JPH07128845A - Colored image forming material and transferred image forming method - Google Patents

Abstract

PURPOSE:To enhance sensitivity and to improve discoloration resistance and dot reproducibility without requiring high temp. and pressure at the time of transfer by forming a colored photosensitive layer contg. a specified photosensitive compsn. and a protective layer on a substrate. CONSTITUTION:A colored photosensitive layer contg. a photosensitive compsn. contg. o-naphthoquinonediazidosulfonyl chloride, an ester compd. of novolak resin and a high molecular compd. having polymn. units of vinyl ester of carboxylic acid represented by the formula in the molecular structure and a protective layer are formed on a substrate. In the formula, R is >=11C hydrocarbon group. The protective layer is made of a water-soluble polymer (cellulose, polyacrylic acid or modified vinyl acetate resin) and preferably contains a matting agent such as silicon dioxide, colloidal silica, aluminum oxide, aluminum silicate, titanium dioxide or calcium carbonate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a colored image forming material and a transfer image forming method suitable for producing a color proof for color proofing in color printing.
In particular, the present invention relates to a colored image-forming material which has good color reproducibility during transfer without requiring high temperature and high pressure and has discoloration resistance, and a transfer image forming method.

[0002]

BACKGROUND OF THE INVENTION It is well known in the art that color sheets (also called color proofs) for color proofing are used to save the labor and time required for proof printing as a pre-step of main printing in multi-color printing. .

A method for producing a multicolor transfer image using a color sheet for color proofing is disclosed in, for example, JP-A-47-41.
No. 830, a direct transfer system in which a colored image is directly transferred and laminated on a final image receiving paper, and an indirect transfer system, in which a colored image is temporarily transferred onto a temporary image receiving sheet, described in JP-A-59-97140. Further, there may be mentioned a method of repeating the step of forming an image after transferring the colored photosensitive layer to an image receiving paper described in JP-A-56-50127.

In all of these methods, since the surface of the material to be transferred on which an image is formed is covered with an organic polymer layer, the glossiness of the obtained image surface is too high, which is different from the image quality at the time of actual printing. It had a problem of giving an impression.

In order to solve this problem, therefore, an image-only transfer method has been considered in which only a colored image is transferred and laminated on a material to be transferred to form a multicolor image. In this method, since the material to be transferred is not covered with the organic polymer layer, it is possible in principle to obtain an image that is extremely close to the image quality at the time of actual printing.

[0006]

As a colored image forming material used in a transfer method for transferring only an image portion, o-
It is known to use a photosensitive composition containing a quinonediazide compound and a novolac type phenolic resin,
This technique requires high temperature and high pressure to transfer an image, and has a disadvantage of poor color fastness.

Therefore, Japanese Patent Application No. 63-288457 proposes to use a carboxylic acid vinyl ester resin in order to solve the above problems. However, this technique has a low exposure sensitivity. Therefore, when an attempt was made to introduce an alkali-solubilizing group into the resin in order to improve the sensitivity, it was found that the transferability was lowered.

The present invention solves the above problems of the prior art,
It is an object of the present invention to provide a colored image forming material and a transfer image forming method which improve the sensitivity without impairing the performance of the technique described in Japanese Patent Application No. 63-288457. In particular, it is an object of the present invention to provide a colored image forming material and a transfer image forming method which do not require high temperature and high pressure at the time of transfer, are excellent in discoloration resistance, and have good dot reproducibility.

[0009]

To achieve the above object, the present invention has the following constitution. 1; Colored photosensitive layer and protection containing a photosensitive composition containing an esterified product of o-naphthoquinone diazide sulfonyl chloride and a novolak resin and a polymer compound having a carboxylic acid vinyl ester polymerization unit represented by the following general formula in its molecular structure A colored imaging element having a layer on a support.

[0010]

[Chemical 2] R: is a hydrocarbon group having 11 or more carbon atoms; 2. The colored image-forming material as described in 1 above, which has a heat-softening layer between the support and the colored photosensitive layer. 3; Colored photosensitive layer and protection containing a photosensitive composition containing an esterified product of o-naphthoquinone diazide sulfonyl chloride and a novolak resin and a polymer compound having a carboxylic acid vinyl ester polymerization unit represented by the following general formula in its molecular structure A transfer image forming method for obtaining a transfer image by exposing and developing a colored image forming material having a layer on a support to form an image portion, and transferring at least the formed image portion onto a material to be transferred.

The most preferred embodiment of the present invention is a colored photosensitive layer; a photosensitive material containing an esterified product of o-naphthoquinone diazide sulfonyl chloride and a novolak resin and a polymer compound having a specific carboxylic acid vinyl ester polymerized unit in its molecular structure. Protective composition; water-soluble polymer (cellulose, polyacrylic acid,
Modified vinyl acetate resin), the protective layer used in the conventional photopolymerization system has poor gas permeability, cannot be used in o-quinonediazide system, and needs a polymer having good gas permeability because it is used in o-quinonediazide. is there. And the protective layer is
It is particularly preferable to include a matting agent; silicon dioxide (including colloidal silica), aluminum oxide, aluminum silicate, titanium dioxide, calcium carbonate and the like.

[0012]

DETAILED DESCRIPTION OF THE INVENTION The present invention is described in detail below. In the present invention, the content of the photoconductor in the colored photosensitive layer is, for example, preferably 5 to 80% by weight.

The colored photosensitive layer may be composed of one layer or two layers.
A binder is contained even when it is divided into more than one layer. As such a binder, the binder of the present invention which is film-forming and solvent-soluble and which can be dissolved or swelled in an alkali developing solution can be used.

In the present invention, the colored photosensitive layers are 1, 2
-An esterification product of naphthoquinone diazide-4-sulfonyl chloride or 1,2-naphthoquinone diazide-5-sulfonyl chloride and cresol novolac resin (particularly p-cresol novolac resin) (the esterification rate is preferably 30 to 100 mol%). In particular, the above R: C: C 11 to 20 is preferable.
5-17 are more preferable. Further, it is preferably a saturated hydrocarbon and more preferably a straight chain structure rather than a branched structure. And it may be a copolymer with another polymerizable monomer, and the copolymerization ratio (other monomer / monomer on the left) is preferably 40/60 to 95/5, and 60/40 to
90/10 (weight ratio) is more preferable. The other polymer unit may be any polymer as long as it can polymerize with the polymer unit shown below, but is preferably the polymer unit shown below having 10 or less carbon atoms or the polymer unit derived from unsaturated carboxylic acids. The content ratio of the (co) polymer of the present invention in all polymer compounds is preferably 1% by weight or more. Any compound may be used as long as it is compatible with the present (co) polymer, but the polymer compounds described below are preferable.

In the image forming material of the present invention, a polymer compound having a carboxylic acid vinyl ester polymerized unit represented by the following general formula in its molecular structure is used as a binder constituting the colored photosensitive layer.

[0016]

[Chemical 3] However, R represents a hydrocarbon group having 11 or more carbon atoms.

Any polymer compound having the above structure can be arbitrarily used, but as the carboxylic acid vinyl ester monomer for constituting the polymerized unit represented by the above general formula, the following examples are given. preferable. The name and chemical formula are shown together. (1) Vinyl laurate CH ₃ (CH ₂ ) ₁₀ COOCH = CH ₂ (2) Vinyl myristate CH ₃ (CH ₂ ) ₁₂ COOCH = CH ₂ (3) Vinyl palmitate CH ₃ (CH ₂ ) ₁₄ COOCH = CH ₂ (4) Vinyl stearate CH ₃ (CH ₂ ) ₁₆ COOCH═CH ₂ polymer compound may be a polymer obtained by polymerizing one kind of carboxylic acid vinyl ester, or by copolymerizing two or more kinds of carboxylic acid vinyl ester. It may be a polymer or a copolymer of vinyl carboxylic acid ester and another monomer copolymerizable therewith in any ratio.

Examples of the monomer unit that can be used in combination with the polymer unit represented by the above general formula include R
Is 10 or less, the unit represented by the above general formula, for example, ethylene-based unsaturated olefins such as ethylene, propylene, isobutylene, butadiene, and isoprene, for example, styrene, α-methylstyrene, p-methylstyrene, p-
Styrenes such as chlorostyrene, for example, acrylic acids such as acrylic acid and methacrylic acid, for example, unsaturated aliphatic (di) carboxylic acids such as crotonic acid, itaconic acid, maleic acid and maleic anhydride, for example diethyl maleate, maleic acid Dibutyl, di-2-ethylhexyl maleate,
Diesters of unsaturated dicarboxylic acids such as dibutyl fumarate and di-2-ethylhexyl fumarate, such as methyl acrylate, ethyl acrylate, n-butyl acrylate,
Α-Methylene aliphatic monocarboxylic acid esters such as isobutyl acrylate, dodecyl acrylate, 2-chloroethyl acrylate, phenyl acrylate, methyl α-chloroacrylate, methyl methacrylate, ethyl methacrylate, for example, acrylonitrile, methacrylonitrile. , Amides such as acrylamide, such as acrylanilide, p-chloroacrylanilide,
Anilides such as m-nitroacrylanilide and m-methoxyacrylanilide, such as methyl vinyl ether,
Ethyl vinyl ether, isobutyl vinyl ether, β
-Vinyl ethers such as chloroethyl vinyl ether,
Vinyl chloride, vinylidene chloride, vinylidene cyanide, such as 1-methyl-1-methoxyethylene, 1,
Ethylene derivatives such as 1-dimethoxyethylene, 1,2-dimethoxyethylene, 1,1-dimethoxycarbonylethylene, 1-methyl-1-nitroethylene, such as N-vinylpyrrole, N-vinylcarbazole, N-vinylindole, There are vinyl monomers such as N-vinyl compounds such as N-vinylpyrrolidene and N-vinylpyrrolidone. These vinyl monomers generally have a structure in which an unsaturated double bond is cleaved and are present in the polymer compound.

When the polymer compound represented by the above general formula is used in the present invention, it is particularly preferable that the polymer compound of the present invention has 1 to 50 wt% and the number average molecular weight (MN) is 1. 1,000 to 100,000,
Weight average molecular weight (MW) of 5,000 to 500,000
Are preferred.

More preferably, a polymer compound comprising the polymerized units of the present invention (particularly those having 1 to 50 wt%) and vinyl acetate polymerized units is preferable, and particularly, the number average molecular weight (M
N) is 2,000 to 60,000, and the weight average molecular weight (M
The W) is preferably 10,000 to 150,000.

As the photosensitive composition used in the colored photosensitive layer of the present invention, a known positive type photosensitive composition / negative type photosensitive composition can be used. As the positive type photosensitive composition, It is preferable to use a photosensitive composition containing an o-quinonediazide compound. Examples of the o-quinonediazide compound include those described in J. “Light Sen” by Kosar
Sitive System "(Wiley & So
ns, New York, 1965) and Ken Matsunaga, “Photosensitive Polymer” (Kodansha, 1977).

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 trihydroxybenzophenone, hydroxyanthraquinone,
Examples include bisphenol A, phenol novolac resin, resorcinbenzaldehyde condensation resin, and pyrogallolacetone condensation resin. Examples of the amino group-containing compound include aniline, p-aminodiphenylamine, p
-Aminobenzophenone, 4,4'-diaminobenzophenone, 4,4'-diaminodiphenylamine and the like.

As the negative photosensitive composition, a photopolymerizable photosensitive composition is preferable. Specifically, for example, as the photopolymerizable compound, those generally used can be arbitrarily used. 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. For example, ethylene glycol diacrylate, glycerin triacrylate, polyacrylate, ethylene glycol dimethacrylate, 1,3-propanediol dimethacrylate, polyethylene glycol dimethacrylate, 1,2,4-butanetriol-trimethacrylate, trimethylolethane triacrylate. , Pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol polyacrylate, 1,3-propanediol diacrylate, 1,5- Pentanediol dimethacrylate, polyethylene glycol Can be mentioned chromatography bis acrylates or bis methacrylate, but is not limited thereto.

The negative photosensitive layer can contain a photopolymerization initiator. In this case, the photopolymerization initiator is optional, but a photopolymerization initiator having less absorption in the visible region is more preferable, and examples thereof include the following compounds. However, it is not limited to these. That is, benzophenone, Michler's ketone [4,4'-bis- (dimethylamino) benzophenone], 4,4'-bis (diethylamino) benzophenone, 4-methoxy-4'-dimethylaminobenzophenone, 2-ethylanthraquinone, phenanthra Aromatic ketones such as quinone and other aromatic ketones, benzoin, benzoin methyl ether, benzoin ethers such as benzoin ethyl ether and benzoin phenyl ether, methylbenzoin, ethylbenzoin and other benzoins, and 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 U.S. Pat. No. 3,479,1.
No. 85, British Patent No. 1,047,569 and US Pat. No. 3,784,557, 2,4,5-triacrylimidazole duplexes, such as similar duplexes. You can

Other photopolymerizable compounds include 2,4-
It is also possible to use thioxanthones such as diethylthioxanthone. In this case, a compound known as a photopolymerization accelerator, for example, p-dimethylaminobenzoic acid isoamyl ester, p-dimethylaminobenzoic acid ethyl ester,
N-methyldiethanolamine, bisdiethylaminobenzophenone, etc. can be used.

Further, in the present invention, other polymer compounds usable as the binder for the colored photosensitive layer together with the polymer compound of the present invention include sulfoalkyl ester of (meth) acrylic acid (co) polymer, Examples also include vinyl acetal (co) polymers, vinyl ether (co) polymers, acrylamide (co) polymers, styrene (co) polymers, and cellulose derivatives.

The photosensitive composition of the present invention can be used as an image forming material. For example, it can be used as a colored image forming material when used as a color proof. In this case, the colored photosensitive layer of the colored image forming material is image-wise removed by imagewise exposure and subsequent development to form a colored image.

In the colored photosensitive layer, a dye and / or a coloring agent are used.
Alternatively, a pigment is added. Especially when used for color proofing,
Pigments and dyes having the color tone matching the required constant colors, that is, yellow, magenta, cyan, and black are required, but other metal powders, white pigments, fluorescent pigments, etc. are also used. When applying the present invention to color proofing, many pigments and dyes known in the art can be used, such as:

(C.I means color index). Victoria Pure Blue (CI 42595) Auramine (CI 41000) Catillon Brilliant Flavin (CI Basic 1
3) Rhodamine 6GCP (CI 45160) Rhodamine B (CI 45170) Safranine OK 70: 100 (CI 50240) Erioglaucin X (CI 42080) Fast Black HB (CI 26150) No. 1201 Lionol Yellow (C.I. 2109
0) Lionol Yellow GRO (CI 21090) Shimla First Yellow 8GF (CI 2110)
5) Benzidine Yellow 4T-564D (C.I 2109
5) Shimla Fast Red 4015 (C.I 1235
5) Lionol Red 7B4401 (CI 15830) Fastgen Blue TGR-L (CI 7416)
0) Lionol Blue SM (CI 26150) Mitsubishi Carbon Black MA-100 Mitsubishi Carbon Black # 30, # 40, # 50

When a colorant is used in the present invention, the ratio of the colorant / a component other than the colorant in the colored photosensitive layer can be determined by those skilled in the art in consideration of the target optical density and the removability of the colored photosensitive layer from a developer. It can be determined by a known method. For example, in the case of a dye, its content is preferably 5% by weight.
.About.75%, and in the case of a pigment, the content is preferably 5% to 90% by weight.

The film thickness of the colored photosensitive layer is determined by a method known to those skilled in the art according to the target optical density, the kind of the coloring agent used in the colored photosensitive layer (dye, pigment, carbon black) and its content. However, if the thickness of the colored photosensitive layer is as thin as possible within the allowable range, the resolution is higher and the image quality is better. Thus, the membrane thickness is preferably usually being used in the range of ^{0.1g / m 2 ~5g / m 2} .

In carrying out the present invention, a plasticizer, a coatability improver and the like may be further added to the photosensitive composition, if necessary. As plasticizers, various low molecular weight compounds, for example, phthalic acid esters, triphenyl phosphates, maleic acid esters, and as coatability improvers, surfactants such as fluorine-based surfactants and ethyl cellulose polyalkylene ethers are typical. Examples thereof include nonionic activators.

When the photosensitive composition of the present invention is used to form an image-forming material, particularly a colored image-forming material, the colored photosensitive layer comprises a colored layer containing a colorant and a binder, and a photosensitive layer containing the photosensitive composition. It can also be divided into two layers. In this case, either layer may be disposed on the support side.

When the photosensitive composition of the present invention is used to form an image-forming material, the support used is arbitrary, but a transparent support is preferably used. As the transparent support, a polyester film, particularly a biaxially stretched polyethylene terephthalate film is preferable from the viewpoint of dimensional stability against water and heat. Besides, an acetate film, a polyvinyl chloride film, a polyethylene film, a polypropylene film, a polyethylene film and the like can be used. The thickness of the transparent support provided with the protective layer is about 5 to 100 μm,
Particularly, about 10 to 50 μm is preferable, and the transparent support provided with the heat softening layer has a thickness of 20 to 200 μm, particularly 50 to 100
μm is preferred.

The protective layer used in the present invention may be any known one as long as it dissolves, swells or peels in a developing solution at the time of development, but its gas permeability depends on the kind of the photosensitive composition to be used. It is preferable to be selected accordingly. That is, it is preferable to provide a protective layer having high gas permeability in the case of a photosensitive composition that generates a gas upon exposure such as o-quinonediazide, and to use a gas when a photopolymerizable photosensitive composition is used. It is preferable to provide a protective layer having low permeability. The thickness is preferably about 0.01 to 5 μm, and more preferably about 0.03 to 1 μm.

The image forming material can be used in the form of transferring an image to a material to be transferred. At this time, in order to efficiently perform transfer onto the material to be transferred and to facilitate peeling of the support after image transfer, that is, in order to enhance releasability between the support and the image forming layer, support The body surface may be subjected to a release treatment or a release layer may be provided on the support surface.
These will be described later.

In the image forming method of the present invention, the image forming material having the photosensitive composition of the present invention is exposed and developed to form an image portion, and at least the formed image portion is a transfer material (for example, main paper). To obtain a transferred image.

When the image forming method of the present invention is embodied as a multicolor image forming method, the basic method is as follows.
It is as follows. The first color colored image is formed on the first color colored image forming material, at least the colored image is transferred to the transfer material, and the support is peeled off. Further, after forming the second-color coloring image on the second-color coloring image forming material, the second-color registration mark image formed in association with the second-color coloring image is registered with the first-color registration mark image on the transfer material. , The second colored image is transferred onto the first colored image, and the support is peeled off to obtain a two-color aligned image. Similarly, the colored images of the third color and the fourth color are also transferred onto the material to be transferred to obtain a multicolor image. In some cases, this multicolor image may be indirectly transferred onto another transfer material to obtain a multicolor image. A method of this kind is disclosed in JP-A-47-41830 and 59-9714.
No. 0, No. 60-28649 and US Pat. No. 37751.
No. 13, etc.

In the image forming method of the present invention, the image forming material is usually imagewise exposed through a color separation mask or the like and then developed to form an image. At this time, only the image portion of the image obtained on the support may be directly transferred and laminated on the transfer material. That is, it is preferable that only the colored image layer that substantially forms an image is transferred and laminated. In this case, in order to efficiently perform the transfer onto the surface to be transferred and to facilitate the peeling of the support after the image transfer, the surface of the support is subjected to a release treatment with an appropriate oil-repellent substance, or the support is It is preferable to provide a release layer on the top. In the present invention, the release treatment or the release layer with these oil repellent substances is referred to as a heat softening layer.

As the oil-repellent substance, for example, silicone resin, fluororesin, fluorosurfactant, polyolefin, polyamide or the like can be used, and as the release layer, for example, alcohol-soluble polyamide or alcohol-soluble nylon can be used. Blend of partially esterified resin of styrene and maleic anhydride copolymer with methoxymethylated nylon, polyvinyl acetate, polyacrylate, copolymer of polymethylmethacrylate and acrylate, polyvinyl chloride, vinyl chloride And vinyl acetate copolymer, polyvinyl butyrate, cellulose acetate phthalate, methyl cellulose, cellulose triacetate,
Polyvinyl alcohol, butyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, cyanoethyl cellulose, cellulose acetate, cellulose triacetate, cellulose acetate butyrate,
Hydroxypropyl methyl cellulose phthalate, hydroxypropyl methyl cellulose hexahydrophthalate, or a mixture thereof can be used.

The thickness of the release layer is preferably from 0.01 μm to
It is in the range of 50 μm, particularly preferably 5 μm to 50 μm.
The range is m. As a particularly preferred embodiment of the heat-softening layer provided to enhance releasability, a polypropylene layer thinner than the thickness of the support, a polyethylene layer, an ionomer resin layer,
Alternatively, an example in which an ethylene-vinyl acetate resin layer is provided can be given.

As a method for providing a polypropylene layer, a polyethylene layer, an ionomer resin layer, an ethylene-vinyl acetate resin layer or the like on a support, especially the transparent support,

(1) Polyvinyl acetate, polyvinyl chloride,
Using a solution of epoxy resin, polyurethane resin, natural rubber, synthetic rubber, etc. dissolved in an organic solvent as an adhesive,
A so-called dry laminating method in which these adhesives are applied on a support and dried by hot air or heating, and then a cover sheet is overlaid and pressure-bonded under heating for lamination.

(2) a copolymer of ethylene and vinyl acetate,
A doctor blade on the support while using ethylene / acrylic acid ester copolymer, polyamide resin, petroleum resin, rosins, waxes or a mixture thereof as an adhesive and heating these adhesives as they are to keep them in a molten state. Method, roll coating method, gravure method, reverse roll method, etc., and then immediately laminating a cover sheet, heating at high temperature if necessary, and then laminating by cooling, so-called hot melt laminating method;

(3) A so-called extrusion laminating method in which polypropylene, polyethylene and the like are kept in a molten state and extruded onto a support by an extruder and a cover sheet is pressure-bonded and laminated while it is in a molten state;

(4) When a film to be a support is formed by the melt extrusion method, a plurality of extruders are used and polypropylene, polyethylene, etc. in a molten state are used, and two or more kinds of the support are formed on the support by one-time molding. A so-called co-extrusion method or the like in which a cover sheet is pressure-bonded and laminated while a layer made of a resin is formed in a molten state in the same manner:

It can be provided by any of the above methods (1) to (4). A polyethylene terephthalate film, a polypropylene film or the like is used for the cover sheet.

As the method of providing the protective layer, the above-mentioned (1) to (4) can be applied, but the coating method may also be used.

In the image forming method of the present invention, the developer used for developing the image forming material can be arbitrarily used as long as it has a developing action for developing the material to be processed. It is preferable to use a developer containing an alkali agent and an anionic surfactant.

Alkali agents that can be used include (1) sodium silicate, potassium silicate, potassium hydroxide, sodium hydroxide, lithium hydroxide, sodium or ammonium phosphate dibasic or tertiary acid, sodium metasilicate, Inorganic alkaline agents such as sodium carbonate and ammonia, (2) mono, di, or trimethylamine, mono,
Organic amine compounds such as di- or triethylamine, mono- or diisopropylamine, n-butylamine, mono-, di-, or triethanolamine, mono-, di-, or triisopropanolamine, ethyleneimine, ethylenediimine, and the like can be mentioned.

The anionic surfactants that can be used include (1) higher alcohol sulfates (for example,
Sodium salt of lauryl alcohol sulfate, ammonium salt of octyl alcohol sulfate, ammonium salt of lauryl alcohol sulfate, secondary sodium alkyl sulfate, etc.) (2) Aliphatic alcohol phosphate ester salts (for example, sodium salt of cetyl alcohol phosphate ester) Etc.) (3) Alkylaryl sulfonates (for example, sodium dodecylbenzenesulfonate, sodium isopropylnaphthalenesulfonate, sodium dinaphthalenesulfonate, sodium metanitrobenzenesulfonate, etc.) (4) Alkylamidosulfonates

[0053]

[Chemical 4] (5) Sulfonates of dibasic aliphatic ester (for example, dioctyl sodium sulfosuccinate, dihexyl sodium succinate, etc.) (6) Formaldehyde condensate of alkylnaphthalene sulfonate (for example, formaldehyde of sodium dibutylnaphthalene sulfonate) Condensate and the like). The alkaline agent and the anionic surfactant can be used in any combination.

[0054]

EXAMPLES Examples and comparative examples of the present invention will be described below. In the following, "parts" means "parts by weight" unless otherwise specified. As a matter of course, the present invention is not limited to the embodiments described below and can take various aspects.

Examples 1 to 4 and Comparative Examples 1 to 2 A 25 μm thick polypropylene film was laminated on a 50 μm thick polyethylene terephthalate film by a dry laminating method. The composition dispersion liquid was applied using a wire bar to a dry film thickness of 1 μm, and then dried to prepare a 4-color colored image forming material.

Photosensitive composition 1,2-naphthoquinonediazide-4-sulfonyl chloride and p-cresol Novolac resin esterification product (esterification rate 50%) 0.6 g Binder I 2.0 g Binders II to VII 2. 0g The following pigment The amount below Ethyl cellosolve 40.0g

(Binder I) Vinyl acetate / vinyl versatic acid (polymerization ratio 80/2
0) Copolymer MN = 22,000 MW = 60,000

(Binder II) Vinyl acetate / vinyl stearate (polymerization ratio 90/10)
Copolymer MN = 22,000 MW = 65,000

(Binder III) Vinyl acetate / vinyl stearate (polymerization ratio 80/20)
Copolymer MN = 22,000 MW = 65,000

(Binder IV) Vinyl acetate / vinyl stearate (polymerization ratio 70/30)
Copolymer MN = 22,000 MW = 65,000

(Binder V) Vinyl acetate / vinyl stearate (polymerization ratio 60/40)
Copolymer MN = 22,000 MW = 65,000

(Binder VI) Vinyl acetate / vinyl propionate (polymerization ratio 80/20)
Copolymer MN = 24,000 MW = 62,000

(Binder VII) Vinyl acetate / crotonic acid (polymerization ratio 95/5) copolymer MN = 21,000 MW = 63,000

(Pigment) Black: Carbon black MA-100 (manufactured by Mitsubishi Kasei) 0.99 g Cyan: Cyanine blue 4920 (manufactured by Dainichiseika) 0.55 g Magenta: Seika Fast Carmine 1483 (manufactured by Dainichiseika) 0.68 g Yellow: Seika First Yellow H-7055 (Dainichi Seika) 0.68g

On the surface of the polyethylene terephthalate film of the four-color image forming material obtained as described above, a color-separating net positive film of each color was superposed, and image exposure was carried out with a 4 KW metal halide lamp from a distance of 50 cm. Development was performed by dipping for 2 seconds to form a 4-color colored image.

<Developer> Na ₂ CO ₃ 15 g Surfactant (Perex NBL manufactured by Kao Atlas) 50 g Distilled water 1000 g

Next, the image surface of the black image and the art paper are brought into close contact with each other, and the distance between the pair of heated nip rolls is 5 kg /
After passing through at a speed of 50 cm / min under a pressure condition of cm ² , the support was peeled off. The peeling was easy, and only the black image portion was transferred onto the art paper. Subsequently, the colored images were transferred in the order of cyan, magenta, and yellow, whereby a color proofing image consisting of four colors was obtained on the art paper. Table 1 shows the image exposure time required for the clear 3 steps, the halftone dot reproducibility and the transfer temperature in the clear 3 steps. In this example, since only the image portion was transferred, the finish was very similar to the actual printed matter.

[0068]

[Table 1]

[0069]

According to the present invention, Japanese Patent Application No. 63-2884.
It is possible to provide a colored image forming material and a transfer image forming method which improve the sensitivity without impairing the performance of the technique described in No. 57. Especially when transferring, it does not require high temperature and high pressure,
It is possible to provide a colored image-forming material and a transfer image-forming method which have excellent resistance to discoloration and good dot reproducibility.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Junko Makino 1 Sakura-cho, Hino-shi, Tokyo Konica stock company (72) Inventor Tetsuya Masuda 1000 Kamoshida-cho, Midori-ku, Yokohama-shi, Kanagawa In-house (72) Inventor Hideaki Mochizuki 1000 Kamoshida-cho, Midori-ku, Yokohama-shi, Kanagawa Sanryo Kasei Co., Ltd.

Claims (3)

[Claims] 1. A colored photosensitive material comprising a photosensitive composition containing an esterified product of o-naphthoquinone diazide sulfonyl chloride and a novolak resin, and a polymer compound having a carboxylic acid vinyl ester polymerization unit represented by the following general formula in its molecular structure. A colored image-forming material having a support and a protective layer on a support. [Chemical 1] R: is a hydrocarbon group having 11 or more carbon atoms 2. The colored image-forming material according to claim 1, which has a heat-softening layer between the support and the colored photosensitive layer. 3. A colored light-sensitive material containing a photosensitive composition containing an esterified product of o-naphthoquinone diazide sulfonyl chloride and a novolak resin and a polymer compound having a carboxylic acid vinyl ester polymerization unit represented by the following general formula in its molecular structure. A transfer image forming method for obtaining a transfer image by exposing and developing a colored image forming material having a layer and a protective layer on a support to form an image portion, and transferring at least the formed image portion to a transfer material.