JPS62210460A - Image forming method - Google Patents

Abstract

PURPOSE:To easily obtain a transferred image which is glossy and sharp by subjecting a photosensitive material to imagewise exposure to form the latent image of a silver halide, subjecting the material to a developing process, superposing an image receiving material having a layer consisting of the flocculated matter of the pulverized particles of a thermoplastic compd. on a base, pressurizing the materials in this state to transfer the unpolymerized polymerizable compd. to the image receiving material and heating said material. CONSTITUTION:The image receiving material has the layer consisting of the flocculated matter of the pulverized particles of the thermoplastic compd. on a base. The photosensitive material having the photosensitive layer contg. the silver halide, reducing agent, polymerizable compd. and color image forming material on the base is used and is subjected to the developing process to polymerize and cure the polymerizable compd., by which the color image forming material of the cured part is immobilized. The image receiving material is superposed on the photosensitive material immobilized with the color image forming material in the cured part and in this state, the materials are pressurized to transfer the color image forming material in the cured part to the image receiving material. The image receiving material formed with the image is heated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention ζ relates to an image forming method using a photosensitive material having a photosensitive layer containing silver halide, a reducing agent, and a polymerizable compound on a support.

[Background of the Invention] An image forming method using a photosensitive material having a photosensitive layer containing silver halide, a reducing agent, and a polymerizable compound on a support is disclosed in Japanese Patent Publication Nos. 45-11149, 47-20741,
No. 49-10697, JP-A-57-138632,
It is described in Publication No. 58-169143. In these methods, during development using an exposed silver halide developer, coexisting polymerizable compounds (eg, vinyl compounds) start polymerizing to form image-like polymeric compounds. Therefore, the above method requires a development process using a liquid, and the process requires a relatively long time.

The present inventors attempted to improve the above method and invented a method that can form a polymer compound by dry treatment, and a patent application for this invention has already been filed (No. 48, No. 59-19
1353), this method.

Photosensitive silver salt (halogenated #), reducing agent, crosslinking compound (
A recording material (photosensitive material) comprising a photosensitive layer supported on a support (polymerizable compound) and a binder is imagewise exposed to form a latent image, and then thermally developed to form a latent image of the photosensitive silver salt. A polymer compound is formed in the area where the image is formed.

These image forming methods are methods of polymerizing polymerizable compounds in areas where latent images of silver halide are formed. He invented a method for polymerizing compounds, and a patent application for this invention has already been filed (Japanese patent application filed in 1986-
No. 210657). In this method, a reducing agent is caused to act on a portion where a silver halide latent image has been formed by heat development to suppress the polymerization of the polymerizable compound and at the same time promote polymerization in other portions.

As one embodiment of the image forming method as described above, a photosensitive material having a photosensitive layer containing silver halide, a reducing agent, and a polymerizable compound is placed on a support simultaneously with imagewise exposure or after imagewise exposure. There is an image forming method in which an unpolymerized polymerizable compound is transferred to the image-receiving material by performing a development process and applying pressure while the image-receiving material is stacked on the developed photosensitive material. In the above image forming method, if a smooth film is provided on the surface of the image-receiving material in order to give gloss to the resulting image, the transfer of the image containing the polymerizable compound to the image-receiving material is inhibited, making it impossible to obtain a high transfer density. There was a tendency.

[Summary of the Invention] An object of the present invention is to provide an image forming method that allows an image with high transfer density and gloss to be obtained on an image-receiving material.

In the present invention, a photosensitive material having a photosensitive layer containing silver halide, a reducing agent, and a polymerizable compound on a support is imagewise exposed to form a latent image of silver halide.

At the same time as the imagewise exposure or after the imagewise exposure, a development process is performed to polymerize the polymerizable compound in the area where the latent image is formed, and fine particles of the thermoplastic compound are applied to the developed photosensitive material on the support. Provided is an image forming method, characterized in that an unpolymerized polymerizable compound is transferred to the image-receiving material by pressing image-receiving materials having a layer consisting of an aggregate of It is something to do.

Furthermore, the present invention provides silver halide, a reducing agent,
and a photosensitive material having a photosensitive layer containing a polymerizable compound.

forming a latent image of silver halide by imagewise exposure, performing a heat development treatment simultaneously with or after the imagewise exposure, and polymerizing the polymerizable compound in the portion where the latent image is not formed;
An image-receiving material having a layer made of aggregates of fine particles of a thermoplastic compound on a support is superimposed on a photosensitive material that has been subjected to heat development processing, and pressure is applied to transfer the unpolymerized compound to the image-receiving material. An image forming method is also provided which includes transferring and heating the image receiving material.

[Effects of the Invention] The image forming method of the present invention uses an image receiving material having a layer made of aggregates of fine particles of a thermoplastic compound on a support, and after forming an image on the image receiving material, heating the image receiving material. It is characterized by

Since the image forming method for undeveloped IJI transfers an image onto a layer made of aggregates of fine particles of the image-receiving material, a clear image with high transfer density can be obtained. By heating the image-receiving material, the thermoplastic compound forms a smooth skin, so that a glossy and clear transferred image can be easily obtained.

Furthermore, in the image forming method of the present invention, since the image-receiving material on which the image has been formed is heated, the unpolymerized polymerizable compound is cured. Therefore, the unpolymerized polymerizable compound gradually diffuses to the surroundings, and the image does not become blurred or its sharpness decreases. Furthermore, the image obtained on the image-receiving material is protected by the coating. Therefore, images obtained on image-receiving materials according to the image forming method of the present invention have excellent storage stability.

[Detailed Description of the Invention] The image-receiving material used in the image-forming method of the present invention has a layer made of aggregates of fine particles of a thermoplastic compound on a support.

The above thermoplastic compound is not particularly limited and can be arbitrarily selected from known plastic resins (plastics), waxes, and the like. However, the glass transition point of the thermoplastic resin and the melting point of the wax are preferably 200° C. or lower.

Typical specific examples of thermoplastic resins that can be preferably used in the image-receiving material include polyethylene, polystyrene, polystyrene-co-acrylonitrile, polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, polyvinylidene chloride-co-alrylonitrile, Polymethyl methacrylate, polymethyl methacrylate-co-methacrylic acid, polyethyl acrylate-co-acrylic acid, polyethyl acrylate, polybutyl acrylate, bobutyl methacrylate, polystyrene-co-acrylic acid, polymethyl acrylate, poly-2-ethylhexyl acrylate Examples include Toko methacrylic acid.

Further, typical examples of the wax include wax, beeswax, castor wax, stearic acid, glycerin monostearate, stearamide, stearyl alcohol, palmitic acid, solidified fat, solid fat, and the like.

The layer consisting of an aggregate of fine particles of a thermoplastic compound can be constructed in various forms using the above-mentioned thermoplastic resin or wax.

The particle diameter of the thermoplastic compound fine particles is preferably 10 μm or less, more preferably 0.05 gm to 1.0 gm.

The image receiving material used in the image forming method of the present invention preferably contains a thermoplastic compound in a range of 0.1 to 20 g/rn', more preferably in a range of 0.5 to Log/rrr'.

In addition to the layer made of aggregates of fine particles of the thermoplastic compound, the image-receiving material may have any other layer. For example, an image-receiving layer may be provided between the layer and the support. The image-receiving layer preferably contains a binder. The binders that can be used in the image-receiving layer can be contained in the image-receiving layer alone or in combination. It is preferable to use a mainly hydrophilic binder. As the N-aqueous binder, a transparent or translucent wood-philic binder is typical.

For example, gelatin, gelatin derivatives, cellulose derivatives,
Other synthetic polymeric substances include natural substances such as starch, gum arabic, and synthetic polymeric substances such as water-soluble polyvinyl compounds such as polyvinyl alcohol, polyvinylpyrrolidone, acrylamide polymers, etc., in the form of latex. There are dispersed vinyl compounds that increase dimensional stability.

The above-mentioned inder is added in the image-receiving layer from 0.01 g/m' to 1
It is preferable to use it in the range of 0.007 m''. A more preferable range of use is 0.1 g/rn'' to 10 g/m'.

The image-receiving layer of the image-receiving material may contain any other components in addition to the binder described above.

For example, when a coloring system consisting of a coloring agent and a color developer is used as a coloring system for one image, the image-receiving layer can contain a coloring agent. Further, the image-receiving layer can also be configured as a layer containing a mordant. The mordant can be selected from compounds known in photographic technology and the like. Note that, if necessary, the image-receiving layer can be configured to have two or more layers by using a plurality of mordants having different mordant powers.

The thickness of the image-receiving layer is preferably 1 to 10077-In, more preferably 1 to 20 ILm.

The image-receiving material used in the image-forming method of the present invention has a layer (and optionally an image-receiving layer) made of aggregates of Wk particles of a thermoplastic compound provided on a support. In the image-receiving material, materials that can be used for the support include glass, paper, high-quality paper, coated paper, cast coated paper, baryta paper, synthetic paper, metal and its analogs, polyester,
Examples include films of acetyl cellulose, cellulose ester, polyvinyl acetal, polystyrene, polycarbonate, polyethylene terephthalate, etc., and papers laminated with resin materials and polymers such as polyethylene.

Image-receiving materials can be manufactured using various methods, but generally a coating solution is prepared by dissolving, emulsifying, or dispersing the components of each layer in an appropriate solvent, and this coating solution is then processed as described above. For example, by preparing a coating liquid as a latex in which a thermoplastic resin is dispersed in a solvent.

A layer consisting of an aggregate of fine particles of a thermoplastic compound can be easily formed. Further, when wax is used as the thermoplastic compound, fine particles of wax may be dispersed in the coating liquid.

The image forming method of the present invention forms an image on the image-receiving material as described above (the image formation will be described later), and then heats the image-receiving material on which the image has been formed. As a method for heating the image receiving material, conventionally known methods can be used.

For example, the image receiving material may be brought into direct contact with a hot plate such as a hot plate or a drum, or may be heated while being conveyed using a heat roller.

Heating can also be performed using air heated to a high temperature, high frequency heating, or a laser beam. Depending on the type of image receiving material, it can also be heated using an infrared heater. Furthermore, a method of heating using overcurrent generated by electromagnetic induction can also be applied.

Alternatively, the image-receiving material on which an image has been formed may be heated in a bath heated with an inert liquid, such as a fluorine-based liquid.

Furthermore, the image-receiving material may be heated by providing a heating source separate from the heating means described above, for example.

A layer of conductive particles such as carbon black or graphite may be provided in the image-receiving material, and the Joule heat generated when electricity is applied may be utilized.

The heating temperature is generally preferably 60°C to 200°C, more preferably 80°C to 120°C.

Further, the heating time is generally preferably 0.1 seconds to 60 seconds, more preferably 18 to 10 seconds.

If the material constituting the formed image is susceptible to air oxidation, it is effective to deaerate the area around the heating section or replace the area with an inert gas during heating. Also, when developing with the surface of the image-receiving material on which the image is formed facing the air, moisture may be removed.

It is also effective to heat the material by attaching a cover to the surface of the material to prevent the evaporation of volatile components or to keep the material warm.

As described above, the image forming method of the present invention can form a glossy film on an image obtained on an image-receiving material.

Imagewise exposure of a photosensitive material, development treatment, transfer of an unpolymerized polymerizable compound to an image-receiving material, etc. in the image forming method of the present invention will be described below.

Various exposure steps can be used as the exposure method for imagewise exposure, but generally a latent image of silver halide is obtained by imagewise exposure to radiation including visible light. The type of light source and the amount of exposure can be selected depending on the wavelength at which the silver halide is sensitive (or the sensitized wavelength when dye sensitization is performed) and sensitivity. Further, the original image may be a black and white image or a color image.

In the image forming method of the present invention, development processing is performed simultaneously with the imagewise exposure or after the imagewise exposure. As for development processing,
Development processing using a liquid described in Japanese Patent Publication No. 45-11149 and the like can also be carried out. Further, as mentioned above, the method described in Japanese Patent Application No. 191353/1983, which carries out heat development treatment, is a dry treatment and therefore has the advantage of being simple to operate and capable of processing in a short time. Therefore, the latter is particularly preferred as the developing treatment in the image forming method of the present invention.

As the heating method in the above heat development treatment, various conventionally known methods can be used. In addition, the special application 1986-
As with the photosensitive material described in the specification of No. 135568, the photosensitive material may be provided with a heating layer and used as a heating means. The heating temperature is generally 80°C to 200°C, preferably 1
The heating time is generally 1 second to 5 minutes, preferably 5 seconds to 1 minute.

In the image forming method of the present invention, the development process is carried out as described above, and the polymerizable compound in either the area where the silver halide latent image is formed or the area where no latent image is formed is polymerized. In the image forming method of the present invention, the polymerizable compound in the area where the silver halide latent image is generally formed is polymerized in the above-mentioned development process. As in the photosensitive material described above, it is also possible to polymerize the polymerizable compound in the area where the latent image of silver halide is not formed by adjusting the type of reducing agent used in the photosensitive material, etc.

In the image forming method of the present invention, an image-receiving material is superimposed on the photosensitive material that has been developed as described above and pressure is applied to transfer the unpolymerized polymerizable compound to the image-receiving material. You can get the image above. Regarding the above-mentioned pressurizing means, various conventionally known methods can be used. Further, a general image forming method using an image receiving element such as an image receiving material is described in Japanese Patent Application No. 121284/1984.

In addition, a photosensitive material having a photosensitive layer containing silver halide, a reducing agent, a monopolymerizable compound, and a color image form By polymerizing and curing the compound, thereby immobilizing the color image-forming substance in the cured portion, and then pressing an image-receiving material overlaid on the photosensitive material in which the color image-forming substance in the cured portion has been immobilized, The uncured portions of the color image-forming material can be transferred to an image-receiving material. In this manner, the image forming method of the present invention can easily form a color image on an image-receiving material.

In the image forming method of the present invention, the image receiving material on which the image has been formed as described above is heated as described above.

The image forming method of the present invention can be used in many ways, such as black and white or color photography and printing, printing, printing plates, X-ray photography, medical diagnostic photography (for example, ultrasonic diagnosis PJi machine CRT photography), computer graphic hard copy, copying machine, etc. It can be applied to the following fields.

Hereinafter, the photosensitive materials that can be used in the image forming method of the present invention will be described below.

The photosensitive material used in the image forming method of the present invention is one in which silver halide, a reducing agent, and a polymerizable compound are provided on a support.

In the present invention, there are no particular restrictions on the silver halide,
Silver halides known in photographic technology and the like can be used. In the image forming method of the present invention, any of silver chloride, silver bromide, silver iodide, silver chlorobromide, silver chloroiodide, silver iodobromide, and silver chloroiodobromide may be used as the silver halide. I can do it. The helidene composition of the silver halide grains may be uniform or non-uniform on the surface and inside. In the present invention, the grain size of the silver halide grains is such that the average grain size is 0.0.
Preferably from 01#Lm to 1107z, 0.00
Silver halides of 11 Lm to 5 μm are particularly preferred, and two or more types of silver halides differing in crystal habit, helidene composition, grain size, grain size distribution, etc. can also be used in combination. The amount of the silver halide contained in the photosensitive layer is preferably in the range of 1 mg to 10 g/m'' in terms of silver including MjtlII salt, which is an optional component described below.

The reducing agent that can be used in the image forming method of the present invention has a function of reducing silver halide and/or a function of promoting (or suppressing) polymerization of a polymerizable compound. There are various types of reducing agents having the above functions. The above-mentioned reducing agents include hydroquinones, catechols, p-amino-roughenols, p-phenylenediamines, 3-pyrazolidones, 3-aminopyrazoles, 4
-amino-5-pyrazolones, 5-aminouracils,
4.5-Dihydroxy-6-aminopyrimidines, reductones, amyl reductones, 0- or p-sulfonamidophenols, 0- or p-sulfonamidonaphthols, 2-sulfonamidoindanones, 4-
Sulfonamide-5-pyrazolones, 3-sulfonamide indoles, sulfonamide pyrazolobenzimidazoles, sulfonamide pyrazolotriazoles, α
- Sulfonamide ketones, hydrazines, etc. By adjusting the type and amount of the above-mentioned reducing agent, it is possible to polymerize the polymerizable compound in either the 5 minutes of the area where the silver halide latent image is formed or the area where no latent image is formed. In addition, in a system in which a polymerizable compound is polymerized in a portion where a silver halide latent image is not formed, it is particularly preferable to use l-phenyl-3-pyrazolidones as the reducing agent.

Regarding various reducing agents having the above affi,
Patent Application No. 60-22980, No. 60-29894, No. 60-68874, No. 60-226084, No. 60
It is described in the specifications of No.-227527 and No. 60-227528.

Regarding the above-mentioned reducing agent, please refer to “T.
heTheory of the PhoLograp
hic Process” 4th edition.

291 to 334 pages (1977), Research Disclosure Magazine Vol. 1.170. June 1978 No. 17
No. 029 (pages 9-15), and the same magazine Vol. 1.176,
There is also a description in No. 17643 (pages 22-31) of December 1978. In the image forming method of the present invention, the reducing agents described in the above-mentioned specifications and literature (including those described as developing agents or hydrazine derivatives) can be effectively used. Therefore, the "reducing agent" in this specification includes the reducing agents described in each of the above specifications and literature.

These reducing agents may be used alone, but as described in each of the above specifications, two or more types of reducing agents may be used in combination. When two or more types of reducing agents are used together, the interaction of the reducing agents is, first, to promote the reduction of the halogenated IR (and/or organic silver salt) by so-called superadditivity; In addition, halogenation [
Causing polymerization of a polymerizable compound through a redox reaction with other reducing agents coexisting with an oxidized form of the first reducing agent produced by reduction of (g and/or organic silver salt) (
or suppressing polymerization). however,
In actual use, the reactions described above can occur simultaneously, so it is difficult to specify which effect is responsible.

Specific examples of stimulants for - are pentadecylhydroquinone, 5-t-butylcatechol, p -(N,N-
diethylamino)phenol, 1-phenyl-4-methyl-4-hydroxymethyl-3-pyrazolidone, l-phenyl-4-methyl-4-heptadecylcarbonyloxymethyl-3-pyrazolidone, 2-phenylsulfonylamino-4-hexa Decyloxy-5-t-octylphenol, 2-phenylsulfonylamino-4-t-butyl-5-hexadecyloxyphenol, 2-(N
-butylcarbamoyl)-4-phenylsulfonylaminonaphthol, 2-(N-methyl-N-octadecylcarbamoyl)-4-sulfonylaminonaphthol, l-
Acetyl-2-phenylhydrazine, l-acetyl-2
-((p or 0)-aminophenyl)hydrazine, l
-formyl-2-((p or 0)-aminophenyl)
Hydrazine, l-acetyl-2-((p or 0)-
methoxyphenyl)hydrazine, l-lauroyl-2-
((p or 0)-aminophenyl)hydrazine, ■-
Trityl-2-(2,6-dichloro-4-cyanophenyl)hydrazine, 1-trityl-2-phenylhydrazine, l-phenyl-2-(2,4,6-)-dichlorophenyl)hydrazine, 1-(2- (2,5-di-t
-pentylphenoxy)butyroyl)-2-((p or 0)-aminophenyl)hydrazine, l-(2-(2
,5-di-t-pentylphenoxy)butyroyl)-2
-((p or o)-aminophenyl)hydrazine pentadecylfluorocaprylate, 3-indazolinone, 1-(3,5-dichlorobenzoyl)-2-phenylhydrazine,! -)-Rhythyl-2-[(2-N-butyl-N-octylsulfamoyl)-4-methanesulfonyl)phenyl]hydrazine, 1-(4-(2,5-di-t-pentylphenoxy)butyroyl) −2−((p
or 0)-methoxyphenyl)hydrazine, 1-(methoxycarbonylbenzohydryl)-2-phenylhydrazine, t-pentylphenoxy)butyramido)phenyl]hydrazine, l-acetyl-2-[4-(2-(
2,4-di-t-pentylphenoxy)butyramide)
phenyl]hydrazine, 1-trityl-2-[(2,6
-dichloro-4-(N.

N-di-2-ethylhexyl)carbamoyl)phenyl]hydrazine, i-(methoxycarbonylbenzohydryl)-2-(2,4-dichlorophenyl)hydrazine,
and l-trityl-2-[(2-(N-ethyl-N-
Examples include octylsulfamoyl)-4-methanesulfonyl)phenyl]hydrazine.

In the image forming method of the present invention, the reducing agent is preferably used in an amount of 0.1 to 1500 mol % based on 1 mol of s (including the above-mentioned silver halide and an optional component organic silver salt). .

The polymerizable compound that can be used in the image forming method of the present invention is not particularly limited, and known polymerizable compounds can be used. Note that the image forming method of the present invention involves heat treatment, so it is difficult to volatilize when heated (e.g., the boiling point is 80°C).
It is preferable to use the compounds described above. In addition, when using a photosensitive material in which the photosensitive layer contains a color image forming substance as an optional component described later, the monopolymerizable compound is added to the molecule in order to immobilize the color image forming substance by polymerization and curing of the polymerizable compound. A crosslinkable compound having a plurality of polymerizable functional groups is preferable.

The polymerizable compound used in the image forming method is generally a compound having addition polymerizability or ring-opening polymerizability. Examples of the compound having addition polymerizability include compounds having an ethylenically unsaturated group, and compounds having ring-opening polymerizability include compounds having an epoxy group, and compounds having an ethylenically unsaturated group are particularly preferred.

Compounds having an ethylenically unsaturated group that can be used in the image forming method of the present invention include acrylic acid and its salts, acrylic esters, acrylamides, methacrylic acid and its salts, methacrylic esters, and methacrylamide. esters, maleic anhydride, maleic esters, itaconic esters, styrenes, vinyl ethers, vinyl esters, N-vinyl heterocycles, allyl ethers, allyl esters, and derivatives thereof.

Specific examples of polymerizable compounds that can be used in the present invention include acrylic esters.

Butyl acrylate, cyclohexyl acrylate, 2-ethylhexyl acrylate, benzyl acrylate, furfuryl acrylate, ethoxyethoxyethyl acrylate, dicyclohexyloxyethyl acrylate, nonylphenyloxyethyl acrylate, hexanediol diacrylate, butanediol diacrylate Acrylate, neopentyl glycol diacrylate, trimethylolpropane triacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, polyoxyethylenated bisphenol A diacrylate, hydroxypolyether polyacrylate, polyester Acrylates, polyurethane acrylates, and the like can be mentioned.

Other specific examples of methacrylic acid esters include methyl methacrylate, butyl methacrylate, ethylene glycol dimethacrylate, butanediol dimethacrylate, neopentyl glycol dimethacrylate, trimethylolpropane trimethacrylate,
Pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate, polyoxyalkylenated bisphenol A dimethacrylate, and the like can be mentioned.

The above polymerizable compounds may be used alone or in combination of two or more. Note that a substance in which a polymerizable functional group such as a vinyl group or a vinylidene group is introduced into the chemical structure of the above-mentioned reducing agent or a color image forming substance which is an arbitrary component described later can also be used as the polymerizable compound of the present invention. It goes without saying that the use of a reducing agent and a polymerizable compound, or a substance that functions as a color image forming substance and a polymerizable compound, is also included in the embodiments of the present invention, as described above.

In the image forming method of the present invention, the polymerizable compound is preferably used in an amount of 0.05 to 1200% by weight based on silver halide. A more preferable usage range is 5
950% by weight.

Polymerizable compounds that can be used in the image forming method are described in application specifications relating to a series of image forming methods described above and below.

The photosensitive material used in the image forming method of the present invention is one in which a photosensitive layer containing silver halide, a reducing agent, and a polymerizable compound is provided on a support. There are no particular restrictions on this support, but if heat development is planned in the image forming method of the present invention, it is preferable to use a material that can withstand the processing temperature of the heat development. Materials that can be used include glass, paper, high-quality paper, coated paper, cast coated paper, synthetic paper, metals and their analogues, films such as polynisdel, acetyl cellulose, cellulose ester, polyvinyl acetal, polystyrene, polycarbonate, and polyethylene terephthalate. , and paper laminated with a resin material or a polymer such as polyethylene.

In the image forming method of the present invention, a polymer image can be obtained on an image-receiving material by using a photosensitive material having the above structure, but a color image can be formed by including a color image-forming substance in the photosensitive layer as an optional component. There is no particular restriction on the zero-color image forming material that can be formed, and various kinds of materials can be used. In other words, substances that themselves are colored (dyes and pigments), and substances that are colorless or light colored themselves, but are affected by external energy (heating, pressure, light irradiation, etc.) or other components (11 coloring agents). Substances that develop color upon contact (color formers) are also included in color image forming substances.

In addition, when using a plurality of the above-mentioned color image-forming substances, they are combined with at least three types of silver halide emulsions (the silver halide emulsions will be described later) that are sensitive to different spectral regions, and the color image-forming substances corresponding to each emulsion are combined. By using it in this way, it is possible to easily form color images. For examples of color image-forming substances that can be used in the image-forming method, see Toku W! It is described in the specification of No. 195407/1983.

Dyes and pigments, which are substances that color themselves, can be found in various documents, such as "Dye Handbook," edited by the Organic Synthetic Chemistry Association, published in 1970, "Latest Pigment Handbook," edited by the Japan Pigment Technology Association, in addition to those listed above. , published in 1972) can be used. These dyes or pigments are used after being dissolved or dispersed.

On the other hand, examples of substances that develop color due to some kind of energy such as heating, pressure, or light irradiation include thermochromic compounds,
Piezochromic compounds, photochromic compounds, and leuco compounds such as triarylmethane dyes, quinone dyes, indigoid dyes, and azine dyes are known. All of these develop color upon heating, pressurization, light irradiation, or air oxidation.

The two types of substances that cause a color-forming reaction when brought into contact include various systems that generate color due to acid-base reactions, redox reactions, coupling reactions, chelate-forming reactions, etc. between two or more types of components. For example, pressure-sensitive copying paper (pp. 29-58) and azography (p. 87-95) described in Hiroyuki Moriga's ``Chemistry of barred and special paper'' (published in 1975).
Page), known coloring systems such as thermosensitive coloring by chemical change (pp. 118-120), or the preliminary draft of the seminar sponsored by the Kinki Chemical Industry Association - Latest Pigment Chemistry - Attractive Uses and New Developments as af@-sexual Pigments - 1 Collected pages 26-32, (1980
The coloring system described in June 19, 2008) can be used. Specifically, color formers with partial structures such as lactones, lactams, and spiropyrans, which are used in pressure-sensitive paper, and acidic substances such as acid clay and phenols. Color development system consisting of j (color developer); system using azo coupling reaction of aromatic diazonium salts, diazotates, diazosulfonates and naphthols, anilines, activated methylenes, etc.: hexamethylenetetramine and ferric iron ion and? ()-f) Chelate-forming reactions such as reactions with child acids and reactions between phenolphthalein-complexanes and alkaline earth metal ions; reactions between ferric stearate and pyrogallol and behen I'iJJM and 4 A redox reaction such as a -methoxy-1-naphthol reaction can be used.

The photosensitive material used in the image forming method of the present invention is characterized in that ff (a polymerizable compound is dispersed in the photosensitive layer in the form of oil droplets, and among the components contained in the photosensitive layer, at least the color image forming substance is an oil of the polymerizable compound). It is preferable that a polymerizable compound, which may contain other components in the photosensitive layer such as silver halide and a reducing agent, be present in the oil droplet in the oil droplet. For an example of a photosensitive material dispersed in the form of droplets and an image forming method using the same, see Japanese Patent Application No. 60-218603.
It is stated in the specification of the issue.

More preferably, the oil droplets of the polymerizable compound are in the form of microcapsules. Various known techniques can be applied to this microencapsulation method without any particular limitations. An example of an image forming method using a photosensitive material in the form of oil droplets or microcapsules of a polymerizable compound is described in JP-A-I-V (60-117089) as an example of a known art in which a wall shape is described. is U.S. Patent No. 28
00457 and 2800458 A method using coacervation of wood-loving wall forming materials: US Patent No. 3,287,154 and British Patent No. 99
No. 0443 specifications 1 and Japanese Patent Publication Nos. 38-19574, 42-446, and 42-771 Wall-shaped interfacial polymerization method; U.S. Patent No. 3418250 and U.S. Patent No. 3660304 A method using the isocyanate-polyol wall material described in U.S. Pat. No. 3,796,669: A method using the incyanate wall material described in U.S. Pat. No. 3,914,511: U.S. Pat. Nos. 4,001,140 and 408
Methods using urea-formaldehyde or urea-formaldehyde resircinol-based wall forming materials described in the specifications of US Pat. Method using the material; In 5 itu method by polymerization of 1,000 yen as described in Japanese Patent Publication No. 36-9168 and Japanese Patent Application Laid-Open No. 51-9079; Polymerization described in the specifications of British Patent No. 927807 and British Patent No. 965074 Distributed cooling method: US Patent No. 3,111,407 and British Patent No. 930
Methods for microcapsulating oil droplets of polymerizable compounds include, but are not limited to, methods such as the spray drying method described in each specification of No. 422, but after emulsifying the core material, microcapsules Particularly preferred is a method in which a polymer film is formed as the wall.

Other optional components that can be included in the photosensitive layer of the photosensitive material include sensitizing dyes, aIR salts, various image formation accelerators (e.g., bases or base precursors, oils, surfactants, antifoggants, (thermal solvent, etc.), thermal polymerization inhibitor, thermal polymerization initiator, development stopper, fluorescent whitening agent, antifading agent, antihalation or irradiation dye, matting agent, antismudge agent, plasticizer, water release agent , binders, etc.

For information on image forming methods and examples of sensitizing dyes that can be used in photosensitive materials, see Japanese Patent Application No. 139746/1986.
The patent application No. 60-14 contains an example of a silver salt in the specification of the No.
No. 1799, respectively. For image forming methods and photosensitive materials using bases or base precursors, see Japanese Patent Application No. 60-227528.

Regarding the image forming method and photosensitive material using a thermal polymerization initiator, Japanese Patent Application No. 60-223347 has descriptions and t, respectively. Furthermore, regarding image forming methods and photosensitive materials using antifoggants, Japanese Patent Application No. 60-2
No. 94337, No. 60-294338, No. 60-29
No. 4339 and the specification described in No. 60-294341,
Regarding image forming methods and photosensitive materials using polyethylene glycol derivatives as heat solvents, a patent application was filed in 1983.
0-294340, the specification of the application relating to the above-mentioned series of image forming methods, and Research Disclosure Magazine Vol. 1.170.19.
It is described in No. 17029, June 1978 (pages 9-15).

The sensitizing dye that can be used in the image forming method of the present invention is not particularly limited, and silver halide sensitizing dyes known in the photographic technology can be used. The above-mentioned sensitizing dyes include methine dyes, cyanine dyes, merocyanine dyes,
Complex cyanine dye.

Included are holopolar cyanine dyes, hemicyanine dyes, styryl dyes, hemioxonol dyes, and the like. These sensitizing dyes may be used alone or in combination. Especially when the purpose is supersensitization,
A common method is to use a combination of sensitizing dyes. In addition, along with the sensitizing dye, a dye that itself does not have a spectral sensitizing effect, or a substance that does not substantially absorb visible light but exhibits supersensitization may be used in combination.The amount of the sensitizing dye added is as follows: Generally, the amount is about 1O-8 to 1O-2 mol per mol of silver halide.

In the image forming method of the present invention, the addition of I1a silver salt is particularly effective when heat development is planned as the development. That is, when heated to a temperature of 80° C. or higher, the organic silver salt is considered to participate in an oxidation-reduction reaction using the Wi image of silver halide as a catalyst. In this case, the silver halide and the organic silver salt are in a contact state of 7! Or preferably, they should be in close proximity. The organic compounds constituting the organic silver salt include aliphatic or aromatic carboxylic acids,
Examples include thiocarbonyl group-containing compounds having a mercapto group or α-hydrogen, and imino group-containing compounds. Among them, benzotriazole is particularly preferred, and the above-mentioned aluminum salts are generally halogenated JI
0.01 to 10 mol, preferably 0.01 to 10 mol per mol of M. O
1 to 1 mole is used. In addition, instead of the organic silver salt, an organic compound (for example, benzotriazole) constituting it may be used.
A similar effect can be obtained by adding to the photosensitive layer.

Various image formation accelerators can be used in the image forming method of the present invention. Silver halide (
and/or promotion of the redox reaction between an organic 51JJmu) and a reducing agent, promotion of the transfer of an image-forming substance from a photosensitive material to an image-receiving material or an image-receiving layer (these will be described later), etc. There is a function. The image formation accelerator is
From the viewpoint of physicochemical properties, they are further classified into bases or base precursors, oils, surfactants, antifoggants, thermal solvents, etc. However, these substance groups generally have multiple functions and usually have some of the above-mentioned promoting effects. Therefore, the above classification is for convenience, and in reality, -* compounds often have multiple Ja abilities.

Examples of bases, base precursors, oils, surfactants, antifoggants and hot solvents are shown below as image formation accelerators.

Examples of preferred bases include alkali metal or alkaline earth metal hydroxides as inorganic bases, combinations of zinc hydroxide or zinc oxide with chelating agents such as sodium picolinate, secondary or tertiary phosphoric acid 11 ! , borate, carbonate, metaboric acid" 8: ammonium hydroxide;
Hydroxides of quaternary alkylammonium; hydroxides of other metals, etc.; organic 1u groups include aliphatic amines (trialkylamines, hydroxylamines, aliphatic polyamines); aromatic amines; (N-alkyl-substituted aromatic amines, N-hydroxylalkyl-substituted aromatic amines and bis[p-(dialkylamino)
phenylcomethanes), heterocyclic amines, amidines, cyclic amidines, guanidines, cyclic guanidines,
Examples include quinolinic acid salts, and those having a pKa of 7 or more are particularly preferred.

Examples of base precursors include salts of organic acids and bases that decarboxylate when heated, compounds that release amines through reactions such as intramolecular nucleophilic substitution, Rossen rearrangement, and Beckmann rearrangement. Compounds that emit bases and compounds that generate bases by electrolysis or the like are preferably used. Specific examples of base precursors include guanidine trichloroacetic acid, veridine trichloroacetic acid, morpholine trichloroacetic acid, p-toluidine trichloroacetic acid, 2-picoline trichloroacetic acid, guanidine phenylsulfonylacetate, 4-chlorophenylsulfonylacetate guanidine, and 4-chlorophenylsulfonylacetate. Examples include guanidine methyl-sulfonylphenylsulfonylacetate and guanidine 4-acetylaminomethylpropiolate.

In the imaging method of the present invention, the base or base precursor can be used in a wide range of amounts. fj! The group or base precursor is suitably used in an amount of 50% by weight or less in terms of weight of the coating film of the photosensitive layer, and more preferably in a range of 0.01% to 40% by weight. In the present invention, the base and/or base precursor may be used alone or as a mixture of two or more.

As the oil, a high boiling point organic solvent used as a solvent for emulsifying and dispersing hydrophobic compounds can be used.

Examples of the surfactant include pyridinium salts, ammonium salts, and phosphonium salts described in JP-A-59-74547, and polyalkylene oxides described in JP-A-59-57231.

Anti-fog +E agents include compounds having a 5- or 6-membered nitrogen-containing heterocyclic structure (including compounds having a cyclic amide structure), thiourea derivatives, thioether compounds, and thiol derivatives, which are known in conventional photographic technology. etc. can be mentioned.

As a thermal solvent, it acts as a solvent for the reducing agent and f! compound,
Compounds that are high dielectric constant materials and are known to promote physical development of silver salts are useful. Useful heat solvents include polyethylene glycols described in U.S. Pat. No. 3,347,675, derivatives of polyethylene oxide such as oleic acid ester, beeswax, monostearin, -
Compounds with high dielectric constant having SO,- and/or 100- groups, described in US Pat.
1゜O-decanediol described on pages 26-28 of the February issue,
Methyl anisate, biphenyl perate, etc. are preferably used.

The thermal polymerization initiator that can be used in the image forming method of the present invention is generally a compound that thermally decomposes under heating to generate polymerization initiating species (particularly radicals), and is usually used as an initiator for radical polymerization. It is. Regarding thermal polymerization initiators, please refer to pages 6 to 1 of ``Addition Polymerization/Ring Opening Polymerization J19B3, Heme Publishing, edited by the Editorial Committee of Molecular Experiments, Articles of the Society of Polymer Science and Technology.
It is described on page 8 etc. Specific examples of thermal polymerization initiators include azobisisobutyronitrile, 1,1'-azobis(l-cyclohexanecarbonitrile), dimethyl-2
, 2°-azobisisobutyrate, 2.2-azobis(
2-methylbutyronitrile), azo compounds such as azobisdimethylvaleronitrile, benzoyl peroxide, di-t-
Organic peroxides such as peroxide, dicumyl peroxide, t-butyl hydroperoxide, cumene hydroperoxide, inorganic peroxides such as hydrogen peroxide, potassium persulfate, ammonium persulfate, and p-toluenesulfinic acid. Examples include sodium. The thermal polymerization initiator is preferably used in an amount of 1 to 120% by weight, more preferably 1 to 10% by weight, based on the polymerizable compound.

The development stopper that can be used in the image forming method of the present invention is a compound or silver or silver salt that neutralizes the base or reacts with the base to reduce the base concentration in the film and stop the development immediately after proper development. It is a compound that interacts with and suppresses development. Specifically, an acid precursor that releases an acid upon heating, a base that coexists upon heating, and fa! ! ! Examples include electrophilic compounds that cause reactions, nitrogen-containing heterocyclic compounds, and mercapto compounds. For acid precursors, for example, Japanese Patent Application No. 58-216928 and No. 59-48305
Description Wall-shaped oxime esters, patent application 1983-8
Examples of electrophilic compounds that cause a W1 conversion reaction with a base when heated include compounds that release an acid through the Rouxene rearrangement described in Japanese Patent Application No. 59-8583.
The anti-streak agent used in the image forming method described in No. 6 is preferably a particulate material that is solid at room temperature. Specific examples include starch particles described in British Patent No. 12322347, polymer fine powder described in U.S. Patent No. 3625736, and microcapsule particles containing no coloring agent described in British Patent No. 1235991. , U.S. Patent No. 2
Cellulose fine powder and talc described in No. 711375.

Examples include inorganic particles such as kaolin, bentonite, waxite, zinc oxide, titanium oxide, and alumina.

The average particle size of the above particles is 3 in volume average diameter.
A range of 5 to 50 pm is preferred, and a range of 5 to 40 ILm is more preferred.

As mentioned above, when the oil droplets of the polymerizable compound are in the form of microcapsules, it is more effective if the particles are larger than the microcapsules.

The binders that can be used in the photosensitive material used in the image forming method of the present invention can be contained in the photosensitive layer alone or in combination. It is preferable to use a binder that is mainly wood-loving. Transparent or translucent wood-loving binders are typical, and include proteins such as gelatin, gelatin derivatives, cellulose derivatives, natural substances such as starch, polysaccharides such as gum arabic, and polyvinyl alcohol. .

Includes synthetic polymeric materials such as polyvinylpyrrolidone, water-soluble polyvinyl compounds such as acrylamide polymers. Other synthetic polymeric substances include dispersed vinyl compounds in the form of latexes, which increase the dimensional stability of photographic materials, among others.

Layers that can be optionally provided on the photosensitive material include a heating layer, a protective layer, an antistatic layer, an anti-curl layer, a peeling layer,
Examples include a matting agent layer.

The image forming method using the heat generating layer is described in Japanese Patent Application No. 135568/1983. Further, examples of other auxiliary layers and their usage are also described in the above-mentioned series of image forming methods and application specifications relating to photosensitive materials.

The photosensitive material used in the image forming method of the present invention can be manufactured as described below.

Various methods can be used to produce photosensitive materials, but a common method is to use a coating solution in which the components of the photosensitive layer are dissolved, emulsified, or dispersed in an appropriate solvent.
The process consists of the steps of preparing a photosensitive material by applying a coating solution to a support (41) and drying it.

Generally, 3 g of the above-mentioned coating liquid is prepared by preparing a liquid composition containing each component and then mixing the respective liquid compositions. The above liquid composition may be prepared individually for each component or may be prepared to contain a plurality of components. It can also be used by adding it after the step or preparation step I. Furthermore, as described below,
A method of preparing a secondary composition by further emulsifying an oily (or aqueous) composition containing one or more components in an aqueous (or oily) solvent can also be used.

Hereinafter, methods for preparing liquid compositions and coating liquids for the main components contained in the photosensitive layer will be shown.

In the production of light-sensitive materials, silver halide is preferably prepared as a silver halide emulsion. There are various manufacturing methods known in photographic technology, etc., but there are no particular restrictions on the manufacturing of light-sensitive materials.Silver halide emulsions can be prepared using any of the acid method, neutral method, or ammonia method. can also be prepared. The reaction method between the soluble silver salt and the soluble halogen salt may be a one-sided mixing method, a simultaneous mixing method, or a combination thereof. It is also possible to employ a back mixing method in which particles are mixed under conditions in which there is an excess of silver ions, and a Chondral double jet method in which PAg is kept constant. Further, the silver halide emulsion may be of a surface latent image type in which a latent image is mainly formed on the surface of the grains, or may be of an internal latent image type in which a latent image is formed inside the grains. Direct reversal emulsions combining internal latent image type emulsions and nucleating agents can also be used.

SI of silver halide emulsions used in the production of photosensitive materials
In J-manufactured products, wood-philic colloid (
For example, gelatin) is preferred. By preparing a silver halide emulsion using a wood-philic colloid, the sensitivity of a light-sensitive material produced using this emulsion is improved.

Silver halide emulsions are prepared by using ammonia, organic thioether derivatives (see Japanese Patent Publication No. 47-386), and sulfur-containing compounds (see Japanese Patent Application Laid-Open No. 144319-1987) as silver halide solvents in the stage of forming silver halide grains.
etc. can be used. In addition, in the process of particle formation or physical ripening, cadmium salts, zinc salts, lead salts, thallium salts, etc. may coexist.Furthermore, for the purpose of improving high illuminance failure and low illuminance failure, iridium chloride (■ or ), water-soluble iris such as ammonium hexachloroiridium salt.

Dium salts or water-soluble rhodium salts such as rhodium chloride can be used.

The soluble salts may be removed from the silver halide emulsion after precipitation or physical ripening. In this case, it can be carried out according to the Tardel water washing method or the sedimentation method. The silver halide emulsion may be used without post-ripening, or it is usually used after being chemically sensitized.

For emulsions for ordinary type sensitive materials, known sulfur sensitization method, reduction sensitization method, noble metal sensitization method, etc.
The sensitizing method using the sensitizing dye described in No. 6 can be used alone or in combination. These chemical sensitizations can also be carried out in the presence of a nitrogen-containing heterocyclic compound (see JP-A-58-126526 and JP-A-58-215644).

In addition, when the above-mentioned silver salt described in Japanese Patent Application No. 141799/1982 is included in the photosensitive layer, the a! 11! Emulsions can be prepared.

In the production of photosensitive materials, polymerizable compounds can be used as a medium in preparing the composition of other components in the photosensitive layer.For example, silver halide (including silver halide emulsions), reducing agents, etc. Alternatively, an arbitrary component such as a color image forming substance can be dissolved, emulsified or dispersed in a polymerizable compound and used in the production of a photosensitive material. In particular, when a color image-forming substance is included in the photosensitive layer, it is preferable that the color image-forming substance is included in the polymerizable compound. Furthermore, as will be described later, when the oil droplets of the polymerizable compound are microencapsulated, components such as a wall material necessary for microencapsulation may be included in the polymerizable compound.

A photosensitive composition containing silver halide in a polymerizable compound can be prepared using a silver halide emulsion. In addition to the silver halide emulsion, silver halide powder prepared by freeze-drying or the like can also be used to prepare the photosensitive composition.

Photosensitive compositions containing these silver halides can be obtained by stirring with a homogenizer, blender, mixer, or other commonly used stirrers.

In addition, of the photosensitive composition: J! It is preferable that a copolymer consisting of a woody repeating unit and a hydrophobic repeating unit be dissolved in the polymerizable compound used for J-manufacturing.
A photosensitive composition containing the above copolymer is described in Japanese Patent Application No. 60-261887.

Alternatively, instead of using the above copolymer, a photosensitive composition may be prepared by dispersing microcapsules having a silver halide emulsion as a core material in a polymerizable compound. A photosensitive composition containing microcapsules is described in Japanese Patent Application No. 5750/1983.

Polymerizable compounds (like the photosensitive compositions above, other compositions)
& components) is preferably used as an emulsion in an aqueous solvent.
When microcapsulating oil droplets of a polymerizable compound, a wall material necessary for microencapsulation may be added to the emulsion, and a process to form an outer shell may also be performed at the stage of the emulsion. can. Further, a reducing agent or other optional components may be added at the stage of the emulsion.

Among the emulsions of the polymerizable compounds mentioned above, when the polymerizable compound is a photosensitive composition containing silver halide, it can be used as it is as a coating solution for photosensitive materials. Emulsions other than those mentioned above can be mixed with a composition of other components such as a silver halide emulsion and optionally a silver salt emulsion to prepare a coating solution. It is also possible to add other components at the stage of this coating solution in the same manner as in the case of the emulsion described above.

The photosensitive material used in the image forming method of the present invention can be manufactured by applying the coating solution prepared as described above onto the support described above and drying it.

The coating liquid can be easily applied to the support according to known techniques.

The present invention will be explained in more detail with reference to the following examples, but the present invention is not limited thereto.

Margin below [Example 1] Preparation of image-receiving material (A) Add 11 g of 40% sodium hexametaphosphate aqueous solution to 125 g of water, further add 34 g of zinc 3.5-di-α-methylbenzylsalicylate, and 82 g of 55% calcium carbonate slurry. were mixed and coarsely dispersed using a mixer. The liquid was dispersed using a Dynamyl disperser, and 6 g of 50% SBR latex and 55 g of 8% polyvinyl alcohol (a) were added to 200 g of the obtained liquid and mixed uniformly. This mixed solution was uniformly applied onto art paper weighing 43 g/m'' to give a wet film thickness of 30 gm.

In addition, 25% polystyrene (thermoplastic compound Tha)
To 120 g of latex was added 200 mJ of 5% sodium dodecylbenzenesulfonate aqueous solution, 100 mM of 15% polyvinyl alcohol, and the mixed solution was overcoated using a #30 coating lot, dried at room temperature, and imaged according to the present invention. Material (A) was prepared.

[Example 2] Preparation of image receiving materials (B) to (D) In place of 120 g of 25% polystyrene latex used in preparing the image receiving material of Example 1, the following heat ii (
In the same manner as in Example 1, except that latexes (b) to (d) of Qi-based compounds were used in the following amounts, respectively.
Image receiving materials (B), (C) and (D) according to the invention were prepared.

(b) 20% polyvinyl acetate latex 50g (C) 20% polybutyl methacrylate latex 150g (d) 18% polymethyl methacrylate-co-methacrylic acid latex 160g
Agent: iJm Dissolve 40 g of gelatin and 23.8 g of potassium bromide in 3 tablespoons of water, heat to 50°C, and add nitric acid #1 while stirring.
A solution of 32.3 g in 200 mfL of water was added over 10 minutes. Then add 1.66g of potassium iodide to 10ml of water.
A solution of 0 ml was added over 2 minutes. The pH of the silver iodobromide emulsion thus obtained was adjusted to A, and after sedimentation and removal of excess salt, the pH was adjusted to 6.0 for 31 tons, yield 4.
00 g of silver iodobromide emulsion was obtained.

Preparation of photosensitive composition 100 g of pentaerythritol tetraacrylate, 0.40 g of the following copolymer, Vargas Script Red 1-6-B (manufactured by Ciba Geigy)6. OOg was dissolved. To 18゜00g of the above solution, add 0% of the following hydrazine derivative.
-26g, 1.22g of the following developer, 0.20g of a 1% ethyl acetate solution of the following antifoggant, and 0.36g of Emmalex NP-8 (manufactured by Nippon Emulsion ■), and further 1.20g of methylene chloride. was added to make a homogeneous solution.

4.06 g of silver nitride emulsion was added and stirred at 18,000 rpm for 3 minutes using a homogenizer to form a photosensitive composition. I got it.

(Copolymer) C02C11tC11,N(CI!3)2GO2CI+
3-(-CII2-C+-20 C02C4+19 (Hydrazine derivative) (Developer) 18.6% aqueous solution of isopane (manufactured by Kuraray ■) 10.51
g, 56 g of a 2.89% aqueous solution of pectin 4B, and adjusted to pH 4.0 using 10% sulfuric acid: A! The photosensitive composition was added to the aqueous solution and stirred for 2 minutes at 7000 rpm using a homogenizer to emulsify the photosensitive composition in the aqueous solvent.

To 72.5 g of this aqueous emulsion, 8.32 g of urea 40% aqueous solution was added.
g, resorcinol 11.3% aqueous solution 2°82g, formalin 37% aqueous solution 8.56g, ammonium sulfate 8.00
% aqueous solution was added one by one, and! ! 260 while stirring
Heating was continued for 2 hours at °C. Thereafter, the pti was adjusted to 7.3 using a 10% aqueous sodium hydroxide solution, and 3.62 g of a 30.9% aqueous sodium bisulfite solution was added to prepare a microcapsule liquid.

Ball IL fee! 10.0g of microcapsule liquid prepared as above
, Emmalex NP-8 (manufactured by Nippon Emulsion ■) 1
0% aqueous solution 1.0g, 1.4-diazabicyclo[2,2
,2] Add 1.86 g of 10% octane aqueous solution,
A #30 coating lot was applied onto a 71 m thick polyethylene terephthalate plate and dried by blowing air at room temperature to prepare a photosensitive material.

Image shape and evaluation The photosensitive material obtained as described above was imagewise exposed at 2000 lux for 1 second each through a continuous filter with an e degree of 0 to 2.0 using a tungsten bulb, and then heated to 125°C. The light-sensitive material was heated for 20 seconds on a heated hot plate and then layered with each of the image-receiving materials obtained in Examples 1 and 2 at a density of 300 kg/cm''.
passed through a pressure roller. Further, the image-receiving material was heated for 10 seconds on a hot plate heated to 140° C., and the density of the magenta positive color image obtained on the image-receiving material was measured using a reflection densitometer.

The above measurement results are shown in Table 1 below.

First surface Image reception Thermoplastic compound Transfer density material Latex Maximum density Minimum density (A)
(a) 1.32 0.11(B) (
b) 1.26 0.07(C) (C)
1.45 0.10(D) (d)
1.46 0.12 As is clear from the results shown in Table 1, all images obtained on the image receiving material according to the present invention are clear images with a high maximum density and a low minimum density. Recognize. Furthermore, all images obtained on the image-receiving materials had gloss.

Claims (1)

[Scope of Claims] 1. A photosensitive material having a photosensitive layer containing silver halide, a reducing agent, and a polymerizable compound on a support is imagewise exposed to form a latent image of silver halide, and the image Simultaneously with the imagewise exposure or after the imagewise exposure, a development process is performed to polymerize the polymerizable compound in the area where the latent image is formed, and fine particles of the thermoplastic compound are applied to the developed photosensitive material on the support. An image forming method comprising the steps of transferring an unpolymerized polymerizable compound to the image receiving material by pressing image receiving materials having layers made of aggregates in a stacked state, and then heating the image receiving material. 2. The method according to claim 1, wherein the heating temperature of the image receiving material is 60°C to 200°C. 3. The method according to claim 1, wherein the developing treatment is performed by heating. 4. The heating temperature in the development process by heating is 80°C.
4. The method according to claim 3, characterized in that the temperature is from 0.degree. C. to 200.degree. 5. The method according to claim 1, wherein the thermoplastic compound is a thermoplastic resin. 6. The image receiving material contains a thermoplastic compound of 0.1 to 20
2. The method according to claim 1, characterized in that it has a particle size in the range of g/m^2. 7. A photosensitive material having a photosensitive layer containing silver halide, a reducing agent, and a polymerizable compound on a support is imagewise exposed to form a latent image of silver halide, and simultaneously with the imagewise exposure, or After imagewise exposure, heat development treatment is performed to polymerize the polymerizable compound in the area where the latent image is not formed,
An image-receiving material having a layer made of aggregates of fine particles of a thermoplastic compound on a support is superimposed on a photosensitive material that has been subjected to a heat development process, and pressure is applied to transfer the unpolymerized polymerizable compound to the image-receiving material. An image forming method characterized by transferring and heating an image receiving material. 8. The method according to claim 7, wherein the heating temperature of the image receiving material is 60°C to 200°C. 9. The heating temperature in the above heat development treatment is 80°C to 2°C.
The method according to claim 7, characterized in that the temperature is 00°C. 10. The method according to claim 7, wherein the thermoplastic compound is a thermoplastic resin. 11. The image receiving material contains a thermoplastic compound of 0.1 to 20
2. The method according to claim 1, characterized in that it has a particle size in the range of g/m^2.