JPH0623851B2 - Image forming method - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to an image forming method using a photosensitive material having a photosensitive layer containing a silver halide, a reducing agent and a polymerizable compound on a support.

BACKGROUND OF THE INVENTION An image forming method using a light-sensitive material having a light-sensitive layer containing a silver halide, a reducing agent and a polymerizable compound on a support is described in JP-B-45-11149 and 47-20741.
No. 49-10697, JP-A-57-138632.
No. 58-169143.
In these methods, when the exposed silver halide is developed using a developing solution, the reducing agent is oxidized and at the same time, the coexisting polymerizable compound (eg, vinyl compound) initiates the polymerization, resulting in high image quality. It forms a molecular compound. Therefore, the above method requires a developing treatment using a liquid, and the treatment requires a relatively long time.

As an improvement of the above method, JP-A-61-69062 discloses a method capable of forming a polymer compound by a dry treatment. In this method, a recording material (photosensitive material) comprising a support and a photosensitive layer comprising a photosensitive silver salt (silver halide), a reducing agent, a crosslinkable compound (polymerizable compound) and a binder is used as an image. A latent image is formed by exposure, and then a polymer compound is formed by heating on the portion where the latent image of the photosensitive silver salt is formed.

The above image forming method is a method of polymerizing the polymerizable compound in the portion where the latent image of silver halide is formed. The present inventors have invented a method capable of polymerizing a polymerizable compound in a portion where a latent image of silver halide is not formed, and this invention has been applied for a patent (Japanese Patent Application No. 60-2106).
57). In this method, heating causes a reducing agent to act on a portion where a latent image of silver halide is formed to suppress the polymerization of a polymerizable compound, and at the same time, promotes the polymerization of other portions.

As one aspect of the image forming method as described above, a photosensitive material containing a silver halide, a reducing agent, a polymerizable compound, and a dye or a pigment is provided on a support at the same time as the imagewise exposure or after the imagewise exposure. , A developing treatment was carried out to polymerize and cure the polymerizable compound in the portion where the latent image was formed, thereby immobilizing the dye or pigment in the cured portion, and the image receiving material was superposed on the photosensitive material subjected to the developing treatment. A patent application has been filed for an image forming method in which the dye or pigment in the uncured portion is transferred to the image receiving material by applying pressure in the state (Japanese Patent Application No. 61-29
987). The above method has an advantage that all ordinary sheet materials can be used as an image receiving material, but when a material having a smooth surface is used to give gloss to an obtained image, transfer of a dye or a pigment to the image receiving material is performed. However, there was a tendency that high transfer density could not be obtained.

SUMMARY OF THE INVENTION An object of the present invention is to provide an image forming method capable of obtaining an image having high transfer density and gloss.

Another object of the present invention is to provide an image forming method in which the obtained image has good storability.

Further, one of the objects of the present invention is to provide an image forming method capable of obtaining a transparent image.

In the present invention, a light-sensitive material having a light-sensitive layer containing a silver halide, a reducing agent, a polymerizable compound and a dye or a pigment on a support is imagewise exposed to form a latent image of silver halide. 80 to 20 at the same time as the exposure or after the imagewise exposure
A heat development treatment is carried out by heating at 0 ° C. for 1 second to 5 minutes to polymerize and cure the polymerizable compound in the portion where the latent image is formed,
This immobilizes the dye or pigment in the cured part, and heat-develops the light-sensitive material with an image-receiving material having a layer made of a fine-grained thermoplastic compound on a support, pressurizing it, and uncuring The present invention provides an image forming method, which comprises transferring a part of dye or pigment to an image receiving material and heating the image receiving material at 50 to 200 ° C. for 1 second to 5 minutes.

Further, the present invention provides a support, a silver halide, a reducing agent,
A light-sensitive material having a light-sensitive layer containing a polymerizable compound and a dye or a pigment is imagewise exposed to form a latent image of silver halide, and the latent image of 80 to 20 is formed simultaneously with or after the imagewise exposure.
A heat development treatment is carried out by heating at 0 ° C. for 1 second to 5 minutes to polymerize and cure the polymerizable compound in the portion where the latent image is not formed, thereby immobilizing the dye or pigment in the cured portion, and the heat development treatment is performed. An image-receiving material having a layer made of a fine-particle thermoplastic compound on a support is superposed on the photosensitive material and pressure is applied to transfer the uncured portion of the dye or pigment to the image-receiving material. There is also provided an image forming method characterized by heating at 1 to 5 minutes for 1 to 5 minutes.

EFFECT OF THE INVENTION The image forming method of the present invention uses an image receiving material having an image receiving layer made of a fine particle thermoplastic compound on a support, forms an image made of a dye or a pigment on the image receiving material, and then forms the image receiving material. Is heated.

According to the image forming method of the present invention, a dye or a pigment is transferred onto an image receiving layer made of a particulate thermoplastic compound having an appropriate roughness, so that a clear image having a high transfer density can be obtained. Then, by heating the image receiving material, the thermoplastic compound forms a transparent and smooth film containing a dye or a pigment on the surface of the support. Therefore, the image forming method of the present invention can obtain a glossy and clear transferred image.

When an image is formed according to the image forming method of the present invention,
The dye or pigment is encapsulated in the formed film. As described above, since the dye or pigment is almost completely protected by the film, there is almost no risk of deterioration due to the action of oxygen or water in the air. Further, in the image forming method of the present invention, since the image receiving material on which the image is formed is heated,
The unpolymerized polymerizable compound transferred together with the dye or pigment is cured. Therefore, the unpolymerized polymerizable compound does not gradually diffuse together with the dye or pigment, and the image is not blurred and the sharpness is not lowered. As a result, the image obtained by the image forming method of the present invention has excellent storability. Further, since the image obtained according to the image forming method of the present invention has good fixability, there is almost no risk of the colored components falling off or adhering to the hand.

Further, when the support of the image receiving material is made of a material having light transmittance, a transparent image can be obtained. That is, since the image obtained by the image forming method of the present invention has high light transmittance, an excellent transparent image can be easily obtained by making the support of the image receiving material transparent.

Detailed Description of the Invention The image receiving material used in the image forming method of the present invention has an image receiving layer made of a fine particle thermoplastic compound on a support.

The thermoplastic compound is not particularly limited, and can be used by arbitrarily selecting from known thermoplastic resins (plastics) and waxes. However, the melting point of the thermoplastic compound is preferably 30 ° C to 200 ° C, more preferably 50 ° C to 150 ° C.

Representative specific examples of the thermoplastic resin that can be preferably used in the image receiving material are polyethylene (preferably amorphous), polypropylene (preferably amorphous), styrene-butadiene copolymer, styrene-methylmethacrylate copolymer, and poly. Vinyl acetate, vinyl acetate-
Vinyl chloride copolymer, vinylidene chloride-vinyl chloride copolymer, vinylidene chloride-acrylonitrile copolymer, polyvinyl butyral, polyvinyl formal, vinyl acetate-ethylene copolymer, polystyrene, styrene-acrylonitrile copolymer, polyvinyl chloride, polyvinylidene chloride, methyl Methacrylate, methyl methacrylate-methacrylate copolymer, ethyl acrylate-acrylic acid copolymer, polyethyl acrylate, polybutyl acrylate, polybutyl methacrylate, styrene-acrylate copolymer, polymethyl acrylate, 2-ethylhexyl acrylate-methacrylate copolymer, etc. be able to.

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

The image receiving layer is formed as a layer made of the above-mentioned fine particle thermoplastic compound. The average particle diameter of the thermoplastic compound fine particles is preferably 0.05 μm to 100 μm, and more preferably 0.1 μm to 50 μm.

The image receiving material preferably contains the thermoplastic compound in the range of 0.1 to 20 g / m ² , and more preferably 0.5 to 10 g / m ² .

The layer thickness of the image receiving layer made of a fine particle thermoplastic compound is 0.
It is preferably 5 to 100 μm, and 1 to 50 μm
More preferably m.

The image receiving layer is preferably formed as an aggregate of the fine particles.

The image-receiving layer of the image-receiving material used in the image forming method of the present invention can be composed of only the above-mentioned fine particle thermoplastic compound (for example, when the fine particles of the thermoplastic compound have a cohesive property). However, it is generally preferable that the image receiving layer is configured to include a binder. The binder which 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 transparent or semi-transparent hydrophilic compound as the binder. Examples of hydrophilic binders that can be preferably used in the image receiving layer include gelatin, gelatin derivatives, and cellulose derivatives (carboxymethyl cellulose, methyl cellulose, etc.).
Examples include natural substances such as starch and arabic gum; water-soluble polyvinyl compounds such as polyvinyl alcohol, polyvinylpyrrolidone, and acrylamide polymers. A polymer having low oxygen permeability may be used as a binder, such as the image receiving material described in Japanese Patent Application No. 61-53879.

The binder in the image receiving layer of the image receiving material is preferably used in the range of 0.001 g to 1 g, and more preferably 0.01 to 0.1 g, per 1 g of the thermoplastic compound.

The image receiving layer of the image receiving material may be configured to contain any other component other than the binder. Examples of other optional components include mordants, dyes or pigments contained in the image-receiving layer for purposes other than image formation, thermal polymerization initiators, photopolymerization initiators, and the like.

The mordant that can be used in the image-receiving layer can be selected from compounds known in the photographic art and the like according to the above-described color-developing system and used. If necessary, a plurality of mordants having different mordant powers may be used.

A part of the dye or pigment can be added at the time of forming the image receiving layer for the purpose of writing characters, symbols, frames, etc. on the image receiving layer or for the purpose of making the background of the image a specific color. Further, a dye or a pigment may be included in the image receiving layer for the purpose of facilitating the front / back discrimination of the image receiving material. As the dye or pigment, various known substances including dyes or pigments used in image formation can be used, and when the dye or pigment may impair the image formed in the image receiving layer, Reduces the dyeing density of the dye or pigment (for example, the reflection density of 1
It is preferable to use the following) or a dye or pigment having a property of being decolorized by heating or irradiation with light. The image receiving material having an image receiving layer containing a dye or pigment having a property of decolorizing by heating or light irradiation is described in the specification of "Image receiving material and image forming method" filed on May 14, 1986 by the present applicant. There is.

Furthermore, when a white pigment such as titanium dioxide or barium sulfate is added to the image receiving layer, the image receiving layer can function as a white reflective layer. When the image receiving layer is caused to function as a white reflection amount, the white pigment is 1 per 1 g of the thermoplastic compound.
It is preferably used in the range of 0 g to 100 g.

When the dye or pigment as described above is contained in the image receiving layer, it may be uniformly contained or may be partially distributed. For example, a support described below is made of a material having a light-transmitting property, and a part of the reflection image can be a projection image by including the white pigment in a part of the image receiving layer. By doing so, unnecessary image information in the projected image can be written as a reflected image in the image receiving layer portion containing the white pigment.

The heating of the image receiving material in the image forming method of the present invention has a significance as a curing treatment (fixing treatment) of the unpolymerized polymerizable compound as described above. A thermal polymerization initiator may be added to the image-receiving layer for the purpose of smooth curing of the polymerizable compound. An image receiving material having an image receiving layer containing a thermal polymerization initiator is disclosed in Japanese Patent Application No. 61-55502.
It is described in the specification. Further, a photopolymerization initiator may be contained in the image receiving layer for the same purpose. Image-receiving materials having an image-receiving layer containing a photopolymerization initiator are described in Japanese Patent Application No. 61-3025.

The image receiving material used in the image forming method of the present invention comprises the above-mentioned image receiving layer provided on a support. A protective layer may be further provided on the image receiving layer. As a material that can be used for the support of the image receiving material, glass,
Paper, high-quality paper, coated paper, cast coated paper, baryta paper, synthetic paper, metal and its analogs, polyester, acetyl cellulose, cellulose ester, polyvinyl acetal, polystyrene, polycarbonate, polyethylene terephthalate, and other films, and resin materials and polyethylene. Examples include paper laminated with a polymer such as. When a porous material such as paper is used as the support of the image receiving material, Japanese Patent Application No.
It is preferable that the image receiving material described in the specification of No. 52990 has a certain smoothness.

Further, in order to obtain a transparent image, the support of the image receiving material needs to be made of a material having light transmittance. As described above, the image forming method of the present invention can obtain an excellent transparent image. If you want to get a transparent image,
The light transmittance of the support of the image receiving material is preferably 30% or more, and more preferably 50% or more.
An image receiving material using a transparent support is described in Japanese Patent Application No. 61-52991.

The image receiving material can be produced by various methods, but generally, the components of the image receiving layer containing a thermoplastic compound are dissolved, emulsified or dispersed by optionally using a solvent to prepare a coating liquid. Then, the coating solution can be easily obtained by applying it to the support as described above. For example, by preparing a coating solution in which fine particles of a thermoplastic compound are dispersed in a solvent, an image receiving layer made of a fine particle thermoplastic compound can be easily formed. Further, even when the coating solution is prepared as a latex in which a liquid thermoplastic compound is dispersed in a solvent, an image receiving layer made of a fine particle thermoplastic compound can be formed in the same manner.

When the image-receiving layer contains a binder, it is preferable to prepare a solution in which the binder is dissolved in an appropriate solvent and prepare the coating solution in the order of adding the thermoplastic compound to the binder solution.

The image forming method of the present invention using the image receiving material as described above will be described below.

FIG. 1 is a schematic sectional view showing an embodiment of the image receiving material used in the image forming method of the present invention (an embodiment in which the image receiving layer further contains a binder). As shown in FIG. 1, the image-receiving material has an image-receiving layer 1 provided on a support 2. The image receiving layer 1 is formed by agglomeration of the thermoplastic compound 3 in the form of fine particles, and the binder 4 is interposed between the fine particles.

FIG. 2 is a schematic sectional view showing an embodiment (an embodiment using microcapsules) of a photosensitive material used in the image forming method of the present invention. As shown in FIG. 2, the photosensitive material has a photosensitive layer 5 provided on a support 2. The photosensitive layer 5 comprises microcapsules 8 and 9 containing a silver halide, a reducing agent, a polymerizable compound, and a dye or a pigment. Microcapsules 9 are microcapsules in which a polymerizable compound is polymerized and cured by imagewise exposure and development treatment, and microcapsules 8 are microcapsules in which the polymerizable compound is in an uncured state.

FIG. 3 is a schematic sectional view showing transfer of a dye or a pigment to an image receiving material. Image receiving layer 1 of the image receiving material shown in FIG.
And the photosensitive layer 2 of the photosensitive material shown in FIG. In this way, the microcapsules (8 in FIG. 2) in which the polymerizable compound is in an uncured state are ruptured (10), and the dye or pigment is imagewise transferred into the image receiving layer 1 (11).

FIG. 4 is a schematic sectional view showing a state in which the image receiving layer is further heated after the image formation. As shown in FIG. 4, the image-receiving layer 1 becomes a uniform, transparent and glossy film including the portion 12 to which the dye or pigment has been transferred by melting and adhering the particulate thermoplastic compound.

As described above, according to the image forming method of the present invention, an image formed of a dye or a pigment is formed on the image receiving material by using the photosensitive material described later (the image formation will be described later), and the image formed image is received. Heat the material. A conventionally known method can be used as a method for heating the image receiving material.
Further, the image receiving material may be heated while being pressed (eg, a method using a heat roller described below).

As a heating method, a heat plate such as a hot plate or a drum may be brought into direct contact with the image receiving material, or heating may be performed while being conveyed using a heat roller.

It is also possible to use air heated to a high temperature, or to heat by high frequency heating or a laser beam. Depending on the type of the image receiving material, it is possible to heat it using an infrared heater. Further, a method of heating by utilizing an eddy current generated by electromagnetic induction can be applied.

Further, the image receiving material on which the image is formed may be heated in a bath in which an inert liquid, for example, a fluorine-based liquid is heated.

Further, in addition to the above-mentioned heating means, the image receiving material may be provided with a heating source for heating. For example, a layer of conductive particles such as carbon black or graphite may be placed in the image receiving material and Joule heat generated when electricity is applied may be used.

When the components forming the formed image are susceptible to the influence of air oxidation, it is effective to carry out deaeration or replacement with an inert gas around the heating portion during heating. Further, when the surface of the image receiving layer is heated to the air side, a method of preventing evaporation of moisture and volatile components and attaching a cover to the surface of the material for heating purpose is also effective.

Generally, the heating temperature is preferably 50 ° C to 200 ° C, more preferably 80 ° C to 150 ° C.
The heating time is generally preferably 1 second to 5 minutes, more preferably 15 seconds to 1 minute. When the image receiving material is heated while being pressurized, the pressure is preferably 1000 kg / cm ² or less, and 500 kg
/ Cm ² or less is more preferable.

As described above, the image forming method of the present invention can obtain an image composed of a dye or a pigment, which is enclosed in a transparent and glossy film.

The imagewise exposure of the photosensitive material, the development treatment, the transfer of the dye or pigment to the image receiving material and the like in the image forming method of the present invention will be described below.

As the exposure method in imagewise exposure, various exposure means can be used, but generally, a latent image of silver halide is obtained by imagewise exposure of radiation including visible light. The type of light source and the amount of exposure can be selected according to the photosensitive wavelength of silver halide (wavelength sensitized when dye sensitization is performed) and sensitivity. The original image may be a monochrome image or a color image.

In the image forming method of the present invention, the heat development treatment is carried out simultaneously with the imagewise exposure or after the imagewise exposure. Since the heat development process is a dry process, it has advantages that the operation is simple and the process can be performed in a short time.

As a heating method in the heat development treatment, various conventionally known methods can be used. Also, Japanese Patent Application Sho 60-
As in the light-sensitive material described in the specification of No. 135568, a heat-generating layer may be provided on the light-sensitive material and used as a heating means. The heating temperature is generally 80 ° C to 200 ° C, preferably 100 ° C to 160 ° C. 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 developing treatment is performed as described above to polymerize the polymerizable compound in any portion of the silver halide latent image formed portion and the latent image not formed portion. it can. In the image forming method, the polymerizable compound in the portion in which the latent image of silver halide is formed is generally polymerized in the above-mentioned development processing, but like the light-sensitive material described in Japanese Patent Application No. 60-21065. By adjusting the type and amount of reducing agent used in the photosensitive material,
It is also possible to polymerize the polymerizable compound in the portion where the latent image of silver halide is not formed. As described above, by polymerizing and curing the polymerizable compound in the portion where the latent image is formed (or the portion where the latent image is not formed), the dye or pigment in the cured portion is immobilized.

In the image forming method of the present invention, the photosensitive material which has been subjected to the development processing as described above is pressed with the above-mentioned image receiving material in a superposed state to transfer the dye or pigment in the uncured portion to the image receiving material. , A color image can be obtained on the image receiving material. Various conventionally known methods can be used for the pressing means. Regarding the general image forming method using the image receiving material, see Japanese Patent Application No. 60-12128.
There is a description in No. 4 specification.

The image forming method of the present invention is to heat the image receiving material on which an image is formed as described above, as described above.

The image forming method of the present invention can be applied to a large number of black and white or color photographing and printing, printing, printing plate, X-ray photographing, medical diagnostic photographing (for example, ultrasonic diagnostic machine CRT photographing), computer graphic hard copy, copying machine and the like. It can be applied to the field of.

Photosensitive materials that can be used in the image forming method of the present invention are described below.

The light-sensitive material used in the image forming method of the present invention comprises a support and a light-sensitive layer comprising a silver halide, a reducing agent, a polymerizable compound, and a dye or a pigment.

Photosensitive materials include silver chloride, silver bromide,
Any grain of silver iodide or silver chlorobromide, silver chloroiodide, silver iodobromide, and silver chloroiodobromide can be used.

The halogen composition of the silver halide grains may be uniform or non-uniform on the surface and inside. Regarding silver halide grains having multiple structures having different compositions on the surface and inside, JP-A-57-154232 and 58-10853 are known.
3, 59-48755, 59-52237, U.S. Pat. No. 4,433,048 and European Patent No. 1.
No. 00984 is described in each specification. Also, Japanese Patent Application Sho 61
A silver halide grain having a high proportion of silver iodide in the shell portion may be used as in the light-sensitive material described in Japanese Patent No. 25576.

There is also no particular limitation on the crystal habit of the silver halide grains. For example, tabular grains having an aspect ratio of 3 or more as in the light-sensitive material described in Japanese Patent Application No. 61-55509 may be used.

The silver halide used in the present invention may be used in combination with two or more kinds of silver halide grains having different halogen compositions, crystal habits, grain sizes and the like.

The grain size distribution of silver halide grains is not particularly limited. For example, monodisperse silver halide grains having a substantially uniform grain size distribution may be used, as in the light-sensitive material described in Japanese Patent Application No. 61-55508.

In the present invention, the average grain size of silver halide grains is preferably 0.001 to 5 μm,
More preferably, it is 001 to 2 μm.

The amount of silver halide contained in the photosensitive layer is 0.1 mg to 1 in terms of silver including an organic silver salt which is an optional component described later.
It is preferably in the range of 0 g / m ² .

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 accelerating (or suppressing) the polymerization of the polymerizable compound.
There are various kinds of substances as the reducing agent having the above function. Examples of the reducing agent include hydroquinones, catechols, p-aminophenols, p-phenylenediamines, 3-pyrazolidones, 3-aminopyrazoles, 4
-Amino-5-pyrazolones, 5-aminouracils,
4,5-Dihydroxy-6-aminopyrimidines, reductones, aminoreductones, o- or p-sulfonamidophenols, o- or p-sulfonamidonaphthols, 2-sulfonamidoindanones, 4-
Sulfonamide-5-pyrazolones, 3-sulfonamidoindoles, sulfonamide pyrazolobenzimidazoles, sulfonamide pyrazolotriazoles, α
-Sulfonamide ketones, hydrazines, etc. By adjusting the type and amount of the reducing agent, it is possible to polymerize the polymerizable compound in the portion where the latent image of silver halide is formed or the portion where the latent image is not formed. In the system in which the polymerizable compound in the portion where the latent image of silver halide is not formed is polymerized, it is particularly preferable to use 1-phenyl-3-pyrazolidones as the reducing agent.

Regarding various reducing agents having the above functions, Japanese Patent Application Nos. 60-22980, 60-29894 and 60-
68874, 60-210657, 60-22
No. 6084, No. 60-227527, No. 60-227.
Nos. 528 and 61-42746 (including those described as developers or hydrazine derivatives)
There is. For the reducing agent, see “The T” by T. James.
heory of the Photographic Process ”Fourth Edition, 291
Pp.334 (1977), Research Disclosure Vol.170, June 1978, No.17029 (9-)
15), and Vol.176, Vol.176, December 1978, first
No. 7643 (pages 22 to 31) also describes. Further, as in the light-sensitive material described in Japanese Patent Application No. 61-55505, a reducing agent precursor capable of releasing the reducing agent under heating conditions or in contact with a base is used instead of the reducing agent. Good. Also in the light-sensitive material of the present invention, the reducing agents and reducing agent precursors described in the above specifications and references can be effectively used. Therefore, "reducing agent" in the present specification
Include the reducing agents and reducing agent precursors described in the above specifications and references.

These reducing agents may be used alone, or as described in each of the above specifications, two or more reducing agents may be mixed and used. When two or more reducing agents are used in combination, the reducing agents may interact with each other by first promoting the reduction of silver halide (and / or organic silver salt) by so-called superadditivity. To cause polymerization of the polymerizable compound via an oxidation-reduction reaction with another reducing agent in which the oxidant of the first reducing agent generated by reduction of silver halide (and / or organic silver salt) coexists (Or suppressing the polymerization) is considered. However, in actual use, it is difficult to specify which of the above actions because the above reactions can occur simultaneously.

In the image forming method of the present invention, the reducing agent may be used in the range of 0.1 to 1500 mol% with respect to 1 mol of silver (including the above-described silver halide and an organic silver salt which is an optional component). preferable.

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. Since the image forming method of the present invention performs heat treatment, it has a high boiling point (for example, a boiling point of 8
It is preferable to use a compound of 0 ° C. or higher). Also,
Since the image forming method of the present invention is intended to immobilize a dye or a pigment by polymerizing and curing the polymerizable compound, the polymerizable compound is a crosslinkable compound having a plurality of polymerizable functional groups in the molecule. preferable.

The polymerizable compounds that can be used in the light-sensitive material are described in the application specifications for a series of light-sensitive materials described above and below.

The polymerizable compound used in the light-sensitive material is generally a compound having addition polymerization or ring-opening polymerization. The compound having an addition-polymerizable group includes a compound having an ethylenically unsaturated group, and the compound having a ring-opening polymerizable group includes a compound having an epoxy group. A compound having an ethylenically unsaturated group is particularly preferable.

The polymerizable compounds may be used alone or in combination of two or more. The light-sensitive material containing two or more polymerizable compounds in combination is described in Japanese Patent Application No. 61-55504. The reducing agent described above or a substance obtained by introducing a polymerizable functional group such as a vinyl group or a vinylidene group into the chemical structure of the dye or pigment described below can also be used as the polymerizable compound of the present invention. Needless to say, the use of a substance that serves as a reducing agent and a polymerizable compound as described above, or a substance that serves as a dye or pigment and a polymerizable compound is also included in the embodiments of the present invention.

In the image forming method of the present invention, the polymerizable compound is preferably used in the range of 0.05 to 1200% by weight based on silver halide. More preferable range of use is 5
To 950% by weight.

There are no particular restrictions on the dyes and pigments that can be used in the image forming method of the present invention, and various types of compounds can be used.

As the dye, it is preferable to use a dye that dissolves in the polymerizable compound used at 1% by weight or more at room temperature. However,
A dye having a low solubility in a polymerizable compound can also be used by using an auxiliary solvent which can sufficiently dissolve the dye.

Examples of dyes that can be used in the image forming method of the present invention include azo dyes, cyanine dyes, oxonol dyes, merocyanine dyes, styrylanthraquinone dyes, triphenylmethane dyes, azomethine dyes,
Indoaniline dye, benzylidene dye, stilbene dye, anthraquinone dye, thiazole dye,
Examples thereof include dioxazine dyes.

The above dyes are described, for example, in "Dye Handbook" (edited by the Society of Organic Synthetic Chemistry, published in 1945).

The pigment that can be used in the image forming method of the present invention is an organic pigment if it is a colored or white powder that is insoluble in water and oily substances (for example, the polymerizable compound used in the present invention). Alternatively, it may be an inorganic pigment. The particle size of the pigment is preferably in the range of 0.01 to 10 μm, more preferably 0.1 to 1 μm. It should be noted that the use of the above pigment has an advantage that the storage stability (weather resistance to heat, light, moisture, air oxidation, etc.) of the obtained image is excellent as compared with the case where the above-mentioned dye is used.

Examples of pigments that can be used in the image forming method of the present invention include inorganic pigments such as emerald green, cadmium red, cadmium yellow, and carbon black.
Ultramarine, chrome vermillion, cobalt blue, cobalt green, cobalt violet, chromium oxide, vermilion (H
gS), strontium yellow, cerulean blue,
Colored pigments such as red iron oxide (Fe ₂ O ₃ ) and white pigments such as titanium dioxide, zinc oxide and barium sulfate can be mentioned.

Examples of organic pigments include toluidine maroon, permanent red AG, Hansa yellow G, pyrazolone red, fast sky blue, phthalocyanine (metal free), phthalocyanine green, phthalocyanine blue, brilliant carmine 6B, brilliant scarlet G, benzidine yellow, benzidine orange. Two
G, methyl violet lake, etc. can be mentioned.

Regarding each of the above-mentioned pigments, for example, "Handbook of New Color Chemistry" (edited by the Japan Color Society, Tokyo University Press, 198)
Pp. 691 to 696, etc., published 0 years ago.

As the dyes and pigments, the substances described above may be used alone or in combination of several kinds. In addition,
When using a plurality of the above dyes or pigments, use them in combination with at least three types of silver halide emulsions that have photosensitivity in mutually different spectral regions (the silver halide emulsion will be described later) so as to correspond to each emulsion. By doing so, a color image can be easily formed. For example, when a combination of a blue-sensitive emulsion, a green-sensitive emulsion and a red-sensitive emulsion is used, the blue-sensitive emulsion is linked with a yellow dye or pigment, the green-sensitive emulsion is linked with a magenta dye or pigment, and the red-sensitive emulsion is cyan. It may be configured so as to interlock with a dye or a pigment.

In the image forming method of the present invention, the dye or pigment is preferably used in the range of 0.5 to 50% by weight of the polymerizable compound used, and more preferably 3 to 20% by weight. .

The light-sensitive material used in the image forming method of the present invention comprises a support having thereon a light-sensitive layer comprising the components described above. The support is not particularly limited, but when heat development processing is planned in the image forming method of the present invention, it is preferable to use a material that can withstand the heating temperature of the development processing. The material that can be used for the support of the photosensitive material is the same as the material that can be used for the support of the image receiving material described above. When the support is made of a porous material such as paper, it should have a certain level of smoothness like the support used in the photosensitive material described in Japanese Patent Application No. 61-52996. Is preferred.

The photosensitive material used in the image forming method of the present invention has a polymerizable compound dispersed in the photosensitive layer in the form of oil droplets, and among the components contained in the photosensitive layer, at least a dye or a pigment is contained in the oil droplets of the polymerizable compound. It is preferably present. An example of a light-sensitive material in which a polymerizable compound is dispersed in the light-sensitive layer in the form of oil droplets is described in Japanese Patent Application No. 60-218603. Other components in the photosensitive layer such as silver halide and a reducing agent may be contained in the oil droplets. For a light-sensitive material containing silver halide in oil droplets, see Japanese Patent Application No.
JP-A-61-25577 and JP-A-61-25577 each describe a light-sensitive material in which a reducing agent is further contained in oil droplets.

The oil droplets of the polymerizable compound are more preferably in the form of microcapsules. Various known techniques can be applied to the microcapsules without particular limitation. An example of a light-sensitive material in which oil droplets of a polymerizable compound are in a microcapsule state is disclosed in Japanese Patent Application No. 60-11.
7089 specification.

There is no particular limitation on the wall material that constitutes the outer shell of the microcapsule. Regarding a photosensitive material using a microcapsule having an outer shell made of a polyamide resin and / or a polyester resin, Japanese Patent Application No. 61-53871 discloses a microcapsule having an outer shell made of a polyurea resin and / or a polyurethane resin. Japanese Patent Application No. 61-53872 for a light-sensitive material using the above, and Japanese Patent Application No. 61-538 for a light-sensitive material using a microcapsule having an outer shell made of an amino-aldehyde resin.
Japanese Patent Application No. 61-538 discloses a photosensitive material using microcapsules having an outer shell made of gelatin.
Japanese Patent Application No. 61-741 discloses a light-sensitive material using microcapsules having an outer shell made of an epoxy resin.
-53875 describes a photosensitive material using microcapsules having a composite resin outer shell containing a polyamide resin and a polyurea resin, see Japanese Patent Application No. 61-53877, which describes a composite resin containing a polyurethane resin and a polyester resin. The light-sensitive materials using microcapsules having shells are described in Japanese Patent Application No. 61-53878.

When the silver halide is contained in the microcapsules, the average grain size of the silver halide grains described above is preferably not more than ⅕ and more preferably not more than ⅕ of the average size of the microcapsules. preferable. By setting the average grain size of the silver halide grains to be one fifth or less of the average size of the microcapsules, a uniform and smooth image can be obtained.

When the silver halide is contained in the microcapsules, it is preferable that the silver halide be present in the wall material that constitutes the outer shell of the microcapsules. The photosensitive material containing silver halide in the wall material of the microcapsule is described in Japanese Patent Application No. 61-11556.

Incidentally, dyes or pigments, polymerizable compounds, silver halides,
Two or more microcapsules in which at least one of the components contained in the microcapsules such as a reducing agent are different may be used in combination. In particular, in the case of forming a full-color image, it is preferable to use together three or more types of microcapsules in which the hue of the dye or pigment contained is different. The light-sensitive material in which two or more kinds of microcapsules are used in combination is described in Japanese Patent Application No. 61-42747.

The optional components that can be contained in the photosensitive layer of the photosensitive material include sensitizing dyes, organic silver salts, various image forming accelerators (eg, bases or base precursors, oils, surfactants, antifoggant functions and / or Compounds having a development promoting function, thermal solvents, compounds having a function of removing oxygen, etc., thermal polymerization inhibitors, thermal polymerization initiators, development terminators, fluorescent whitening agents, antifading agents, halation or anti-irradiation dyes. , Matting agent, anti-smudge agent, plasticizer,
Examples include water releasing agents, binders, photopolymerization initiators, and solvents for polymerizable compounds.

The sensitizing dye that can be used in the image forming method of the present invention is not particularly limited, and a silver halide sensitizing dye known in the photographic art and the like can be used. The sensitizing dye, methine dye, cyanine dye, merocyanine dye,
It includes complex cyanine dyes, holopolar cyanine dyes, hemicyanine dyes, styryl dyes, hemioxonol dyes and the like. These sensitizing dyes may be used alone or in combination. In particular, for the purpose of supersensitization, it is common to use a combination of sensitizing dyes. Further, together with the sensitizing dye, a dye which does not have a spectral sensitizing effect itself, or a substance which does not substantially absorb visible light but exhibits supersensitization may be used together. The addition amount of the sensitizing dye is generally 10 ^-8 per mol of silver halide.
To about 10 ^-2 mol. The sensitizing dye is preferably added at the stage of preparing the silver halide emulsion. Regarding a light-sensitive material obtained by adding a sensitizing dye in the step of forming silver halide grains, see Japanese Patent Application No. 60-139746.
Japanese Patent Application No. 61-55510 describes the light-sensitive materials obtained by adding a sensitizing dye at the stage of preparing a silver halide emulsion after the formation of silver halide grains. . Further, regarding specific examples of sensitizing dyes that can be used in a light-sensitive material, the above-mentioned Japanese Patent Application No. 60-1
39746 and 61-55510.

The use of the organic silver salt in the image forming method of the present invention is particularly effective in the heat development processing. That is, when heated to a temperature of 80 ° C. or higher, the organic silver salt is considered to participate in the redox reaction using the latent image of silver halide as a catalyst. In this case, it is preferable that the silver halide and the organic silver salt are in contact with or in close proximity to each other. Examples of the organic compound that constitutes the organic silver salt include an aliphatic or aromatic carboxylic acid, a thiocarbonyl group-containing compound having a mercapto group or α-hydrogen, and an imino group-containing compound. Among them, benzotriazole is particularly preferable. The above organic silver salt is generally used in an amount of 0.01 to 10 mol, preferably 0.01 to 1 mol, per mol of silver halide. The same effect can be obtained by adding an organic compound (for example, benzotriazole) constituting the organic silver salt to the photosensitive layer instead of the organic silver salt.
Regarding the light-sensitive material using organic silver salt, Japanese Patent Application No. 60-14
1799.

Various image formation accelerators can be used in the image forming method of the present invention. The image forming accelerator has functions such as promotion of redox reaction between silver halide (and / or organic silver salt) and reducing agent and redox agent, and promotion of transfer of dye or pigment from photosensitive material to image receiving material. There is. The image forming accelerator is a base or a base precursor, an oil, a surfactant, a compound having an antifoggant function and / or a development promoting function, a thermal solvent, a compound having an oxygen removing function, etc. Is further classified into. However, these substance groups generally have a composite function, and usually have some of the above-mentioned accelerating effects together. Therefore, the above classification is convenient, and in fact, one compound often has a plurality of functions.

The light-sensitive material using a base or a base precursor is described in Japanese Patent Application No. 60-227528. As for the light-sensitive material using a tertiary amine as a base or base precursor, Japanese Patent Application No. 61-13181 discloses a fine particle dispersion of a hydrophobic organic base compound having a melting point of 80 to 180 ° C. Regarding the light-sensitive material, Japanese Patent Application No. 61-52992, and regarding the light-sensitive material using a hydroxide or salt of an alkali metal or an alkaline earth metal, the description of "light-sensitive material" filed on the same day as the present application (3) There is a description in each book.

When a base or a base precursor is used in the image forming method of the present invention, silver halide, a reducing agent, a polymerizable compound, and a dye or a pigment are contained in the microcapsules described above, and a photosensitive layer outside the microcapsules is used. It is preferred to have a base or base precursor present.
Alternatively, a base or a base precursor may be contained in another microcapsule as in the light-sensitive material described in Japanese Patent Application No. 61-52988. In addition to the above specification, a light-sensitive material containing microcapsules containing a base or a base precursor is a light-sensitive material containing a base or a base precursor dissolved or dispersed in an aqueous solution of a water retention agent in microcapsules. -5298
Japanese Patent Application No. 61-52995 discloses a light-sensitive material containing solid fine particles carrying a base or a base precursor in microcapsules. A base or a base precursor is added to an auxiliary layer (a layer containing a base or a base precursor described later) other than the photosensitive layer as described in the specification of "Photosensitive Material" filed on the same day as the present application (3). You may keep it.

Japanese Patent Application No. 60-294337 discloses a photosensitive material using an antifoggant as a compound having an antifoggant function and / or a development promoting function, and Japanese Patent Application No. 60-294337 discloses a photosensitive material using a compound having a cyclic amide structure. 60
-294338, a light-sensitive material using a thioether compound, Japanese Patent Application No. 60-294339, a light-sensitive material using a polyethylene glycol derivative, Japanese Patent Application No. 60-294340, a thiol derivative. Japanese Patent Application No. 60-2
No. 94341 describes a light-sensitive material using an acetylene compound in Japanese Patent Application No. 61-20438, and a light-sensitive material using a sulfonamide derivative in Japanese Patent Application No. 61-25578. . Further, a photosensitive material using a compound having two or more mercapto groups as a compound having an oxygen removing function is described in Japanese Patent Application No. 61-53880.

The thermal polymerization initiator that can be used in the image forming method of the present invention is a compound that generally undergoes thermal decomposition under heating to generate a polymerization initiation species (particularly a radical), and is usually used as a radical polymerization initiator. Is. Regarding the thermal polymerization initiator, pages 6 to 1 of “Additional Polymerization / Ring-Opening Polymerization”, edited by Editorial Committee of Polymer Society for Polymer Science, 1983, Kyoritsu Shuppan)
It is described on page 8 and the like. Specific examples of the thermal polymerization initiator include azobisisobutyronitrile, 1,1′-azobis (1-cyclohexanecarbonitrile), dimethyl-
Azo compounds such as 2,2′-azobisisobutyrate, 2,2-azobis (2-methylbutyronitrile) and azobisdimethylvaleronitrile, benzoyl peroxide, di-t
-Organic peroxides such as peroxide, dicumyl peroxide, t-butylhydroperoxide, cumene hydroperoxide, inorganic peroxides such as hydrogen peroxide, potassium persulfate, ammonium persulfate, sodium p-toluenesulfinate Etc. can be mentioned. The thermal polymerization initiator is preferably used in the range of 0.1 to 120% by weight, more preferably 1 to 10% by weight, based on the polymerizable compound. In the system in which the polymerizable compound in the portion where the latent image of silver halide is not formed is polymerized, it is preferable to add a thermal polymerization initiator to the photosensitive layer. Further, a light-sensitive material using a thermal polymerization initiator is described in Japanese Patent Application No. 60-210657.

The development terminator which can be used in the image forming method of the present invention is a compound or silver and a silver salt which, after proper development, rapidly neutralize or react with a base to lower the concentration of the base in the film and stop the development. It is a compound that interacts with and suppresses development. Specific examples thereof include an acid precursor that releases an acid when heated, an electrophilic compound that causes a substitution reaction with a coexisting base when heated, a nitrogen-containing heterocyclic compound, and a mercapto compound. Examples of acid precursors include JP-A-60-108837 and JP-A-60-192939.
Oxime esters described in each publication, Japanese Patent Application No. 59-85
Examples thereof include compounds that release an acid by the Rossen rearrangement described in Japanese Patent No. 834. Examples of electrophilic compounds that undergo a substitution reaction with a base upon heating include the compounds described in JP-A-60-230134.

The anti-smudge agent used in the image forming method of the present invention is preferably solid particles at room temperature. Specific examples thereof include starch particles described in British Patent No. 12322347, polymer fine powder described in US Pat. No. 3,625,736, etc., and microcapsule particles containing no color former described in British Patent No. 12359991. Examples thereof include cellulose fine powders described in US Pat. No. 2,711,375, talc, kaolin, bentonite, pyrophyllite, zinc oxide, titanium oxide, and inorganic particles such as alumina. The average particle size of the particles is preferably in the range of 3 to 50 μm in volume average diameter, and more preferably in the range of 5 to 40 μm.

As described above, when the oil droplets of the polymerizable compound are in the microcapsule state, it is more effective that the particles are larger than the microcapsules.

The binder that can be used in the light-sensitive material is the same as the binder that can be used in the image receiving material described above. The light-sensitive material using a binder is described in JP-A-61-69062. The light-sensitive material using a binder together with microcapsules is described in Japanese Patent Application No. 61-52994.

A photopolymerization initiator may be added to the photosensitive layer of the photosensitive material for the purpose of polymerizing the unpolymerized polymerizable compound after image transfer. A light-sensitive material using a photopolymerization initiator is described in Japanese Patent Application No. 61-3025.

When a solvent for a polymerizable compound is used in the light-sensitive material, it is preferably used by enclosing it in a microcapsule different from the microcapsule containing the polymerizable compound. Regarding a photosensitive material using an organic solvent miscible with a polymerizable compound encapsulated in microcapsules, see Japanese Patent Application No. 61-5299.
There is a description in No. 3 specification.

In addition to the above, examples of optional components that can be contained in the photosensitive layer and the usage thereof are also described in the application specification regarding the series of photosensitive materials described above, and Research Disclosure Vol. 170, June 1978. The 17th
No. 029 (pages 9 to 15).

Examples of the layer that can be optionally provided in the light-sensitive material include a heating element layer, an antistatic layer, an anti-curl layer, a peeling layer, a cover sheet or a protective layer, a layer containing a base or a base precursor, and a base barrier layer. You can

For the photosensitive material using the heating element layer, Japanese Patent Application No.
-135568, a photosensitive material provided with a cover sheet or a protective layer is described in Japanese Patent Application No. 61-55507, and a photosensitive material provided with a layer containing a base or a base precursor is applied on the same day as the present application ( Each is described in the specification of 3) "Photosensitive material". Regarding the base barrier layer, the same application as the above application (3)
There is a description in the specification of "Photosensitive material". Furthermore, examples of other auxiliary layers and their usages are also described in the specification of the above-mentioned series of photosensitive materials.

The light-sensitive material used in the image forming method of the present invention can be produced by various methods. Generally, a coating solution is prepared by dissolving, emulsifying or dispersing the components of the light-sensitive layer in a suitable solvent. It can be easily obtained by coating the coating solution on a support and drying.

The present invention will be more specifically described by the following examples, but the present invention is not limited thereto.

[Example 1] Preparation of photosensitive composition A uniform mixture having the following composition was prepared as an oil phase.

Trimethylolpropane triacrylate 20 g Phthalocyanine (metal free) 1 g 1,1'-azobis (1-cyclohexanecarbonitrile) 1 g Ethylcellulose 10% by weight acetone solution 4 g A mixture containing a silver halide emulsion having the following composition was added to the above mixture. In addition, the silver halide emulsion was emulsified by stirring at room temperature in the dark for 10 minutes.

Silver chlorobromide emulsion (containing 10% by weight of silver chlorobromide having a chlorine / bromine molar ratio of 1/1 and 7% by weight of gelatin) 6.0 g 5% by weight aqueous solution of sodium p-dodecylbenzenesulfonate 0.6 g Acetone was evaporated with continuous stirring to prepare a photosensitive composition containing microcapsules (wall material was ethyl cellulose) having a silver halide emulsion as a core substance.

Preparation of Double Microcapsule Liquid The total amount of the photosensitive composition prepared as described above was added to an aqueous solvent having the following composition, and stirred at 40 ° C. for 10 minutes to emulsify.

10% by weight aqueous solution of gelatin 20 g 2% by weight aqueous solution of carboxymethyl cellulose 40 g 5% by weight aqueous solution of sodium p-dodecylbenzene sulfonate 1 g While stirring the above emulsion at 40 ° C., 8 g of 20% by weight anhydrous sodium sulfate aqueous solution was added. The solution was added dropwise over 10 minutes, then 30 g of a 2 wt% aqueous solution of carboxymethyl cellulose was added, and further, 7 g of a 20 weight% aqueous solution of anhydrous sodium sulfate was added dropwise over 10 minutes to cause gelatin coacervation to cause gelatin wall. Was formed. Then, after adding 30 g of water and cooling at 5 ° C. for 10 minutes,
5 g of a 3 wt% aqueous solution of dimethylolurea was added and uniformly mixed. As described above, the double microcapsule liquid (consisting of silver halide emulsion / polymerizable compound / water, W /
O / W double capsule) was prepared. The average particle size of the outer capsule was about 10 μm.

Preparation of Photosensitive Material Using the double microcapsule solution prepared as described above, a mixture having the following composition was prepared and used as a coating solution.

Double microcapsule solution 8.0 g Sorbitol 0.3 g 1-phenyl-4-methyl-4-hydroxymethyl-3-pyrazolidone 1 wt% methanol solution 0.8 g Benzotriazole 2 wt% methanol solution 0.3 g Triethanol 0.5 g of a 10 wt% methanol solution of amine A coating solution prepared as described above is applied onto a polyethylene terephthalate film (thickness 100 μm) and dried to form a photosensitive layer having an average film thickness of about 7 μm. Created.

Preparation of image receiving material A coating solution having the following composition was prepared.

Polyethylene powder (average particle size: about 10 μm) 6 g 2% by weight aqueous solution of polyvinyl alcohol (average degree of polymerization: about 500) 18 g The above coating solution was applied on art paper with a weight of 43 g / m ² to a dry film thickness of about 15 μm. To obtain an image receiving material by forming an image receiving layer by coating and drying.

Image formation and its evaluation The light-sensitive material obtained as described above was passed through a document, and a halogen lamp was used to illuminate at 2000 lux for 1 second.
After imagewise exposure, it was brought into close contact with a hot plate heated to 125 ° C. and developed by heating for 40 seconds. Next, when the light-sensitive material was overlaid on the image receiving material and passed through a 350 kg / cm ² pressure roller, a black image which was positive with respect to the original was formed on the image receiving material. The surface of the image receiving layer had light scattering properties.

Next, when the surface of the image receiving layer was brought into close contact with a hot plate heated to 125 ° C. and heated for 30 seconds, the image receiving layer became a uniform polymer film, and a glossy and clear image was obtained.

Example 2 Preparation of Image Receiving Material Rose Bengal (red dye) 0 was added to the coating liquid used in the preparation of the image receiving material of Example 1 at the portion A1 on the surface of a polyethylene terephthalate film having a thickness of 100 μm shown in FIG. What added 0.1 g was apply | coated and dried so that a dry film thickness might become about 15 micrometers. Further, to the portion A2, the coating liquid used in the preparation of the image receiving material of Example 1 to which 0.1 g of acridine yellow (yellow dye) was added was similarly coated and dried. Further, to the portion B, the coating liquid used in the preparation of the image receiving material of Example 1 to which 3 g of titanium dioxide fine powder was added was similarly coated and dried. As described above, the image receiving layer was formed on the support to prepare an image receiving material.

Image formation and evaluation thereof Using the light-sensitive material used in Example 1 and the image-receiving material prepared as described above, each of A1, A2 and B on the image-receiving material was processed in the same manner as in Example 1. A blue image was formed. Part of the portion B was handwritten with a ballpoint pen, and character information was further written. As described above, the reflection image shown in FIG. 6 was obtained on the surface of the image receiving material.

Next, when the surface of the image receiving layer was brought into close contact with a hot plate heated to 125 ° C. and heated for 30 seconds, the image receiving layer became a uniform polymer film. Although the reflection image itself shown in FIG. 6 did not change, the portions A1 and A2 became a transparent image in which the image was formed on red and yellow, respectively.

When the image receiving material on which an image was formed as described above was projected on a screen using OHP, the projected image shown in FIG. 7 was obtained. As shown in FIG. 7, the portions A1 and A2 were obtained as clear images, and the portion B was not reflected. Therefore, in the portion B, unnecessary information as a projection image can be formed as a reflection image.

Further, by distinguishing the hues of coloring in the portions A1 and A2 according to the type of image information, it was possible to use them as an index for classification of the image receiving material describing each information.

Comparative Example 1 Preparation of Image Receiving Material The image receiving material surface of the image receiving material prepared in Example 1 was 1
It was brought into close contact with a hot plate heated to 25 ° C. and heated for 30 seconds. Thus, a glossy and uniform polymer film was formed on the image receiving material.

Image formation and its evaluation The photosensitive material used in Example 1 was subjected to imagewise exposure and heat development in the same manner as in Example 1.

Then stack the light-sensitive material with the above-mentioned image-receiving material to 350 kg / cm ²
Through a pressure roller.

When the image receiving material was observed by peeling off the photosensitive material, almost no transfer of an image from the photosensitive material to the image receiving material was observed.

[Comparative Example 2] The basis weight used in the preparation of the image receiving material of Example 1 was 43 g /
m ² art paper was used as it was as an image receiving material.

Image formation and its evaluation The photosensitive material used in Example 1 was subjected to imagewise exposure and heat development in the same manner as in Example 1.

Then stack the light-sensitive material with the above-mentioned image-receiving material to 350 kg / cm ²
Through a pressure roller. After peeling the photosensitive material,
An image that is positive with respect to the original was formed on the image receiving material.

Next, the coating liquid used in Example 1 was applied to the image receiving material so that the dry film thickness was about 15 μm, and dried. When the image receiving material was brought into close contact with a hot plate heated to 125 ° C. and heated for 30 seconds, a glossy and uniform polymer film was formed on the image. However, the density of the obtained image is
It was about half of the image visually obtained in Example 1.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing one embodiment of an image receiving material used in the image forming method of the present invention. FIG. 2 is a schematic sectional view showing one embodiment of a photosensitive material used in the image forming method of the present invention. FIG. 3 is a schematic sectional view showing an example of transfer of a dye or a pigment to an image receiving material. FIG. 4 is a schematic sectional view showing a state where the image receiving material is further heated after the image formation. FIG. 5 is a plan view showing a portion to be coated with each coating liquid for forming an image receiving layer in the preparation of the image receiving material of Example 2. FIG. 6 is a plan view showing a reflection image on the image receiving material formed in Example 2. FIG. 7 is a plan view showing a projected image on the image receiving material formed in Example 2. 1: Image Receiving Layer 2: Support of Image Receiving Material 3: Particulate Thermoplastic Compound 4: Binder 5: Photosensitive Layer 6: Support of Photosensitive Material 8: Microcapsules in Which Polymerizable Compound Is Uncured 9: Polymerizable Compound-cured microcapsules 10: Bursting microcapsules 11 and 12: Dye or pigment-transferred portion A1: Red dye-containing coating liquid application portion A2: Yellow dye-containing coating liquid application portion B: Area where the coating liquid containing titanium dioxide is applied

Claims (8)

[Claims] 1. A photosensitive material having a photosensitive layer containing a silver halide, a reducing agent, a polymerizable compound and a dye or a pigment on a support, and imagewise exposed to form a latent image of silver halide, Simultaneous exposure, or after imagewise exposure, 80 to 20
A heat development treatment is carried out by heating at 0 ° C. for 1 second to 5 minutes to polymerize and cure the polymerizable compound in the portion where the latent image is formed,
This immobilizes the dye or pigment in the cured part, and heat-develops the light-sensitive material with an image-receiving material having a layer made of a fine-grained thermoplastic compound on a support, pressurizing it, and uncuring An image forming method, comprising the step of transferring a part of dye or pigment to an image receiving material and heating the image receiving material at 50 to 200 ° C. for 1 second to 5 minutes. 2. The melting point of the thermoplastic compound is 30 to 20.
The image forming method according to claim 1, wherein the image forming method is 0 ° C. 3. The image forming method according to claim 1, wherein the fine particles of the thermoplastic compound have an average particle diameter of 0.05 to 100 μm. 4. The image forming method according to claim 1, wherein the support of the image receiving material has a light transmitting property. 5. A photosensitive material having a photosensitive layer containing a silver halide, a reducing agent, a polymerizable compound and a dye or a pigment on a support is imagewise exposed to form a latent image of silver halide, Simultaneous exposure, or after imagewise exposure, 80 to 20
A heat development treatment is carried out by heating at 0 ° C. for 1 second to 5 minutes to polymerize and cure the polymerizable compound in the portion where the latent image is not formed, thereby immobilizing the dye or pigment in the cured portion, and the heat development treatment is performed. An image-receiving material having a layer made of a particulate thermoplastic compound on a support is superposed on the light-sensitive material, and the dye or pigment in the uncured portion is transferred to the image-receiving material by applying pressure to the image-receiving material. To 200 ° C. for 1 second to 5 minutes. 6. The melting point of the thermoplastic compound is 30 to 20.
The image forming method according to claim 5, wherein the image forming method is 0 ° C. 7. The image forming method according to claim 5, wherein the thermoplastic compound fine particles have an average particle diameter of 0.05 to 100 μm. 8. The image forming method according to claim 5, wherein the support of the image receiving material has a light transmitting property.