, after transferring the image-receptive photopolymerizable adhesive layer onto the final support, first the entire surface is exposed to cure the photopolymerizable adhesive layer. At the same time, the adhesive force between the photopolymerizable adhesive layer and the image receiving sheet support is reduced, and then the image receiving sheet support is removed.

<< Problems to be Solved by the Invention >> In the above image forming method (image transfer method), as a photosensitive material, a photosensitive layer in which a release layer made of an organic polymer, a colorant layer and a photosensitive layer are sequentially laminated on a support. In the case of using a conductive laminate, first, an image of each color is formed, and then the images of each color are aligned and sequentially transferred to a temporary image-receiving sheet by heat / pressure processing. The surface of the temporary image-receiving sheet after the transfer of one color is the release layer transferred to the first color. Therefore, when the second color image is aligned for transfer onto the first color image, the slipperiness between the interfaces to be aligned may be reduced due to the adhesiveness and thermal adhesiveness which are one of the characteristics of the release layer itself. Insufficient, it is difficult to align, and it is slightly inferior in workability.In addition, when uneven force is strongly applied during transfer, air is taken in and air bubbles are formed in the image after transfer. It turned out that there is a drawback that it is sometimes done. Air bubbles, which is the latter drawback, can be used for practical purposes, but they are not preferable in terms of product value. These tendencies are strongly observed in the non-image area of the second color image, that is, between the peeling layer / peeling layer interface. Further, the above-mentioned drawback is that even in a light-sensitive material provided with a barrier layer between the peeling layer and the color material layer to prevent color material fog in the non-image area after development, the material properties of tackiness and heat fusion are basically the same. In some cases it will occur as well.

Therefore, in the present invention, in the multicolor image forming method using the photosensitive transfer material, after forming each color image, the ease of alignment when transferring the image of each color to the image receiving sheet while aligning the image is improved. It is intended to provide an excellent photosensitive transfer material.

A further object of the present invention is to provide a photosensitive transfer material which is effective in preventing the generation of air bubbles in the transferred image caused by the air taken in between the film surfaces during transfer.

<< Means for Solving Problems >> An object of the present invention is a photosensitive transfer material comprising a temporary support, a release layer mainly composed of an organic polymer and an image forming layer, wherein a matting agent is added to the release layer. Achieved by a photosensitive transfer material characterized by containing.

The material of the temporary support of the photosensitive transfer material of the present invention can be selected from known materials. Examples of such a material include polyethylene terephthalate, polypropylene, polyethylene, polyvinyl chloride, polystyrene, polycarbonate, and cellulose triacetate. Particularly, a biaxially stretched polyethylene terephthalate film has strength, heat resistance, and size. It is preferable from the viewpoint of stability and transparency. The thickness of the temporary support is not particularly limited, but about 50 to 150 μm is suitable.

The release layer provided on the temporary support is generally non-adhesive at room temperature and exhibits adhesiveness and fusion property by heating, and is more suitable than a known organic polymer capable of being released from the temporary support. To be selected.

Examples of the material for the release layer that can be used in the present invention include polyacrylic acid ester, acrylic acid ester copolymer, polymethacrylic acid ester, methacrylic acid ester copolymer, polyacrylamide, acrylamide copolymer, and polyacrylic acid ester. Vinyl acetate, vinyl acetate copolymer, polyvinyl chloride, vinyl chloride copolymer, polyvinylidene chloride copolymer, vinylidene chloride copolymer, polystyrene, styrene copolymer, ethylene copolymer (for example, ethylene-vinyl acetate copolymer , Ethylene / acrylic acid ester copolymer, ethylene / vinyl chloride copolymer, ethylene /
Acrylic acid copolymer), polyvinyl acetal (for example, polyvinyl butyral, polyvinyl formal),
Examples thereof include polyester resin, polyamide resin (for example, nylon, copolymer nylon), various rubbers (for example, synthetic rubber and chlorinated rubber), polyolefin (for example, polyethylene and polypropylene), and the like. These materials may be used alone or as a mixture, but it is particularly preferable to use alcohol-soluble polyamide as a main component. The release layer may further contain various additives such as a tackifying substance and a plasticizer, if desired. The thickness of the release layer is preferably in the range of 0.2 to 10 μm. Further, when the coating solvent for the image forming layer provided on the peeling layer swells or partially dissolves the peeling layer forming material, there arises a disadvantage such as fog of color material in the non-image area after development. Therefore, in order to prevent such an inconvenience, the peeling layer may have a two-layer structure including a barrier layer insoluble in the coating solvent. As described above, although the release layer preferably contains alcohol-soluble polyamide as a main component, alcohols such as methanol, ethanol, and propanol are often used as a coating solvent for the image forming layer. It is preferable to use a material insoluble in alcohol. Such a material can be appropriately selected from various organic polymers exemplified for the release layer and cellulosic resins in consideration of the coating solvent at the time of manufacturing the photosensitive transfer material.

The thickness of the barrier layer is preferably in the range of 0.2 to 10 μm.

Next, the matting agent added to the release layer will be described. Examples of the matting agent include silicon dioxide (including colloidal silica) aluminum oxide, aluminum hydroxide,
Examples of the inorganic polymer such as titanium dioxide, calcium carbonate, zinc oxide and the like, and organic polymers insoluble in the solvent such as cross-linked polystyrene and the like include fine particles.
The average particle size of these matting agents varies depending on the thickness of the layer to be added, but is preferably in the range of 0.005 to 10 μm. The matting agents may be used alone or in combination of two or more. Further, the addition amount is preferably adjusted to be in the range of 0.002 to 20% by weight with respect to the binder of the release layer. If the content ratio of the matting agent is less than this, it is not easy to align the images of the respective colors during transfer, and air bubbles are generated in the transferred image. On the other hand, if it exceeds this range, the thermal adhesiveness of the layer is lowered and the transferability is deteriorated.

When the above-mentioned two-layer type is used as the release layer, the matting agent may be added together with the two layers, or may be added to either one of them, but at least to the barrier layer. The addition amount is preferably adjusted to be in the range of 0.002 to 20% by weight with respect to the binder of the barrier layer.

Next, the image forming layer provided on the release layer will be described.

Since the transfer material of the present invention is used for color proof and the like, it is necessary that the image forming layer is colored in order to form an image of yellow, magenta, cyan, black and the like. Such an image forming layer can be a photosensitive resin layer containing at least a coloring material, and can also have a structure in which a coloring material layer and a photosensitive resin layer are sequentially laminated. In this case, the coloring material layer is basically a layer in which coloring materials such as pigments and dyes are dispersed or dissolved in an organic high molecular polymer (binder).

The coloring material that can be used in the present invention can be appropriately selected and used from known coloring materials as desired. Examples of such color materials include JP-A-47-16124, JP-A-52-89916, US Pat. No. 4472494, JP-A-55-117142, JP-A-55-127552, and color. Various pigments and dyes described in the index and the like can be mentioned. Particularly when used as a color proof for printing, it is preferable to use a pigment system in order to match the color reproducibility with the printed matter.

Basically, the binder containing the color material can be appropriately selected from known binders and used alone or as a mixture, but the cost of the developer, working environment, ease of waste liquid treatment, etc. From the viewpoint of, it is preferable to use an alkali-soluble binder.

Examples of alkali-soluble binders are described in US Pat. No. 289336.
No. 8 (polymer containing salt-forming groups), US Pat. No. 2
No. 927022 (Cellulose polymer containing an acid group),
West German Patent Publication (OLS) No. 2123702 (copolymer, for example, methyl methacrylate / methacrylic acid copolymer), OLS No. 2205146 (acid-containing polymer, for example, styrene / mono-n-butylmalate copolymer, Or vinyl acetate / crotonic acid copolymer), OLS 2320849 (vinyl addition polymer containing free carboxylic acid groups, eg, one or more alkyl acrylates copolymerized with acrylic acid), JP-B-59-44615 Publication (copolymer, for example, methacrylic acid / aralkyl methacrylate copolymer)
It is described in. Further, the organic compounds described in JP-A-47-16124, JP-A-52-89916, US Pat.No. 4472494, JP-A-55-117142, JP-A-55-127552, etc. It is also possible to use high molecular weight polymers (bonds), phenol resins, rosins, polyhydroxystyrenes and the like.

If desired, additives such as a plasticizer, a pigment dispersion stabilizer, and a surfactant may be added to the color material layer.

The ratio of the coloring material in the coloring material varies depending on the purpose, but is 5 to 50% by weight.
It is preferably in the range of.

Next, the photosensitive resin layer will be described.

The photosensitive resin layer is a layer made of a photosensitive film-forming substance, and is a layer having different properties such as solubility in a solvent between an exposed portion after exposure and an unexposed portion. By utilizing this property, either part can be selectively removed. As a material having such properties,
Various things are known. Representative examples include photopolymerizable compounds, photodegradable compounds, photocrosslinkable compounds, and the like.

As an example of the photopolymerizable compound, a monomer compound such as a polyfunctional vinyl monomer or a vinylidene compound having a boiling point of 150 ° C. or higher under normal pressure and capable of forming a photopolymer by at least one addition polymerization is suitable.

The vinyl monomer or vinylidene compound is preferably an unsaturated ester of polyol, particularly an ester of acrylic acid or methacrylic acid. Specific examples include ethylene glycol diacrylate, glycerin triacrylate, polyacrylate, ethylene glycol dimethacrylate, 1,3-propanediol dimethacrylate, polyethylene glycol dimethacrylate, 1,2,4-butanetriol-trimethacrylate, trimethylol. Ethane triacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol-polyacrylate, 1, 3-propanediol-diacrylate, 1,5-pentanediol-dimethacrylate, polyester with a molecular weight in the range of 200-400. Bisacrylates of glycol, and bis methacrylate and similar compounds.

An unsaturated amide can also be used as the monomer compound, and examples thereof include unsaturated amides of acrylic acid and methacrylic acid having α, ω-diamine, and ethylenebismethacrylamide. The alkylene chain of the unsaturated amide may be opened by carbon atoms. However, the photopolymerizable monomer is not limited to these compounds.

The photosensitive resin layer containing the photopolymerizable compound is composed of an organic polymer binder and a photopolymerization initiator activated by actinic rays, and a thermal polymerization inhibitor is added if necessary.

Examples of the photopolymerization initiator include benzophenone, Michler's ketone [4,4′-bis (dimethylamino) benzophenone], 4,4′-bis (dimethylamino) benzophenone, 4-methoxy-4′-dimethylaminobenzophenone, 2 -Aromatic ketones such as ethylanthraquinone, phenanthraquinone, and other aromatic ketones; Benzoin ethers such as benzoin, benzoin methyl ether, benzoin ethyl ether and benzoin phenyl ether; methylbenzoin, ethylbenzoin and others Benzoins; and 2- (o
-Chlorophenyl) -4,5-diphenylimidazole dimer, 2- (o-chlorophenyl) -4,5- (m-methoxyphenyl) imidazole dimer, 2- (o-fluorophenyl) -4,5- Diphenylimidazole dimer,
2- (o-methoxyphenyl) -4,5-diphenylimidazole dimer, 2- (p-methoxyphenyl) -4,5
-Diphenylimidazole dimer, 2,4-di (p-methoxyphenyl) -5-phenylimidazole dimer, 2
-(2,4-Dimethoxyphenyl) -4,5-diphenylimidazole dimer, 2- (p-methylmercaptophenyl) -4,5-diphenylimidazole dimer, and U.S. Pat. No. 3,479,185, British Patent No. 1,047,569 and U.S. Pat.No. 3,784,557, as described in 2,
Examples include 4,5-triacrylimidazole dimer.

As the organic polymer binder, vinyl polymer materials are particularly preferable from the viewpoint of compatibility with the above-mentioned monomer compound and photopolymerization initiator. Examples of vinyl-based polymer substances include:
Various substances such as polyvinyl chloride, polyacrylic acid, polymethyl acrylate, polyethyl acrylate, polybutyl acrylate, polymethacrylic acid, methyl polymethacrylate, polyvinyl ether, polyvinyl acetal and their copolymers However, the present invention is not limited to these.

Here, the mixing ratio of the monomer compound and the organic polymer binder, the appropriate ratio also varies depending on the combination of the monomer compound and the organic polymer binder used, but generally 1:10 to 2: 1 (weight Ratio) is preferred. At this time, the amount of the photopolymerization initiator added is based on the weight of the monomer compound used.
The range of 0.01 to 20% by weight is preferable.

Examples of the thermal polymerization inhibitor include p-methoxyphenol, hydroquinone, alkyl- or aryl-substituted hydroquinone, tertiary butyl catechol, pyrogallol, naphthylamine, β-naphthol, phenothiazine, pyridine, nitrobenzene, o-toluquinone, aryl phosphite and the like. However, the present invention is not limited to these.

Examples of the photodegradable compound include a quinonediazide-based photosensitive substance.

Typical examples of the photocrosslinkable compound include polyvinyl cinnamate derived from polyvinyl alcohol. In addition, a compound having an azido group as a photosensitive group,
Examples thereof include mixtures with binders such as polyacrylamide, polyacrylonitrile, alcohol-soluble nylon, rubbers, styrene / butadiene copolymers, and phenol resins.

The photosensitive material used for the photosensitive resin layer is the cost of the developer,
From the viewpoints of workability, ease of waste liquid treatment, and the like, it is preferable to use a photopolymerizable or photodegradable compound.

Both layers can be integrated by using a photosensitive resin as a binder for the color material layer.

The photosensitive resin layer is prepared by mixing and dissolving one of the above-mentioned photosensitive materials with an organic polymer binder or the like using the above-mentioned appropriate solvent to prepare a coating liquid (photosensitive liquid), and applying this by a similar method. It can be formed by drying after applying on the colored material layer.

The layer thickness of the photosensitive resin layer varies depending on the intended image forming material and the photosensitive material used, but is generally 0.1 to 2
It is in the range of 0 μm, preferably in the range of 0.4 to 5 μm.

Incidentally, for the details of the material of the photosensitive resin layer and the method for forming the same, for example, JP-B-46-15326, JP-B-46-35682, JP-A-44-72494, JP-A-47-41830, JP-A-47-41830, Sho 48-93337
No. 4, JP-A-49-441, JP-B-55-6210, JP-A-51-5101
Nos. 59-97140 and 60-46694, and U.S. Pat. No. 3887450.

Further, the image-forming material of the present invention may be provided with a protective layer for the purpose of improving scratch resistance or preventing deterioration of sensitivity due to oxygen. The protective layer can be formed, for example, by applying a solution of a polymer substance such as polyvinyl alcohol, polyvinyl acetate, a copolymer of methyl vinyl ether / maleic anhydride, polyvinyl pyrrolidone, gelatin, gum arabic, and drying.

Hereinafter, the present invention will be described based on examples, but the present invention is not limited thereto.

Example 1 First, a solution having the following composition was prepared as a coating liquid for forming a release layer.

Alcohol-soluble polyamide 7.2g (CM-8000, manufactured by Toray Industries, Inc., "η" = 23cps (20 ° C, 10% by weight methanol solution) Pyrihydroxystyrene 1.8g (resin M, manufactured by Maruzen Oil Co., Ltd., average molecular weight: 5500) Silicon dioxide 0.03g (Syloid 266, manufactured by Fuji Davison Chemical Co., Ltd., average particle size: 2.5μ) Methanol 400g Methylcellosolve 100g This coating solution is uniformly applied onto a polyethylene terephthalate film (temporary support) having a thickness of 100μm. After coating and drying, a release layer having a dry film thickness of 0.5 μm was provided.

Next, in order to form a color material layer, a mother liquor A for dispersing a pigment having the following formulation was prepared.

Mother liquor A Styrene / maleic acid copolymer resin 20 g (Oxylac SH-101, manufactured by Nippon Shokubai Chemical Co., Ltd.) Methyl ethyl ketone 80 g Next, using mother liquor A, a four-color pigment dispersion having the following composition was prepared.

Yellow color material layer coating liquid Mother liquor A 110 g Methyl ethyl ketone 40 g Methyl cellosolve acetate 25 g Seika Fast Yellow 24.4 g H-0755 (Dainippon Seika Chemicals Ltd.) Magenta Color material layer forming coating liquid A 110 g Methyl ethyl ketone 40 g Methyl cellosolve Acetate 25g Seika Fast Carmine 12.2g 1483 (manufactured by Dainippon Seika Chemicals Co., Ltd.) Cyan colorant layer forming coating solution Mother liquor A 110g Methyl ethyl ketone 40g Methyl cellosolve acetate 25g Cyanine blue 4920 12.2g (manufactured by Dainippon Seika Chemicals Co., Ltd.) Coating liquid for forming black color material layer Mother liquor A 110g Methyl ethyl ketone 40g Methyl cellosolve acetate 25g Mitsubishi carbon black 12.2g MA-100 (manufactured by Mitsubishi Kasei Co., Ltd.) The dispersion was prepared by using a test disperser (Toyo Seiki Co., Ltd.). ) Made by
It went with a paint shaker) for 3 hours.

Next, a diluted pigment dispersion having the following formulation was prepared.

Methyl ethyl ketone 550g Methyl cellosolve acetate 130g Fluorosurfactant 2g (Florard FC-430 manufactured by Sumitomo 3M) After diluting the four-color pigment dispersion with the above diluent at the following weight ratio, stirring operation for 10 minutes, ultrasonic wave The dispersion operation was performed for 10 minutes to obtain a color material layer coating liquid.

After filtering the coloring material layer coating liquid with Toyo Filter Paper No. 63 filter, these four coloring material liquids are coated on a four-layered temporary support provided with a peeling layer using a wheeler and then at 100 ° C. for 2 minutes. It dried and formed the color material layer of each of four colors.

Yellow layer: Pigment dispersion / diluent 3.5 / 46.5 Layer thickness 1.0 μm Optical density (blue filter) 0.5 Magenta layer: Pigment dispersion / dilution 4/46 Layer thickness 0.7 μm Optical density (green filter) 0.75 Cyan layer: Pigment Dispersion / dilution 4/46 Layer thickness 0.8 μm Optical density (red filter) 0.65 Black layer: Pigment dispersion / dilution 5.5 / 44.5 Layer thickness 0.7 μm Optical density (no filter) 0.90 Further color material layers A positive-type photosensitive solution having the following composition was filtered on the above with a No. 63 filter, coated with a wheel and dried at 100 ° C. for 2 minutes to form a photosensitive layer having a layer thickness of 1 μm.

1,2-naphthoquinone- (2) -diazide-5-sulfonic acid cumylphenol ester 1.36 g novolac type phenolform aldehyde resin (PR-50716, Sumitomo Durres Co., Ltd.)
2.86g Abietic acid 0.32g Fluorosurfactant (Megafuck F-104, manufactured by Dainippon Ink and Chemicals, Inc.) 0.05g n-propyl acetate 84g cyclohexanone 42g [Example 2] Production of photosensitive transfer material Example A 0.5 μm release layer was formed under the same conditions except that silicon dioxide was removed from the release layer coating composition of No. 1.

Next, a solution having the following composition was prepared as a coating liquid for forming a barrier layer.

Polymethylmethacrylate 3g (Average molecular weight: 100,000) Methylethylketone 80g Methylcellosolve acetate 20g Silicon dioxide (Syloid 244, manufactured by Fuji Devison Chemical Co., Ltd., average particle size: 3.3μ) 0.05g This coating solution is applied to the undercoat layer above. Apply evenly, dry,
A barrier layer having a dry film thickness of 0.5 μm was provided.

Next, in order to form a colorant layer, a mother liquor I and a mother liquor II for pigment dispersion having the following formulations were prepared.

Mother liquor I Styrene / maleic acid copolymer resin 20 g (Oxylac SH-101, manufactured by Nippon Shokubai Chemical Co., Ltd.) n-Propanol 80 g Mother liquor II Methoxymethylated nylon 10 g (Tresin MF-30, manufactured by Teikoku Chemical Co., Ltd.) Methanol 90 g Next, mother liquor I and mother liquor II were used to prepare a four-color pigment dispersion having the following composition.

Yellow colorant layer forming coating liquid Mother liquor I 95g Mother liquor II 30g n-Propanol 28g Acetone 20g Seika Fast Yellow 12.2g H-0755 (Dainippon Seika Chemicals Ltd.) Magenta colorant layer forming coating liquid Mother liquor I 95g Mother liquor II 30g n-Propanol 28g Acetone 20g Seika Fast Carmine 12.2g 1483 (manufactured by Dainippon Seika Co., Ltd.) Cyan colorant layer forming coating solution Mother liquor I 95g Mother liquor II 30g n-Propanol 28g Acetone 20g Cyanine blue 4920 12.2g ( Dainippon Seika Chemicals Co., Ltd. Black color material layer forming coating solution Mother liquor I 95g Mother liquor II 30g n-Propanol 28g Acetone 20g Mitsubishi carbon black 12.2g MA-100 (manufactured by Mitsubishi Kasei Co., Ltd.) Dispersion preparation Is a test disperser (manufactured by Toyo Seiki Co., Ltd.,
Paint shaker) for 6 hours.

Next, a diluted pigment dispersion liquid having the following formulation was prepared.

Methyl ethyl ketone 40g Acetone 28g Fluorosurfactant 0.2g (Florard FC-430, manufactured by Sumitomo 3M Co., Ltd.) After diluting the four-color pigment dispersion with the above-mentioned diluent at the following weight ratio, stirring operation for 10 minutes, Ultrasonic dispersion operation was performed for 10 minutes to obtain a color material layer coating solution.

After filtering the color material layer coating liquid with Toyo Filter Paper No. 63 filter, the color material liquids of these four colors are coated on a four-layer temporary support having an undercoat layer using a wheeler, and at 100 ° C. It dried for 2 minutes and formed the color material layer of each of four colors.

Yellow layer: Optical density (blue filter) 0.50g Magenta layer: Optical density (green filter) 0.75g Cyan layer: Optical density (red filter) 0.65g Black layer: Optical density (no filter) 0.90g Each of the four colors The same photosensitive layer as in Example 1 was formed on the material layer under the same conditions to form a photosensitive transfer material.

Example 3 A solution having the following composition was prepared as a release layer-forming coating solution.

Coating liquid for release layer Alcohol-soluble polyamide 7.2g (CM-8000, viscosity: 23cps, manufactured by Toray Industries, Inc.) Polyhydroxystyrene 1.8g (Resin M, average molecular weight: 5,500, manufactured by Maruzen Petroleum Co., Ltd.) Methanol 400g Methylcellosolve 100 g Silicon dioxide 0.45 g (Aerosil TT-600, manufactured by Nippon Aerosil Co., Ltd., average particle size: 40 nm) This coating solution is uniformly applied on a polyethylene terephthalate film (support, thickness: 100 μm), dried and dried. A peeling layer having a thickness of 0.5 μm was provided.

Next, for the purpose of forming an N → P type image, four color photosensitive solutions of yellow (Y), magenta (M), cyan (C) and black (B) are used as coating liquids for forming the photosensitive resin layer. Each composition was adjusted so as to have the composition shown in Table 1 below.

Each of these four color photosensitive solutions was applied and dried on each of the four supports provided with a release layer to form a photosensitive resin layer having a dry thickness of 2.4 μm.

Separately, a coating liquid for forming a protective layer having the following composition was prepared, and the coating liquid was applied and dried on each photosensitive resin layer of each color to form a protective layer having a dry film thickness of 1.5 μm.

Coating solution for protective layer Polyvinyl alcohol 60 g (GL-05, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) Water 970 g Methanol 30 g Four colors consisting of a support, a release layer, a photosensitive resin layer and a protective layer in this order To produce a photosensitive transfer material (negative type colored photosensitive material sheet).

Comparative Example 1 Production of Photosensitive Transfer Material In the same manner as in Example 1 except that silicon dioxide was removed from the release layer-forming coating liquid, a release layer coloring material layer containing an alcohol-soluble polyamide and a photosensitive layer were sequentially formed on a support. A laminated four-color photosensitive transfer material was produced.

Comparative Example 2 Production of Photosensitive Transfer Material A release layer containing an alcohol-soluble polyamide on a support, an alcohol-insoluble barrier layer, and a color were prepared in the same manner as in Example 2 except that silicon dioxide was omitted from the coating liquid for forming a barrier layer. A four-color photosensitive transfer material in which a material layer and a photosensitive layer were sequentially laminated was prepared.

[Comparative Example 3] Production of photosensitive transfer material A release layer containing an alcohol-soluble polyamide on a support, a colorant-containing photosensitive layer, and a protective layer were prepared in the same manner as in Example 3 except that silicon dioxide was omitted from the release layer-forming coating solution. A four-color photosensitive transfer material was prepared in which layers were sequentially laminated.

[Evaluation of photosensitive transfer material]

Four-color photosensitive sheets were image-exposed for 60 seconds with a 1kW ultra-high pressure mercury lamp P-607Fw (manufactured by Dainippon Screen Mfg. Co., Ltd.) using corresponding color separation masks, and then a developer CA-1 for color art (product) Name: 5 from Fuji Photo Film Co., Ltd.
Automatic development (using a Color Art Processor CA-600P: Fuji Photo Film Co., Ltd.) was performed at 31 ° C. for 34 seconds with a double dilution. In this way, a four-color color proofing sheet faithfully reproducing the color separation mask was obtained.

Separately, coating solutions of the following Formula I (for forming the first layer) and Formula II (for forming the second layer) were prepared on a biaxially stretched polyethylene terephthalate film having a thickness of 100 μm, and the dry film thickness was 1.0 μm, respectively. An image-receiving sheet was formed by sequentially coating and forming the film having a thickness of 20 μm.

Formula (I) Polyvinyl chloride 10.0 g (Zeon 25, manufactured by Nippon Zeon Co., Ltd.) Methyl ethyl ketone 240 g Cyclohexanone 60 g Formulation (II) Methyl methacrylate polymer 90 g (Average molecular weight: 100000, manufactured by Wako Pure Chemical Industries, Ltd.) Pentaerythritol tetra Acrylate 90g Michler's Ketone 0.51g Benzophenone 3.18g Paramethoxyphenol 0.09g Methylethylketone 220g Next, first stack the black color proofing sheet so that the image side is in contact with the film surface of the image receiving sheet material, and then use the Color Art Transfer Machine CA-600T ( Lamination was performed using Fuji Photo Film Co., Ltd., after which the support of the color proofing sheet was peeled off, and the black image was transferred onto the image receiving sheet. Then, the remaining three color proofing sheets were transferred while aligning the positions to obtain an image receiving sheet on which four-color halftone images were transferred and formed.

Next, the image-receiving sheet on which the four-color image has been transferred and the art paper (final support) are overlaid and laminated by the transfer machine,
After that, the support of the image receiving sheet material was peeled off to form a color image on the art paper.

Table 2 shows the evaluation results of the easiness of registration of the final image and the four-color image created through these steps.

Claims (2)

[Claims] 1. A photosensitive transfer material comprising a temporary support, a release layer mainly composed of an organic polymer and an image forming layer, wherein the release layer contains a matting agent. 2. The photosensitive transfer material according to claim 1, wherein the matting agent has a particle size of 0.005 to 10 μm.