JPH0996902A - Photosensitive colored image forming material and multicolor image forming method - Google Patents

Abstract

(57) [Summary] (Correction) [Problem] Performing development processing or not performing development processing,
Provided are a photosensitive colored image forming material that forms a stable dye image by utilizing the difference in adhesiveness during transfer, and a multicolor image forming method. SOLUTION: Wavelengths (λp-30) to (λp + 30) of constituent substances other than the photosensitive substance contained in the photosensitive colored image forming layer.
The ratio of the average transmission absorbance Dp in the range of nm [λp is the maximum transmission absorbance wavelength of the photosensitive substance] and the average transmission absorbance Dvis in the wavelength range of 400 to 760 nm, Dp / Dvis is 1.2 or less, and the constituent substances other than the photosensitive substance Maximum transmission absorbance in the wavelength range of 400 to 760 nm
The ratio of Dvis (MAX) to the minimum transmission absorbance Dvis (MIN), Dvis (MA
A multicolor image is formed by transferring using a photosensitive colored image forming material having X) / Dvis (MIN) of 10 or less.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photosensitive colored image forming material and a multicolor image forming method. More specifically, the present invention relates to a photosensitive colored image forming material and a multicolor image forming method that are less likely to cause transfer defects or background stains (non-image area stains) during image transfer and have improved stability.

[0002]

BACKGROUND OF THE INVENTION In order to confirm whether or not a plate-made product has a quality desired by a customer, a trial printing is performed before a main printing. This is called proof printing. A proof machine is used for proof printing, but it takes time, labor and time to make a proof.

In recent years, a color sheet for color proofing (also called a color proof) has been used in order to save the labor, time, and cost of proofing, which is performed as a pre-step of main printing in multicolor printing. Examples of a method for forming a multicolor image using a color sheet for color proofing include, for example, the method described in JP-A-61-189535 and JP-A-3-48248.
The method described in Japanese Patent Publication can be used. Heretofore, it has been common to use a carbon black pigment as a colorant for the black color sensitive material used in these chemical proofs because of its excellent price, coloring power, hue and the like.

However, the black color photosensitive material using the carbon black pigment as a colorant has lower development stability as compared with the other color photosensitive materials, and if the composition of the developer deviates from the standard state, the developability is low. There is a problem in that it deteriorates and that sufficient care must be taken in handling the light-sensitive material.

Further, a method and material for forming an image by utilizing the difference in tackiness between the exposed area and the unexposed area without using a developing solution are disclosed in JP-A-63-147154 and JP-A-63-147162, Japanese Patent Laid-Open No. 2-5805
No. 8, JP-A-4-177253, etc., as a black sensitive material, a carbon black pigment is used, and a sensitive material using these carbon black pigments is used as a sensitive material of another color. In comparison, there is a problem in that it is easily affected by changes in transfer conditions during image transfer, transfer defects and background stains (non-image area stains) easily occur due to changes in transfer conditions, and a stable transferred image cannot always be obtained. It was

[0006]

OBJECTS OF THE INVENTION Accordingly, an object of the present invention is to provide a photosensitive colored image forming material having a photosensitive colored image forming layer which is subjected to a development treatment to form an image, which gives excellent development stability and stability. In addition, a photosensitive colored image forming material having a photosensitive colored image forming layer which forms an image by utilizing the difference in adhesiveness at the time of transfer without performing development processing The purpose is to make it possible to obtain a stable dye image by making it less susceptible to changes in transfer conditions during image transfer.

[0007]

The above objects of the present invention are as follows: (1) A photosensitive colored image forming layer is coated on a support, and the photosensitive colored image forming layer can be transferred imagewise. Wavelength of a constituent substance other than the photosensitive substance contained in the photosensitive colored image forming layer (λp-30) nm to (λp + 30) nm (where λp is the photosensitivity contained in the photosensitive colored image forming layer). The ratio of the average transmission absorbance Dp in the range of the maximum transmission absorbance wavelength (nm) in the wavelength range of 300 nm to 400 nm and the average transmission absorbance Dvis in the wavelength range of 400 nm to 760 nm, Dp / Dvis is 1.2 or less. And a photosensitive colored image forming material. (2) Photosensitive coloring The photosensitive coloring according to (1) above, wherein the constituent substances other than the photosensitive substance contained in the image forming layer have an average transmission absorbance Dvis of 0.50 or more in the wavelength range of 400 nm to 760 nm. Image forming material. (3) Maximum transmission absorbance Dvis (MAX) and minimum transmission absorbance Dvis of constituent substances other than the photosensitive substance contained in the photosensitive colored image forming layer in the wavelength range of 400 nm to 760 nm
(MIN) ratio, Dvis (MAX) / Dvis (MI
N) is 10 or less, The photosensitive colored image-forming material as described in (1) or (2) above. (4) In the 100% image area of the final transfer image,

[0008]

[Equation 2] Is 10 or less, The photosensitive colored image forming material as described in any one of (1) to (3) above. (5) Wavelength (λp-30) nm to (λp + 30) nm of the colorant contained in the photosensitive colored image forming layer [λp is the maximum transmission absorbance wavelength (nm) of the photosensitive substance contained in the photosensitive colored image forming layer. ] Average transmission absorbance Dp 'and wavelength 40
The photosensitive colored image-forming material as described in any of (1) to (4) above, wherein the ratio of the average transmission absorbance Dvis' in the range of 0 to 760 nm, Dp '/ Dvis' is 1.2 or less. (6) A photosensitive colored image forming layer having a release layer and / or a releasing cushion layer capable of peeling the photosensitive colored image forming layer between the support and the photosensitive colored image forming layer. The photosensitive colored image-forming material as described in any one of (1) to (5) above, which is capable of being transferred imagewise. (7) The photosensitive colored image forming material as described in any one of (1) to (6) above, wherein the photosensitive colored image forming layer is composed of a single layer. (8) The photosensitive colored image forming layer according to any one of (1) to (7) above, which is a photosensitive colored image forming layer containing a carbon black pigment as a colorant. Image forming material. (9) In a method of forming a multicolor image by transferring using a plurality of colored image forming materials, at least one photosensitive colored image forming material described in any one of (1) to (8) above is used. A multicolor image forming method characterized by the above. (10) The above-mentioned (9), wherein image exposure is performed from the back surface of the surface on which the photosensitive colored image forming layer is applied, and the image is transferred.
The multicolor image forming method described. (11) In a method of forming a multicolor image having at least four colors of yellow, magenta, cyan and black by transferring using a colored image forming material of at least four colors of yellow, magenta, cyan and black, a black image The multicolor image forming method described in (9) or (10) above, wherein the photosensitive colored image forming material described in any of (1) to (8) is used as a forming material. Achieved by

The present invention will be described in detail below.

First, the photosensitive colored image forming material of the present invention will be described.

The colored image-forming material of the present invention is an image-forming method in which an image is recorded on the colored image-forming material to form an image and then the image is transferred to a final support (eg, printing paper) to obtain a transferred image. Can be used for.

The support used in the photosensitive colored image-forming material of the present invention may be made of any material.

The support used in the present invention is preferably a transparent support. As the transparent support, a polyester film, particularly a biaxially stretched polyethylene terephthalate film is preferable in terms of strength, dimensional stability against water and heat, economical efficiency and the like. In addition, acetate films, polyvinyl chloride films, polyethylene films, polypropylene films and the like can be preferably used.

The thickness of the support is not particularly limited, but from the viewpoint of workability and economy, it is preferably about 10 to 150 μm.

As an aspect of forming an image using the colored image forming material of the present invention, for example, only the image portion of the image formed on the colored image forming material is directly or indirectly through an image receiving sheet material or the like. Aspect of transferring and laminating on the final support Aspect of transferring and laminating a part of the colored image-forming layer imagewise by utilizing the difference in adhesiveness between the exposed and unexposed areas of the surface of the colored image-forming material. You can

In the case of the above mode, the image formed on the colored image forming material is efficiently transferred onto the material to be transferred (final support, image receiving sheet, etc.), and the image from the support is transferred during image transfer. In order to facilitate peeling, on the surface of the support,
Forming a release layer by performing a release treatment using an appropriate release material, forming a release layer made of a resin having releasability on a support, or unevenness of a transfer material having releasability A releasable cushion layer made of a resin capable of following the above is formed.

These layers may have a single-layer structure composed of one layer or a multi-layer structure composed of two or more layers.

As the releasing material used in the releasing treatment, for example, silicone resin, fluororesin, fluorosurfactant, polyolefin, polyamide, etc. can be used, and the resin used for forming the releasing layer is used. For example, alcohol-soluble polyamide, alcohol-soluble nylon, polyacrylate, copolymer of methyl methacrylate and acrylate, polyvinyl chloride, methyl cellulose, polyvinyl butyral, or a mixture thereof can be used. The resin used to form the releasable cushion layer preferably has a VICAT softening temperature of -30 to 150 ° C. Specifically, polyethylene, polyolefins such as ethylene-butene copolymer, ethylene-vinyl acetate copolymer, ethylene-methyl methacrylate copolymer, ethylene-ethylene copolymer such as ethylene-ethyl acrylate copolymer, Examples thereof include polyvinyl acetate, vinyl acetate copolymer, and ionomer resin.

The thickness of the release layer or the release cushion layer is
The range of 0.01 to 50 μm is preferable.

The method for providing the release layer or the release cushion layer on the support includes (1) a solution prepared by dissolving a resin such as polyvinyl chloride capable of forming the release layer in an organic solvent. After being coated on the surface and dried by hot air or heating, the cover sheets are superposed and pressure-bonded under pressure to laminate. (So-called dry laminating method) (2) A resin such as an ethylene-vinyl acetate copolymer capable of forming a release layer is heated and melted, and a doctor blade method or a roll is applied on a support while maintaining a molten state. After coating by a coating method, a gravure method, a reverse roll method, etc., a cover sheet is immediately laminated, and if necessary, heated at a high temperature and then cooled to be laminated. (So-called hot melt laminating method) (3) A resin such as polyethylene capable of forming a release layer is melted and extruded onto a support by an extruder, and a cover sheet is pressure-bonded and laminated while in a molten state. . (So-called extrusion lamination method) (4) When a resin such as polypropylene or polyethylene capable of forming a release layer on a support is extruded, a plurality of extruders are used to form a layer composed of two or more kinds of resins. While still in the molten state, the cover sheet is pressure-bonded and laminated. (So-called co-extrusion method) (5) A solution in which a resin such as polyvinyl acetate capable of forming a release layer is dissolved in an organic solvent or water is applied on a support and dried by hot air or heating. (So-called solution coating method) and the like, but the release layer may be formed by a method other than the above. The method for forming the release layer is appropriately selected depending on the substance used. When the release layer is formed by using the cover sheet, the cover sheet is peeled and removed before or during the coating of the next layer.

The photosensitive colored image forming layer of the present invention contains at least a photosensitive substance and a colorant which are photosensitive to actinic rays.

The photosensitive colored image forming layer provided on the support may have a single-layer structure or a multilayer structure of two or more layers. In the case of a multi-layered structure having two or more layers, at least one layer may have an image forming ability. Further, the colorant may be contained in at least one layer.

The photosensitive material in the present invention has a wavelength of 300 n.
It refers to a substance which is photoreactive with respect to a light ray in the range of m to 400 nm and has the ability to cause a change in properties capable of forming an image in the colored image forming material by the photoreaction. As these photosensitive substances, both positive type and negative type can be used.

When the photosensitive colored image forming layer is formed of a positive photosensitive composition, the positive photosensitive composition may be o
-It is preferable to use a photosensitive composition containing a quinonediazide compound. As the o-quinonediazide compound used in the photosensitive composition, any compound can be used as long as it can function as a photosensitizer.

Specifically, for example, 1,2-benzoquinonediazide-4-sulfonyl chloride, 1,2-naphthoquinonediazide-4-sulfonyl chloride, 1,2
-Naphthoquinonediazide-5-sulfonyl chloride,
A compound obtained by condensing 1,2-naphthoquinonediazide-6-sulfonyl chloride with a compound containing a hydroxyl group and / or an amino group is preferably used.

Examples of the hydroxyl group-containing compound include:
Examples thereof include trihydroxybenzophenone, dihydroxyanthraquinone, bisphenol A, phenol novolac resin, resorcin benzaldehyde condensation resin, and pyrogallol acetone condensation resin. Examples of the amino group-containing compound include aniline, p-aminodiphenylamine, p-aminobenzophenone, 4,4′-
Diaminodiphenylamine, 4,4'-diaminobenzophenone and the like can be mentioned.

With respect to the o-quinonediazide compound, further reference is made to Jay. "Light Sensitive System" by J. Kosar (New York City, John Wiley and Sons, 1965),
Also, those described in “Photosensitive Polymer” by Nagamatsu and Inui (Kodansha, 1977) can be used.

When the photosensitive colored image forming layer is formed of a negative photosensitive composition, a photopolymerizable photosensitive composition is preferably used as the negative photosensitive composition. The photopolymerizable compound used in the photopolymerizable photosensitive composition may be any of those generally used.

As the photopolymerizable compound, for example, at least one compound arbitrarily selected from the compound group consisting of acrylic acid, methacrylic acid, acrylic acid ester and methacrylic acid ester can be used. Specifically, for example, ethylene glycol diacrylate, glycerin triacrylate, ethylene glycol dimethacrylate, 1,3-propanediol dimethacrylate, 1,2,4-butanetriol trimethacrylate, polyethylene glycol dimethacrylate, trimethylolethane. Triacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol polyacrylate, 1,3-propanediol diacrylate,
Examples thereof include 1,5-pentanediol dimethacrylate, polyethylene glycol bisacrylate, and bismethacrylate, but are not limited thereto.

The negative photosensitive composition can contain a photopolymerization initiator. The photopolymerization initiator that can be used is arbitrary, but those having little absorption in the visible region are preferable, and examples of such a photopolymerization initiator include benzophenone, Michler's ketone, 4,4′-bis (dimethylamino) benzophenone, and the like. Aromatic ketones such as 4,4-bis (diethylamino) benzophenone, 4-methoxy-4'-dimethylaminobenzophenone, 2-ethylanthraquinone, phenanthraquinone and other aromatic ketones; benzoin, benzoin methyl ether,
Benzoin ethers such as benzoin ethyl ether and benzoin phenyl ether; methylbenzoin, ethylbenzoin and other benzoins; 2-
(O-Chlorophenyl) -4,5-diphenylimidazole duplex, 2- (o-chlorophenyl) -4,5-
(M-Methoxyphenyl) imidazole duplex, 2-
(O-Fluorophenyl) -4,5-diphenylimidazole double body, 2- (o-methoxyphenyl) -4,5
-Diphenylimidazole duplex, 2- (p-methoxyphenyl) -4,5-diphenylimidazole duplex,
2,4-di (p-methoxyphenyl) -5-phenylimidazole double body, 2- (2,4-dimethoxyphenyl) -4,5-diphenylimidazole double body, 2-
(P-Methylmercaptophenyl) -4,5-diphenylimidazole duplex, and US Patent 3,479,185, British Patent 1,047,569, US Patent 3,784,557.
The 2,4,5-triacrylimidazole double body and the like described in the specification can be mentioned, but the photopolymerization initiator that can be used is not limited to these.

As other photopolymerization initiators, thioxanthones such as 2,4-diethylthioxanthone can be used. In this case, a compound known as a photopolymerization accelerator, for example, isoamyl p-dimethylaminobenzoate, ethyl p-dimethylaminobenzoate, N-methyldiethanolamine, bisdiethylaminobenzophenone and the like can be used.

As the colorant used in the photosensitive colored image forming layer, dyes and pigments are used. When the photosensitive colored image-forming material of the present invention is used for color proofing in printing, a normal color normally required in printing, that is, a colorant having a color tone corresponding to yellow, magenta, cyan and black is used. The colorant used in the present invention is not limited to these, and metal powders, white pigments, fluorescent pigments and the like may also be used.

The dyes and pigments used when the photosensitive colored image-forming material of the present invention is applied to a color proof are shown below, but the dyes and pigments used in the photosensitive colored image-forming material of the present invention are not limited thereto. Not what is done,
In addition, many pigments and dyes known in the art can be used.

In the following, CI means color index. Victoria Pure Blue (CI 42595) Auramin (CI 41000) Catillon Brilliant Flavin (CI Basic 13) Rhodamine 6GCP (CI 45160) Rhodamine B (CI 45170) Safranin OK70: 100 (CI 50240) Erioglaucin X (CI 42080) First Black HB (CI 26150) No.1201 Rionol Yellow (CI 21090) Rionol Yellow GRO (CI 21090) Shimla Fast Yellow 8GF (CI 21105) Benzidine Yellow 4T-564D (CI 21095) Shimla Fast Red 4015 (CI 12355) Rio Nord Red 7B4401 (CI 15830) Fastgen Blue TGR-L (CI 74160) Rio Nor Blue SM (CI 26150) Mitsubishi Carbon Black MA-100 Mitsubishi Carbon Black # 30, # 40, # 50 Coloring in the photosensitive colored image forming layer The amount of agent used depends on the target optical density and the photosensitive colored image. It can be determined by a method known to those skilled in the art in consideration of the removal performance of the forming layer with the developer. In the usual case, it is suitable to add 0.5% to 75% (by weight) of the dye and 5% to 90% (by weight) of the pigment.

The film thickness of the photosensitive colored image forming layer can be determined by a method known to those skilled in the art according to the target optical density, the kind of the coloring agent used and the content thereof. Normally, the thickness of the photosensitive colored image forming layer is 0.1
thickness obtained by a coating weight in the range of g / m ² ~5g / m ² is preferred.

The photosensitive composition of the present invention preferably contains a polymer compound and a synthetic resin. As these polymer compounds and synthetic resins, polymer compounds and synthetic resins usually used in photosensitive compositions can be used, but the carboxylic acid vinyl ester structural unit represented by the following chemical formula 1 is used in the molecular structure. It is preferable to use the polymer compound described in 1.

[0037]

Embedded image [In the formula, R represents an alkyl group with or without a substituent. The polymer compound having the carboxylic acid vinyl ester structural unit represented by the chemical formula 1 in the molecular structure may be a polymer compound having any structure, but the carboxylic acid vinyl ester represented by the chemical formula 1 may be used. As the carboxylic acid vinyl ester monomer used for introducing the structural unit into the molecular structure, the carboxylic acid vinyl ester monomer exemplified below is preferable.

1 vinyl acetate CH ₃ COOCH = CH ₂ 2 vinyl propionate CH ₃ CH ₂ COOCH = CH ₂ 3 vinyl butyrate CH ₃ (CH ₂ ) ₂ COOCH = CH ₂ 4 vinyl pivalate (CH ₃ ) ₃ CCOOCH = CH ₂ 5 Vinyl caproate CH ₃ (CH ₂ ) ₄ COOCH = CH ₂ 6 Vinyl caprylate CH ₃ (CH ₂ ) ₆ COOCH = CH ₂ 7 Vinyl caprate CH ₃ (CH ₂ ) ₈ COOCH = CH ₂ 8 Vinyl laurate CH ₃ (CH ₂ ) ₁₀ COOCH = CH ₂ 9 Vinyl myristate CH ₃ (CH ₂ ) ₁₂ COOCH = CH ₂ 10 Vinyl palmitate CH ₃ (CH ₂ ) ₁₄ COOCH = CH ₂ 11 Vinyl stearate CH ₃ (CH ₂ ) ₁₆ COOCH = CH ₂ 12 vinyl versatate

[0039]

Embedded image [In the formula, R ¹ and R ² represent an alkyl group, and the sum of the carbon atoms thereof is 7. The polymer compound having the carboxylic acid vinyl ester structural unit represented by the chemical formula 1 in the molecular structure may be a polymer obtained by polymerizing one kind of carboxylic acid vinyl ester alone, or two or more kinds of carboxylic acid vinyl ester. It may be a copolymerized polymer or a polymer obtained by copolymerizing a carboxylic acid vinyl ester and another monomer copolymerizable therewith at an arbitrary component ratio.

Other monomers copolymerizable with the vinyl ester of carboxylic acid include, for example, ethylenically unsaturated olefins such as ethylene, propylene, isobutylene, butadiene and isoprene; for example, styrene, α-methylstyrene, Styrenes such as p-methylstyrene and p-chlorostyrene; for example, acrylic acids such as acrylic acid and methacrylic acid; for example, unsaturated aliphatic dicarboxylic acids such as itaconic acid, maleic acid and maleic anhydride; for example, maleic acid Diesters of unsaturated dicarboxylic acids such as diethyl, dibutyl maleate, di-2-ethylhexyl maleate, dibutyl fumarate, di-2-ethylhexyl fumarate; for example, methyl acrylate, ethyl acrylate, n-butyl acrylate. , Isobutyl acrylate, phenyl acrylate , Alpha-chloro methyl acrylate, methyl methacrylate, and ethyl methacrylate alpha-
Methylene aliphatic monocarboxylic acid esters; for example, nitriles such as acrylonitrile and methacrylonitrile; for example, amides such as acrylamide; for example, acrylanilide, p-chloroacrylanilide, m-nitroacrylanilide, m-methoxyacrylanilide. Anilides such as; vinyl ethers such as methyl vinyl ether, ethyl vinyl ether, isobutyl vinyl ether, β-chloroethyl vinyl ether; vinyl chloride; vinylidene chloride; vinylidene cyanide; for example, 1-methyl-1-methoxyethylene, 1,
Ethylene derivatives such as 1-dimethoxyethylene, 1,2-dimethoxyethylene, 1,1-dimethoxycarbonylethylene, 1-methyl-1-nitroethylene; for example, N-vinylpyrrole, N-vinylcarbazole, N
-N-vinyl compounds such as vinylindole, N-vinylpyrrolidene, and N-vinylpyrrolidone, and other vinyl-based monomers.

Particularly preferred as the polymer compound used in the present invention is a polymer compound having a structural unit derived from vinyl acetate in the molecular structure. Among them, polymer compounds having 40 to 95% by weight of a structural unit derived from vinyl acetate are preferable and have a number average molecular weight (Mn) of 1,000 to 60,00.
Those having a weight average molecular weight (Mw) of 500 to 150,000 are preferred.

More preferably, it has a structural unit derived from vinyl acetate (particularly one having 40 to 95% by weight of a structural unit derived from vinyl acetate) and a structural unit derived from a carboxylic acid vinyl ester having a longer chain than vinyl acetate. Polymer compounds are preferable, and particularly, the number average molecular weight (Mn) is 2,000 to 6
Those having a weight average molecular weight (Mw) of 10,000 and 10,000 to 150,000 are preferable.

When obtaining the above-mentioned polymer compound, any comonomer can be used as a comonomer,
These comonomers can be arbitrarily selected from the above-exemplified monomers.

The polymer compounds that can be used in the present invention will be listed below by showing their monomer components. However, needless to say, the polymer compound that can be used in the present invention is not limited to the polymer compounds exemplified below. 1 vinyl acetate-ethylene 2 vinyl acetate-styrene 3 vinyl acetate-crotonic acid 4 vinyl acetate-maleic acid 5 vinyl acetate-2-ethylhexyl acrylate 6 vinyl acetate-di-2-ethylhexyl maleate 7 vinyl acetate-methyl vinyl ether 8 vinyl acetate -Vinyl chloride 9 vinyl acetate-N-vinyl pyrrolidone 10 vinyl acetate-vinyl propionate 11 vinyl acetate-vinyl pivalate 12 vinyl acetate-vinyl versatic acid 13 vinyl acetate-vinyl laurate 14 vinyl acetate-vinyl stearate 15 vinyl acetate- Vinyl versatate-ethylene 16 Vinyl acetate-vinyl versatate-2-ethylhexyl acrylate 17 Vinyl acetate-vinyl versatate-vinyl laurate 18 Vinyl acetate-versatiate vinyl L-Crotonic acid 19 Vinyl propionate-Vinyl versaticate 20 Vinyl propionate-Vinyl versaticate-Crotonic acid 21 Pivalic acid-Vinyl stearate-Maleic acid When obtaining the photosensitive colored image forming layer of the present invention, a photosensitive composition If necessary, a plasticizer, a coatability improver and the like can be further added therein.

As the plasticizer which can be used, various well-known low molecular weight compounds such as phthalic acid esters,
Polyphenyl phosphates, maleic acid esters;
Examples of the coatability improver include surfactants such as fluorine-based surfactants and nonionic surfactants represented by ethyl cellulose polyalkylene ether.

The photosensitive colored image-forming layer of the present invention can be formed by applying a coating solution prepared by dissolving or dispersing a photosensitive composition comprising each of these components in a solvent onto a support and drying it. it can.

Examples of the solvent that can be used when the photosensitive composition is dissolved include, for example, methyl cellosolve, methyl cellosolve acetate, ethyl cellosolve, ethyl cellosolve acetate, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol dimethyl ether, diethylene glycol methyl ethyl. Ether, diethylene glycol diethyl ether, diethylene glycol monoisopropyl ether, propylene glycol, propylene glycol monoethyl ether acetate, propylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether,
Dipropylene glycol monomethyl ether, dipropylene glycol dimethyl ether, dipropylene glycol methyl ethyl ether, propylene glycol monomethyl ether acetate, 3-methoxy-1-butanol, ethyl formate, propyl formate, butyl formate, amyl formate, methyl acetate, ethyl acetate, Propyl acetate, butyl acetate, methyl propionate, ethyl propionate, methyl butyrate, ethyl butyrate, methyl lactate, ethyl lactate, dimethylformamide, dimethyl sulfoxide, dioxane,
Acetone, methyl ethyl ketone, cyclohexanone, methyl cyclohexanone, diacetone alcohol, acetylacetone, γ-butyrolactone, diethyl ketone, 4
-Hydroxy-2-butanone, methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol, t-butyl alcohol and the like can be mentioned. These solvents can be used alone or in combination of two or more.

The coating method used for coating the surface of the support with the photosensitive composition is a conventionally known method, for example, spin coating, wire bar coating, dip coating, air knife coating, spray coating, air spray coating, Methods such as electrostatic air spray coating, roll coating, blade coating and curtain coating are used.

A protective layer may be formed on the colored image-forming material of the present invention. Any known protective layer may be used as the protective layer, but a protective layer that dissolves or disperses in a developing solution during development is preferable. Specific examples of the material for forming the protective layer include polyvinyl alcohol and celluloses. The gas permeability of the protective layer is appropriately selected according to the type of photosensitive substance used.
For example, in the case of using a photosensitive composition that generates a gas during exposure, such as o-quinonediazide, it is preferable to use a material that provides a protective layer having good gas permeability in order to dissipate the generated gas. When a photosensitive composition in which image formation is inhibited by oxygen in the air, such as a polymerizable photosensitive composition, is used, it is preferable to use a material that provides a protective layer having low gas permeability.

The film thickness of the protective layer is arbitrary, but considering the effect of the protective layer, the influence on the developing solution, etc., it is preferably about 0.01 to 5 μm, and more preferably about 0.03 to 1 μm.

The protective layer can be formed by using a film sheet which is peeled and removed before or during use. Examples of these film sheets include a polyethylene film, a polypropylene film, and a polyethylene terephthalate film. The preferable thickness of the film varies depending on the material of the film used, but from the viewpoint of workability and economy, it is preferably about 5 to 100 μm.

The light-sensitive colored image forming material of the present invention is a material other than the light-sensitive material contained in the light-sensitive colored image forming layer, where λp is the maximum transmission absorption wavelength of the light-sensitive material contained in the light-sensitive colored image forming layer. (Λp-30) nm of the constituent substances of
Average transmission absorbance Dp in the range of (λp + 30) nm and average transmission absorbance Dvis in the wavelength range of 400 nm to 760 nm
It is necessary that Dp / Dvis is 1.2 or less.

In the present invention, λp is a polyethylene terephthalate film (T-100G, manufactured by DIAFOIL-Hoechst Co., Ltd.), and the composition obtained by removing the colorant from the photosensitive colored image forming layer composition is dried. Samples were applied and dried so that the film thickness afterwards would be the same as the amount of various materials per unit area in the photosensitive colored image forming layer,
On the same polyethylene terephthalate film as above, a composition obtained by removing the colorant and the photosensitive substance from the photosensitive colored image forming layer composition, the film thickness after drying per unit area in the photosensitive colored image forming layer The material coated and dried to the same amount as various materials was used as a reference, Hitachi spectrophotometer U-3000 type was used as a spectrophotometer, scan speed = 300 nm / min., Slit width = 2 nm, light source =
(N less than 340 nm = D ₂ lamp / 340 nm or more = WI ramp), sampling interval = 0.5 nm, photomal voltage = automatic control, 300 n of photosensitive material measured under the conditions
It is the wavelength that gives the maximum absorbance in the wavelength range of m to 400 nm. When there are multiple wavelengths that give maximum absorbance, the wavelength closest to 350 nm is
If there are multiple wavelengths closest to nm, the wavelength on the long-wave side is λ
Let p.

In the present invention, Dp is the wavelength (λp) of the constituent substances other than the photosensitive substance contained in the photosensitive colored image forming layer.
The average transmission absorbance in the range of −30) nm to (λp + 30) nm, Dvis is the average transmission absorbance in the wavelength range of 400 nm to 760 nm of the constituent substances other than the photosensitive substance contained in the photosensitive colored image forming layer, and polyethylene terephthalate Film (T-100G, Diafoil-Hoechst Co., Ltd.)
The composition obtained by removing the photosensitive substance from the photosensitive colored image forming layer composition is adjusted so that the film thickness after drying is the same as the amount of various materials per unit area in the photosensitive colored image forming layer. From the transmission absorbance curve of the constituent substances other than the photosensitive substance measured in the same manner as above using the sample coated and dried on the sample and the same polyethylene terephthalate film as the reference above, Dp is (λp-
Dvis is given by arithmetically averaging the absorbance values in the range of 30) nm to (λp + 30) nm, and Dvis is obtained by arithmetically averaging the absorbance values in the range of 400 to 760 nm.

Dp / Dvis is the above Dp and Dvi
It is calculated from s.

In the present invention, it is preferable that Dvis is 0.50 or more because the effects of the present invention can be sufficiently exhibited.

As the colorant used in the photosensitive colored image forming layer of the present invention, 100% image portion was transferred onto a polyethylene terephthalate film having a transmittance of 90% or more in the wavelength region of 400 to 760 nm and exposed over the entire surface. When a sample is referred to as a sample and an untransferred polyethylene terephthalate film is used as a reference, a substance that gives a transmission absorbance of 0.20 or more in a wavelength range of 400 to 760 nm is used. Here, the transmission absorbance of 0.20 or more does not mean the average transmission absorbance, but
It means that it has a transmission absorbance of 0.20 or more in any part of this wavelength range. Specific examples of these colorants include various pigments and dyes described in Color Index. The colorant that can be used does not have to have only the function as a colorant, and may also have the functions of a photopolymerization initiator and a sensitizer. Moreover, these colorants may be used alone or in combination of a plurality of colorants.

In the present invention, the wavelengths (λp-30) to (λp + 30) nm of the colorant contained in the photosensitive colored image forming layer are
Transmission absorbance Dp 'and wavelength 400-760nm in the range of
Ratio of average transmission absorbance Dvis 'in the range of, Dp'
/ Dvis' is preferably 1.2 or less.

The absorbances Dp 'and Dvis' of the colorant are determined by removing the photosensitive substance from the photosensitive colored image forming layer composition on a polyethylene terephthalate film (T-100G, manufactured by DIAFOIL-Hoechst Co., Ltd.). The product was applied and dried so that the film thickness after drying would be the same as the amount of colorant per unit area in the photosensitive colored image forming layer, and as a sample, on the same polyethylene terephthalate film as above. The composition obtained by removing the photosensitive substance and the colorant from the photosensitive colored image forming layer composition is adjusted so that the film thickness after drying becomes the same as the amount of various materials per unit area in the photosensitive colored image forming layer. Dp 'is (λp-30) nm to (λp + 30) from the transmission absorbance curve of the colorant measured in the same manner as above using the coated and dried product as a reference.
By arithmetically averaging the absorbance values in the nm range,
Dvis' is given by arithmetically averaging the absorbance values in the range 400-760 nm.

Dp '/ Dvis' is calculated from the above Dp 'and Dvis'.

In the present invention, the wavelength of the constituent substances other than the photosensitive substance contained in the photosensitive colored image forming layer is 400 n
Maximum transmission absorbance Dvis (MA
X) and the minimum transmission absorbance Dvis (MIN), Dvi
It is preferable that s (MAX) / Dvis (MIN) is 10 or less.

Dvis (MAX) and Dvis (MI
N) is the maximum transmission absorbance Dvis (MAX) and the minimum in the wavelength range of 400 nm to 760 nm from the absorbance curve of the constituent substances other than the photosensitive substance contained in the photosensitive colored image forming layer obtained as described above. Transmission Absorbance Dvis (MI
N) You can ask.

Further, in the present invention, the final transfer image
In 100% image part,

[0064]

(Equation 3) Is preferably 10 or less in order to sufficiently exert the effects of the present invention.

Color value of 100% image area of final transferred image
L_i ^*, A_i ^*, B_i ^*Is Tokubishi Art Paper as the final support
(Made by Mitsubishi Paper Mills, 127.9 g / m² ) Is formed using
The color value of the 100% image part of the final transferred image is set to JIS-Z8729.
According to CIELAB, d-0, Sb, W10, D65,
It can be obtained under the condition of a 2 degree visual field.

[0066]

[Equation 4] The value of is calculated from the values of a _i ^* and b _i ^* obtained above.

The light-sensitive colored image-forming material of the present invention can be used for forming a monochromatic image, but can be preferably used for forming a multicolor image, for example, a full color image. It can be used to create a color proof for color proofing in color printing.

When forming a full-color image, a colored image forming material having four colors of yellow, magenta, cyan and black is used. The photosensitive colored image-forming material of the present invention can be used as a colored image-forming material for forming any color, but usually, only the carbon black pigment is used as a colorant in terms of price, coloring power, hue and the like. By using the colored image-forming material of the present invention for the black-colored image-forming material, which is often present, a larger development stability improving effect and transfer condition stability improving effect can be obtained. It is preferably used as a forming material.

In order to form an image using the photosensitive colored image forming material of the present invention, a conventionally known method can be adopted.

The image formation depends on what kind of photosensitive substance is used in the photosensitive colored image forming material, and for example, color separation is performed on the photosensitive layer side or the support side of the photosensitive colored image forming material of the present invention. An image is formed by adhering a mesh film and exposing the image to form an image. The photosensitive colored image forming layer is adhered to an image receiving material such as art paper or an image receiving sheet material and heated and pressed to transfer the image to the image receiving material. Can be obtained by

A full-color image can be obtained by using four colored image forming materials of yellow, magenta, cyan, and black, exposing using a film having a color-separated halftone image of each color, and sequentially transferring. However, in this case, all of the colored image forming materials of four colors of yellow, magenta, cyan and black, or the colored image forming materials of two or more colors may be used as the photosensitive colored image forming material of the present invention. One color may be used as the photosensitive colored image forming material of the present invention.

For the reason described above, when forming a full-color image, it is preferable to use a colored image forming material having a black color as the photosensitive colored image forming material of the present invention.

The image forming method using the photosensitive colored image forming material of the present invention will be described in more detail below.
The image forming method using the photosensitive colored image forming material of the present invention is not limited by these descriptions.

When the light-sensitive colored image-forming material of the present invention is a light-sensitive colored image-forming material which is developed to form an image, a color is formed on the light-sensitive layer side or the support side of the light-sensitive colored image-forming material. The decomposed mesh film is closely contacted for image exposure, and then development processing is performed to obtain a colored image, and the image surface of the colored image formed by development is closely contacted with an image receiving material such as art paper or an image receiving sheet material. It can be formed by passing between a pair of heated nip rolls under a pressure condition and peeling the photosensitive colored image forming material from the image receiving material.

The developer used for developing the colored image forming material of the present invention is not particularly limited, and any conventionally known developer suitable for each photosensitive substance can be optionally used. Specifically, examples of the developing solution and the developing treatment method used for developing the colored image forming material of the present invention include the developing solution and the developing treatment method described in Japanese Patent Application No. 5-236759.

Further, the photosensitive colored image-forming material of the present invention has a photosensitive colored image-forming layer using a photosensitive substance which is cured by exposure, and an image is formed due to the difference in tackiness between the exposed portion and the unexposed portion. In the case of a photosensitive colored image forming material for forming a, a color separation network film is adhered to the photosensitive layer side or the support side of the photosensitive colored image forming material, and image exposure is performed.
The exposed photosensitive colored image forming layer and the image receiving material such as art paper and image receiving sheet material are brought into close contact with each other, and, for example, they are passed between a pair of heated nip rolls under a pressure condition to remove the image receiving material from the image receiving material. It can be formed by peeling off the photosensitive colored image forming material.

When the photosensitive colored image forming material has a protective layer formed of a film sheet on the photosensitive colored image forming layer, the protective layer is peeled off after imagewise exposure.

[0078]

The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to the description of these examples.

Comparative Example 1 An ethylene-vinyl acetate copolymer resin (EVA) was extruded onto a polyethylene terephthalate film (Lumirror T-60, manufactured by Toray Industries, Inc.) having a thickness of 75 μm by an extrusion laminating method.
FLEX P-1407, vinyl acetate content 14% by weight, MFR
= 15: Mitsui DuPont Polychemical)
A 30 μm-thick releasable cushion layer is formed, and at the same time, a 25 μm-thick polyethylene terephthalate film (T-100G, manufactured by Diafoil-Hoechst Co., Ltd.) is placed on the releasable cushion layer. Lamination was performed to obtain a laminated sheet.

Next, the cover sheet of the above-mentioned laminated sheet is peeled off, and the colored photosensitive layer dispersion liquid having the following composition is applied and dried on the releasable cushion layer so that the film thickness after drying is 1.8 μm. , Positive working type colored image forming material sample having black, cyan, magenta and yellow photosensitive layers, black image forming material sample 1-B, cyan image forming material sample 1-C, magenta image Forming material sample 1-M and yellow image forming material sample 1-Y were prepared.

<< Colored Photosensitive Layer Dispersion Liquid Composition >> <Black Photosensitive Layer Dispersion Liquid Composition> Esterification product of p-cresol novolac resin and naphthoquinone-1,2-diazide-4-sulfonyl chloride 0.616 g Vinyl acetate-versatitic acid Vinyl copolymer (weight ratio 80:20, weight average molecular weight = 50,000, 50% methanol solution) 8.768 g Carbon black MA-100 (manufactured by Mitsubishi Chemical Corporation) 0.70 g Methyl ethyl ketone 35.2 g

<Cyan Photosensitive Layer Dispersion Liquid Composition> Esterification product of p-cresol novolac resin and naphthoquinone-1,2-diazide-4-sulfonyl chloride 0.616 g Vinyl acetate-vinyl versatate copolymer (weight ratio 80 : 20, weight average molecular weight = 50,000, 50% methanol solution) 8.768 g Lionol Blue FG-7330 (manufactured by Toyo Ink Co., Ltd.) 0.55 g methyl ethyl ketone 35.2 g

<Magenta Photosensitive Layer Dispersion Liquid Composition> Esterification product of p-cresol novolac resin and naphthoquinone-1,2-diazide-4-sulfonyl chloride 0.616 g Vinyl acetate-vinyl versatate copolymer (weight ratio 80 : 20, weight average molecular weight = 50,000, 50% methanol solution) 8.768 g Lionol Red 6BFG-4219X (manufactured by Toyo Ink Co., Ltd.) 0.68 g Methyl ethyl ketone 35.2 g

<Yellow Photosensitive Layer Dispersion Liquid Composition> Esterification product of p-cresol novolac resin and naphthoquinone-1,2-diazide-4-sulfonyl chloride 0.616 g Vinyl acetate-vinyl versatate copolymer (weight ratio 80 : 20, weight-average molecular weight = 50,000, 50% methanol solution) 8.768 g Rionol Yellow No.1206 (manufactured by Toyo Ink Co., Ltd.) 0.68 g Methyl ethyl ketone 35.2 g Dispersion of the colored photosensitive layer dispersion liquid is 5 kgf using a valve homogenizer. It was carried out by passing under the condition of / cm ² .

<Maximum Transmission Absorbance Wavelength (λp) of Photosensitive Material in Wavelength Range of 300 nm to 400 nm> A coating solution obtained by removing carbon black MA-100 from the composition of the black photosensitive layer dispersion described above was used as a polyethylene terephthalate film having a thickness of 25 μm. (T-100G, manufactured by DIAFOIL-Hoechst Co., Ltd.) was coated and dried so that the film thickness after drying was 1.8 μm, and sample A
It was created.

Using the sample A as a sample, carbon black MA-100 and p-cresol novolac resin and naphthoquinone-1,2 were prepared from the composition of the black photosensitive layer dispersion.
-The coating liquid from which the esterification product (photosensitive substance) with diazide-4-sulfonic acid chloride was removed was dried on a polyethylene terephthalate film (T-100G, manufactured by DIAFOIL-Hoechst Co., Ltd.) having a thickness of 25 μm. Using Hitachi spectrophotometer U-3000 as a reference, the sample obtained by coating and drying to obtain a film thickness of 1.58 μm, scan speed = 300 nm / min., Slit width = 2 nm, light source = (less than 340 nm = D ₂ lamp / 340 nm or more = WI lamp), sampling interval = 0.5 nm, Photomal voltage = automatic control, the transmission absorbance of the photosensitive substance is measured under the conditions of the measuring device, and the measured wavelength is in the light wavelength range of 300 to 400 nm. When the maximum transmission absorbance wavelength (λp) of the photosensitive substance contained in the photosensitive colored image forming layer is calculated, the maximum transmission absorbance wavelength (λp) of the photosensitive substance is
It was 379 nm.

<(Dp), (Dvis), (Dp / Dvi) of the constituent substances other than the photosensitive substance of the black photosensitive layer
s), (Dvis (MAX)), (Dvis (MI
N)), (Dvis (MAX) / Dvis (MI
N))> A coating solution obtained by removing the esterification product of p-cresol novolac resin and naphthoquinone-1,2-diazide-4-sulfonic acid chloride from the composition of the black photosensitive layer dispersion described above is prepared as a 25 μm thick polyethylene terephthalate film ( T-100G, Dia foil-Hoechst Co., Ltd.)
Sample B was prepared by coating and drying so that the coating amount of each material per unit area was the same as the coating amount of the photosensitive layer of the colored image forming material sample 1-B. The sample B was used as a sample, the polyethylene terephthalate film having a thickness of 25 μm used for the preparation of the sample B was used as a reference, and the transmission absorbance of constituent substances other than the photosensitive substance was measured under the same measuring machine conditions as described above, and Wavelength (λp-30) nm to (λp + 30) of constituent substances other than photosensitive substances contained in the colored image forming layer
Average transmission absorbance Dp in the range of nm, wavelength 400 nm to 760
Average transmission absorbance Dvis and Dp / D in the range of nm
When vis was calculated, Dp (arithmetic mean of absorbance values)
Is 1.03, Dvis (arithmetic mean of absorbance values) is 0.75, D
p / Dvis was 1.37.

Further, the ratio of the maximum transmission absorbance Dvis (MAX) to the minimum transmission absorbance Dvis (MIN) of the constituent substances other than the photosensitive substance contained in the photosensitive colored image forming layer in the wavelength range of 400 nm to 760 nm, Dvis (MAX ) / Dv
When is (MIN) is calculated, Dvis (MAX) /
Dvis (MIN) was 1.72.

<(D of the colorant of the black photosensitive layer)
p ′) and (Dvis ′)> A coating solution obtained by removing the esterification product of p-cresol novolac resin and naphthoquinone-1,2-diazide-4-sulfonic acid chloride from the composition of the black photosensitive layer dispersion described above to a thickness of 25 μm. Polyethylene terephthalate film (T-100G, manufactured by DIAFOIL-Hoechst Co., Ltd.) has a coating amount of carbon black MA-100 per unit area of the colored image forming material sample 1-B.
Sample C was prepared by coating and drying so that the coating amount was the same as that of the photosensitive layer.

Using the sample C as a sample, an ester of carbon black MA-100 (colorant) and p-cresol novolac resin and naphthoquinone-1,2-diazide-4-sulfonic acid chloride was prepared from the composition of the black photosensitive layer dispersion. 25 μm thick polyethylene terephthalate film (T-100G, dia foil-
Hoechst Co., Ltd.) so that the coating amount of each material per unit area is the same as the coating amount of the photosensitive layer of the colored image forming material sample 1-B, and the sample is used as a reference. The measurement is performed under the same measuring conditions as described above, and the wavelength of the colorant contained in the photosensitive colored image forming layer is (λp-30) nm ~
Average transmission absorbance Dp ′ in the range of (λp + 30) nm,
Average transmission absorbance Dvi in the wavelength range of 400 nm to 760 nm
When s'and Dp '/ Dvis' were calculated, Dp'
(Arithmetic mean value of absorbance values) was 1.03, Dvis' (arithmetic mean value of absorbance values) was 0.75, and DP '/ Dvis' was 1.37.

Obtained Black Color Image-Forming Material Sample 1-
B, cyan image forming material sample 1-C, magenta image forming material sample 1-M, yellow image forming material sample 1-
On the polyethylene terephthalate film side of Y, a color-separated net positive film of each color is adhered so that the image after development becomes a reverse image when viewed from the photosensitive layer side, and a Konica step tablet after development for each color with a 4kW metal halide lamp. -A
Image exposure (60 seconds) with an exposure amount adjusted to completely remove the third step of
Development was performed by immersing at 30 ° C. for 30 seconds and rubbing with a sponge to obtain a 4-color colored image with the exposed portion removed.

[Developer-1] Konica PS plate developer SDP-1 (manufactured by Konica Corporation) 40 ml Perex NB-L (surfactant: manufactured by Kao Atlas Co., Ltd.) 100 ml distilled water 400 ml

An image surface of a yellow image formed by development and an art paper [Tokubishi Art (127.9 g / m ² ): Mitsubishi Paper Mills Co., Ltd.] were brought into close contact with each other and heated to 80 ° C. After passing between the nip rolls at a speed of 0.5 m / min. Under a pressure of 5 kgf / cm ² , the support was immediately peeled off. The peeling was easily performed at the interface between the releasable cushion layer and the colored image, and the yellow color image was transferred onto the art paper. Then, in the same way, transfer the colored images in the order of magenta, cyan, and black, and use the 4kW metal halide lamp to get 50cm.
The entire surface was exposed for about 120 seconds from the distance of 1 to prepare a proofing image A in which images of four colors were transferred onto art paper.

For the black solid image portion of the obtained proofing image A, the color value (L _i ^* , a _i ^* ,
b _i ^*) with [spectrocolorimeter CM-1000 (manufactured by Minolta Camera Co., Ltd.], condition of JIS-Z8722, wherein C, and according to the method b, measured at a wavelength interval 10nm using D ₆₅ standard light source, The calculated lightness index and L ^* , a ^* , b ^* table of the tristimulus values (X, Y, Z) of the XYZ color system based on the 2-degree visual field calculated by the method described in JIS-Z8729. Chromaticity index in the color system], L _i ^* is 11.27,
a _i ^* is 1.96, b _i ^* is 3.70,

[0095]

(Equation 5) Was 4.19.

In the proofing image A, only the image part was transferred on all four colors on the art paper, the non-image part was not transferred, and the occurrence of the background stain was not observed.

For the resulting proofing image A,
The following evaluation methods were used to evaluate the background stain reflection density, image area solid density, shadow area halftone dot reproducibility, and highlight area halftone dot reproducibility. The results obtained are shown in Table 1.

<< Background Soil Reflection Density >> Macbeth Reflection Densitometer R
Relative reflection density of non-image area when the reflection density of art paper is 0.00 using D-918 (visual filter)

<< Solid Density in Image Area >> Macbeth reflection densitometer R
Relative reflection density of solid (image) part when the reflection density of art paper is 0.00 using D-918 (visual filter)

<< Dot reproducibility of shadow part and dot reproducibility of highlight part >> Complete reproduction dot% of dot patch part of UGRA plate control wedge of highlight part and shadow part

As a developing solution, a developing solution obtained by concentrating the above developing solution-1 by 1.4 times, a developing solution concentrated by 1.2 times, and distilled water are used.
Developer diluted 1.2 times, developer diluted 1.4 times with distilled water, developer diluted 1.6 times with distilled water, distilled water
Images of four colors were transferred onto the art paper in the same manner as the above proofing image A was prepared, except that the black color image forming material sample 1-B was developed using a 1.8 times diluted developing solution. Created a proofing image.

With respect to the obtained black color image of each proofing image, the background stain reflection density, image area solid density, shadow area halftone dot reproducibility and highlight area halftone dot reproducibility were evaluated by the above evaluation methods. The results obtained are shown in Table 1.

Example 1 Black image forming material except that a black photosensitive layer dispersion having the following composition was used as the black photosensitive layer dispersion in the preparation of the black image forming material sample 1-B of Comparative Example 1. A black image-forming material sample 2-B was prepared in the same manner as sample 1-B.

<Black Sensitive Layer Dispersion Liquid Composition> Esterification product of p-cresol novolac resin and naphthoquinone-1,2-diazide-4-sulfonyl chloride 0.616 g Vinyl acetate-vinyl versatate copolymer (weight ratio 80: 20, weight average molecular weight = 50,000, 50% methanol solution) 8.768 g Carbon black MA-100 (manufactured by Mitsubishi Chemical Co., Ltd.) 0.40 g Oil Black # 6 (manufactured by Chuo Synthetic Chemical Co., Ltd.) 0.72 g Methyl ethyl ketone 15.0 g Cyclohexanone 20.0 g

The colored photosensitive layer dispersion was dispersed by passing it through a valve homogenizer under the condition of 5 kgf / cm ² .

In the same manner as in Comparative Example 1, λp, Dp, Dvis, Dp / Dv of the above black color image forming material 2-B were obtained.
is, Dvis (MAX) / Dvis (MIN), D
p ', Dvis' and Dp '/ Dvis' were determined. The results obtained are shown in Table 1.

Further, the above black color image forming material sample 2
-B and cyan image forming material sample 1 described in Comparative Example 1-
C, magenta color image forming material sample 1-M and yellow color image forming material sample 1-Y
Proofing image B was obtained.

For the black solid image portion of the obtained proofing image B, in the same manner as in Comparative Example 1, L _i ^* ,
a _i ^* , b _i ^* and

[0109]

(Equation 6) The black image was evaluated for background stain reflection density, image area solid density, shadow halftone dot reproducibility, and highlight halftone dot reproducibility. The results obtained are shown in Table 1.

Using the black color image forming material sample 2-B, the cyan color image forming material sample 1-C described in Comparative Example 1, the magenta color image forming material sample 1-M, and the yellow color image forming material sample 1-Y, A black image forming material sample 2 was prepared in the same manner as in Comparative Example 1 using a concentrated or diluted developer.
-B development is performed to create a proofing image, and with respect to the black image, the background stain reflection density, the image area solid density,
The halftone dot reproducibility in shadow areas and the halftone dot reproducibility in highlight areas were evaluated. The results obtained are shown in Table 1.

In the case of using the black image-forming material sample 2-B, also in the case of using the developing solution prepared by diluting the developing solution-1 by 1.4 times with distilled water, the same as in the case of using the developing solution-1. On the art paper, only the colored image part was transferred, and the non-image part was not transferred. In addition, the occurrence of background stain on the non-image portion was not observed. Further, the obtained proofing image was not so different from the proofing image using the developer-1 in any of yellow, magenta, cyan and black image portions.

Example 2 A black image forming material except that a black photosensitive layer dispersion having the following composition was used as the black photosensitive layer dispersion in the preparation of the black image forming material sample 1-B of Comparative Example 1. A black image-forming material sample 3-B was prepared in the same manner as sample 1-B.

<Black Sensitive Layer Dispersion Liquid Composition> Esterification product of p-cresol novolac resin and naphthoquinone-1,2-diazide-4-sulfonyl chloride 0.616 g Vinyl acetate-vinyl versatate copolymer (weight ratio 80 : 20, weight average molecular weight = 50,000, 50% methanol solution) 8.768 g AIZEN SOT Black-4 (manufactured by Hodogaya Chemical Co., Ltd.) 1.15 g methyl ethyl ketone 15.0 g cyclohexanone 25.5 g

The colored photosensitive layer dispersion was dispersed by passing it through a valve homogenizer under the condition of 5 kgf / cm ² .

In the same manner as in Comparative Example 1, λp, Dp, Dvis, Dp / Dv of the above black color image forming material 3-B were used.
is, Dvis (MAX) / Dvis (MIN), D
p ', Dvis' and Dp '/ Dvis' were determined. Table 2 shows the obtained results.

Further, the above black color image forming material sample 3
-B and cyan image forming material sample 1 described in Comparative Example 1-
C, magenta color image forming material sample 1-M and yellow color image forming material sample 1-Y
Proofing image C was obtained.

For the black solid image portion of the obtained proofing image C, as in Comparative Example 1, L _i ^* ,
a _i ^* , b _i ^* and

[0118]

(Equation 7) The black image was evaluated for background stain reflection density, image area solid density, shadow halftone dot reproducibility, and highlight halftone dot reproducibility. Table 2 shows the obtained results.

Using the black color image forming material sample 3-B, the cyan color image forming material sample 1-C described in Comparative Example 1, the magenta color image forming material sample 1-M, and the yellow color image forming material sample 1-Y, Black image-forming material sample 3 using a concentrated or diluted developer in the same manner as in Comparative Example 1.
-B development is performed to create a proofing image, and with respect to the black image, the background stain reflection density, the image area solid density,
The halftone dot reproducibility in shadow areas and the halftone dot reproducibility in highlight areas were evaluated. Table 2 shows the obtained results.

In the case of using the black color image-forming material sample 3-B, the same as in the case of using the developing solution-1 when the developing solution-1 diluted 1.4 times with distilled water is used. On the art paper, only the colored image part was transferred, and the non-image part was not transferred. In addition, the occurrence of background stain on the non-image portion was not observed. Further, the obtained proofing image was not so different from the proofing image using the developer-1 in any of yellow, magenta, cyan and black image portions.

Example 3 Black image forming material except that a black photosensitive layer dispersion having the following composition was used as the black photosensitive layer dispersion in the preparation of the black image forming material sample 1-B of Comparative Example 1. A black image-forming material sample 4-B was prepared in the same manner as sample 1-B.

<Composition of Black Photosensitive Dispersion Liquid> Esterification product of p-cresol novolac resin and naphthoquinone-1,2-diazide-4-sulfonyl chloride 0.616 g Vinyl acetate-vinyl versatate copolymer (weight ratio 80 : 20, weight average molecular weight = 50,000, 50% methanol solution) 8.768g Oil Black # 6 (Chuo Gosei Chemical Co., Ltd.) 1.30g Methyl ethyl ketone 15.0g Cyclohexanone 30.3g

The colored photosensitive layer dispersion liquid was dispersed by passing it through a valve homogenizer under the condition of 5 kgf / cm ² .

In the same manner as in Comparative Example 1, λp, Dp, Dvis, Dp / Dv of the above black color image forming material 4-B.
is, Dvis (MAX) / Dvis (MIN), D
p ', Dvis' and Dp '/ Dvis' were determined. Table 2 shows the obtained results.

Further, the above black color image forming material sample 4
-B and cyan image forming material sample 1 described in Comparative Example 1-
C, magenta color image forming material sample 1-M and yellow color image forming material sample 1-Y
Proofing image D was obtained.

With respect to the black solid image portion of the obtained proofing image D, L _i ^* ,
a _i ^* , b _i ^* and

[0127]

(Equation 8) The black image was evaluated for background stain reflection density, image area solid density, shadow halftone dot reproducibility, and highlight halftone dot reproducibility. Table 2 shows the obtained results.

Using the black color image forming material sample 4-B, the cyan color image forming material sample 1-C described in Comparative Example 1, the magenta color image forming material sample 1-M, and the yellow color image forming material sample 1-Y, In the same manner as in Comparative Example 1, a black image forming material sample 4 was prepared by using a concentrated or diluted developer.
-B development is performed to create a proofing image, and with respect to the black image, the background stain reflection density, the image area solid density,
The halftone dot reproducibility in shadow areas and the halftone dot reproducibility in highlight areas were evaluated. Table 2 shows the obtained results.

In the case of using the black color image-forming material sample 4-B, the same as in the case of using the developer-1 when the developer-1 diluted with the developing solution by 1.4 times is used. On the art paper, only the colored image part was transferred, and the non-image part was not transferred. In addition, the occurrence of background stain on the non-image portion was not observed. Further, the obtained proofing image was not so different from the proofing image using the developer-1 in any of yellow, magenta, cyan and black image portions.

Comparative Example 2 Black image forming material except that a black photosensitive layer dispersion having the following composition was used as the black photosensitive layer dispersion in the preparation of the black image forming material sample 1-B of Comparative Example 1. A black image-forming material sample 5-B was prepared in the same manner as sample 1-B.

<Black Sensitive Layer Dispersion Liquid Composition> Esterification product of p-cresol novolac resin and naphthoquinone-1,2-diazide-4-sulfonyl chloride 0.616 g Vinyl acetate-vinyl versatate copolymer (weight ratio 80 : 20, weight average molecular weight = 50,000, 50% methanol solution) 8.768 g AIZEN SPILON Black MH (manufactured by Hodogaya Chemical Co., Ltd.) 1.15 g methyl ethyl ketone 15.0 g cyclohexanone 30.5 g

The colored photosensitive layer dispersion liquid was dispersed by passing it through a valve homogenizer under the condition of 5 kgf / cm ² .

In the same manner as in Comparative Example 1, λp, Dp, Dvis, Dp / Dv of the black color image forming material 5-B described above.
is, Dvis (MAX) / Dvis (MIN), D
p ', Dvis' and Dp '/ Dvis' were determined. Table 3 shows the obtained results.

Further, the above black color image forming material sample 5
-B and cyan image forming material sample 1 described in Comparative Example 1-
C, magenta color image forming material sample 1-M and yellow color image forming material sample 1-Y
Proofing image E was obtained.

For the black solid image portion of the obtained proofing image E, as in Comparative Example 1, L _i ^* ,
a _i ^* , b _i ^* and

[0136]

[Equation 9] The black image was evaluated for background stain reflection density, image area solid density, shadow halftone dot reproducibility, and highlight halftone dot reproducibility. Table 3 shows the obtained results.

Using the black color image forming material sample 5-B, the cyan color image forming material sample 1-C, the magenta color image forming material sample 1-M and the yellow color image forming material sample 1-Y described in Comparative Example 1, In the same manner as in Comparative Example 1, using a concentrated or diluted developer, a black image-forming material sample 5 was obtained.
-B development is performed to create a proofing image, and with respect to the black image, the background stain reflection density, the image area solid density,
The halftone dot reproducibility in shadow areas and the halftone dot reproducibility in highlight areas were evaluated. Table 3 shows the obtained results.

Comparative Example 3 An ethylene-vinyl acetate copolymer resin (EVA) was extruded onto a polyethylene terephthalate film (Lumirror T-60, manufactured by Toray Industries, Inc.) having a thickness of 75 μm by an extrusion laminating method.
FLEX P-1407, vinyl acetate content 14% by weight, MFR
= 15: Mitsui DuPont Polychemical)
A 30 μm-thick releasable cushion layer is formed, and at the same time, a 25 μm-thick polyethylene terephthalate film (T-100G, manufactured by Diafoil-Hoechst Co., Ltd.) is placed on the releasable cushion layer. Lamination was performed to obtain a laminated sheet.

Then, the cover sheet of the above-mentioned laminate sheet was peeled off, and the colored photosensitive layer dispersion liquid having the following composition was applied and dried on the releasable cushion layer so that the film thickness after drying would be 1.8 μm. , Black image forming material sample 6'-B, cyan image forming material sample 6'-C, which has photosensitive layers of black, cyan, magenta and yellow.
A magenta color image forming material sample 6′-M and a yellow color image forming material sample 6′-Y were prepared.

<< Colored Photosensitive Layer Dispersion Liquid Composition >> <Black Photosensitive Layer Dispersion Liquid Composition> 2,4-Diethylthioxanthone 0.219 g Ethyl p-dimethylaminobenzoate 0.219 g Kayarad DPCA-120 (Polymerizable compound: Nippon Kayaku Co., Ltd. ) 4.384 g Vinyl acetate-vinyl versatate copolymer (weight ratio 80:20, weight average molecular weight = 50,000, 50% methanol solution) 8.768 g Black: Carbon black MA-100 (Mitsubishi Chemical Co., Ltd.) 0.70 g Fluorine-based surfactant (FC-430: manufactured by 3M) 0.25 g Ethyl cellosolve 39.6 g

<Cyan Photosensitive Layer Dispersion Composition> 2,4-Diethylthioxanthone 0.219 g Ethyl p-dimethylaminobenzoate 0.219 g Kayarad DPCA-120 (Polymerizable compound: manufactured by Nippon Kayaku Co., Ltd.) 4.384 g Vinyl acetate- Vinyl versatate copolymer (weight ratio 80:20, weight average molecular weight = 50,000, 50% methanol solution) 8.768 g Cyanine blue 4920 (manufactured by Dainichiseika Co., Ltd.) 0.55 g Fluorosurfactant (FC-430: 3M) 0.25g Ethyl cellosolve 39.6g

<Magenta Photosensitive Layer Dispersion Liquid Composition> 2,4-Diethylthioxanthone 0.219 g Ethyl p-dimethylaminobenzoate 0.219 g Kayarad DPCA-120 (Polymerizable compound: manufactured by Nippon Kayaku Co., Ltd.) 4.384 g Vinyl acetate- Vinyl versatate copolymer (weight ratio 80:20, weight average molecular weight = 50,000, 50% methanol solution) 8.768 g Seika Fast Carmine 1483 (manufactured by Dainichiseika Co., Ltd.) 0.68 g Fluorosurfactant (FC-430 : 3M) 0.25g ethyl cellosolve 39.6g

<Yellow Photosensitive Layer Dispersion Liquid Composition> 2,4-Diethylthioxanthone 0.219 g Ethyl p-dimethylaminobenzoate 0.219 g Kayarad DPCA-120 (Polymerizable compound: manufactured by Nippon Kayaku Co., Ltd.) 4.384 g Vinyl acetate- Vinyl versatate copolymer (weight ratio 80:20, weight average molecular weight = 50,000, 50% methanol solution) 8.768 g Seika First Yellow H-7055 (Dainichi Seika Co., Ltd.) 0.68 g Fluorosurfactant (FC -430: manufactured by 3M) 0.25 g ethyl cellosolve 39.6 g

The colored photosensitive layer dispersion liquid was dispersed by passing it through a valve homogenizer under the condition of 5 kgf / cm ² .

A protective layer coating solution having the following composition was applied and dried on a polyethylene terephthalate film having a thickness of 25 μm so that the film thickness after drying was 0.5 μm, to prepare a cover sheet having a protective layer.

<Protective Layer Coating Liquid Composition> Polyvinyl alcohol (Gosenol GL-05: manufactured by Nippon Synthetic Chemical Co., Ltd.) 1.0 g Hydroxypropylmethyl cellulose (TC-5R: manufactured by Shin-Etsu Chemical Co., Ltd.) 1.0 g Deionized water 98 g

The protective layer side of this cover sheet was brought into close contact with the photosensitive layer formed on the releasable cushion layer, and the distance between the pair of heated nip rolls was 5 m / m under a pressure of 3 kgf / cm ^2. The negative working type colored image forming material sample of four colors, the black color image forming material sample 6-B, the cyan color image forming material sample 6-C, and the magenta color image forming material sample 6 by passing at a speed of min. -M, yellow color image forming material sample 6-Y was prepared.

In the same manner as in Comparative Example 1, λp, Dp, Dvis, Dp / Dv of the above black color image forming material 6-B were used.
is, Dvis (MAX) / Dvis (MIN), D
p ', Dvis' and Dp '/ Dvis' were determined. Table 3 shows the obtained results.

Further, the above black color image forming material sample 6
-B, cyan color image forming material sample 6-C, magenta color image forming material sample 6-M, yellow color image forming material sample 6
A proofing image F was obtained in the same manner as in Comparative Example 1 using -Y.

Obtained Black Image-Forming Material Sample 6-
B, cyan image forming material sample 6-C, magenta image forming material sample 6-M, yellow image forming material sample 6-
On the polyethylene terephthalate film side of Y, a color-separated net positive film of each color is adhered so that the image after development becomes a reverse image when viewed from the photosensitive layer side, and a Konica step tablet after development for each color with a 4kW metal halide lamp. -A
Image exposure (60 seconds) with an exposure amount adjusted to completely remove the third step, and the cover sheet was peeled off so that the protective layer of the cover sheet remained on the photosensitive layer side. It was immersed in the developer-1 for 30 seconds at 32 ° C. and developed by rubbing with a sponge to obtain a colored image of four colors with the exposed portion removed. At this time, the protective layer was dissolved and removed.

[Developer-1] Konica PS plate developer SDP-1 (manufactured by Konica Corporation) 40 ml Perex NB-L (surfactant: manufactured by Kao Atlas Co., Ltd.) 100 ml distilled water 400 ml

The image surface of the yellow image formed by development and the art paper [Tokubishi Art (127.9 g / m ² ): Mitsubishi Paper Mills Co., Ltd.] were brought into close contact with each other and heated to 80 ° C. After passing between the nip rolls at a speed of 0.5 m / min. Under a pressure of 5 kgf / cm ² , the support was immediately peeled off. The peeling was easily performed at the interface between the cushion layer and the colored image, and the yellow image was transferred onto the art paper. Then, in the same manner, transfer the colored images in the order of magenta, cyan, and black, and perform full exposure for about 120 seconds from a distance of 50 cm with a 4 kW metal halide lamp to proof the four-color image on the art paper. Image F was created.

With respect to the black solid image portion of the obtained proofing image F, in the same manner as in Comparative Example 1, L _i ^* ,
a _i ^* , b _i ^* and

[0154]

(Equation 10) The black image was evaluated for background stain reflection density, image area solid density, shadow halftone dot reproducibility, and highlight halftone dot reproducibility. Table 3 shows the obtained results.

Black color image forming material sample 6-B, cyan color image forming material sample 6-C, magenta color image forming material sample 6-M, and yellow color image forming material sample 6-Y were used as the developing solution. Developer-1 with 1.4 times concentrated developer, 1.2 times concentrated developer, 1.2 times diluted with distilled water, 1.4 times diluted with distilled water, 1.6 times with distilled water. Black image-forming material sample 6-using a developer diluted twice and a developer diluted 1.8 times with distilled water
A proofing image in which images of four colors were transferred onto art paper was prepared in the same manner as the preparation of the proofing image F except that the development of B was performed.

With respect to the black color images of the obtained proofing images, the background stain reflection density, the image area solid density, the shadow area halftone dot reproducibility, and the highlight area halftone dot reproducibility were evaluated by the above evaluation methods. Table 3 shows the obtained results.

Example 4 Colored image forming material sample 6 except that the black photosensitive layer dispersion liquid having the following composition was used as the black photosensitive layer dispersion liquid in the preparation of the colored image forming material sample 6-B of Comparative Example 3. A colored image-forming material sample 7-B was prepared in the same manner as in -B.

<Black photosensitive layer dispersion composition> 2,4-diethylthioxanthone 0.219 g Ethyl p-dimethylaminobenzoate 0.219 g Kayarad DPCA-120 (polymerizable compound: manufactured by Nippon Kayaku Co., Ltd.) 4.384 g Vinyl acetate- Vinyl versatate copolymer (weight ratio 80:20, weight average molecular weight = 50,000, 50% methanol solution 8.768 g carbon black MA-100 (manufactured by Mitsubishi Chemical Corporation) 0.40 g Oil Black # 6 (Chuo Synthetic Chemical Co. Ltd. ) 0.72 g Fluorine-based surfactant (FC-430: manufactured by 3M) 0.25 g Ethyl cellosolve 39.6 g

The colored photosensitive layer dispersion was dispersed by passing it through a valve homogenizer under the condition of 5 kgf / cm ² .

In the same manner as in Comparative Example 1, λp, Dp, Dvis, Dp / Dv of the above black image forming material 7-B were obtained.
is, Dvis (MAX) / Dvis (MIN), D
p ', Dvis' and Dp '/ Dvis' were determined. The results obtained are shown in Table 4.

Further, the above black color image forming material sample 7
-B and cyan image forming material sample 6 described in Comparative Example 3-
C, magenta color image forming material sample 6-M, and yellow color image forming material sample 6-Y were used, and in the same manner as in Comparative Example 3,
Proofing image G was obtained.

With respect to the black solid image portion of the obtained proofing image G, L _i ^* ,
a _i ^* , b _i ^* and

[0163]

[Equation 11] The black image was evaluated for background stain reflection density, image area solid density, shadow halftone dot reproducibility, and highlight halftone dot reproducibility. The results obtained are shown in Table 4.

Using the black color image forming material sample 7-B, the cyan color image forming material sample 1-C described in Comparative Example 3, the magenta color image forming material sample 1-M and the yellow color image forming material sample 1-Y, In the same manner as in Comparative Example 3, using a concentrated or diluted developer, a black image forming material sample 7 was obtained.
-B development is performed to create a proofing image, and with respect to the black image, the background stain reflection density, the image area solid density,
The halftone dot reproducibility in shadow areas and the halftone dot reproducibility in highlight areas were evaluated. The results obtained are shown in Table 4.

In the case of using the black image-forming material sample 7-B, the same as in the case of using the developer-1 even when the developer-1 diluted 1.4 times with distilled water is used. On the art paper, only the colored image part was transferred, and the non-image part was not transferred. In addition, the occurrence of background stain on the non-image portion was not observed. Further, the obtained proofing image was not so different from the proofing image using the developer-1 in any of yellow, magenta, cyan and black image portions.

Comparative Example 4 A colored photosensitive layer dispersion having the following composition was applied on a polyethylene terephthalate film having a thickness of 12 μm so that the film thickness after drying was 2 μm, and dried at 80 ° C. for 2 minutes,
A 40-μm-thick polyethylene terephthalate film (protective sheet) is laminated, and black image forming material sample 8-B and cyan image forming material sample 8-having black, cyan, magenta, and yellow photosensitive layers are formed.
C, magenta color image forming material sample 8-M and yellow color image forming material sample 8-Y were prepared.

<< Colored Photosensitive Layer Dispersion Liquid Composition >> <Black Photosensitive Layer Dispersion Liquid Composition> Daiso Dup (diallyl isophthalate prepolymer: manufactured by Osaka Soda Co., Ltd.) 10.2 g Foral 85 (completely hydrogenated rosin glycerin ester: Rika 11- Cures Co., Ltd.) 4.0 g Dipentaerythritol hexaacrylate 6.8 g 2,4-Diethylthioxanthone 0.45 g Ethyl p-dimethylaminobenzoate 0.15 g Hydroquinone 0.001 g Carbon black MA-7 (Mitsubishi Chemical Co., Ltd.) 3.0 g Toluene 35.7 g Methyl ethyl ketone 35.7 g

<Cyan Photosensitive Layer Dispersion Liquid Composition> Daiso Dup (diallyl isophthalate prepolymer: manufactured by Osaka Soda Co., Ltd.) 10.2 g Foral 85 (completely hydrogenated rosin glycerin ester: manufactured by Rika 11-Cures Co., Ltd.) 4.0 g Dipentaerythritol hexaacrylate 6.8 g 2,4-diethylthioxanthone 0.45 g Ethyl p-dimethylaminobenzoate 0.15 g Hydroquinone 0.001 g Lionol blue FG7330 (manufactured by Toyo Ink Mfg. Co.) 4.7 g Toluene 35.7 g Methyl ethyl ketone 35.7 g

<Magenta Photosensitive Layer Dispersion Composition> Daiso Dup (diallyl isophthalate prepolymer: manufactured by Osaka Soda Co., Ltd.) 10.2 g Foral 85 (completely hydrogenated rosin glycerin ester: manufactured by Rika 11-Cures Co., Ltd.) 4.0 g Dipentaerythritol hexaacrylate 6.8 g 2,4-diethylthioxanthone 0.45 g Ethyl p-dimethylaminobenzoate 0.15 g Hydroquinone 0.001 g Lionol Red 7BFG4412 (manufactured by Toyo Ink Mfg. Co., Ltd.) 4.7 g Toluene 35.7 g Methyl ethyl ketone 35.7 g

<Yellow Photosensitive Layer Dispersion Composition> Daiso Dup (diallyl isophthalate prepolymer: manufactured by Osaka Soda Co., Ltd.) 10.2 g Foral 85 (completely hydrogenated rosin glycerin ester: manufactured by Rika 11-Cures Co., Ltd.) 4.0 g Dipentaerythritol hexaacrylate 6.8 g 2,4-Diethylthioxanthone 0.45 g Ethyl p-dimethylaminobenzoate 0.15 g Hydroquinone 0.001 g Lionol Yellow FG1310 (manufactured by Toyo Ink Mfg. Co.) 4.7 g Toluene 35.7 g Methyl ethyl ketone 35.7 g

The colored photosensitive layer dispersion liquid was dispersed by passing it through a valve homogenizer under the condition of 5 kgf / cm ² .

In the same manner as in Comparative Example 1, λp, Dp, Dvis, Dp / Dv of the black color image forming material 8-B described above.
is, Dvis (MAX) / Dvis (MIN), D
p ', Dvis' and Dp '/ Dvis' were determined. Table 5 shows the obtained results.

Further, the above black color image forming material sample 8
-B, cyan color image forming material sample 8-C, magenta color image forming material sample 8-M, yellow color image forming material sample 8
-Y side 12 μm thick polyethylene terephthalate film side, color separation net positive film of each color is closely adhered so that the image after development becomes a reverse image when viewed from the photosensitive layer side, transfer for each color by 4kW metal halide lamp Image exposure (60 seconds) was performed with an exposure amount adjusted so that the paper surface of the third step of Konica Step Tablet-A later was completely exposed.
Then, the 40 μm-thick polyethylene film (protective sheet) of the yellow image forming material 8-Y is peeled off, and the yellow image forming material 8-Y is replaced with the art paper having the photosensitive layer of the yellow image forming material 8-Y. Art paper [Tokubishi Art (127.9 g / m ² ): Mitsubishi Paper Mills Co., Ltd.] is overlaid so that it adheres closely to, and the image is transferred through the nip between the rollers, and then the yellow image forming material 8-Y. Was peeled off and post-exposed.

Subsequently, in the same manner, the magenta, cyan, and black colored images are transferred onto the art paper onto which the yellow color image has been transferred, and post-exposure is performed to perform proofing in which the four-color image is transferred onto the art paper. Image H was created.

The transfer conditions are: feed speed = 50 cm / min, nip pressure between rollers = 4 kgf / cm ² , roller temperature (upper) = 4
8 ℃, roller temperature (lower) = 98 ℃, roller diameter = 150 mm,
Shore hardness of roller (upper) A = 70, width of transferred material = 26
The contact distance was 0 mm and the contact distance was 10 mm.

On the art paper, only the colored image portion was transferred, and the non-image portion was not transferred. In addition, the occurrence of background stain on the non-image portion was not observed.

For the solid black image portion of the obtained proofing image H, L _i ^* ,
a _i ^* , b _i ^* and

[0178]

(Equation 12) The black image was evaluated for background stain reflection density, image area solid density, shadow halftone dot reproducibility, and highlight halftone dot reproducibility. Table 5 shows the obtained results.

The combination of the upper roller temperature and the lower roller temperature at the time of transfer is as follows: upper roller temperature / lower roller temperature = 48 ° C./85° C., 48 ° C./92° C., 57 ° C./105° C., 65 ° C./110
C., 73.degree. C./120.degree. C., 80.degree. C./120.degree. C. were replaced with black image forming material sample 8-B, and proofing image was prepared in the same manner as the above proofing image H. .

With respect to the obtained black color image of the proofing image, the background stain reflection density, the image area solid density, the shadow area halftone dot reproducibility and the highlight area halftone dot reproducibility were evaluated in the same manner as in Comparative Example 1. . Table 5 shows the obtained results.

Examination of the obtained proofing images revealed that the upper roller temperature was 65 ° C. and the lower roller temperature was 110 ° C.
In the case of, the yellow, magenta, and cyan image portions were similar to the proofing image H, but the black image portion had poor reproducibility of the shadow portion and black background stain was observed in the non-image portion. Was given.

Example 5 Colored image forming material sample 8 except that a black photosensitive layer dispersion having the following composition was used as the black photosensitive layer dispersion in the preparation of the black image forming material sample 8-B of Comparative Example 4. Colored image forming material sample 9-B in the same manner as
It was created.

<Black Sensitive Layer Dispersion Liquid Composition> Daiso Dup (diallyl isophthalate prepolymer: manufactured by Osaka Soda Co., Ltd.) 10.2 g Foral 85 (completely hydrogenated rosin glycerin ester: manufactured by Rika 11-Cures Co., Ltd.) 4.0 g Dipentaerythritol hexaacrylate 6.8 g 2,4-Diethylthioxanthone 0.45 g Ethyl p-dimethylaminobenzoate 0.15 g Hydroquinone 0.001 g Carbon black MA-7 (manufactured by Mitsubishi Chemical Corporation) 1.6 g Aerosil R972D (Nippon Aerosil Industrial Co., Ltd.) 0.7 g Diaresin Black B 2.4 g Toluene 35.7 g Methyl ethyl ketone 35.7 g

The colored photosensitive layer dispersion liquid was dispersed by passing it through a valve homogenizer under the condition of 5 kgf / cm ² .

In the same manner as in Comparative Example 1, λp, Dp, Dvis, Dp / Dv of the above black color image forming material 9-B were used.
is, Dvis (MAX) / Dvis (MIN), D
p ', Dvis' and Dp '/ Dvis' were determined. Table 5 shows the obtained results.

Further, the above black color image forming material sample 9
-B, cyan color image forming material sample 8-C, magenta color image forming material sample 8-M, yellow color image forming material sample 8
Proofing image I was prepared in the same manner as Proofing image D of Comparative Example 4 using -Y.

Only the colored image portion was transferred onto the art paper. That is, the paper surface of the non-image portion was exposed, and no background stain was observed in the non-image portion.

With respect to the black solid image portion of the obtained proofing image I, L _i ^* ,
a _i ^* , b _i ^* and

[0189]

(Equation 13) Further, in the same manner as in Comparative Example 1, the background color reflection density, the image area solid density, the shadow area halftone dot reproducibility, and the highlight area halftone dot reproducibility of the black image were evaluated. Table 5 shows the obtained results.

The combination of the upper roller temperature and the lower roller temperature at the time of transfer is as follows: upper roller temperature / lower roller temperature = 48 ° C./85° C., 48 ° C./92° C., 57 ° C./105° C., 65 ° C./110
Proofing images were prepared in the same manner as described above, except that the black image-forming material sample 9-B was transferred in place of C, 73 ° C / 120 ° C, 80 ° C / 120 ° C.

With respect to the obtained black color image of the proofing image, the background stain reflection density, image area solid density, shadow area halftone dot reproducibility, and highlight area halftone dot reproducibility were evaluated in the same manner as in Comparative Example 1. . Table 5 shows the obtained results.

Even when the combination of the upper roller temperature and the lower roller temperature at the time of transfer was changed to upper roller temperature / lower roller temperature = 65 ° C./110° C., only the colored image portion was transferred onto the art paper. That is, the paper surface of the non-image area was exposed, and the occurrence of background stain on the non-image area was not recognized, and an image that was not much different from the proofing image I was obtained.

Example 6 Colored image forming material sample 8 except that a black photosensitive layer dispersion having the following composition was used as the black photosensitive layer dispersion in the preparation of the black color image forming material sample 8-B of Comparative Example 4. -Colored image forming material sample 10 in the same manner as B-
B was created.

[Black Color Photosensitive Layer Dispersion] Daiso Dup (diallyl isophthalate prepolymer: manufactured by Osaka Soda Co., Ltd.) 10.2 g Foral 85 (completely hydrogenated rosin glycerin ester: manufactured by Rika 11-Cures Co., Ltd.) 4.0 g Dipentaerythritol hexaacrylate 6.8 g 2,4-Diethylthioxanthone 0.45 g Ethyl p-dimethylaminobenzoate 0.15 g Hydroquinone 0.001 g Carbon black MA-7 (manufactured by Mitsubishi Chemical Corporation) 1.0 g Aerosil R972D (Nippon Aerosil Industrial Co., Ltd.) 0.7g Sudan Black 141 (Chuo Gosei Kagaku Co., Ltd.) 2.3g Toluene 35.7g Methylethylketone 35.7g Dispersion of the colored photosensitive layer dispersion is carried out through a valve homogenizer under the conditions of 5kgf / cm ² . I went by.

In the same manner as in Comparative Example 1, λp, Dp, Dvis, Dp / D of the black color image forming material 10-B described above.
vis, Dvis (MAX) / Dvis (MIN), D
p ', Dvis' and Dp '/ Dvis' were determined. Table 6 shows the obtained results.

Also, the above black color image forming material sample 1
0-B, cyan color image-forming material sample 8-C, magenta color image-forming material sample 8-M, and yellow color image-forming material sample 8-Y, were processed in the same manner as proofing image D of Comparative Example 4. A roofing image J was created.

Only the colored image portion was transferred onto the art paper. That is, the paper surface of the non-image portion was exposed, and no background stain was observed in the non-image portion.

For the black solid image portion of the obtained proofing image J, as in Comparative Example 1, L _i ^* ,
a _i ^* , b _i ^* and

[0199]

[Equation 14] Further, in the same manner as in Comparative Example 1, the background color reflection density, the image area solid density, the shadow area halftone dot reproducibility, and the highlight area halftone dot reproducibility of the black image were evaluated. Table 6 shows the obtained results.

The combination of the upper roller temperature and the lower roller temperature at the time of transfer is as follows: upper roller temperature / lower roller temperature = 48 ° C./85° C., 48 ° C./92° C., 57 ° C./105° C., 65 ° C./110
Proofing images were prepared in the same manner as described above, except that the black image-forming material sample 10-B was transferred in place of the temperatures of 73 ° C., 73 ° C./115° C., and 80 ° C./115° C.

With respect to the obtained black color image of the proofing image, in the same manner as in Comparative Example 1, the background stain reflection density, the image area solid density, the shadow area halftone dot reproducibility, and the highlight area halftone dot reproducibility were evaluated. . Table 6 shows the obtained results.

Even when the combination of the upper roller temperature and the lower roller temperature at the time of transfer was changed to upper roller temperature / lower roller temperature = 65 ° C./110° C., only the colored image portion was transferred onto the art paper. That is, the paper surface of the non-image portion was exposed, and the occurrence of background stain on the non-image portion was not recognized, and an image that was not much different from the proofing image J was obtained.

[0203]

[Table 1]

[0204]

[Table 2]

[0205]

[Table 3]

[0206]

[Table 4]

[0207]

[Table 5]

[0208]

[Table 6]

[0209]

INDUSTRIAL APPLICABILITY The photosensitive colored image forming material of the present invention has excellent development stability and is not easily affected by changes in transfer conditions at the time of image transfer. It is possible to obtain a transferred image with less transfer defects and background stains (non-image area stains) even when changes in transfer conditions change.

Claims (11)

[Claims] 1. A photosensitive colored image-forming material comprising a support and a photosensitive colored image-forming layer coated on the support, wherein the photosensitive colored image-forming layer can be imagewise transferred. Wavelengths of constituent substances other than the photosensitive substance contained in the image forming layer (λp-30) nm to (λp + 30) nm [λp is the maximum in the wavelength range of 300 nm to 400 nm of the photosensitive substance contained in the photosensitive colored image forming layer. Transmission absorbance wavelength (nm)], the ratio of the average transmission absorbance Dp in the range of 400 nm to 760 nm and the average transmission absorbance Dvis, Dp / Dvis is 1.
A photosensitive colored image-forming material characterized by being 2 or less. 2. The photosensitive material according to claim 1, wherein the constituents other than the photosensitive material contained in the photosensitive colored image forming layer have an average transmission absorbance Dvis of 0.50 or more in the wavelength range of 400 nm to 760 nm. Colored image forming material. 3. The ratio of the maximum transmission absorbance Dvis (MAX) and the minimum transmission absorbance Dvis (MIN) of the constituent substances other than the photosensitive substance contained in the photosensitive colored image forming layer in the wavelength range of 400 nm to 760 nm, Dvis ( MAX) / Dvi
2. s (MIN) is 10 or less.
Or the photosensitive colored image-forming material as described in 2 above. 4. In a 100% image portion of the final transferred image, Is 10 or less, The photosensitive colored image forming material according to claim 1. 5. The wavelength (λp-30) nm to (λp + 30) nm of the colorant contained in the photosensitive colored image forming layer (where λp is the maximum transmission absorbance wavelength of the photosensitive substance contained in the photosensitive colored image forming layer ( nm)] average transmission absorbance Dp 'in the range and wavelength 400-760 nm average transmission absorbance Dvis'
The ratio of Dp '/ Dvis' is 1.2 or less, and the photosensitive colored image-forming material according to any one of claims 1 to 4, wherein. 6. Between the support and the photosensitive colored image forming layer,
A release layer and / or a release cushion layer capable of peeling off the photosensitive colored image forming layer, and is capable of transferring the photosensitive colored image forming layer imagewise. The photosensitive colored image-forming material according to claim 1. 7. The photosensitive colored image forming material according to claim 1, wherein the photosensitive colored image forming layer is composed of a single layer. 8. The photosensitive colored image forming layer according to claim 1, wherein the photosensitive colored image forming layer is a photosensitive colored image forming layer containing a carbon black pigment as a colorant. Forming material. 9. A method of forming a multicolor image by transferring using a plurality of colored image forming materials, wherein at least one photosensitive colored image forming material according to claim 1 is used. And a multicolor image forming method. 10. The multicolor image forming method according to claim 9, wherein image exposure is performed from the back side of the surface on which the photosensitive colored image forming layer is coated, and the image is transferred. 11. A method for forming a multicolor image having at least four colors of yellow, magenta, cyan, and black by transferring using a colored image forming material of at least four colors of yellow, magenta, cyan, and black, wherein black is used. The multicolor image forming method according to claim 9 or 10, wherein the photosensitive colored image forming material according to any one of claims 1 to 8 is used as the image forming material.