JPH0456862A - Photosensitive body and image forming method - Google Patents

Abstract

PURPOSE:To improve photosensitive characteristics by using an ionic-paired ion compd. to form the photopolymn. initiator of a photosensitive layer contg. a photosensitive silver halide, org. silver salt, reducing agent, and polymerizable polymer precursor. CONSTITUTION:The photopolymn. initiator of the photosensitive body contg. all of the photosensitive silver halide, org. silver salt. reducing agent and polymerizable polymer precursor is formed of the ionic dye-paired ion compd. The photosensitive silver halide is exemplified by silver chloride, silver bromide, silver chlorobromide, silver iodobromide, silver chloroiodobromide, etc. Silver salts having low photosensitiveness, such as org. acid silver and triazole silver salt are preferably used as the org. silver salt. A primary color developing agent and secondary color developing agent are usable as the reducing agent. Cationic dyes having boron anions are used as the photopolymn. initiator. Compds, having at least one piece of reactive vinyl groups in one molecule are utilizable as the polymerizable polymer precursor. The images having the excellent lightness and saturation are sufficiently formed by a light source of low electric power consumption.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dry silver salt photoreceptor for forming images and an image forming method using the photoreceptor.

[Prior Art] In recent years, there has been active development of image forming methods that allow image formation to be performed through simple processing.

For example, there is known a method of forming a latent image made of a polymer by causing a dry (thermal) polymerization reaction using a photosensitive reaction of silver halide as a trigger, as disclosed in Japanese Patent Application Laid-Open No. 61-69062.

For example, according to Japanese Patent Application Laid-Open No. 62-70836, etc.
A latent image is formed by silver nuclei generated from silver halide through image exposure, and the catalytic action of the silver nuclei is used to convert the reducing agent into an oxidant having a polymerization inhibiting ability different from that of the reducing agent under heating. By doing so, a difference is created in the ability to inhibit polymerization between the reducing agent and the generated oxidant, and a thermal polymerization reaction using a thermal polymerization initiator is caused, forming a latent polymer image corresponding to the difference in ability to inhibit polymerization. It's a method.

An image made of a polymer can be obtained by selectively adhesively transferring or etching the polymerized portion or the unpolymerized portion from such a latent polymer image made of the polymerized portion and the unpolymerized portion.

However, these methods have the disadvantage that it is difficult to obtain good contrast in the polymer latent image.

This drawback is that the redox reaction to generate the oxidant that occurs in the latent image area and the polymerization reaction to form the polymer latent image occur in the same heat treatment process, so these reactions become competitive reactions, which can cause irritation. This is thought to be because the reaction does not proceed efficiently.

On the other hand, in the method described in the specification of the invention previously filed by the applicant (Japanese Patent Application No. 17155/1983), a photopolymerization initiator is used as an essential component of the photoreceptor, and the polymer latent image is exposed to light. Since it is formed by polymerization, the process of producing an oxidant from a reducing agent and the process of forming a polymer latent image can be effectively separated, resulting in a sufficiently stable contrast between exposed and unexposed areas. Now I can do it.

In this method, a polymer latent image is formed by photopolymerization, but the photopolymerization initiators commonly used have an absorption wavelength of 450 nm or less, and particularly general-purpose ones have an absorption wavelength of 450 nm or less.
00 nm or less, and many have a maximum absorption wavelength (λmax) between 250 and 350 nm. Therefore, the light source for the photopolymerization process is a short-wavelength ultra-high pressure mercury lamp or high-pressure mercury lamp, and although it is fine to use these light sources for industrial purposes, when considering application to home printers, it is difficult to use them. is often difficult.

[Problems to be Solved by the Invention] An object of the present invention is to improve the photosensitivity characteristics of a photoreceptor during the photopolymerization process, and to make it applicable to home printers.

[Means to solve the problem]

As a result of intensive research to achieve the above object, the present inventors have discovered that a photoreceptor containing at least a photosensitive silver halide, an organic silver salt, a reducing agent, a polymerizable polymer precursor, and a photopolymerization initiator on a support. Therefore, the present inventors have found that it is effective to use a photoreceptor characterized in that the photopolymerization initiator is an ionic dye paired with an ionic compound, leading to the completion of the present invention.

First, the photoreceptor of the present invention will be explained in detail.

Examples of the photosensitive silver halide used in the photoreceptor of the present invention include silver chloride, silver bromide, silver chlorobromide, silver iodobromide, and silver chloroiodobromide. It may be subjected to chemical sensitization or optical sensitization treatment similar to that applied to emulsions. That is, as chemical sensitization, sulfur sensitization, noble metal sensitization, reduction sensitization, etc. can be used, and as optical sensitization, methods using conventionally well-known sensitizing dyes can be applied. Further, the halogen composition within the grains may be uniform or have a multilayer structure with different halogen compositions, or two or more types of silver halides having different halogen compositions, grain sizes, grain size distributions, etc. may be used in combination. Furthermore, these may be spectrally sensitized or chemically sensitized with a dye or the like.

Examples of organic silver salts include organic acid silver and triazole silver salts.
Organic silver salts described in JP-A-55429 and the like can be used, and it is preferable to use silver salts with low photosensitivity.

Specifically, they are silver salts with aliphatic carboxylic acids, aromatic carboxylic acids, thiocarbonyl group compounds having a mercapto group or α-hydrogen, and imino group-containing compounds.

Aliphatic carboxylic acids include acetic acid, butyric acid, succinic acid, sebacic acid, adipic acid, oleic acid, linoleic acid, linoleic acid, tartaric acid, palmitic acid, stearic acid, behenic acid, camphoric acid, etc. Silver salts with a small number of carbon atoms are unstable, so those with an appropriate number of carbon atoms are preferred.

Examples of aromatic carboxylic acids include benzoic acid derivatives, quinolinic acid derivatives, naphthalenecarboxylic acid derivatives, salicylic acid derivatives, gallic acid, tannic acid, phthalic acid, phenylacetic acid derivatives, and pyromellitic acid.

As a mercapto group or a-hydrogen-containing thiocarbonyl group compound, 3-mercapto-4-phenyl-1,2
, 4-triazole, 2-mercaptobenzimidazole, 2-mercapto-5-aminothiadiazole, 2-
Mercaptobenzothiazole, S-alkylthioglycolic acid (alkyl group having 12 to 22 carbon atoms), dithiocarboxylic acids such as dithioacetic acid, thioamides such as thiostearamide, 5-carboxy-1-methyl-2-phenyl-
Examples include mercapto compounds described in U.S. Pat. No. 4,123,274, such as 4-thiopyridine, mercaptotriazine, 2-mercaptobenzoxazole, mercaptooxadiazole, or 3-amino-5-benzylthio-1,2,4-triazole. It will be done.

As a compound containing an imino group, Japanese Patent Publication No. 44-30
Benzotriazole or its derivatives described in No. 270 or No. 45-18416, such as benzotriazole, alkyl-substituted benzotriazoles such as methylbenzotriazole, halogen-substituted benzotriazoles such as 5-chlorobenzotriazole, carboxyl-substituted benzotriazoles such as butylcarboimidobenzotriazole, etc. imidobenzotriazoles,
Nitrobenzotriazoles described in JP-A No. 58-118639, sulfobenzotriazole, carboxybenzotriazole or a salt thereof, or hydroxybenzotriazole described in JP-A-58-115638, etc.
1.2.4- as described in U.S. Patent No. 4.220.709
Representative examples include triazole, IH-tetrazole, carbazole, saccharin, imidazole and derivatives thereof.

As the reducing agent that can be used in the present invention, there can be used reducing agents described in "Fundamentals of Photographic Optics, Non-Silver Salt Line," p. 250J, secondary color developing agents, secondary color developing agents, etc. These include, for example. , phenols, hydroquinones, catechols, p-aminophenols, p-substituted aminophenols, p-phenylenediamines, 3-pyrazolidones, resorcinols, pyrogallols, 0-aminophenols, m -Aminophenols, m-phenylenediamines, 5-pyrazolones, alkylphenols, alkoxyphenols, naphthols, aminonaphthols, naphthalene diols, alkoxynaphthols, hydrazines, hydrazones, hydroxychromans/hydroxyclamans , sulfonamide phenols, aminonaphthols, ascorbic acids, hydroxyindanes, bisphenols, orthobisphenols, and the like can be used.

Furthermore, leucobase obtained by reducing a dye can also be used as a reducing agent. Furthermore, it is also possible to use a combination of two or more of the above-mentioned reducing agents. When using a secondary color developing agent, it is desirable to use a coupler that reacts with these oxidation products to form a light-absorbing compound.

Specific examples of reducing agents include hydroquinone, hydroquinone monomethyl ether, 2,4-dimethyl-6
-t-butylphenol, catechol, dichlorocatechol, 2-methylcatechol, methyl gallate, ethyl gallate, propyl gallate, 0-aminophenol,
3.5-dimethyl-2-aminephenol, p-aminophenol, p-amino-0-methylphenol, m-
Dimethylaminophenol, m-diethylaminophenol, 2,6-dicyclohexyl-4-methylphenol, 1-naphthol, 2-methyl-1-naphthol, 2
．． 4-dichloro-1-naphthol, 1,1-di-2-naphthol, 2,2-methylenebis (4-methyl-6
-t-butylphenol), 2,2'-methylenebis(
4-ethyl-6-t-butylphenol), 2,2°-
Butylidene bis(4-methyl-6-t-butylphenol), 4.4°-butylidene bis(3-methyl-6-t
-butylphenol), 4,4-methylenebis(2,6
-di-t-butylphenol), 2,6-di-t-butyl-4(2-hydroxy-3-t-butyl-5-methylbenzyl)phenol, 1,1.3-tris(2-methyl-4-hydroxy -5-t-butylphenol)butane, 4.4゛-thiobis(3-methyl-6-t-butylphenol), 2.4-bis(ethylthio)-6-(
4-Hydroxy-3,5-di-t-butylanilino)-
1,3,5-triazine, 2,4-bis(octylthio)-6-(4-hydroxy-3,5-di-t-butylanilino)-1,3,5-triazine, 2,6-dichloro-4 -Benzenesulfonamidophenol, 2-chloro-4-benzenesulfonamidophenol, 2.6-
Dipromo 4-benzenesulfonamidophenol, thioindoxyl, indoxyl, 1,3-dimethylpyrogallol, 4-methoxynaphthol, 4-ethoxynaphthol, 2-cyanoacetylchroman, N,N-dimethylphenylenediamine, N,N- Examples include diethylphenylenediamine, N',N'-diethyl-3-methylphenylenediamine, and the like.

In addition, when a secondary color developing agent (e.g., phenylenediamine type, p-aminophenol type) is used, examples of the coupler include l-hydroxy-N-butyl-2
- Natutamide, benzoylacetone, benzoylacetanilide, 0-methoxybenzoylaceto-0-methoxyanilide, dibenzoylmethane, 2-chloro-1-naphthol, 2,6-dipromo-1,5-naphthalenediol, 3-methyl-1- Examples include phenylpyrazolone.

Furthermore, two or more of the above-mentioned reducing agents can be used in combination.

As the photopolymerization initiator contained in the photoreceptor of the present invention, at least one kind from among the compounds represented by the following formula (I) is used.

[However, in the above formula (I), D yee represents a cationic dye moiety, R,, R,, R3, R, the same or different,
It is selected from the group consisting of a halogen atom, an alkyl group, an aryl group, an aralkyl group, an aryloxy group, an alkenyl group, an alkynyl group, a cycloalkyl group, and a heterocyclic group. Furthermore, R1 and Rz, or R2 and R5 may be combined to form a ring compound].

Preferred specific examples of the cationic dye having a boron anion represented by the general formula (I) as described above are further detailed. As the boron anion, for example, tetramethylfolate, tetraethylborate, triisobutylmethyl borate, di-t-butyl-dibutylborate,
Trifluoromethyltrifluoroborate, tetra-n
-Butylborate, tetraphenylborate, triphenylmethylborate, triphenylethylborate, triphenylpropylborate, triphenyl-n-butylborate, triphenylhexylborate, trimedylbutylborate, tritolyl isopropylborate, triphenylbenzylborate , tetrabenzylborate, triphenylphenethylborate, triphenyl-p~chlorobenzylborate, trimethallylphenylborate, tetraphenylborate, tricyclohexylbutylborate, tri(phenylelanyl)butylborate, di(α-naphthyl)dipropyl Examples include borate, diisopinocamphenyl diamylborate, and the like.

On the other hand, examples of cationic dyes include, among others, aniline dyes, cyanine dyes, rhodamine dyes, etc., which can stably bond with the boron anion. Particularly preferred aniline dyes include, for example, 1.3 -bis(p-diethylaminophenyl)propenium, 1,1
, 3.3-tetrakis(p~diethylaminophenylpropenium, 1,1,3.3-tetrakis(p-morpholinophenyl)propenium, 1.3-bis(p-diethylaminophenyl)-2-methylpropenium, 1 ．．
2.3-1-Lis(p-diethylaminostyryl)carbonium, 1.3-bis(p-diethylaminophenyl)-1-(p-tolyl)propenium, 1,1,5.5
-tetrakis(p-diethylaminophenyl)pentadienium, 1. l, 5.5-tetrakis(p-dipropylaminophenyl)pentadienium, 1.5-bis(p-diethylaminophenyl)-1,5-diphenylpentadienium, 1.5-bis(p-dimethylamino phenyl)-1,5-bis(p-anilyl)pentadienium, 1-[γ-(p-dimethylaminophenyl)
propenylidene]-guaiazulenium, 1,1.5.
5-tetrakis(p-jethylaminophenyl)-3-
Examples include methylpentadienium. Examples of cyanine dyes include 1.1°, 3.3.3°, 3
°-hexamethyl-2,2-indocarbocyanine, 1
．． 1', 3.3.3°, 3-hexamethyl-2,2-indodicarbocyanine, 1.1', 3,3,3°, 3-
Hexamethyl-2,2-indotricarbocyanine, 1
．． 1-diethyl-3,3,3',3'-tetramethyl-
2,2°-indocarbocyanine, 1,1'-dipropyl-3,3,3°, 3-tetramethyl-2,2-indocarbocyanine, 1,1-jethoxyethyl-3,3,
3'', 3-tetramethyl-2,2°-indodicarbocyanine, ([3-(1,3,3-trimethyl-2-indolibun)methylidene]-2-700-1-cyclobentateyl) -Methylidene-1,3,3-trimethyl-
2-Indolium, [(3-ethyl-benzo-1-thiazolium)methylidene-2-ph00-1-cyclobentateyl 1-methylidene-3-ethyl-benzo-1-thiazolium, 3.3'-diethyl -2,2'-thiacyanine, 3,3-diethyl-2,2°-thiacarbocyanine, 3,3'-diethyl-2,2°-thiadicarbocyanine, (1-methyl-4-quinolino)- (1,3,3 trimethyl-31(-1,7-diaza-2-indentutrimethine cyanine, etc.).

Examples of rhodamine dyes include 2-(6-amino-3-imino-3-day-xanthi-9-yl)benzoic acid,
2-(6-diethylamino-3-diethylimino-3H
-xanthi-9-yl)benzoic acid, methyl-2-(6-
Methylamino-3-methylimino-3-day-xanthi 9
-yl)benzoic acid, ethyl-2-(6-diethylamino-3-diethylimino-3H-xanthi-9-yl)benzoic acid, and the like.

The above-mentioned cationic dyes and boron anions can be arbitrarily combined, or a cationic dye sensitive to a desired light absorption wavelength range and a boron anion that can stably bind to the cationic dye can be combined. ,
A cationic dye having a boron anion can be obtained by a known method such as salt exchange.

As the polymerizable polymer precursor contained in the present invention, compounds having at least one reactive vinyl group in the molecule can be used, such as reactive vinyl group-containing monomers,
One or more types selected from the group consisting of reactive vinyl group-containing oligomers and reactive vinyl group-containing polymers can be used.

The reactive vinyl groups of these compounds include styrene vinyl groups, vinyl acrylate groups, vinyl methacrylate groups, allyl vinyl groups, vinyl ethers, and ester vinyl groups such as vinyl acetate, which have polymerization reactivity. Examples include substituted or unsubstituted vinyl groups.

Specific examples of polymerizable polymer precursors that satisfy these conditions are as follows.

For example, styrene, methylstyrene, chlorstyrene,
Bromostyrene, methoxystyrene, dimethylaminostyrene, cyanostyrene, nitrostyrene, hydroxystyrene, aminostyrene, carboxystyrene, acrylic acid, methyl acrylate, ethyl acrylate, cyclohexyl acrylate, acrylamide, methacrylic acid,
Methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, phenyl methacrylate, cyclohexyl methacrylate, vinylpyridine, N
-vinylpyrrolidone, N-vinylimidazole, 2-vinylimidazole, N-methyl-2-vinylimidazole, propyl vinyl ether, butyl vinyl ether,
Monovalent monomers such as isobutyl vinyl ether, β-chloroethyl vinyl ether, phenyl vinyl ether, p-methylphenyl vinyl ether, p-chlorophenyl vinyl ether: e.g. divinylbenzene, distyryl oxalate, distyryl malonate, distyryl succinate, glutaric acid Distyryl, distyryl adipate, distyryl maleate, distyryl fumarate, β, β°-distyryl dimethylglutarate, distyryl 2-bromoglutarate, α, α゛-distyryl dichloroglutarate,
Distyryl terephthalate, dioxalate (ethyl acrylate), dioxalate (methyl ethyl acrylate), dimalonate (ethyl acrylate), dimalonate (methyl ethyl acrylate), disuccinate (ethyl acrylate), diglutarate ( ethyl acrylate), diadipate (ethyl acrylate), dimaleic acid (ethyl acrylate), difumaric acid (ethyl acrylate), β
, β°-dimethylglutarate di(ethyl acrylate)
, ethylene diacrylamide, propylene diacrylamide, 1.4-phenylene diacrylamide, 1.4-
Phenylene bis(oxyethyl acrylate)-), 1.
4-phenylenebis(oxymethylethyl acrylate), 1.4-bis(acryloyloxyethoxy)cyclohexane, 1.4-bis(acryloyloxymethylethoxy)cyclohexane, 1.4-bis(acryloyloxyethoxycarbamoyl)benzene, 1 .4-bis(acryloyloxymethylethoxycarbamoyl)
Benzene, 1,4-bis(acryloyloxyethoxycarbamoyl)cyclohexane, bis(acryloyloxyethoxycarbamoylcyclohexyl)methane, di(ethyl methacrylate) oxalate, di(methyl ethyl methacrylate), di(ethyl methacrylate) malonate, Malonic acid di(methyl ethyl methacrylate), succinic acid di(ethyl methacrylate), succinic acid di(methyl ethyl methacrylate), glutaric acid di(ethyl methacrylate), adipic acid di(ethyl methacrylate), maleic acid di(ethyl methacrylate), Fumaric acid di(ethyl methacrylate), fumaric acid di(methyl ethyl methacrylate), β,β'-dimethylglutaric acid di(ethyl methacrylate), 1,4-phenylenebis(oxyethyl methacrylate), 1,4-bis(methacryloyl) divalent monomers such as (oxyethoxy)cyclohexane acryloyloxyethoxyethyl vinyl ether; for example, pentaerythritol triacrylate, pentaerythritol trimethacrylate, pentaerythritol tri(hydroxystyrene), dipentaerythritol hexaacrylate, cyanuric acid triacrylate, cyanuric acid Acid trimethacrylate, 1.1.1
-trimethylolpropane triacrylate, l, l
, i trimethylolpropane trimethacrylate,
Cyanuric acid tri(ethyl acrylate), 1,1. l
trimethylolpropane tri(ethyl acrylate),
Cyanuric acid tri(ethyl vinyl ether), 1,1
．． Condensate of 1-trimethylolpropane tri(toluene diisocyanate) and hydroxyethyl acrylate, 1. l, trivalent monomers such as condensates of 1-trimethylolpropane tri(hexane diisocyanate) and p-hydroxystyrene;
monomers, etc., as well as 1. Polymerizable polymer precursors include oligomers or polymers with reactive vinyl groups left at their ends, or oligomers or polymers with reactive vinyl groups attached to their side chains. Note that two or more types of these polymerizable polymer precursors may be used.

In addition to these photosensitive silver salts and reducing agents, if necessary,
For example, binders, color toning agents, antifoggants, alkali generators, autooxidizing agents, heat diffusible dyes, etc. may be added.

The binder that can be used in the present invention can be selected from a wide range of resins, but specific examples include t-nitrocellulose, cellulose phosphate, cellulose sulfate, cellulose acetate, cellulose propionate, cellulose butyrate, Cellulose esters such as cellulose myristate, cellulose palmitate, cellulose acetate/propionate, cellulose acetate/butyrate; cellulose ethers such as methyl cellulose, ethyl cellulose, propyl cellulose, butyl cellulose; e.g. polystyrene, polyvinyl chloride, polyvinyl acetate. , vinyl resins such as polyvinyl butyral, polyvinyl acetal, polyvinyl alcohol, polyvinylpyrrolidone; copolymer resins such as styrene-butadiene copolymer, styrene-acrylonitrile copolymer, styrene-butadiene-acrylonitrile copolymer, vinyl chloride-vinyl acetate copolymer: For example, acrylic resins such as polymethyl methacrylate, polymethyl acrylate, polybutyl acrylate, polyacrylic acid, polymethacrylic acid, polyacrylamide, and polyacrylonitrile; polyesters such as polyethylene terephthalate; Poly(ethylene dioxy-3,3-phenylene thiocarbonate), Poly(4,4°-isopropylidene diphenylene carbonate coated terephthalate)
, poly(4,4°-isopropylidene diphenylene carbonate), poly(4,4"-5ec-butylidene diphenylene carbonate), poly(4,4"-isopropylidene diphenylene carbonate-block-oxyethylene), etc. Polyacrylate resins; polyamides; polyimides; epoxy resins; phenolic resins;
Examples include polyolefin B such as polyethylene, polypropylene, and chlorinated polyethylene, and natural polymers such as gelatin.

To form the photoreceptor of the present invention, the above-mentioned essential components are dissolved and dispersed in a solvent together with an appropriately used binder.
It can be formed by coating and drying on a support such as metal foil, plastic film, paper, baryta paper, or synthetic paper. Note that the shape of the photoreceptor of the present invention is not particularly limited, such as a flat plate, a cylindrical shape, a roll shape, and the like. When formed into a layer, the layer thickness is 0.1 u1 to 2 mm, preferably 1 to 0.1 mm. ．． It is said to be about 1 mm. In addition,
The layered structure is not limited to a single layer, but may be a multilayered structure.

The preferred blending ratio of the above components in the photoreceptor of the present invention is as follows.

Preferably 0 silver halide per mol of organic silver salt
．． It is desirable to contain 0.001 to 2 moles, more preferably 0.05 to 0.4 moles. Further, it is desirable to contain the reducing agent preferably in an amount of 0.05 to 3 mol, more preferably 0.2 to 1.3 mol, per mol of the organic silver salt. Furthermore, it is desirable to use a photopolymerization initiator in an amount of preferably 0.1 to 30 parts by weight, more preferably 0.5 to IO parts by weight, based on 100 parts by weight of the polymerizable polymer precursor. Further, it is desirable to contain the photopolymerization initiator preferably in an amount of 0.01 mol to 10 mol, more preferably 0.5 to 3 mol, per mol of the reducing agent.

Next, the image forming method of the present invention will be explained.

The image forming method of the present invention consists of the following steps.

(a) The process of imagewise exposing the photoreceptor of the present invention to form a latent image; (b) The process of heating the photoreceptor on which the latent image has been formed, and the light consisting of an oxidant generated by heating from the reducing agent. a process of forming a latent image with an absorbing compound or a light-absorbing compound produced by a reaction between the oxidant and the coupler; (C) exposing the entire surface of the photoreceptor having a latent image made of the light-absorbing compound; A process of polymerizing the polymerizable polymer precursor according to the distribution of the light-absorbing compound to form a polymer image.

Examples of light sources used in the above steps (a) and (C) of the present invention include sunlight, tungsten lamps, mercury lamps, halogen lamps, xenon lamps, fluorescent lamps,
LEDs, laser beams, etc. can be used, and especially in the present invention, sufficient image formation can be performed even with a light source with low power consumption. The wavelengths of light used in these processes may be the same or different. Further process (a)
Even if light of the same wavelength is used in step (c), silver halide usually has a sufficiently higher photosensitivity than the photopolymerization initiator, so the intensity of light is strong enough to prevent photopolymerization in step (a). Sufficient latent image writing can be performed.

Furthermore, in the step (c) above, means may be used to heat the photosensitive material during exposure. This may be done by fresh heating or by using preheating in the step (b).

Methods for converting the polymerized image obtained in this way into a color image include a method using a color reaction using microcapsules, a toning treatment, a polymerization portion using the Beer Apart method,
Separation of unpolymerized parts, inking treatment, or a method of transferring the internalized dye to image-receiving paper can be applied.

〔Example〕

Next, the present invention will be explained by examples.

Fuwata Gayu Silver bromide Silver behenate 4-methoxy-1-naphthol methyl methacrylate polymer Trimethylolpropane triacrylate cationic dye complex 1.0 parts 40 parts 5.0 parts 2.5 parts 1000 parts 8.0 parts 0.4 parts PhJ-n-CJe Pentamethylaniline 3.0 parts Toluene-
50 parts of n-butanol 40 parts of methyl ethyl ketone The above formulation was thoroughly dissolved and dispersed using a paint shaker to prepare a coating solution. 2
Apply the above coating solution to two scales of polyester film to a dry film thickness of 5
A photoreceptor was obtained by applying the coating to 6 scales.

A negative film is passed through the photoreceptor of the present invention thus prepared, and the power consumption is 10 W, which has a fluorescence peak at 306 nm.
Imagewise exposure was carried out for 2 seconds using a fluorescent lamp.

Thereafter, the negative film was removed, and the photoreceptor was passed through a heat developing machine adjusted to 115° C. for 30 seconds. Thereafter, the entire surface was exposed for 30 seconds using a tungsten lamp. When etched with ethanol, the exposed areas of the image were eluted and a polymerized image was obtained in the unexposed areas.

[Effects of the Invention] As explained above, the photoreceptor of the present invention is capable of sufficient image formation using a light source with low power consumption, and has sufficient brightness and saturation even when used with a home printer. It is possible to form a clear image.

Claims (1)

[Scope of Claims] 1. A photoreceptor comprising a photosensitive layer containing at least a photosensitive silver halide, an organic silver salt, a reducing agent, a polymerizable polymer precursor, and a photopolymerization initiator on a support, A photoreceptor characterized in that the polymerization initiator is an ionic dye and a counterionic compound. 2. The photoreceptor according to claim 1, wherein the counterion compound is a borate complex. 3. The photoconductor according to claim 1 or 2 is subjected to (a) imagewise exposure to form a latent image, (b) heating the photoconductor on which the latent image is formed, and removing the reducing agent from the heating process. A process of forming a latent image of a light-absorbing compound formed from the resulting oxidant, or a light-absorbing compound formed by a reaction between the oxidant and a coupler; (c) having a latent image formed of the light-absorbing compound; An image forming method comprising the steps of: exposing the entire surface of a photoreceptor to light and polymerizing the polymerizable polymer precursor according to the distribution of the light-absorbing compound to form a polymer image.