JPS6370845A - Photosensitive material - Google Patents

Abstract

PURPOSE:To prevent the deterioration of preservation stability of a photosensitive material effectively and to obtain a distinct picture image having high sensitivity by using a guanidine deriv. having solubility in water in a specified range as the basic compd. CONSTITUTION:Guanidine derivs. to be used for the photosensitive material have <=0.1% water solubility at 25 deg.C, but it is more preferable that the solubility is <=0.01%. The guanidine derivs. having >=10 pKa are selectively used. Such guanidine derivs. expressed by the formula I are preferred. The guanidine derivs. have effect for improving the preservation stability of photosensitive materials, but the possibility of causing contact of the basic compd. with each component in a photosensitive layer during the stages from the prepn. to the use of the photosensitive material is almost completely eliminated by the use of a photosensitive material constituted in such a manner that the basic compd. is isolated from the components contained in the photosensitive layer.

Description

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

[Background of the Invention] A photosensitive material having a photosensitive layer containing silver halide, a reducing agent, and a polymerizable compound on a support is used in an image forming method in which a latent image of silver halide is formed and a polymerizable compound is polymerized. can be used.

Examples of image forming methods are described in Japanese Patent Publications Nos. 45-11149, 47-20741, 49-10697, and 57-138632 and 58-169143. In these methods, when exposed silver halide is developed using a developer, coexisting polymerizable compounds (e.g., vinyl compounds) start polymerizing to form image-like polymeric compounds. be. Therefore, the above method requires a development process using a liquid, and the process requires a relatively long time.

As an improvement on the above method, Japanese Patent Application Laid-Open No. 61-69062 describes a method in which a polymer compound can be formed by dry treatment. In this method, a recording material (photosensitive material) comprising a support supporting a photosensitive layer consisting of a photosensitive silver salt (halogenated), a reducing agent, a crosslinking compound (polymerizable compound), and a binder is exposed for one image. to form a latent image 1
Then, by heat development, a polymer compound is formed in the area where the latent image of the photosensitive silver salt has been formed.

The above image forming method is a method of polymerizing the polymerizable compound in the area where the silver halide latent image is formed. The present inventors have invented a method capable of polymerizing a polymerizable compound in areas where a latent image of silver halide is not formed, and a patent application for this invention has already been filed (Japanese Patent Application No. 60-2106).
No. 57). In this method, a reducing agent is caused to act on a portion where a latent image of silver halide has been formed by heat development, thereby suppressing the polymerization of the polymerizable compound and at the same time promoting polymerization of other portions.

The polymerization reaction in the development process of the image forming method as described above proceeds smoothly under alkaline conditions.

For this reason, a base or a base precursor (hereinafter abbreviated as a basic compound) may be included in the photosensitive layer of the photosensitive material. Basic compounds that can be included in the photosensitive layer of a photosensitive material are described in JP-A-61-73145. However, when a basic compound is added to the photosensitive layer (particularly when a base is added), there is a problem in that the sensitivity of the photosensitive material decreases during the storage period from manufacture to use.

As a means to solve the above problem, basic compounds,
A patent application has been filed for a photosensitive material that is separated from components (silver halide, reducing agent, etc.) contained in the photosensitive layer. Specifically, photosensitive materials containing basic compounds in microcapsules and included in the photosensitive layer (Japanese Patent Application No. 61-52988, No. 61-52989, No. 61-52995); A photosensitive material with a structure in which a layer is provided separately from the photosensitive layer (Japanese Patent Application No. 61-96340); A photosensitive material with a structure in which the support is porous and a basic compound is contained in the support (Patent Application No. 61-96340); Application filed on July 25th (1), "R Photosensitive Material"): 3, silver halide and a polymerizable compound are contained in microcapsules, and a hydrophobic organic material having a melting point of 80°C to 180°C is placed outside the microcapsules. A patent application has been filed for a photosensitive material (Japanese Patent Application No. 61-52992) containing a fine particle dispersion of a basic compound (eg, a guanidine derivative).

[Summary of the Invention] Through research conducted by the present inventor, it has been found that even when the above-described isolation means are used, there is a tendency for the sensitivity of photosensitive materials to decrease slightly during the storage period from the time of manufacture to the time of use. . When the cause of this was investigated, it became clear that it was due to part of the basic compound being dissolved in the coating liquid during the production of the photosensitive material. The general manufacturing method for photosensitive materials consists of the steps of preparing a coating solution by dissolving, emulsifying, or dispersing the components of each layer, such as the photosensitive layer, in an aqueous solvent, applying the coating solution to a support, and drying it. It is something.

According to the research of the present inventor, even if isolation means such as microcapsules are applied, the basic compound dissolves in the coating solution, resulting in a state in which a part of the basic compound comes into contact with each component in the photosensitive layer. It turned out that photosensitive materials were manufactured using this technology. It has also been found that even if a hydrophobic organic base compound is used as the basic compound, a slight amount of the basic compound dissolved in the coating solution similarly causes a decrease in sensitivity.

An object of the present invention is to improve the storage stability of photosensitive materials containing basic compounds.

The present invention is a photosensitive material having a photosensitive layer containing silver halide, a reducing agent, and a polymerizable compound on a support, and further containing a basic compound, wherein the basic compound has a solubility in water at 25°C. 0.1
% or less of guanidine derivatives.

The guanidine derivative is preferably contained in the photosensitive material in a state separated from the silver halide, reducing agent, and polymerizable compound contained in the photosensitive layer.

[Effects of the Invention] The photosensitive material of the present invention is characterized in that a guanidine derivative having a solubility in water at 25° C. of 0.1% or less is used as a basic compound.

In the light-sensitive material of the present invention, the basic compound (guanidine derivative) used has a very low solubility in water. Thereby, during the production of the photosensitive material as described above, it is possible to effectively prevent the storage stability of the photosensitive material from being deteriorated due to dissolution of the basic compound in the coating solution. Therefore, the photosensitive material of the present invention can provide highly sensitive and clear images even after long-term storage or storage under harsh conditions.

Note that even when the basic compound is directly added to the photosensitive layer, the guanidine derivative used in the present invention shows the effect of improving the storage stability of the photosensitive material. It is preferable to apply the present invention to a photosensitive material having a structure in which the guanidine derivatives of the present invention are isolated from each other. That is, by using the guanidine derivative of the present invention as a basic compound together with the above-mentioned isolation means, the basic compound can be isolated from the time of manufacture to the time of use. It is possible to almost completely eliminate the possibility that the photosensitive layer comes into contact with each component in the photosensitive layer.

[Detailed Description of the Invention] The solubility of the guanidine derivative used in the photosensitive material of the present invention in water at 25° C. is 0.1% or less, and furthermore, the solubility is 0.1% or less.
It is preferable that it is 0.01% or less.

Note that when the solubility of the guanidine derivative in water is set to a low value as described above, the basicity of the guanidine derivative may decrease accordingly. Therefore, pK a is 1
It is preferable to select and use 0 or more guanidine derivatives. More preferably, the pKa is 11 or more.

Examples of guanidine derivatives that can be preferably used in the present invention are shown using the following formula.

R' -NH-C=N-R2 In the above formula, R1 and R2 are monovalent groups selected from the group consisting of an alkyl group having 6 or more carbon atoms, an aralkyl group, and a cycloalkyl group having 6 or more carbon atoms. group (each group may have one or more substituents): R1 and R4 are monovalent groups selected from the group consisting of a hydrogen atom, an alkyl group, an aralkyl group, a cycloalkyl group, and an aryl group. (each group may have one or more substituents), or a heterocyclic group in which R3 and R4 together with the adjacent nitrogen atom (a heterocyclic group may have one or more substituents) and the total number of carbon atoms of R1, R2, Rz, and R4 is 2.
It is 5 or more.

It is more preferable that the alkyl group constituting R1, R2, R3, and R4 has 6 to 18 carbon atoms. Examples of the alkyl group (including those having substituents) include hexyl group, Examples include octyl group, dodecyl group, octyloxyethyl group, and butoxyethyl group.

Examples of aralkyl groups that can constitute the above R'', R'', R''M, and R4 (including those with substituents)
Examples include benzyl group, α-methylbenzyl group, β-phenethyl group, p-chlorobenzyl group, p-methoxybenzyl group, and the like.

Examples of the cycloalkyl group (including those having fi!1 substituent) that can constitute R1, R1, R3, and R4 include cyclohexyl group, 4-methylcyclohexyl group, 2-methylcyclohexyl group, etc. can be mentioned.

It is more preferable that the aryl group constituting R3 and R4 has 6 to 24 carbon atoms. Examples of the above aryl group (including those having substituents) include phenyl group, l-naphthyl group, p-tolyl group, p-butoxyphenyl group, 2.4-dimethylphenyl group, 2.5-
Examples include jetoxyphenyl group.

Examples include formation of R3 and R4 together with adjacent nitrogen atoms.

Typical specific examples of the guanidine derivative represented by the above-mentioned formula are shown below, but the present invention is not limited thereto.

N HC12H2% c+*) Its H 0C1□H2% H QC, HI3 CI2H28 Ca Hsy-N H-C= N -Ca Hty
4H9 Ca HIt-N ) (-C= N -Ca HI
7■ N HCa HIt (l 2) Ca HIy-NH-C= N -Ca HI7
N HC1,H,5 Ca Hry-N HC= N -Ca Hsy
(l 4) Ca H+t-N H-C= N Ca Ht
tCa H1t CM) 117 (l 6) Below margin (l 8) H Below margin H ca H1? ca HI7OC148
29 υC to Nil? H,5 4H9 CR3 The guanidine derivatives described above may be used alone or in combination of two or more types.1. Further, when a guanidine derivative is contained in the photosensitive layer of the photosensitive material, the photosensitive layer preferably contains the guanidine derivative in an amount of 50% by weight or less, and more preferably in a range of 0.01 to 40% by weight.

Next, a method for synthesizing the guanidine derivative used in the present invention will be described.

The guanidine derivatives used in the present invention can be synthesized using various methods. For example, reaction of cyanamide derivatives with amines, reaction of amidinosulfone obtained by hydrogen peroxide treatment of thioureas, and amines. reactions, reactions between carbodiimides and amines, etc. are useful. Among these, reactions between carbodiimides and amines are particularly preferred. A specific synthesis example is shown below. Other guanidine derivatives can be similarly synthesized.

[Synthesis Example 1] Preparation of Guanidine Derivative (4) A mixture of 103 g of dicyclohexylcarbodiimide and 291 g of 2,4-di-t-aminophenoxyprobylamine was heated and stirred at 140 to 150°C for 6 hours. This is 6
After cooling to 0°C, 400mM of acetonitrile was added, and the mixture was stirred at 5 to 10°C for 1 hour. The produced white crystals were collected by filtration, washed with cold acetonitrile, and then air-dried. Yield is 1
60g, melting point was 42-44°C.

[Synthesis Example 2] Synthesis of Guanidine Derivative (15) A mixture of 103 g of dicyclohexylcarbodiimide and 113 g of p-n-octylaniline was heated and stirred at 160° C. for 10 hours. After cooling, 200 ml of acetonitrile was added, and the white crystals formed were collected by filtration. This crude product was recrystallized from ethyl acetate/n-hexane to obtain a purified product. The yield was 107 g, and the melting point was 89-91°C.

As mentioned above, the photosensitive material of the present invention preferably contains the guanidine derivative in a state separated from the silver halide, reducing agent, and polymerizable compound contained in the photosensitive layer.

As the above-mentioned isolation means, a photosensitive material having a structure in which a basic compound is contained in microcapsules and included in a photosensitive layer is proposed in a patent application filed in 1983.
1-52988. Further, as another example of a photosensitive material using microcapsules containing a basic compound as described above, a photosensitive material containing a basic compound dissolved or dispersed in an aqueous solution of a water retention agent in a microcapsule was published in a patent application filed in 1983. In Japanese Patent Application No. 52995/1989, a photosensitive material using microcapsules containing solid particles supporting a basic compound is disclosed in Japanese Patent Application No. 52995/1989, in which a basic compound having a melting point of 70°C to 210°C is used in microcapsules. The contained photosensitive materials are described in the specification of "R Photosensitive Material" filed on September 8, 1986 by the present applicant (2).

The guanidine derivative used in the present invention can be used in photosensitive materials that use microcapsules as isolation means as described above.
It can be preferably used as a basic compound. That is, by using the guanidine derivative of the present invention as a basic compound, during the production of microcapsules containing the basic compound, the basic compound will be dissolved in the aqueous solvent and a portion of the basic compound will exist outside the microcapsule. This can be effectively avoided.

As another example of a means for isolating a basic compound, a photosensitive material having a structure in which a layer containing a basic compound is provided separately from a photosensitive layer is disclosed in Japanese Patent Application No. 61-96340, in which a porous support is provided in the support. A photosensitive material containing a basic compound is described in Japanese Patent Application No. 176416/1983.

The guanidine derivative used in the present invention can also be preferably used as a basic compound in a photosensitive material in which a layer other than the photosensitive layer contains a basic compound as an isolation means as described above. That is, by using the guanidine derivative of the present invention as a basic compound, the basic compound can be dissolved in the photosensitive layer or its aqueous coating solution during or after the production of the layer containing the basic compound or the porous support containing the basic compound. Therefore, it is possible to effectively prevent part of the basic compound from diffusing into the photosensitive layer. Note that when a basic compound (guanidine derivative) is included in a layer other than the photosensitive layer as described above, a base barrier layer (generally made of a thermoplastic material) must be provided between the layer containing the guanidine derivative and the photosensitive layer. is preferred.

Still another example of a means for isolating a basic compound is to accommodate silver halide and a polymerizable compound in a microcapsule, and to place fine particles of a hydrophobic organic basic compound having a melting point of 80"C to 180C outside the microcapsule. A photosensitive material having a structure in which a dispersion is placed is described in Japanese Patent Application No. 52992/1983.

The guanidine derivative used in the present invention can also be preferably used as a basic compound in the photosensitive material t1 used as an IM base compound emulsion dispersion or solid dispersion as a separation means as described above.

That is, by using the guanidine derivative of the present invention as a basic compound, it is possible to prevent the basic compound from dissolving into the aqueous coating solution for the photosensitive layer during production, so that almost all of the added basic compound is stable. It will be contained in the photosensitive layer as a fine particle dispersion.

Hereinafter, the microcapsules containing the guanidine derivative of the present invention will be explained in more detail as one of the above-mentioned isolation means.

There are no particular restrictions on the wall material constituting the outer shell of the microcapsules and the manufacturing method thereof, and various known techniques can be applied.

An example of the above-mentioned known technology is US Pat. No. 2,800,457
No. 3,287,154 and British Patent No. 990,443, and Japanese Patent Publication No. 3B-19574, 42-
Interfacial polymerization methods described in US Pat. No. 446 and US Pat. No. 42-771: US Pat. No. 3,418,250 and US Pat. No. 36,603
No. 04 Method by precipitation of polymers of each specification 1; Isocyanate described in U.S. Pat. No. 3,796,669
Method using polyol wall material: U.S. Patent No. 39145
A method using the isocyanate wall material described in US Pat. No. 4,001,140, US Pat. No. 4,087,376 and US Pat. No. 4,089,802. ; US Patent No. 402
Method using wall-forming materials such as melamine-formaldehyde resin and hydroxypropyl cellulose described in No. 5455;
In 5 by polymerization of monomers listed in No. 9079
itu method: British Patent No. 927807 and British Patent No. 965
No. 074 Polymerization dispersion cooling method described in each specification; US Patent No. 3
Examples include the spray drying method described in each specification of No. 111407 and British Patent No. 930422.

The method for producing microcapsules containing a guanidine derivative is not limited to the above, but a particularly preferred method is to emulsify a core material made of oil containing a guanidine derivative and then form a polymer membrane as the outer shell of the microcapsule.
Note that as the oil, a high-temperature organic solvent that is generally used as a solvent for emulsifying and dispersing hydrophobic compounds can be used.

Although the outer shells of the microcapsules as described above can all be disintegrated by applying pressure, in the photosensitive material of the present invention, it is particularly preferable that the outer shells of the microcapsules be constructed from a wall material that has a property of disintegrating by heating. In addition, specifically, it is more preferable that the wall material has a property of collapsing at 60 to 2000 C, and it is particularly preferable that the above temperature is a temperature lower than the melting point of the guanidine derivative contained in the microcapsules.

Examples of wall materials that have the property of collapsing when heated include 6
Waxes having a melting point or softening point in the range of 0 to 200°C can be mentioned. Natural waxes, petroleum waxes, synthetic waxes, and the like are known as waxes, and any of these materials can be used as the wall material constituting the outer shell of the microcapsules used in the present invention.

- Specific examples of waxes that can be particularly preferably used as wall materials constituting the outer shell of microcapsules containing guanidine derivatives are listed below.

l) Natural waxes Vegetable waxes (e.g. candelilla wax, carnauba wax, rice wax, fat wax), animal waxes (e.g. beeswax, lanolin, spermaceti), mineral waxes (e.g. montan wax, osikelite, Ceresin) 2) Petroleum wax, paraffin wax, microwax 3) Synthetic wax, coal-based synthetic wax, polyethylene wax, Fischer-Tropsch wax, oil-based synthetic wax (e.g., hydrogenated castor oil, fatty acid amide, ketone, amine, imide,
Esters) In addition to waxes listed in L, wall materials having a melting point or softening point of 60° C. to 200° C. are particularly preferably wall materials made of polyurea resin and/or polyurethane resin.

As mentioned above, various methods for producing microcapsules using polyurea resins, polyurethane resins, and mixtures thereof as wall materials constituting the outer shell are already known, and none of these methods can be used without using the guanidine derivative of the present invention. It can be utilized for the production of microcapsules containing

In the present invention, the expressions "polyurea resin" and "polyurethane resin" do not necessarily mean resins having only urea bonds and urethane bond bonding groups, respectively. The resins that seem to be replacing
It is included in polyurethane resins, and the same applies to polyurea resins.

Next, examples of polyisocyanates, polyamines, and polyols that can be preferably used for forming the outer shell of microcapsules containing the guanidine derivative of the present invention will be described.

Examples of polyisocyanates include m-phenylene diisocyanate, p-phenylene diisocyanate, 2.
6-tolylene diisocyanate, 2,4-tolylene diisocyanate, naphthalene-1,4-diisocyanate, diphenylmethane-4,4'-diisocyanate, 3
, 3°-dimethoxy-4,4°-biphenyl diisocyanate, 3,3'-dimethyldiphenylmethane-4°4
°-diisocyanate, xylylene-1,4-diisocyanate, xylylene-1,3-diincyanate, 4
．． 4'-Diphenylpropane diisocyanate, trimethylene diisocyanate, hexamethylene diisocyanate, propylene-1,2-diisocyanate, butylene-1,2-diisocyanate, ethyridine diisocyanate, cyclohexylene- 1,2-diisocyanate, cyclohexylene-1,4-diisocyanate, 4.
Triisocyanates such as 4',4''-triphenylmethane triisocyanate, toluene-2,4,6-triisocyanate, polymethylene polyphenylisocyanate, 4,4'-dimethyldiphenylmethane, 2
．． Tetraisocyanates such as 2',5,5'-tetraisocyanate, adducts of hexamethylene diisocyanate and hexanetriol, adducts of 2,4-tolylene diisocyanate and prenzcatechol, tolylene diisocyanate, Examples include polyisocyanate prepolymers such as adducts of isocyanate and hexanetriol, adducts of tolylene diisocyanate and trimethylolpropane, and adducts of xylylene diisocyanate and trimethylolpropane.

Examples of polyamines include ethylenediamine, trimethylenediamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, p-phenylenediamine, m-phenylenediamine, piperazine, 2-
Methylbiperazine, 2,5-dimethylpiperazine, 2-
Examples include hydroxytrimethylenediamine, diethylenetriamine, triethylenetetraamine, diethylaminopropylamine, tetraethylenepentamine, and amine adducts of epoxy compounds.

Examples of polyols include ethylene glycol, 1.4
-butanediol, catechol, resorcinol, hydroquinone, l,2-dihydroxy-4-methylbenzene, 1,3-dihydroxy-5-methylbenzene, 3,
4-dihydroxy-1-methylbenzene, 3,5-dihydroxy-1-methylbenzene, 2,4-dihydroxyethylbenzene, l,3-naphthalenediol, 1°5
-naphthalene diol, 2,7-naphthalene diol,
Examples include 2,3-naphthalene diol. Furthermore, water may be used in place of the above-mentioned polyol.

In the following margin, the silver halide, reducing agent, polymerizable compound, and support constituting the light-sensitive material of the present invention will be sequentially explained.

In the photosensitive material of the present invention, silver halide is used.

Silver chloride, silver bromide, silver iodide or silver chlorobromide, silver chloroiodide,
Either silver iodobromide or silver chloroiodobromide grains can be used.

The halogen composition of silver halide grains may be uniform or non-uniform on the surface and inside. For silver halide grains having a multiple structure with different compositions on the surface and inside, Japanese Patent Laid-Open No. 57 -154232, 58-10853
No. 3, No. 59-48755, No. 59-52237. It is described in the specifications of Fongyo Publication, US Pat. No. 4,433,048, and European Patent No. 100,984. Also, the special request
Silver halide grains having a high proportion of silver iodide in the shell portion may be used, as in the photosensitive material described in No. 1-25576.

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

In the silver halide used in the light-sensitive material of the present invention, two or more types of silver halide grains different in halogen composition, crystal habit, grain size, etc. may be used in combination.

There are no particular restrictions on the grain size distribution of silver halide grains. For example, monodisperse silver halide grains having a substantially uniform grain size distribution may be used, as in the photosensitive material described in Japanese Patent Application No. 61-55508.

In the light-sensitive material of the invention, the average grain size of the silver halide grains is preferably from 0.001 to 5 ILm, more preferably from 0.001 to 2 ILm.

The amount of silver halide contained in the photosensitive layer is 0.1 mg to 1 mg in terms of silver including organic silver salt, which is an optional component described below.
It is preferable to set it within the range of 0 g/m''.Also, in the case of silver using only silver halide.

It is preferable to set it to 0.1 g/rn' or less, and 1 m
g to 90 mg/rn' is particularly preferable.

The reducing agent that can be used in the light-sensitive material 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.

For the above reducing agent.

Hydroquinones, catechols, p-aminophenols, p-phenylenediamines, 3-pyrazolidones, 3-aminopyrazoles, 4-amino-5-pyrazolones, 5-aminouracils, 4,5-dihydroxy-
6-aminopyrimidines, reductones, amyl reductones, 〇- or P-sulfonamidophenols,
0- or p-sulfonamide naphthols, 2-sulfonamide indanones, 4-sulfonamide-5-pyrazolones, 3-sulfonamide indoles, sulfonamide pyrazolobenzimidazoles, sulfonamide pyrazolotriazoles, Examples include α-sulfonamide ketones and hydrazines. By adjusting the type and amount of the reducing agent, it is possible to polymerize the polymerizable compound in either the area where a latent image of silver halide 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 1-phenyl-3-pyrazolidones as the reducing agent.

Regarding various reducing agents having the above-mentioned functions, please refer to Japanese Patent Application Laid-Open No. 61-183640, Japanese Patent Application Publication No. 61-188535, and Japanese Patent Application No. 60-68874, Japanese Patent Application No. 60-210.
No. 657, No. 60-226084, No. 80-2275
No. 27, No. 60-227528, No. 61-42746
There are descriptions in each specification of the issue (including those described as developing agents or hydrazine derivatives). Regarding the above reducing agents, see “The Theory” by T. Jataes.
of thePhotographic Processes
s” 4th edition, 291 to 334 pages (1977), Research Disclosure Magazine Vol. 1.170.1978
No. 17029 (pages 9-15) of June, and the same magazine V
o1.176, l No. 17643 of December 978
No. (pages 22-31). In addition, the special request for
As in the photosensitive material described in No. 55505, instead of the reducing agent, a reducing agent precursor capable of releasing the reducing agent under heating conditions or in contact with a base may be used. In the light-sensitive material of the present invention, the reducing agents and reducing agent precursors described in the above-mentioned specifications and literatures can be effectively used. Therefore, the r-reducing agent 1 in this specification includes the reducing agents and reducing agent precursors described in each of the above-mentioned publications, specifications, and literature.

These reducing agents may be used alone, but as described in the above specifications, two or more reducing agents may be used in combination, or two or more reducing agents may be used. When used together. The interaction of reducing agents is, firstly, to promote the reduction of silver halide (and/or organic silver salts) through so-called superadditivity, and secondly, to promote the reduction of silver halide (and/or organic silver salts).
The oxidized form of the first reducing agent produced by the reduction of the first reducing agent (and/or organic silver salt) causes the polymerization of the polymerizable compound (or suppresses the polymerization) through a redox reaction with other reducing agents coexisting. ), etc. are possible. However, in actual use, the reactions described above can occur simultaneously, so it is difficult to specify which effect is occurring.

Specific examples of the reducing agent include 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-hexadecyloxy-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, 1 -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, 1-trityl-2-(2,6-dichloro-4-cyanophenyl)
hydrazine, 1-trityl-2-phenylhydrazine,
l-phenyl-2-(2,4,6-dolychlorophenyl)hydrazine, 1-(2-(2,5-di-t-pentylphenoxy)butyroyl)-2-((p or 0)-aminophenyl ) hydrazine, 1-(2-(2,5-di-t-pentylphenoxy)butyroyl)-2-((p
or 0)-aminophenyl)hydrazine pentadecylfluorocaprylate, 3-indazolinone, 1-(
3,5-Dichlorobenzoyl)-2-phenylhydrazine, 1-trityl-2-[(2-N-butyl-N-octylsulfamoyl)-4-methanesulfonyl)phenyl]hydrazine, l-(4-( 2,5-di-t-pentylphenoxy)butyroyl)-2-((p or 0)-
methoxyphenyl)hydrazine, l-(methoxycarbonylbenzohydryl)-2-phenylhydrazine, l-
formyl-2-[4-(2-(2,4-thet-pentylphenoxy)butyramido)phenyl]hydrazine,
1-acetyl-2-[4-(2-(2,4-di-t-pentylphenoxy)butyramido)phenyl]hydrazine, l-trityl-2,-[(2,6-dichloro-4-
(N.

N-di-2-ethylhexyl)carbamoyl)phenyl]hydrazine, 1-(methoxycarbonylbenzohydryl)-2-(2,4-dichlorophenyl)hydrazine,
1-Trityl-2-[(2-(N-ethyl-N-octylsulfamoyl)-4-methanesulfonyl)phenyl]hydrazine, l-benzoyl-2-tritylhydrazine, 1-(4-butoxybenzoyl) - 2-tritylhydrazine, 1-(2,4-dimethoxybenzoyl)
Examples include -2-tritylhydrazine, 1-(4-dibutylcarbamoylbenzoyl)-2-tritylhydrazine, and l-(1-naphthoyl)-2-tritylhydrazine.

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

The polymerizable compound that can be used in the photosensitive material of the present invention is not particularly limited, and known polymerizable compounds can be used.

In addition, when heat development treatment is planned as a method of using the photosensitive material, it is preferable to use a compound having a high temperature point (for example, a boiling point of 80° C. or higher) that is difficult to volatilize during heating.

Furthermore, in the embodiment in which the photosensitive layer contains a color image forming substance as an optional component described later, the color image forming substance is immobilized by polymerization and curing of the polymerizable compound, so the polymerizable compound has a plurality of molecules in the molecule. A crosslinkable compound having a polymerizable functional group is preferable. Furthermore, as will be described later, when forming a transferred image using an image-receiving material, Japanese Patent Application No. 61-1
As in the photosensitive material described in No. 50079, it is preferable to use a high-viscosity vlJ material as the polymerizable compound.

Note that polymerizable compounds that can be used in photosensitive materials are described in the application specifications for the series of photosensitive materials described above and below.

Polymerizable compounds used in photosensitive materials generally have 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 photosensitive material of the present invention include acrylic acid and its salts;
Acrylic esters, acrylamides, methacrylic acid and its salts, methacrylic esters, methacrylamides, maleic anhydride, maleic esters, itaconic esters, styrenes, vinyl ethers,
Examples include 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 such as n-butyl acrylate, cyclohexyl acrylate, 2-ethylhexyl acrylate, benzyl acrylate, furfuryl acrylate, and ethoxyethoxyethyl acrylate. Acrylate, dicyclohexyloxyethyl acrylate, nonylphenyloxyethyl acrylate, hexanediol diacrylate, butanediol diacrylate, neopentyl glycol diacrylate, trimethylolpropane triacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipenta Examples include erythritol hexaacrylate, polyoxyethylated bisphenol A diacrylate, hydroxypolyether polyacrylate, polyester acrylate, and polyurethane acrylate.

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, Methacrylate and dimethacrylate of polyoxyalkylenated bisphenol A can be mentioned.

The above polymerizable compounds may be used alone or in combination of two or more. A photographic material using a combination of two or more polymerizable compounds is described in Japanese Patent Application No. 1983-55504. In addition, 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 optional component described below can also be used as the polymerizable compound of the present invention. As mentioned above, 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.

In the light-sensitive material of the present invention, the polymerizable compound is preferably used in an amount of 0.05 to 1200% by weight based on silver halide, and more preferably 5 to 950% by weight.

The photosensitive material of the present invention is formed by providing a photosensitive layer containing the above-mentioned components on a support.

There are no particular restrictions on this support, but if heat development is planned as a method of using the photosensitive material, it is preferable to use a material that can be heated to the processing temperature of the development. Materials that can be used for the support include glass, paper, wood-free paper, coated paper, cast coated paper, synthetic paper, metals and their analogs, polyester, cellulose acetate, cellulose ester, polyvinyl acetal, polystyrene, polycarbonate, polyethylene. Examples include films such as terephthalate, and papers laminated with resin materials and polymers such as polyethylene.

Note that if the support is made of a porous material such as paper, #
Like the support used in the photosensitive material described in the specification of Intercondylar No. 61-52996, it is preferable to have a certain level of smoothness according to the method defined by waviness, and when using a one-paper support, It is preferable to use a paper support with low water absorption, such as the photosensitive material described in Japanese Patent Application No. 183050/1983. Similarly, when using a paper support,
It is preferable to use a paper support having a certain Bekk smoothness, such as the photosensitive material described in the specification of ``R Photosensitive Material'' published on August 15, 1986 by the present applicant, In (4), published by the present applicant. As mentioned above, the support may be made porous and contain the guanidine derivative used in the present invention, as in the photosensitive material described in Japanese Patent Application No. 176416/1983.

Various aspects of the photosensitive material of the present invention, optional components that can be included in the photosensitive layer, auxiliary layers that can be optionally provided on the photosensitive material, etc. will be sequentially described below.

In the photosensitive material of the present invention, it is preferable that the polymerizable compound is dispersed in the photosensitive layer in the form of oil droplets.For examples of photosensitive materials in which the polymerizable compound is dispersed in the photosensitive layer in the form of oil droplets,
This is described in the specification of Japanese Patent Application No. 60-218603. The oil droplets may also contain other components in the photosensitive layer, such as silver halide, a reducing agent, and a one-color image forming substance. For photosensitive materials containing silver halide in oil droplets, see the specifications of Japanese Patent Application Nos. 60-261888 and 61-57511, and for photosensitive materials further containing a reducing agent in oil droplets, Each of these is described in the specification of Japanese Patent Application No. 61-25577. In addition, when silver halide is contained in the oil droplet, the number of silver halide particles contained in the oil droplet is set to 5 or more, as described in Japanese Patent Application No. 160592/1983. It is preferable to do so.

More preferably, the oil droplets of the polymerizable compound are in the form of microcapsules. Various known techniques can be applied to the microcapsules without particular limitations. Note that an example of a photosensitive material in which oil droplets of a polymerizable compound are in the form of microcapsules is disclosed in Japanese Patent Application No. 60-11.
It is described in the specification of No. 7089.

There are no particular restrictions on the wall material constituting the outer shell of the microcapsules.For photosensitive materials using microcapsules with outer shells made of polyamide resin and/or polyester resin, see Japanese Patent Application No. 1987-53871. Regarding a photosensitive material using microcapsules having an outer shell made of polyurea resin and/or polyurethane resin, Japanese Patent Application No. 61-53872 describes a method using microcapsules having an outer shell made of amino aldehyde resin. For photosensitive materials, patent application No. 61-538
No. 73 describes a photosensitive material using microcapsules having an outer shell made of gelatin, which is disclosed in Japanese Patent Application No. 538/1986.
Patent Application No. 74 describes a photosensitive material using microcapsules having an outer shell made of epoxy resin.
Regarding photosensitive materials using microcapsules having a composite resin outer shell containing a polyamide resin and a polyurea resin, Japanese Patent Application No. 53877 discloses a composite resin shell containing a polyurethane resin and a polyester resin. Photosensitive materials using microcapsules having shells are described in Japanese Patent Application No. 53878/1983.

In addition, when using aldehyde-based microcapsules, it is preferable that the amount of residual aldehyde is kept below a certain value, as in the photosensitive material described in Japanese Patent Application No. 176415/1987 by the present applicant.

When silver halide is contained in microcapsules, it is preferable that silver halide be present in the wall material constituting the outer shell of the microcapsules.For photosensitive materials containing silver halide in the wall material of the microcapsules, Special request 1986
It is described in the specification of No.-11556.

Furthermore, microcapsules on tools that contain at least one component contained in the microcapsules, such as silver halide, a reducing agent, a polymerizable compound, and a color image forming substance which is an optional component described later, may be used in combination. Particularly when forming a full-color image, it is preferable to use three or more types of microcapsules containing different color image-forming substances in different hues. For photosensitive materials containing two or more types of microcapsules, patent application No. 61-42
It is described in the specification of No. 747.

The average particle size of the microcapsules is preferably 3 to 20 gm, and the particle size distribution of the microcapsules is preferably uniform over a certain value, as in the photosensitive material described in Japanese Patent Application No. 150080/1980. It is preferable that the distribution is in

In addition, when storing silver halide in microcapsules, the average particle size of the silver halide grains mentioned above is preferably one-fifth or less, and preferably one-tenth or less, of the average size of the microcapsules. is even more preferable. A uniform and smooth image can be obtained by setting the average particle size of the silver halide grains to one-fifth or less of the average size of the microcapsules.

Optional components that can be included in the photosensitive layer of the photosensitive material of the present invention include color image forming substances, sensitizing dyes, organic silver salts, various image formation accelerators (e.g., oils, surfactants, antifogging agents, etc.). and/or compounds with a development accelerating function, thermal solvents, compounds with an oxygen removal function, etc.), thermal polymerization inhibitors, thermal polymerization initiators, development stoppers, fluorescent whitening agents, anti-fading agents, halation or irradiation agents, etc. dyes or pigments for preventing gelation, matting agents, anti-smudge agents, plasticizers,
Examples include a water release agent, a binder, a photopolymerization initiator, a solvent for a polymerizable compound, and the like.

In the photosensitive material of the present invention, a polymer image can be obtained by the above-described structure of the photosensitive layer, but a color image can also be formed by including a color image forming substance as an optional component in the photosensitive layer.

There are no particular restrictions on the color image-forming substance that can be used in the photosensitive material of the present invention, and various types can be used.

i.e. substances that are themselves colored (dyes and pigments)
Also, substances (color formers) that are colorless or pale in themselves but develop color when exposed to external energy (heating, pressure, light irradiation, etc.) or when they come into contact with another component (!1 color agent) are also color image forming substances. include. Incidentally, general photosensitive materials using color image-forming substances are described in the above-mentioned Japanese Patent Laid-Open No. 73145/1983. In addition, for photosensitive materials using dyes or pigments as one-color image forming substances, patent application No. 61-29
For photosensitive materials using leuco dyes, see Japanese Patent Application No. 61-53876, and for photosensitive materials using triazene compounds, see Japanese Patent Application No. 61-9633.
In the specification of No. 9, regarding photosensitive materials using yellow coloring leuco dyes, Japanese Patent Application No. 133091/1982 and No. 6
No. 1-133092 describes a light-sensitive material using a cyan color-forming leuco dye.
Each of these is described in the specification of R Photosensitive Material 1 filed on August 22, 2008 (1).

Dyes and pigments, which are substances that color themselves, are available commercially as well as in various literature (for example, "Dye Handbook" edited by the Organic Synthetic Chemistry Association, published in 1972).

Known pigments listed in "Latest Pigment Handbook" (edited by Japan Pigment Technology Association, 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.

Examples of substances that develop color upon contact with another component include various systems that develop color due to acid-base reactions, redox reactions, coupling reactions, chelate formation reactions, etc. between two or more components. For example, pressure-sensitive copying paper (pages 29-58), Azography (pages 87-
95 pages), known coloring systems such as intense heat coloring by chemical changes (pages 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 Functional Pigments - 1 Collection, pp. 26-32, (198
It is possible to use the coloring system described in June 19, 2013).

Specifically, a coloring system consisting of a coloring agent with a partial structure such as lactone, lactam, or spiropyran used in pressure-sensitive paper, and a resistant substance (coloring agent) such as acid clay or phenols; aromatic diazonium salt, Systems that utilize azo coupling reactions between diazotate, diazosulfonates, naphthols, anilines, active methylenes, etc.; reactions between hexamethylenetetramine and ferric ions and gallic acid; and reactions between phenolphthalein and combreculanes. Chelate-forming reactions such as reactions with alkaline earth metal ions; redox reactions such as reactions between ferric stearate and pyrogallol and reactions between silver behenate and 4-methoxy-1-naphthol can be used.

In addition, when using two types of substances that cause a color-forming reaction when in contact as the solid color image-forming substances described above, one of the substances that cause the above-mentioned color-forming reaction and a polymerizable compound are contained in microcapsules. However, a color image can be formed on the photosensitive layer by allowing other substances among the substances that cause the color-forming reaction to exist outside the microcapsules containing the polymerizable compound. Regarding photosensitive materials that can obtain color images without using an image-receiving material as mentioned above,
It is described in the specification of Japanese Patent Application No. 61-53881.

Sensitizing dyes that can be used in the light-sensitive material of the present invention are:
There are no particular limitations, and silver halide sensitizing dyes known in the photographic technology can be used. The sensitizing dyes include methine dyes, cyanine dyes, merocyanine dyes, 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. Particularly when the purpose is supersensitization, it is common to use a combination of sensitizing dyes. In addition, 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 with the sensitizing dye. The amount of the sensitizing dye added is generally about 10-' to 10-2 mol per mol of silver halide.

The above-mentioned sensitizing dye is preferably added at the stage of preparing a silver halide emulsion, which will be described later. Regarding a light-sensitive material obtained by adding a sensitizing dye at the stage of forming silver halide grains, Japanese Patent Application No. 139746/1984 describes that the sensitizing dye is added to a silver halide emulsion after the formation of silver halide grains. The photosensitive materials obtained by adding the above in the preparation stage are described in Japanese Patent Application No. 55510/1983. Further, specific examples of sensitizing dyes that can be used in light-sensitive materials are also described in the above-mentioned Japanese Patent Application No. 139746/1982 and Japanese Patent Application No. 55510/1981. Further, as in the photosensitive material described in the specification of R Photosensitive Material J filed by the present applicant on September 3, 1986, an infrared light-sensitive sensitizing dye may be used in combination.

Addition of an organic silver salt to the light-sensitive material of the present invention is particularly effective in thermal development processing. Namely.

When heated to a temperature of 80° C. or higher, the organic silver salt is considered to participate in an oxidation-reduction reaction catalyzed by a latent image of silver halide. In this case, it is preferable that the silver halide and the organic silver salt are in contact or in close proximity.
Examples of the organic compound constituting the organic silver salt include aliphatic or aromatic carboxylic acids, thiocarbonyl group-containing compounds having a mercapto group or α-hydrogen, and imino group-containing compounds. Among them, benzotriazole is particularly preferred.The above organic silver salt is generally 0.01 to 10 mol, preferably 0.01 to 10 mol per mol of silver halide. Ol to 1 mol is used. Note that instead of the organic silver salt, organic compounds constituting it (for example,
A similar effect can be obtained by adding benzotriazole) to the photosensitive layer. A photosensitive material using an organic silver salt is described in Japanese Patent Application No. 141799/1982.

One of various image formation accelerators can be used in the light-sensitive material of the present invention. Image formation accelerator includes halogenated 1j7i
(and/or organic silver salt) and a reducing agent, promotion of the transfer of image-forming substances from the photosensitive material to the image-receiving material or image-receiving layer (these will be described later), etc. Functional image formation accelerators include oils, surfactants, compounds with antifogging functions and/or development accelerating functions, thermal solvents, compounds with oxygen removal functions, etc. from the viewpoint of physicochemical functions. further classified. 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, one compound often has multiple functions.

Examples of the image formation accelerator include oils, surfactants, compounds having an antifogging function and/or development accelerating function, thermal solvents, and compounds having an oxygen removing function.

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.

A compound having an antifogging function and/or a development accelerating function can be used for the purpose of obtaining a clear image (an image with a high S/N ratio) having a high maximum density and a low minimum density. For photosensitive materials using an antifoggant as a compound having an antifogging function and/or a development accelerating function, see Japanese Patent Application No. 60-294337, and for photosensitive materials using a compound having a cyclic amide structure. Japanese Patent Application No. 60-294338 describes a photographic material using a thioether compound.
No. 0-294339 describes a photosensitive material using a polyethylene glycol derivative in Japanese Patent Application No. 60-294.
340, Japanese Patent Application No. 60-294341 for photosensitive materials using thiol derivatives, and Japanese Patent Application No. 61-2 for photosensitive materials using acetylene compounds.
No. 0438 and Japanese Patent Application No. 1982-25578 describe photosensitive materials using sulfonamide derivatives.

Useful examples of the thermal solvent include compounds that can serve as solvents for reducing agents, and compounds with high dielectric constants that are known to accelerate the physical development of silver salts. Useful thermal solvents include:
Polyethylene glycols described in U.S. Patent No. 334767'5, derivatives such as oleic esters of polyethylene oxide, beeswax, monostearin, -8
02- and/or -Co--containing high dielectric constant compounds, polar substances described in US Pat. , methyl anisate, biphenyl perate and the like are preferably used.

A compound having an oxygen removing function can be used for the purpose of eliminating the influence of oxygen (oxygen has a polymerization inhibiting effect) on the developed polymer. Examples of compounds having an oxygen removing function include compounds having two or more mercapto groups. Note that a photosensitive material using a compound having two or more mercapto groups is described in Japanese Patent Application No. 53880/1980.

The thermal polymerization initiator that can be used in the photosensitive material 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. be. Regarding thermal polymerization initiators, please refer to “Addition Polymerization and
"Ring-Opening Polymerization" (1983, Kyoritsu Shuppan), pages 6 to 18, etc. Specific examples of thermal polymerization initiators include:
Azobisisobutyronitrile, 1,1'-azobis(1
-cyclohexanecarbonitrile), dimethyl-2,2
゛-azobisisobutyrate, 2.2-azobis(2-
methylbutyronitrile), azo compounds such as azobisdimethylvaleronitrile, organic peroxides such as benzoyl peroxide, di-t-peroxide, dicumyl peroxide, t-butyl hydroperoxide, cumene hydroperoxide, Examples include inorganic peroxides such as hydrogen peroxide, potassium persulfate, and ammonium persulfate, and sodium p-toluenesulfinate. The thermal polymerization initiator is
It is preferably used in an amount of 0.1 to 120% by weight, more preferably 1 to 10% by weight, based on the polymerizable compound. In a system in which a polymerizable compound is polymerized, it is recommended to add a thermal polymerization initiator to the photosensitive layer.For photosensitive materials using a thermal polymerization initiator, see Japanese Patent Application No. 60-210657. There is a description.

The development stopper that can be used in the photosensitive material of the present invention is a compound 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, or silver and silver salts. It is a compound that interacts to inhibit development. Specific examples include acid precursors that release acids when heated, electrophilic compounds that cause a substitution reaction with a coexisting base when heated, nitrogen-containing heterocyclic compounds, mercapto compounds, and the like. Examples of acid precursors include oxime esters described in JP-A-60-108837 and JP-A-60-192939, and JP-A-60-2301.
Examples include compounds that release an acid through Roxene rearrangement, as described in Publication No. 33. In addition, as an example of an electrophilic compound that causes a substitution reaction with a base when heated, JP-A-60
Compounds described in JP-A-230134 can be mentioned.

A dye or pigment may be added to the photosensitive layer of the photosensitive material of the present invention for the purpose of preventing halation or irradiation. Regarding photosensitive materials in which a white pigment is added to the photosensitive layer for the purpose of preventing halation or irradiation, the present applicant's July 2, 1988
This is described in the specification of V Photosensitive Materials 1 filed on the 3rd.

The anti-smudge agent used in the photosensitive material of the present invention 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. 3,625,736, etc., microcapsule particles containing no color former as described in British Patent No. 1,235,991, etc., U.S. Pat. No. 2,711
Cellulose fine powder, talc, kaolin, bentonite, waxite, zinc oxide, titanium oxide, described in No. 375 specification,
Examples include inorganic particles such as alumina. The average particle size of the particles is preferably in the range of 3 to 50 ILm, more preferably in the range of 5 to 40 ILm in volume average diameter. 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 of the present invention or the image-receiving material described below can be contained alone or in combination in the photosensitive layer or image-receiving layer (described later). It is preferable to use mainly wood-philic binders as this binder. Representative hydrophilic binders include transparent or semi-transparent wood-philic binders, such as gelatin, gelatin derivatives, cellulose derivatives, starch, gum arabic, etc. Natural substances such as and polyvinyl alcohol.

Other synthetic polymeric substances include synthetic polymeric substances such as water-soluble polyvinyl compounds such as polyvinylpyrrolidone, acrylamide polymers, etc., especially in the form of latexes, dispersed vinyl compounds which increase the dimensional stability of photographic materials. There is. Incidentally, a photosensitive material using a binder is described in JP-A-61-69062. Further, a photosensitive material using a binder together with microcapsules is described in Japanese Patent Application No. 1983-52994.

A photopolymerization initiator may be added to the photosensitive layer of the photosensitive material of the present invention for the purpose of polymerizing unpolymerized polymerizable compounds after image transfer. , as described in the specification of Japanese Patent Application No. 1983-3025.

When a solvent for a polymerizable compound is used in the photosensitive material of the present invention, it is preferable to encapsulate the solvent in a microcapsule separate from the microcapsule containing the polymerizable compound. Regarding photosensitive materials using organic solvents that are miscible with compounds, patent application No. 1986-
It is described in the specification of No. 52993.

In addition to those mentioned above, examples of optional components that can be included in the photosensitive layer and how they are used can also be found in the application specifications related to the above-mentioned series of photosensitive materials and Research Disclosure Magazine Vol.

No. 17029, June 1978 (pages 9-15).

Layers that can be optionally provided in the photosensitive material of the present invention include an image-receiving layer, a heating 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 layer containing a base or a base precursor. Barrier layers, etc. may be mentioned.

Instead of using the image-receiving material described later as a method of using the photosensitive material, the image-receiving layer described above may be provided on the photo-sensitive material and an image may be formed on this layer. It can be configured similarly to. Details of the image receiving layer will be described later.

Regarding photosensitive materials using one heating layer, a patent application filed in 1986
For photosensitive materials provided with a cover sheet or a protective layer, see Japanese Patent Application No. 61-55507, and for photosensitive materials provided with a layer containing a base or base precursor, see Japanese Patent Application No. 61-96340. It has been mentioned above that the guanidine derivatives used in the present invention, which are described in each of the above patents, can be applied to a layer containing a base or a base precursor as described above. Incidentally, the base barrier layer is also described in the above-mentioned Japanese Patent Application No. 61-96340. Further, examples of other auxiliary layers and their usage are also described in the application specifications related to the above-mentioned series of photosensitive materials.

The method for producing the photosensitive material of the present invention will be described below.

Various methods can be used to manufacture photosensitive materials, but the general manufacturing method is to prepare a coating solution by dissolving, emulsifying, or dispersing the components of the photosensitive layer in an appropriate solvent, and then coating. This process consists of applying a liquid onto a support as described above and drying it to obtain a photosensitive material.

Generally, each of the above-mentioned coating liquids 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. Some of the components of the photosensitive layer can be added during or after the preparation of the liquid composition or coating solution. Furthermore, as described below, a method of preparing a secondary composition by further emulsifying an oil-based (or aqueous) composition containing the components on the tool in an aqueous (or oil-based) solvent can also be used. .

Regarding the main components contained in the photosensitive layer, methods for preparing a liquid composition and a coating solution are shown below.

In producing the light-sensitive material of the present invention, silver halide is preferably prepared as a silver halide emulsion. Although there are various methods known in photography for preparing silver halide emulsions, there are no particular limitations on the production of the light-sensitive material of the present invention. Silver halide emulsions can be prepared using any of the acid method, neutral method, and ammonia method. The reaction method for the soluble silver salt and the soluble halogen salt may be a one-sided mixing method, a simultaneous mixing method, or a combination thereof. A back-mixing method in which particles are mixed under conditions of excess silver ion and a Chondral double-jet method in which PAg is kept constant can also be employed.

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.

In preparing the silver halide emulsion used in producing the light-sensitive material of the present invention, it is preferable to use a wood-philic colloid (eg, gelatin) as a protective colloid. By preparing a silver halide emulsion using a hydrophilic colloid, the sensitivity of the light-sensitive material of the present invention produced using this emulsion is improved. Silver halide emulsions are produced by using ammonia, organic thioether derivatives (see Japanese Patent Publication No. 47-386) and sulfur-containing compounds (Japanese Patent Application Laid-open No. 53-14.43) as silver halide solvents in the stage of forming silver halide grains.
(see Publication No. 19), etc. can be used. Further, in the process of particle formation or physical ripening, cadmium salt, zinc salt, lead salt, thallium salt, etc. may be allowed to coexist. Furthermore, for the purpose of improving high illuminance failure and low illuminance failure, water-soluble iridium fillers such as iridium chloride (I-valent or ■-valent), ammonium hexachloroiridium salt, 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. Although the silver halide emulsion may be used without post-ripening, it is usually used after being chemically sensitized.

In emulsions for conventional sensitive materials, known sulfur sensitization methods, quantitative sensitization methods, noble metal sensitization methods, etc. can be used alone or in combination.

In addition, when adding a sensitizing dye to a silver halide emulsion,
Patent Application No. 139746/1986 and 61-5 mentioned above
It is preferable to add it at the stage of preparing a silver halide emulsion as in the photographic material described in No. 5510. In addition, the above-mentioned fog prevention function and/or development acceleration Ja
When a nitrogen-containing heterocyclic compound is added as a compound having an I-shape, it is preferably added at the stage of forming or ripening silver halide grains in the preparation of a silver halide emulsion. A method for producing a photosensitive material in which a nitrogen-containing heterocyclic compound is added at the stage of forming or ripening silver halide grains is described in Japanese Patent Application No. 3024/1983.

When the above-described organic silver salt is included in the photosensitive layer, the organic silver salt emulsion can be prepared by a method similar to the method for preparing the silver halide emulsion described above.

In producing the photosensitive material of the present invention, the polymerizable compound can be used as a medium for preparing the composition of other components in the photosensitive layer. For example, silver halide (including silver halide emulsions), reducing agents.

A color image-forming substance or the like 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 added, it is preferable to include a monopolymerizable 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, it is preferable that a copolymer consisting of a hydrophilic repeating unit and a hydrophobic repeating unit is dissolved in the polymerizable compound used for preparing the photosensitive composition.For photosensitive compositions containing the above-mentioned copolymer, , special application 1986-
It is described in the specification of No. 261887.

Further, 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 having the above-mentioned silver halide emulsion as a core material is described in Japanese Patent Application No. 1983-5750.

It is preferable to use the polymerizable compound (including those containing other constituent components like the above photosensitive composition) in the form of an emulsion in an aqueous solvent. Also, special request in 1986
When oil droplets of a polymerizable compound are microencapsulated, as in the photosensitive material described in No. 117089, a wall material necessary for microencapsulation is added to the emulsion, and the outside of the microcapsules is A shell-forming treatment can also be carried out at this emulsion stage. Further, a reducing agent or other optional components may be added at the stage of the emulsion.

Examples of the above-mentioned microencapsulation method include a method using coacervation of a tree-friendly wall-forming material in US Pat. No. 2,800,457 and US Pat. No. 2,800,458; US Pat. No. 1 and Specifications 1 and Special Publication No. 38-1957
4, 42-446, and 42-7719; US Pat. No. 3,418,250 and US Pat. No. 3,660,304. Method by polymer precipitation described in each Specification 1: described in US Pat. No. 3,796,669. Method using the isocyanate-polyol wall material described in U.S. Pat. No. 3,914,511; Urea-formaldehyde of U.S. Pat. No. 4,001,140, U.S. Pat. A method using a urea-formaldehyde-resircinol-based wall-forming material;
Method using wall-forming materials such as melamine-formaldehyde resin and hydroxypropyl cellulose described in U.S. Pat. in 5 situ method: British Patent No. 927807 and British Patent No. 965074 Polymerization dispersion cooling method described in each specification: U.S. Patent No. 3111407 and British Patent No. 93
Examples include the spray lying method described in each specification of No. 0422. Although the method for microcapsulating oil droplets of a polymerizable compound is not limited to the above, a method in which a core material is emulsified and then a polymer film is formed as a microcapsule wall is particularly preferred.

Regarding photosensitive microcapsules that can be used in the production of photosensitive materials, Japanese Patent Application No. 61-11556,
No. 61-11557, No. 61-53871, No. 61
-53872, 61-53873, 61-53
No. 874, No. 61-53875, No. 61-53877
No. 61-53878.

If one of the above-mentioned emulsions of polymerizable compounds (including the microcapsule solution subjected to microencapsulation treatment) is a photosensitive composition containing silver halide, it can be used as is as a coating solution for photosensitive materials. It can be used as Emulsions other than those mentioned above can be mixed with a composition of other components such as a silver halide emulsion and optionally an organic 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.

When the guanidine derivative used in the photosensitive material of the present invention is included in the photosensitive layer, it can be added at any stage of the manufacturing process of the coating solution for the photosensitive layer as described above.

In addition, when the guanidine derivative is contained in microcapsules, when the guanidine derivative is contained in M (a layer containing a base or a base precursor) other than the photosensitive layer, when the guanidine derivative is contained in the support by making the support porous, etc. It can be easily manufactured according to the manufacturing method described in each of the specifications mentioned above.

The photosensitive material of the present invention is produced by applying the photosensitive layer coating solution prepared as described above onto a support and drying it.

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

Margin below A method of using the photosensitive material of the present invention will be described below.

The light-sensitive material of the present invention is used after being subjected to development treatment simultaneously with imagewise exposure or after imagewise exposure.

Although various exposure means can be used as the above-mentioned exposure method, a latent image of silver halide is generally obtained by imagewise exposure to radiation including visible light. The type of light source and amount of exposure
Sensitive wavelength of silver halide (if dye sensitization is performed,
It can be selected depending on the sensitized wavelength) and sensitivity. Further, the original image may be a black and white image or a color image.

The light-sensitive material of the present invention is subjected to a development treatment simultaneously with the above imagewise exposure or after the imagewise exposure. You may do so.

In addition, as mentioned above, the method of JP-A-61-2003, which performs heat development processing,
Since the method described in Publication No. 69062 is a dry process,
It has the advantage of being easy to operate and can be processed in a short time. Therefore, the development treatment for the photosensitive material of the present invention is as follows:
The latter is especially good.

As the heating method in the above heat development treatment, various conventionally known methods can be used. Further, as in the photosensitive material described in the above-mentioned Japanese Patent Application No. 135568/1980, a heat generating layer may be provided on the photosensitive material and used as a heating means. Further, as in the image forming method described in Japanese Patent Application No. 61-55506, heat development may be carried out while suppressing the amount of oxygen present in the photosensitive layer. The heating temperature is generally 80°C to 200°C, preferably 100°C to 1
The temperature is 60°C. The heating time is generally 1 second to 5 minutes.
Preferably it is 5 seconds to 1 minute.

The photosensitive material of the present invention can be thermally developed as described above to polymerize the polymerizable compound in the area where the silver halide latent image is formed or the area where the silver halide latent image is not formed. can. In the light-sensitive material of the present invention, the polymerizable compound in the area where the latent image of silver halide is generally polymerized in the heat development process, but the photosensitive material described in the above-mentioned Japanese Patent Application No. 60-210657 is polymerized. By adjusting the type, amount, etc. of the reducing agent like the material, it is also possible to polymerize the polymerizable compound in the area where the silver halide latent image is not formed.

As described above, the photosensitive material of the present invention allows a polymer image to be obtained on the photosensitive layer. Dye images can also be obtained by fixing dyes or pigments in polymers.

The photosensitive material of the present invention is disclosed in the above-mentioned Japanese Patent Application No. 61-53881.
When the photosensitive material is structured like the one described in the specification, the developed photosensitive material is pressurized to destroy the microcapsules and bring two types of substances that cause a coloring reaction into contact with each other. Color images can be formed thereon.

The image-receiving material can also be used to form an image on the image-receiving material.

The image-receiving material will be explained below in the margins. The general image forming method using an image-receiving material or an image-receiving layer is described in Japanese Patent Application No. 121284/1984.

As a support for the image-receiving material, baryta paper can be used in addition to supports that can be used for photosensitive materials described below. Note that when a porous material such as paper is used as the support for the image-receiving material, it is preferable that it has a certain level of smoothness as in the image-receiving material described in Japanese Patent Application No. 61-52990. . Furthermore, an image-receiving material using a transparent support is described in Japanese Patent Application No. 61-52991.

Image-receiving materials generally have an image-receiving layer on a support.

The image-receiving layer can be constructed in any desired form using various compounds according to the coloring system of the color image-forming substance described above. In addition, when forming a polymer image on an image-receiving material, when a dye or a pigment is used as a color image-forming substance, the image-receiving material may be composed only of the above-mentioned support.

For example, when using a coloring system consisting of a color former and a color developer, the image receiving layer can contain the color developer. Further, the image-receiving layer can also be configured as a layer containing at least one mordant. The mordant can be selected from compounds known in the photographic technology, taking into consideration conditions such as the type of color image forming substance, and used. Note that, if necessary, two or more image-receiving layers may be constructed using a plurality of mordants having different mordant powers.

The image-receiving layer preferably contains a polymer as a binder. As the above-mentioned binder and No. 1, binders that can be used in the photosensitive layer of the photosensitive material described above can be used. Further, as in the image-receiving material described in Japanese Patent Application No. 61-53879, a polymer with low oxygen permeability may be used as the binder.

The image-receiving layer may contain a thermoplastic compound. When a thermoplastic compound is contained in the image-receiving layer, it is preferable to form the image-receiving layer itself as an aggregate of thermoplastic compound fine particles. The image-receiving layer having the above structure has the advantage that it is easy to form a transferred image, and that a glossy image can be obtained by heating after image formation. 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 less.For an image receiving material having an image receiving layer containing thermoplastic compound fine particles as described above, Japanese Patent Application No. 61-1249
No. 52 and No. 61-124953.

The image-receiving layer may contain a photopolymerization initiator or a thermal polymerization initiator. In image formation using an image receiving material,
The color image forming material is transferred together with the unpolymerized polymerizable compound as described below. Therefore, a photopolymerization initiator or a thermal polymerization initiator can be added to the threatened layer for the purpose of smoothly proceeding with the curing process (fixing process) of the unpolymerized polymerizable compound. Further, regarding an image receiving material having an image receiving layer containing a photopolymerization initiator, see Japanese Patent Application No. 61-3025, and regarding an image receiving material having an image receiving layer containing a thermal polymerization initiator, see Japanese Patent Application No. 61-55502. There are descriptions for each.

A dye or pigment can be included in 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 an image a specific color. Further, a dye or a pigment may be included in the image-receiving layer for the purpose of making it easier to distinguish between the front and back sides of the image-receiving material. As the above-mentioned dye or pigment, various known substances including dyes or pigments that can be used in image formation can be used, but there is a risk that this dye or pigment may damage the image formed in the image-receiving layer. In some cases, it is preferable to lower the dyeing density of the dye or pigment (for example, to reduce the reflection density to 1 or less), or to use a dye or pigment that has the property of being decolored by heating or light irradiation.

An image-receiving material having an image-receiving layer containing a dye or pigment that has the property of being decolored by heating or light irradiation is described in Japanese Patent Application No. 1983-96339.

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 functions as a white reflective layer, the white pigment has a log
It is preferable to use the amount in the range of 100 g to 100 g.

When the dye or pigment described above is contained in the image-receiving layer, it may be contained uniformly or unevenly distributed in a portion. For example, a part of the reflected image can be made into a projected image by forming the support described later from a material having light transmittance and including the white pigment in a part of the image-receiving layer.

By doing so, image information that is unnecessary in the projected image can also be written as a reflected image in the image-receiving layer portion containing the white pigment.

The image-receiving layer may be configured as a layer on the tool depending on the functions described above. Further, the layer thickness of the image-receiving layer is 1 to 1
It is preferably 100 p, and more preferably 1 to 20 pm.

Note that a protective layer may be further provided on the image-receiving layer, or a layer made of aggregates of fine particles of a thermoplastic compound may be provided on the image-receiving layer. An image-receiving material in which a layer consisting of aggregates of fine particles of a thermoplastic compound is provided on the image-receiving layer is described in Japanese Patent Application No. 55503/1983.

Furthermore, an adhesive or a layer containing an adhesive and an M release paper may be sequentially applied to the surface of the support opposite to the side on which the image-receiving layer is provided. Regarding image-receiving materials, patent application No. 61-16926 filed by the present applicant
It is stated in the Specification No. 4.

The following margin The photosensitive material of the present invention is developed as described above,
By pressing the above image-receiving materials in a stacked state,
The unpolymerized polymerizable compound can be transferred to an image-receiving material to obtain a polymer image on the image-receiving material. Regarding the above-mentioned pressurizing means, various conventionally known methods can be used.

Further, in an embodiment in which the photosensitive layer contains a color image forming substance,
By performing a similar development process, the polymerizable compound is polymerized and cured, thereby immobilizing the color image forming material in the cured portion. Then, by pressing the photosensitive material and the image-receiving material in a superimposed state, the uncured portion of the color image-forming substance is transferred to the image-receiving material, and a color image can be obtained on the image-receiving material.

After forming an image on the image-receiving material as described above, the image-receiving material may be heated as in the image forming method described in Japanese Patent Application No. 61-55501. The above method also has the advantage that the unpolymerized polymerizable compound transferred onto the image-receiving material is polymerized and the storage stability of the obtained image is improved.

The photosensitive material of the present invention is a photosensitive material for black and white or color photography and printing, a printing photosensitive material, a printing plate, an XLL photosensitive material, a medical photosensitive material (for example, an ultrasonic diagnostic CRT photo-11 photosensitive material), a computer graphic hard copy. It has many uses such as photosensitive materials and photosensitive materials for copying machines.

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

The following margin is [Example 1 Preparation of silver cohalide 40g of gelatin and potassium bromide are dissolved in 3Li of water,
The mixture was heated to 50° C., and a solution of 34 g of nitric acid fi dissolved in 200 mJ1 of water was added over 10 minutes while stirring. Thereafter, 3.3 g of potassium iodide dissolved in 100 mM of water was added over 2 minutes. The pH of the silver iodobromide emulsion thus obtained was adjusted, and the emulsion was precipitated to remove excess salt, and then the pH was adjusted to 6.0 to obtain a silver iodobromide emulsion with a yield of 400 g.

Preparation of benzotriazole 28 g of gelatin and 13.2 g of benzotriazole are mixed with 3 parts of water.
000 ml. This solution was stirred while being maintained at 40° C., and a solution of 17 g of silver nitrate dissolved in 100 mfL of water was added over 2 minutes.

Excess salt was precipitated and removed by adjusting the pH of the resulting emulsion. Thereafter, the pH was adjusted to 6.30 to obtain a benzotriazole silver emulsion. The yield of emulsion was 400 g.

Preparation of Composition 100 g of trimethylolpropane triacrylate, 0.40 g of the following Nocobo')mer, Pergus Scriptret 1-6-B (manufactured by Ciba Geigy)6. OOg was dissolved. To 18°00 g of the above solution, add 1.2 g of the following hydrazine conductor (reducing agent) and the following developer (reducing agent).
1-22 g of methylene chloride 4. A solution in Og was added. Furthermore, 4.06 g of silver halide emulsion prepared as above, 3.35 g of benzotriazole silver emulsion, 11 g of benzotriazole O, and Emarex NP-
8 (manufactured by Nippon Emma 1 Legion Co., Ltd.) and stirred for 5 minutes at 15,000 revolutions per minute using a homogenizer to obtain a photosensitive composition.

Below margin (copolymer) CO□CIItCH2N(CHi) 2 CO
□CH.

CH.

■ 1+ctt2-c +-2゜C02C4tls (Hydrazine derivative) (Developer) 18.6% aqueous solution of isopane (manufactured by Kuraray Co., Ltd.) 10.51
g was added to 48.56 g of a 2.89% aqueous solution of pectin to obtain an aqueous solution whose pH was adjusted to 4.0 using 10% sulfuric acid, the photosensitive composition was added to this aqueous solution, and a homogenizer was added. Stir for 2 minutes at 7000 rpm using
The above photosensitive composition was emulsified in an 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, 'Wi acid ammonium 8.
Add 2.74 g of 76% aqueous solution one by one, and add 60 g of 76% aqueous solution without stirring.
Heating was continued for 2 hours at °C. Thereafter, the pH was adjusted to 7.0 using a 10% aqueous sodium hydroxide solution, and 3.62 g of a 30.9% aqueous sodium bisulfite solution was added to prepare a dispersion of photosensitive microcapsules.

Preparation of group-containing microcapsules Melt 5g of stearyl alcohol in a constant temperature bath at 80°C or higher, dissolve 2g of phenylsulfonylpiperidine and 5g of the guanidine derivative below, and keep it warm (80°C). (Liquid I). on the other hand,
Polyvinyl alcohol (PVA-205; manufactured by Kuraray Oki)
20g of a 10% aqueous solution was kept at 80°C, and the above liquid I was roughly dispersed therein, and the mixture was heated at 150°C using a homogenizer.
Emulsification was carried out for 2 minutes at 00 r, p, s. Then 100
The mixture was stirred at 0 r, p, m for 30 minutes and allowed to cool. 10 more
g of water was added to obtain a dispersion of base-containing microcapsules having wax as a wall material.

The pH of the base-containing microcapsule dispersion prepared as described above was adjusted to 5.0. Then, the log of this dispersion of base-containing microcapsules and 10 g of the dispersion of photosensitive microcapsules prepared as described above were mixed, and 10 g of Emarex NP-8 (made by Nippon Emulsion ■)
% aqueous solution was further added and coated onto a 1100p thick polyethylene terephthalate film using a #40 rod and dried at room temperature to prepare a photosensitive material according to the present invention.

[Example 2] After dissolving 3.8 g of the guanidine conductor used in the preparation of the base-containing microcapsules in Example 1 in 8 g of methylene chloride for salt-containing microcapsules, an adduct of xylylene diisocyanate and trimethylolpropane was prepared. 3 g was added and dispersed in a 5% aqueous solution of polyvinyl alcohol (PVA-205; manufactured by Kuraray ■). Using a homogenizer, this liquid was heated to 9000
The mixture was stirred at r, p, m for 1 minute to form an emulsified state. The average particle size of the emulsion was approximately 1-2 gm. This emulsion was heated and stirred at 40° C. for 2 hours to obtain a dispersion of base-containing microcapsules.

The pH of the base-containing microcapsule dispersion prepared above was adjusted to 5.0 using a 10% aqueous solution of sulfur. And this base-containing microcapsule dispersion Lo
g, and 10 g of the photosensitive microcapsule dispersion prepared in Example 1 were mixed, and Emarex NP-8
1 g of a 10% aqueous solution (manufactured by Nippon Emulsion ■) was further added and coated onto a 11001 L thick polyethylene terephthalate film using a well 40 lot, followed by drying at room temperature to produce a photosensitive material according to the present invention.

Add 11 g of 40% sodium hexametaphosphate aqueous solution to 150 g of water, further mix 34 g of zinc 3,5-di-α-methylbenzylsalicylate and 82 g of 55% calcium carbonate slurry, and mix with a mixer. Roughly dispersed. The liquid was dispersed using a Dynamyl disperser, and 6 g of 50% SBR latex and 55 g of 8% polyvinyl alcohol were added to 200 g of the obtained liquid and mixed uniformly. This mixed solution was uniformly applied onto art paper weighing 143 g/rn' to a wet film thickness of 30 pm, and then dried to prepare an image-receiving material.

Evaluation of Photosensitive Materials Each of the photosensitive materials obtained in Example 1.2 was imagewise exposed for 1 second at 2000 lux using a tungsten bulb, and then exposed on a hot plate heated to 125°C for 6 hrs.
Heated for 0 seconds. Next, each photosensitive material was layered with the above image-receiving material and passed through a 350 kg/cm'' pressure roller.

As a result, in the photosensitive materials of Examples 1 and 2, clear magenta transferred images with high S/N ratios were obtained on the image-receiving materials. Furthermore, when the pH change on the film surface of the photosensitive layer was measured before and after thermal development treatment, it was found that the pH value before development definitely increased after development.

The above results are shown in Table 1 below.

Table 1

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, and further containing a basic compound, wherein the basic compound is Solubility in water is 0.1
% or less of a guanidine derivative. 2. The photosensitive material according to claim 1, wherein the solubility of the guanidine derivative is 0.01% or less. 3. The photosensitive material according to claim 1, wherein the guanidine derivative has a pKa of 10 or more. 4. The photosensitive material according to claim 1, wherein the guanidine derivative has a pKa of 11 or more. 5. The photosensitive material according to claim 1, characterized in that the guanidine derivative is a compound represented by the following formula; ▲There are mathematical formulas, chemical formulas, tables, etc.▼ [In the above formula, R^2 is a monovalent group selected from the group consisting of an alkyl group having 6 or more carbon atoms, an aralkyl group, and a cycloalkyl group having 6 or more carbon atoms (each group has one or more substituents). R^3 and R^4 are monovalent groups selected from the group consisting of a hydrogen atom, an alkyl group, an aralkyl group, a cycloalkyl group, and an aryl group (each group may be substituted with one or more or R^3 and R^4 together with adjacent nitrogen atoms may have a heterocyclic group (
The heterocyclic group may have one or more substituents); and the total number of carbon atoms of R^1, R^2, R^3, and R^4 is 25 or more; be]. 6. The photosensitive material according to claim 1, wherein the guanidine derivative is contained in a photosensitive layer. 7. The photosensitive layer contains 0.01 to 4 of the above guanidine derivative.
The photosensitive material according to claim 6, characterized in that the content is in the range of 0% by weight. 8. The photosensitive material according to claim 1, wherein the guanidine derivative is contained in the photosensitive material in a state separated from the silver halide, reducing agent, and polymerizable compound contained in the photosensitive layer. material. 9. The photosensitive material according to claim 8, wherein the guanidine derivative is contained in the photosensitive layer in the form of microcapsules. 10. The photosensitive material according to claim 9, wherein the microcapsule containing the guanidine derivative has an outer shell made of a wall material having a melting point or softening point of 60°C to 200°C. 11. The photosensitive material according to claim 9, wherein the microcapsules containing the guanidine derivative have an outer shell made of a wall material made of wax. 12. The photosensitive material according to claim 9, wherein the microcapsule containing the guanidine derivative has an outer shell made of a wall material made of polyurea resin and/or polyurethane resin. 13. The photosensitive material according to claim 1, wherein the photosensitive layer further contains a color image forming substance. 14. Silver halide, a polymerizable compound, and the above-mentioned color image forming substance are exposed to light in a state accommodated in microcapsules (in the case of accommodating a guanidine derivative in a microcapsule, a microcapsule separate from the microcapsule containing the guanidine derivative). 14. The photosensitive material according to claim 13, wherein the photosensitive material is contained in a layer. 15. The photosensitive material according to claim 1, which is used for thermal development.