JPS6292939A - Heat developable photosensitive material - Google Patents

Abstract

PURPOSE:To form a cyan color image having no turbidity in the color phase as well as to activate heat development by using a specified coupler as a dye providing substance together with photosensitive silver halide and a reducing agent on a support. CONSTITUTION:This heat developable photosensitive material has a compound represented by the formula together with photosensitive silver halide and a reducing agent on the support. In the formula, R1 is an optionally substituted aliphatic, aromatic, heterocyclic, aromatic amino or heterocyclic amino group, R2 is H, acylamino or an optionally substituted aliphatic group, X is H, halogen, an aliphatic or aromatic group or acylamino, Z is H or a group eliminable by oxidation coupling with a developing agent, R2 and X may bond to each other to form a 5-7-membered ring, and a polymer coupler higher than a dimer may be formed through R1, R2, X or Z. The compound represented by the formula is a superior cyan dye providing compound and gives a fine cyan dye image by coupling with the oxidized product of a developing agent.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a heat-developable photosensitive material, and particularly to a heat-developable photosensitive material using a specific coupler as a dye-donating substance.

[Prior art technology] The photographic method using c[]silver genide has superior photographic properties such as sensitivity and gradation control compared to other photographic methods, such as electrophotography and diazo photography, so it has traditionally been the most popular method. It has been widely used. In recent years, a technology has been developed that allows images to be easily and quickly obtained by changing the image forming method for photosensitive materials using silver halide from the conventional wet processing using a developing solution to a dry processing using heating, etc. It has been.

Heat-developable photosensitive materials are well known in this technical field, and for information about heat-developable photosensitive materials and their processes, see, for example, Fundamentals of Photographic Engineering (1979, published by Kona Ri), p. 553 and 555, and Eizo Information 40, published in April 1978. Page, Nebresso, Photography Professional Photography Handbook No. 7
Edition (Ncbletts, tlandbook ofP
photography ancl reprograp
hy 7th Ed,) Van No5trand Reinhold Company (Van No5trand R
cinhold Company)'s 32-33i, US rEl Special), 1 No. 3.152,904 Wing, No. 3.301
, No. 678, No. 3, No. 392.020, No. 3.457
．． No. 075, British Patent No. 1.131,108, No. 1.
167, 777 and Research Disclosure magazine June 1978 issue, pages 9-15 (110-1702)
9>.

Also, various methods of obtaining color images by heating are described in, for example, Lissage Disclosure Magazine, May 1978 issue 54-58.
Page (Its-16966), April 1976 issue, pages 30-32 (RD-14433), U.S. Pat.
．． No. 474.867, No. 4,478,92γ, No. 4,
It has been proposed in Nos. 500,626 and 4,483,914. All of these produce or release dyes by heating to form an image-like distribution of the dye, and are characterized by the ability to obtain an image-like distribution of the dye in a short period of time.

[Problems to be Solved by the Invention] An image forming method using a coupler that forms a dye through a coupling reaction with an oxidized developing agent as a dye-donating substance that generates or releases a dichroic dye. Although these methods have been known for a long time, they have problems in producing especially excellent cyan images, such as low heat development activity and cloudy hue.

Accordingly, one object of the present invention is to provide a heat-developable photosensitive material that has high heat-developable activity and is capable of obtaining a cyan dye image with a clear hue.

[Means for Solving the Problems] The object of the present invention is to provide a heat-developable photosensitive material characterized by having at least a photosensitive silver halide, a reducing agent, and a compound represented by the following general formula (I) on a support. achieved.

General formula <1) In the general formula (I>, R1 represents a substituted or unsubstituted aliphatic group, aromatic group, polycyclic group, aromatic amino group, or heterocyclic amino group, and R2 is a hydrogen atom. , represents an acylamino group, a substituted or unsubstituted aliphatic group; represents a possible group, where
R2 and X may together form a 5- to 7-membered ring,
1, 1, 1, or 2, X, or one group of Z may form a multi-hung body puller of two or more.

In general formula (T), R1 preferably has 1 to 3 carbon atoms.
6 aliphatic group, preferably an aromatic group having 6 to 36 carbon atoms (
(e.g., phenyl group, naphthyl group, etc.), polycyclic group (e.g., 3-pyridyl group, 2-furyl group, etc.), or
aromatic or heterocyclic amino groups (e.g. anilino group,
naphthylamino group, 2-benzothiazolyl group, 2-pyridylamino group, etc.), and these groups can further include an alkyl group, an aryl group, a compound 1" group, an alkoxy group (
For example, methoxy group, 2-methoxyethoxy group, etc.), aryloxy group (e.g., 2,4-di-tart-amylphenoxy group, 2-ryl]lophenoxy group, 4-cyanophenoxy group, etc.), alkenyloxy group (e.g.,
2-propenyloxy group, etc.), acyl group (e.g., aretyl group, benzoyl group, etc.), ester group (e.g.,
butoxycarbonyl group, phenoxycarbonyl group, acetoxy group, benzoyloxy group, butoxysulfonyl group, toluenesulfonyloxy group), amide group (e.g. acylamino group, ethylcarbamoylamide group, buboursulfamoyl group), sulfamide group groups (e.g. dipropylsulfamoylamino group), imide groups (e.g. succinimide group, hydantoinyl 23
i,), etc.), ureido groups (e.g. phenylureido group, dimethylureido group, etc.), aliphatic or aromatic sulfonyl groups (e.g. methanesulfonyl group, phenylsulfonyl group, etc.), aromatic thio group for aliphatic groups. (for example, Ebludio v17T nilbuo u, etc.), a hydroxy group, a cyano group, a carboxy group, a nido [co group, a sulfo group, a halogen atom, etc.].

In this specification, the term "aliphatic group" may be linear, branched, or cyclic, and includes saturated and unsaturated groups such as alkyl, alkenyl, and alkynyl groups. To name a few, methyl, butyl, butyl, dodecyl, octadecyl, icolenyl,
1so-propyl group, tert-butyl group, tcrt-
(eg, octyl group, tcrt-dodecyl group, cyclohexyl group, cyclopentyl group, allyl group, vinyl group, 2-hesadehynyl group, propane group, etc.).

In general formula (I), R2 is a hydrogen atom, preferably an acylamino group having 1 to 36 carbon atoms (e.g., areplumino, bubrilylamino, de1-sidecanoylamino, benzoylamino group, etc.), preferably an acylamino group having carbon atoms of 2 or more. represents an aliphatic group having 1 to 20 carbon atoms, and these groups may be substituted with a substituent allowed in R1. butoxy, benzyloxy 13, etc.), aryloxy groups (e.g., phenoxy!3, 4-chlorophenoxy group, 4-sialaf 1noxy group, /+ -tart
-amyl) 1noxy group, etc.), alkylthio group (e.g., methylthio group, do-γ-syldio group, etc.), aryloxyldio group, 4-dodecylphenyldio group (M<K, etc.), alkyl or arylsulfonyl group (e.g., methanesulfonyl L1, phenylsulfonyl group, 4-chlorophenylsulfonyl group, etc.), acylamino group (e.g.
Preferred are aceplumino group, benzoylamino group, etc.), imide group (eg, succinimide, phthalimide group, hydantoinyl group, etc.), ureido group (eg, phenylureido group, methylureido group, etc.), and cyan group.

In the general formula (1),
represents a group group or an acylamino group, and these groups are R
It may be substituted with the substituent allowed in 1.

In general formula (I), R2 and X may both form a 5- to 7-membered ring, in which case R2 is preferably an acylamino group to form a nitrogen-containing heterocycle.

In the general formula (I), d3 and Z represent a hydrogen atom or a coupling super-degrouping, and examples thereof include a halogen atom (
(e.g., fluorine atom, chlorine atom, bromine atom, etc.)
Methoxyethylnoylbamoylmethoxy group, carboxypropyloxy group, methylsulfonylethoxy group, etc.>
, aryloxy 1
A is a toxyl group, a tetrazocaryleoxy group, a benzoyl quaternary group, etc.), a sulfonyloxy group (e.g., a methanesulfonyloxy group, a 1-luenesulfonyloxy group, etc.), an amide group (e.g., a dichloroacedelamino group). ,
heptafluorobutyrylamino 7j, methanesulfonylamino 1g, 1-luenesulfonylamino group, etc.), alkoxycarbonyloxy (e.g., ethoxycarbonyloxy group, penzyloxycarbonyloxy group, etc.)
, aryloxycarbonyloxycarbonyloxy group, etc.), aliphatic or aromatic thio group (e.g., ethylthio group, phenylthio group, tetrazolylthio group, etc.), imide group (e.g., succinimide group, hydanyl-ynyl group, etc.), aromatic group. These leaving groups may include photographically useful groups.

General formula (I) is preferably a cyan coupler represented by general formula (I[) and general formula (I[[).

General formula (n) General formula (II[) In general formula (II) and general formula (I[I), X and Z
is as defined in general formula (1).

In the general formula (ff) and the general formula (II[), R3
, R4 and R5 each represent an optionally substituted aliphatic group having 1 to 3 G carbon atoms or an optionally substituted aromatic group having 6 to 36 carbon atoms, and in general formula (III), R6 is a hydrogen atom. In 1ff having 1 to 20 carbon atoms (represents an aliphatic group that may be imitated, general formula (ff) and general formula <Ill), X and 1 (4 and X and R6 form 5 to 70 rings, respectively) You can leave it there.

Preferred positions of these groups IIJ! Examples of I include the substituents allowed for R1.

In general formula (n), preferable R3 is a substituted alkyl group, a substituted or (unsubstituted aryl group, arylamino W, is ring amino group, and the substituent of the alkyl group may be substituted) The aryl group is particularly preferably a phenyl group substituted with at least one halogen atom, an alkyl group, a sulfonamide group, or an acylamino group. , a sulfamoyl group, a carbamoyl group, or a halogen atom.

In general formula (II), preferred R4 is a substituted alkyl group or substituted aryl group, and as a substituent for the argyl group, an optionally substituted fluoride group is particularly preferred.

In general formula (II), preferred X is a hydrogen atom, an alkyl group, an alkenyl group, an aralkyl group, or an acylamino group.

In the general formula (II), it is preferable that X and R4 form a 5- to 7-membered ring, and it is particularly preferable to form a 5- and 6-membered ring.

In general formula (II), Z is preferably a hydrogen atom or a halogen atom, with a chlorine atom being particularly preferred.

In general formula (I), preferred R5 is an optionally substituted alkyl group or substituted aryl group,
Particularly preferred are substituted and unsubstituted alkyl groups.

In general formula (IV), preferred R5 is an optionally substituted alkyl group 33 bL/ < is a substituted aryl group, and substituted and unsubstituted alkyl groups are particularly preferred.

In general formula (III), R5 preferably has 1 to 1 carbon atoms.
15 alkyl groups, and methyl and ethyl groups are particularly preferred.

In general formula (I[I), x is preferably a halogen atom.

In the general formula (Ill), Z is preferably a halogen atom in J3.

In general formula (III), when R6 is a hydrogen atom, x is preferably an acylamino group.

The cyan coupler represented by the general formula (I) can be used alone or in combination with other known couplers (not limited to cyan). Also, the cyan coupler represented by the general formula (It) and The couplers of the general formula ([[) can be used singly or in combination.The mixing ratio of these can be effectively used within a wide range of 5 to 95%.

Specific examples of the cyan coupler represented by the general formula (T) are listed below, but the invention is not limited thereto.

In the following, (1) C5H11 is -C(CH3)20H2CH3 (℃) C8H11 is -
C (CII) CII C<CII3>2CH
3 respectively.

(t) C5H11 0CH3 (C-21) (C-22) (C-23) (C-24) (C-25) (C-26) (C-27) (C-28) (C-31) , 1(C-35) (C-38) (C-4,9) (t) C5H7 (t) C8H17 (tl C51-1,1 OOH The coupler of the present invention represented by the general formula (D) is 1 x 10-3 mol per mol of silver halide present in one layer ~
1 mole, preferably 5 x 10-2 moles - 5x to
- Add 1 cup per i mole. Moreover, two or more types of couplers of the present invention can be added to the same layer.

The cyan coupler of the present invention and the combination coupler described below are:
It can be introduced into the photosensitive material r1 by various known dispersion methods, and typical examples include solid dispersion method, alkali dispersion method, preferably latex dispersion method, and more preferably oil-in-water dispersion method.

In the oil-in-water dispersion method, after dissolving either a high-boiling organic solvent with a boiling point of 175°C or higher and a so-called auxiliary solvent with a low boiling point, either alone or in a mixture of both, water or gelatin is dissolved in the presence of a surfactant. Finely dispersed in aqueous media such as aqueous solutions. Examples of high boiling point organic solvents are U.S. Pat.
Representative examples are described in subsequent sections, including No. 027. Dispersion may be accompanied by phase inversion, and if necessary, the auxiliary solvent may be removed or reduced by distillation, noodle washing, ultrafiltration, or the like before use for coating.

Specific examples of high-boiling point 8 solvents include phthalic acid esters (e.g., dibutyl phthalate, di-3゜7-dimethylocbulphthalate-1-, dicyclohexyl phthalate,
di-2-ethylhexyl phthalate, didodecyl phthalate, etc.), phosphoric acid or phosphonic acid esters (triphenyl phosphate, tricresyl phosphate, etc.),
- edylhexyldiphenyl sulfuric acid 1-11-dicyclohexyl phosphate, l-2-ethylhexyl phosphate, tridodecyl phosphate, trib]
-xydiylbosnoate, trichloropropyl phosphate-1~, di-2-ethylhexylphenylphosphonate, etc.), benzoic acid esters (2-■ diylhexyl benzoate 1~, dodecyl benzene-1~, 2) -ethylhexyl-p-hydroxybenzoate, etc.), amides (diezildodecanamide, N-teto-rabcylpyrrolidone, etc.), alcohols or phenols (isostearyl alcohol, 2,4-di-tcrt-amylphenol, etc.) , aliphatic carboxylic acid esters such as dioctyl azelate, glycerol tribudylate, isostearyl lactate, trioctyl citrate 1, etc.)
, anilines (N,N-dibutyl-2-71hexy~5
- tert-octylaniline, etc.), hydrocarbons (
paraffin, dodecylbenzene, diisopropylnaphthalene, etc.), and as an auxiliary solvent, an aRFg agent with a boiling point of about 30° to about 160°C can be used, typical examples being ethyl acetate, butyl acetate, edyl propionate, etc. , methyl edyl ketone, cyclohexone, 2-ethoxyethyl acetate, dimethylformamide, and the like.

Processes, effects, and latex shells for impregnation of latex dispersion methods (examples A include U.S. Pat.
41,230, etc.

Furthermore, in the case of a compound that is substantially insoluble in water, in addition to the above method, it can be dispersed in fine particles in a binder according to the method of JP-A-59-174830.

In addition to the coupler of the present invention, conventional color couplers can be used in combination with the color photosensitive material of the present invention.

Specific examples of cyan, magenta and yellow couplers that can be used in the present invention
5earch Disclosure, abbreviated as RD)
17643 (December 1978)■-ri section, 187
No. 17 (November 1979).

These couplers are preferably ballast-based or polymerized and diffusion resistant. It is preferable that the coupling position is substituted by a till leaving group rather than a hydrogen atom. Couplers in which the color-forming dye is suitable (2), non-color-forming couplers, or couplers which release a development inhibitor or accelerator upon the coupling reaction can also be used.

Suitable couplers are disclosed in JP-A-58-123533 and JP-A-58-123533.
No. 8-149046, No. 58-149047, No. 9
-124339, 59-174835, 59-
No. 231539, No. 59-231540, GO-2
No. 950, No. 60-2951, No. 60-12548, No. 60-14242, No. 60-23474, No. 6
This is a compound described in No. 0-66249.

Silver halides that can be used in the present invention include silver chloride, silver bromide,
It may be silver iodide, silver chlorobromide, silver chloroiodide, silver iodobromide, or silver chloroiodobromide. Specifically, the patent application No. 59-2
No. 2855, pages 35 to 3G, US Special Edition 4.50
0.626 No. 50, Research Ice Clothes +7
Any of the silver halide emulsions described in the magazine June 1978, pages 9 and 10 can be used.

Although the silver halide emulsion may be used unripe, it is usually used after being chemically sensitized. For conventional photosensitive emulsions, known sulfur sensitization methods, reduction sensitization methods, gt gold metal sensitization methods, etc. can be used alone or in combination. These chemical sensitizations can also be performed in the presence of nitrogen-containing heterocyclic compounds (
Japanese Patent Publication No. 58-12G52f3, 58-215644
issue).

The C[]genide emulsion used in the present invention may be of the surface latent image type in which the C latent image is formed on the surface of the grains or the internal latent image type in which the C latent image is formed inside the grains. Good too. Direct reversal emulsions combining internal latent image type emulsions and nucleating agents can also be used.

The photosensitive silver halide coating used in the present invention has a silver conversion stoppage of Q to 10 cm/m2.

In the present invention, an organic metal salt that is relatively stable to light can be used in combination with the photosensitive silver halide as an oxidizing agent. In this case, it is necessary to be in contact with or at a close distance to the photosensitive silver halide metal salt.

Such organic metal salts are effective when developing a photothermographic material by heating it to a temperature of 50° C. or higher, preferably 60° C. or higher. Among these organic metal salts, organic silver salts are particularly preferably used.

The 44 compounds that can be used to form the above-mentioned organic silver salt oxidizing agent include Japanese Patent Application No. 59-22855, page 37.
Page 39, U.S. Pat. No. 4.500.626, No. 5211 II
There are compounds described in columns I to 53, etc. Also, the special request
Also useful are silver salts of carboxylic acids having an alkynyl group, such as silver phenylpropiolate described in No. 8-221535.

The above organic silver salts are o per mole of photosensitive silver halide.
, oi <i to 10 mol, preferably 0.01 to 1 U. The total coating amount of photosensitive silver halide and organic silver salt is 50m or less when converted to silver.
0!7/m2 is appropriate.

The silver halide used in the present invention may be spectrally sensitized by medium color A or others. The pigments used include cyanine pigments, merocyanine pigments, composite cyanine pigments, composite merocyanine pigments, holopolar cyanine pigments,
Included are hemin cyanine dyes, sudyryl dyes and hemioxonol dyes.

Specifically, JP-A-59-180550 and JP-A No. 60-1
No. 4,0335, Research Disclosure 1 Fu Magazine,
June 1978 issue, pages 12-13 (ItD 17029)
Examples include the sensitizing dyes described in et al., and the heat-decolorizable sensitizing dyes described in JP-A-60-111239 and the like.

These sensitizing dyes may be used alone or in combination, and combinations of sensitizing dyes are often used particularly for the purpose of supersensitization.

Along with the sensitizing dye, it is a dye that itself does not have a spectral sensitizing effect or a substance that does not substantially absorb visible light,
A substance exhibiting supersensitization may be included in the 1L preparation (for example, US$43'f 2.933.390 tan, US$3.63
No. 5,721, No. 3,743,510, No. 3.615
．． No. 613, No. 3.615.641, No. 3.617.
No. 295, those described in No. 3.635.721, etc.).

The old method of adding these sensitizing dyes to the emulsion can be done before or after chemical ripening, or as described in US Pat. No. 4.183.
No. 756 and No. 4,225.6GG may be used before or after nucleation of silver halide grains.

The amount added is generally about 10-8 to 10-2 mol per mol of silver halide.

As the reducing agent used in the present invention, a color developer that forms an image by oxidative coupling is useful. As a reducing agent used in heat-developable color tourist materials, N is described in US Pat. No. 3,531,286.

A p-phenylene color developer represented by N-diethyl-3-medylene diamine is described. Further useful reducing agents include U.S. Pat.
1.270 describes amine phenols. Among the amine phenol reducing agents, 4-
Amino-2,6-dichloro[cotenol, 4-amino-
2,6-dibromophenol, 4-amino-2-methylphenol 1-nalphate, 4-amino-3-methylphenol sulfate-1-, 4-amino-2,6-dic[
Examples include l-rophenol hydrochloride. Furthermore, Research Disclosure Magazine No. 151 1.5108,
U.S. Pat.
No. 116740 describes l)-(N,N-dialkylaminophenyl)sulfamine and the like, which are useful. In addition to the phenolic reducing agents mentioned above, naphthol reducing agents such as 4-amino-naphthol derivatives and 4
-Substituted sulfonamide naphthol derivatives are also useful.

In addition, common coloring agents that can be applied include:
The aminohydroxypyrazole derivatives described in U.S. Pat. No. 2,895.825 are disclosed in U.S. Pat.
The aminopyrazoline derivatives described in No. 4 are also published in Research Disclosure Magazine June 1980 No. 227-230,
236-240 pages (1tD-19412, RD-1
9415) describes hydrazone derivatives.

These reducing agents may be used alone or in combination of two or more.

Among the above, when a p-phenylene color developing agent is used, the magenta coupler of the present invention has a mavinta dye that does not have excessive absorption of blue light and red light compared to conventional 5-pyrazolone couplers. It has the ability to form, which is advantageous.

In addition to the above-mentioned reducing agents, the following reducing agents can also be used as auxiliary developers.

Useful auxiliary developers include hydroquinone, alkyl-substituted hydroquinones up to terjalibdelhydroquinone and 2,5-dimethylhydroquinone, catechols, pyrogallols, halogen-substituted hydroquinones such as chlorohydroquinone and dichlorohydroquinone, and methoxyhydroquinone. There are alkoxy-purchased hydroquinones and polyhydroxybengylene derivatives such as methylhydroxypphthalene. Furthermore, methyl gallate, ascorbic acid, ascorbic acid derivatives, N.

Hydroxylamines such as N'-di(2-ethoxyethyl)hydroxylamine, pyrazolidones such as 1-phenyl-3-pyrazolidone and 4-methyl-4-hydroxymedyl-1-phenyl-3-pyrazolidone, and Redac! -ones and hydroxytetronic acids are useful.

The reducing agent can be used in a certain concentration range. Generally useful reducing agent concentrations range from about 0.1 mole to about 4 moles of reducing agent per mole of oxidizing agent.

The useful ci of the reducing agent used in the present invention is generally from about 0.1 mole to about 20 moles of reducing agent per mole of silver.

In the present invention, an image formation accelerator can be used in the light-sensitive material. Image formation accelerators include accelerating redox reactions between silver salt oxidizing agents and reducing agents, accelerating reactions such as generation of dyes from dye-donating substances, decomposition of dyes, and release of diffusible dyes, and photosensitive material layers. There are other aspects such as promotion of dye transfer from the dye fixation layer to the dye fixing layer. They are classified as activators, compounds that interact with silver or silver ions, etc. However, these substance groups generally have multiple functions and usually have some of the above-mentioned promoting effects. For details of these, see Japanese Patent Application No. 59-213978, 67-71.
It is written on the page.

In addition to the image formation promoter mentioned above, there are various methods of generating bases, and any of the compounds used in these methods are useful as jn-forming precursors. For example, Tokugan Sho GO-
A method of generating a base by mixing a sparingly soluble metal compound and a compound (referred to as a complex-forming compound) that undergoes a complex-forming reaction with the metal ion constituting the sparingly soluble metal compound described in No. 169585. Patent application 1986-74702
There is a method of generating a base by electrolysis, which is described in the above issue.

The former method is particularly effective. Examples of poorly soluble metal compounds include carbonates, hydroxides, and oxides of zinc, aluminum, calcium, barium, and the like. Regarding complex-forming compounds, for example, N.E.
R.M. Smith (8 [, Hartell, R.
Co-authored by H. Sm1th), [Critical Stability Constances]
ity Con5tants) J, Volumes 4 and 5, Plenum Press. Specifically, aminocarboxylic acids, imidinoacetic acids, pyridylcarboxylic acids, aminophosphoric acids, carboxylic acids (mono, di, tri, tetracarboxylic acids J3
and further phosphono, hydroxy, oxo, ester, amide, alkoxy, mercapto, alkylthio,
Examples include compounds having a substituent such as phosphino), salts with alkali metals such as hydroxamic acids, polyacrylates, and polyphosphoric acids, guanidines, amidines, or quaternary ammonium salts.

It is advantageous to add the poorly soluble metal compound and the complex-forming compound to the light-sensitive material and the dye-fixing material separately.

In the present invention, various development stoppers can be used in order to always obtain a constant image despite fluctuations in processing temperature and processing time during development.

The development stopper referred to here means "immediately after proper development"n
This is a compound that neutralizes the group or reacts with a base to reduce the amount of base in the film and stops development, or a compound that inhibits development by interacting with silver and silver salts.

Specifically, acid breaker 1 releases acid upon heating.
Examples include electrophilic compounds, nitrogen-containing heterocyclic compounds, mercapto compounds, and their precursors that do not undergo a substitution reaction with a coexisting base when heated (for example, Japanese Patent Application No. 5L-21
No. 6928, No. 59-48305, No. 59-8583
No. 4 or compounds described in No. 59-85836, etc.)
.

Compounds that release Rimelkab 1 compounds when heated are also useful, for example, Japanese Patent Application No. 59-190173, Ibid.
No. 19-26892Ci, No. 59-24 (No. i468,
No. 60-26038, No. 60-22602, No. 60
-2603'l1, 60-2466ri1, 6L
There is a compound described in -29892 Shira, No. 59-17C1350.

Further, in the present invention, a compound that activates filling and stretching and simultaneously stabilizes the image can be used in the light-sensitive material. For specific compounds preferably used, see US Patent No. 4.
No. 500.626, columns 51-52.

Various antifoggants can be used in the present invention. As anti-fogging agents, azoles, JP-A-5
Nitrogen-containing carboxylic acids and phosphoric acids described in No. 9-168842, or mercapto compounds and metal salts thereof described in JP-A No. 111.636 [October 1, 1985]
Patent issued on the 4th! '1(B) (patent applicant: Fuji Photo Film Co., Ltd.)] are used.

In the present invention, the photosensitive material may contain an image toning agent if necessary. Specific examples of effective toning agents include compounds described in Japanese Patent Application No. 59-268926, pages 92-93.

The photosensitive material binder of the present invention can be used alone or in combination. A hydrophilic binder can be used for this binder. Typical hydrophilic binders are transparent or translucent hydrophilic binders, such as gelatin, proteins such as gelatin derivatives, cellulose derivatives, and natural substances such as starch, polysaccharides such as gum arabic, polyvinylpyrrolidone, Includes synthetic polymeric materials such as water-soluble polyvinyl compounds such as acrylamide polymers. Other synthetic polymeric materials include dispersed vinyl compounds that are used in latex form to add dimensional stability to photographic materials.

In the present invention, the binder is applied in an amount of 20 g or less per m2, preferably 10 U or less, more preferably 77 U or less.

The ratio of the high boiling point organic solvent dispersed in the binder together with any hydrophobic compound of the dye-providing substance 41 and the binder is 1 cc or less of solvent per 1 g of binder, preferably 0.
．． A suitable amount is 5 cc or less, more preferably 0.3 cc or less.

The photographic light-sensitive material J5 and the dye fixing material of the present invention may contain an inorganic or organic hardening agent in the photographic emulsion layer or other binder layer.

Specific examples of hardening agents can be found in Japanese Patent Application No. 59-268926, pages 94 to 95' +) 1111-1576.
Examples include those described in No. 36, page (3B), and these can be used in China or Germany or in combination.

The support used for the photosensitive material r1 and the optionally used dye fixing material in the present invention is one that can withstand processing temperatures. As a general support,
Not only glass, paper, polymer film, metal J3 and its analogues are used, but also patent application No. 59-268926
The supports listed on pages 95 to 96 of the specification can be used.

When the light-sensitive material used in the present invention contains a colored dye-donating substance, it is necessary to further contain an irradiation-preventing substance, an anti-halation substance, or various dyes. However, Japanese Patent Application No. 59-2G8926 pages 97-98 and U.S. Patent No. 4 and 5
Filter dyes, absorbent substances, etc. described in the literature exemplified in column 55 (lines 41 to 52) of No. 00,626 can be contained.

In order to cover a wide range of colors on the chromaticity diagram using the three primary colors yellow, magenta and cyan, the light-sensitive element used in the present invention comprises at least three layers of silver halide, each sensitive to a different spectral region. It is necessary to have a 2L agent layer.

A typical combination of at least three photosensitive silver halide 1L agent layers sensitive to different spectral regions is described in JP-A-II-5-180550.

The photosensitive material used in the present invention may have two or more emulsion layers sensitive to the same spectral region depending on the sensitivity of the emulsion, if necessary.

The photosensitive material used in the present invention may optionally contain various additives known as heat-developable photosensitive materials, layers other than the photosensitive layer, such as an antistatic layer, a conductive layer, a protective layer, an intermediate layer, A
It can contain a layer, a release layer, a matte layer, etc. For various additives, Linage Dixloger Magazine 1
June 978 issue, pages 9@-15 (RD 17029
), additives described in Japanese Patent Application No. 59-209563, etc., such as plasticizers, sharpness improving dye R1, Al-
Additives include dyes, sensitizing dyes, matting agents, surfactants, optical brighteners, ultraviolet absorbers, anti-slip agents, antioxidants, and anti-fading agents.

In particular, the protective layer usually contains an organic or inorganic matting agent to prevent adhesion. Further, this protective layer may contain a mordant and a U2 absorber. Each of the protective layer and the intermediate layer may be composed of two or more layers.

In addition, the intermediate layer contains a reducing agent to prevent color fading and color mixing.
A white pigment such as an absorbent or TiO2 may also be included. White pigments can be added not only to the intermediate layer but also to the emulsion layer to improve sensitivity.

The photographic boron of the present invention is composed of a photosensitive element that forms or stores a dye by heat development and, if necessary, a dye fixing element that fixes the dye.

In particular, in systems that form images by diffusion transfer of dyes, a light-sensitive element and a dye-fixing element are essential.In a typical form, the light-sensitive element and the dye-fixing element are separately mounted on two supports. It is broadly divided into two types: one in which it is coated on the same support, and one in which it is coated on the same support.

Relationship between dye element and dye fixation water absorption, relationship with support,
Regarding the relationship with the white reflective layer, the relationship described in pages 58 to 5 of Japanese Patent Application No. 59-268926 and No. 571'lI of US Pat.

In a typical configuration in which a photosensitive element and a dye fixing element are coated on the same support, the photosensitive element is peeled off from the dye fixing element after the transfer image is formed. ! This is the best form of illumination. In this case, a photosensitive layer, a dye fixing layer and a white film are formed on a transparent or opaque support. 1J layer are stacked.

In a preferred embodiment, for example, transparent support/photosensitive layer/
White reversible layer/dye fixing layer, transparent support/11! Examples include lithium fixed layer/white reflective layer/photosensitive layer.

Another typical embodiment in which a photosensitive element and a dye fixing element are coated on the same support includes, for example, Japanese Patent Application Laid-Open No. 56-67840.
Canadian Patent No. 674,082, U.S. Patent No. 3.7
As described in No. 30.718, there is a form in which part or all of the photosensitive layer is peeled off from the dye fixing element.
Examples include those in which a peel-off layer is applied at an appropriate position.

The photosensitive element or dye-fixing element may be in the form of an electrically conductive heating element layer, such as a heating phenomenon or heating means for diffusion transfer of the dye.

The transparent or opaque heating element in this case can be made using conventionally known techniques for producing resistive heating elements.

As a one-bar anti-heating element, there are two methods: a method of using a thin film of an inorganic material that does not exhibit semiconductivity, and a method of using a thin film of an organic material in which conductive fine particles are dispersed in a binder.

Materials that can be used in these methods are disclosed in Japanese Patent Application No. 59-151.
The one described in the specification of No. 815 et al. can be used.

The dye fixing element used in the present invention has at least one layer containing a mordant, and when the dye fixing layer is located on the surface, a protective layer can be further provided as necessary.

The layer structure of the dye fixing element, the location of the binder, additives, mordant addition layer, etc. are described in the specification of Toku-M Sho 5L-268926, page 62, line 9 to page 63, line 18, and the patent publication cited therein. ■What is described in Book 1 can also be applied to this application.

In addition to the above-mentioned layers, the dye fixing element used in the present invention may be provided with auxiliary layers such as a release layer, a pine 1-agent layer, and an anti-curl layer, if necessary.

One or more of the above layers include a base and/or salt base precursor for dye migration (W advance), a hydrophilic heat solvent, an anti-fading agent to prevent dye fading, and a U absorption Antioxidants, dispersed vinyl compounds to avoid increasing dimensional stability, whitening agents, etc. may also be included.

Specific examples of these additives are described in Japanese Patent Application No. 59-209563, pages 101 to 120.

The binder in the above layer is preferably hydrophilic, and transparent or translucent hydrophilic colloids are typical. As a specific example, the binders mentioned above for the photosensitive materials are used.

The image receiving layer in the present invention includes a dye fixing layer used in thermal color photosensitive materials, and can be arbitrarily selected from commonly used mordants, but polymer mordants are particularly preferred. Here, the polymer mordant includes a polymer having a poly7-1 nitrogen-containing heterocyclic moiety containing a trivalent amino group, and a polymer containing these quaternary cation groups.

Regarding this specific example, patent application No. 59-26892 June 98
~Page 100 and No. 57 of U.S. Patent No. 4,500,62G~
It is stated in column 60.

In the present invention, a heat-developable photosensitive layer, a protective layer, an intermediate 131,
The coating method for the undercoat layer, back layer and other layers is described in US [Q Patent 4.
The method described in columns 55 to 56 of No. 500.626 is applicable.

Radiation including visible light can be used as a light source for double-edge exposure for recording an image on a heat-developable photosensitive material.
For example, the light source described in Japanese Patent Application No. 59-268926, page 100 and U.S. Pat. No. 4,500,626, column 56 can be used.

The heating temperature in the heat development process is approximately 50℃/approximately 250'
It is possible to develop the temperature at a temperature of about 0°C to about 180°C, but the heating temperature in the transfer step is about 50°C to about 180°C.
More preferably, the temperature is at least 10°C and about 10°C lower than the humidity in the heat development step. As a heating means for the development/transfer process, a heating plate, an iron, a heating roller, a heating element using carbon, butan white, etc. can be used.

Also, JP-A-1 (No. 59-218443, Patent Application 1986-7)
As detailed in No. 9709, etc., a method in which development and transfer are performed simultaneously or continuously by heating in the presence of a small amount of a solvent such as water is also useful. In this method, the flea image formation accelerator may be included in advance in either or both of the dye-fixing material and the photosensitive material, or may be supplied from the outside.

In the method in which the above-mentioned development and transfer are carried out simultaneously or continuously, the heating temperature is preferably 50° C. or higher and below the boiling point of the solvent. For example, when the solvent is water, it is preferably 50° C. or higher and 100° C. or lower.

Further, a solvent may be used to transfer the mobile dye to the dye fixed layer.

Examples of the solvent used for accelerating development and/or transferring the mobile dye to the dye fixing layer include water or an aqueous solution of an Ip group containing an alkali metal salt or an organic 1n group. 2; As t, those described in the section of the image formation accelerator can be used. Further, a low boiling point solvent or a mixed solution with a low boiling point solvent or a basic aqueous solution can also be used. Further, a surfactant, an antifoggant, a complex-forming compound with a sparingly soluble metal salt, etc. may be included in the solvent.

These solvents can be used in dye-fixing materials, photosensitive materials, and in methods for applying them to both. The amount used can be as small as less than the weight of the solvent corresponding to the maximum swelling volume of the gold-coated fli film (especially less than the weight of the solvent corresponding to the maximum swelling volume of the entire coating film minus the revision of the entire coating film). .

A solvent (for example, water) is applied between the photosensitive layer of the heat-developable photosensitive material and the dye fixing layer of the dye fixing material to promote image formation and/or movement of the dye. Alternatively, it can be used by incorporating it into the dye fixing material or both.

As a method for applying a solvent to the photosensitive layer or the dye fixing layer, there is, for example, the method described in Japanese Patent Application No. 5L-268926, page 101, line 9 to page 102, line 4.

Furthermore, in order to promote dye transfer, a method may be adopted in which a hydrophilic thermal solvent, which is usually solid but dissolves at high temperatures, is incorporated into the light-sensitive material or dye fixing material. Hydrophilic thermal solvents are used for photosensitive materials and dye fixing materials! It may be built in either one or both. Further, the layer to be incorporated may be an emulsion layer, an intermediate layer, a protective layer, or a dye fixing layer, but it is preferable to avoid incorporating it in the dye fixing layer and/or a layer adjacent thereto.

Examples of hydrophilic thermal solvents include ureas, pyridines, amides, sulfonamides, imides, alnyls, oximes, and other heterocycles.

The heating means used in the transfer process () is described in Japanese Patent Application No. 11r (59-2).
There is a means described in G8926, page 102, line 14 to page 103, line 11. In addition, by applying a layer of conductive material such as graphite, carbon black, or metal to the fixed dye, this conductivity +! It is also possible to directly heat the layer by passing an electric current through it.

The pressure conditions and method of applying pressure when overlapping the heat-developable photosensitive material and the dye-fixing material and bringing them into close contact are described in Japanese Patent Application No. 59-2.
The method described on pages 103 to 104 of No. 68926 can be applied.

Example 1 This article describes how to make a silver iodobromide emulsion dispersed in macrohedrons.

Add 20 parts of gelatin and 1"0 (CHz) 2 S (C
H2> 2 8 (CH2) 2
An aqueous solution containing 69 g of potassium cum bromide and 2 g of potassium iodide (dissolved 15 g of OH and kept warm at 50°C) and an aqueous silver nitrate solution (1M silver 0.5 in water Good)
(dissolved 9 mol) of PAg using the double jet method.
It was added at a temperature of 8.0. After washing with water and removing the paper, 40 g of gelatin and 200 ml of water were added to adjust the pH, and sodium diosulfate was used to perform optimal chemical sensitization, and the average particle size was 0.
45μ hexahedral monodispersed emulsion (IX) 700!7
1q Iko.

Next, I will explain how to make a pigment-forming turnip sear.

10% aqueous solution of gelatin fl 1 (lJ7, 10d1 of a 5% aqueous solution of 1-lium dodecylbenzenesulfonate, 40,014 mol of the dye-forming coupler described below, 59 mol of trinonyl phosphate, 20 ml of ethyl acetate mixed, 7
1\Mojinai (I made an emulsified dispersion with a.

Next, we will discuss how to prepare the coating liquid.

a) Hexahedral monodisperse silver iodobromide emulsion 50gb)
10% pyrazine aqueous solution 153C) Is the following also 4'? 0.04% methanol solution of sensitizing dye S of i 5ηd) Dispersion of dye-forming coupler C-/I 32gC) 10% methanol solution of compound I Cρ of the following structure 15ai! f
) 5% aqueous solution of a compound with the following structure 15 g) water
168d" 2. After stirring and mixing, the mixture was coated on a paper support laminated with polyethylene to a wet film thickness of 30 μm and dried.

Structure of sensitizing dye S Furthermore, as a protective layer, 10% piratin aqueous solution 40OL3,
Wetting liquid 1' was a mixture of 1,600 mfl of water, 250 d of a 1% aqueous solution of 1,2-bis(vinylsulfonylace1-amido)ethane 4% aqueous solution'a20ae, and 1n of 1n helium succinic acid-2-ethylhexyl ester sulfonate. The film was coated to a thickness of 42μ7n and dried to produce a photosensitive material A-1.

Dye-forming couplers C-11, C-22, C-36, c-
Light-sensitive materials Δ-2 to Δ-5 were prepared by carrying out the same operations and treatments as described above except that Sample No. 52 was used.

The above-mentioned photosensitive materials A-1 to A-5 were exposed to light at 5000 lux for 1 second through a green filter whose density was continuously changed using a tan bulb. 10 ml of a 5% aqueous solution of guanidine carbonate was supplied to the emulsion surface of the exposed light-sensitive material using a wire bar, a polyethylene terephthalate film was placed on top of the film, and the material was heated at 90° C. for 20 seconds. As a result, a clear cyan negative image was obtained on the photosensitive material. The density of the cyan image was measured using a Macbeth reflectance meter (R[1-5
1], the following results were obtained.

Example 2 How to make benzotriazole silver emulsion 'y71S
Bell.

28g of gelatin and 13.2J of benzotriazole to 33g of water
Dissolved in 000rd. This solution was kept at 40°C and stirred for tT.
L.

Ta. A solution prepared by dissolving 177 silver nitrate in 100 ml of water was added to this solution over a period of 2 minutes.

The pH of the benzotriazole was adjusted and allowed to settle to remove excess salt. After that, if the pH is adjusted to 630, the f.
5400g of benzo-1-lyazole silver emulsion is 14.

A coating solution was prepared using the silver iodobromide emulsion of Example 1 and the dispersion of dye-forming coupler C-4.

a-1) Hexahedral monodisperse silver iodobromide emulsion 33ga-2)
Benzotriazole silver emulsion 337 b) to f) Same amount as b) to f) of Example 1 g) Water
152 Precepts a) and 9) were mixed, a photosensitive layer 4A was prepared in the same manner as in Example 1, and a cyan image was produced by the same processing. The maximum density at this time was 2.09 and the minimum density was 0.30, indicating that development was promoted by using benzotriazole silver.

Example 3 Right (describes how to make a dispersion of silver salt).

Geufun2J7 and 15.9g of 4-acetylaminophenylpropiol dissolved in 01% sodium hydroxide? ! ! 2
It was dissolved in 1000ml and 100ml of ethanol.

This solution was kept at 40°C and stirred.

A solution prepared by dissolving 4.53 g of silver nitrate in 200 d of water was added to this solution over 5 minutes.

The pH of the dispersion was adjusted and excess salt was removed by settling. After this, the pH was adjusted to 6.3 and a dispersion of 300 g of a ferrous silver salt was added to a pH of 14.

The same operations and treatments as in Example 2 were carried out, except that the above organic silver base 939 was used in place of the benzotriazole silver emulsion in Example 2, and the amount of water was reduced from 152n to 92d. As a result, the maximum moisture content was 2.14, and the minimum concentration was 0.35.
4, and it was found that the development was further accelerated than when the benzotriazole silver tL agent was used.

Example 4 A coating solution with the following composition was prepared.

a) Hexahedrally dispersed silver iodobromide emulsion of Example 1 (50 gb)
10% gelatin aqueous solution 109C) 0.04% methanol solution of sensitizing dye S of Example 1 5ml d) Dispersion of dye-forming coupler C-4 of Example 1 323e) Solution of compound of Example 1 e) 15ml 1f) IHI
JI (7) f) (7) 〃15dO) 20% aqueous dispersion solution of guanidine 4-methylsulfonyl-phenylsulfonylacetate 1odh) Water 1G3da) to h) were mixed and wet liquid thickness 60μTrL was applied on a polyethylene terephthalate film support. It was applied and then dried.

Furthermore, a protective layer is added on top of this and a 10% gelatin aqueous solution 400% is applied.
ml water, 1240d, amber I! 1% aqueous solution of l-2-edylhexyl ester sulfonic acid sodium salt 25
0m, 300me of a 20% aqueous dispersion solution of 4-methylsulfonyl-phenylsulfonylacetate guanidine was stirred and mixed, coated with a wet liquid thickness of 86 μm, and dried to form a number.

This photosensitive material uses a tungsten bulb and passes through a green filter whose density changes continuously to 5000
Exposure was made for 1 second at lux. 14 copies of this exposed
When heated for 25 seconds on a hot plate heated to 0°C, a clear cyan color image was obtained.

The transmission density of this color image is maximum density 2.03, minimum density 0
．． It was 38. Therefore, the sawbler of the present invention has sufficient image support forming ability even in a completely dry system without using water.
I can see that there is a C.

Example 5 A 20% aqueous dispersion solution of guanidine 4-acetylaminophenylbutycopiolate was used in place of g) in the coating solution of Example 4 and guanidine 4-mebu-ru-sulfonyl-phenylsulfonyl acetate in the protective layer. A photosensitive material was prepared in exactly the same manner as in Example 4, except that the same hanging method as in Example 4 was used. When the same treatment as in Example 4 was performed except that the heating time was 20 seconds, a clear negative image was obtained. The maximum density of this negative image was 2.15 and the minimum density was 0.33, indicating that development was accelerated compared to Example 4.

Example 6 Exactly the same operations and treatments were performed in Examples 4 and 5, except that the compound f) in the coating solution of Examples 4 and 5 was removed and the same amount of water was added instead. Maximum work 1 degree 0.6
Only a slight color image was obtained. Therefore, the heating time was increased, but the degree of fog only increased and a clear image could not be obtained. A similar attempt was made in Example 1, but there was no significant difference in the presence or absence of the compound f), and it was found that the development was unique to a system that does not use water during development.

Example 7 10% ethyl acetate of the compound in making the dispersion of the dye-forming coupler of Example 4 4.511+j! The same operations and treatments as in Example 4 were performed except for adding .

In the sample of Example 4, the increase in fog density was large as the heating time was increased, but it was found that the use of the above compound suppressed the increase in fog density.

Example 8 First, I will explain how to make silver chlorobromide.

Well-stirred geratin aqueous solution (water 1000..12
Inside is 20 piratin! An aqueous solution containing 56 g of potassium Q chloride and 7 g of helium chloride 600IIIi!
and silver nitrate aqueous solution <Ii! in 600ml of water! ! silver monate 0,
(59 mol dissolved) was added at the same time at an equal flow rate over 60 minutes. Wash with water, remove i2I! After adding 40 g of gelatin and 200 ml of water to adjust ρ11, add 1 mm of sodium thiosulfate and 4-hyperoxy-6-methyl-1,3,
zQX, a hexahedral monodisperse emulsion with an average grain size of 0.4μ, which performs optimal chemical sensitization using 3a,7-chitrazaindene <V
I) 7009 was obtained.

Except for using this monodispersed silver chlorobromide, the operation and treatment were exactly the same as in Example 4, and the maximum J' was 4 degrees 1.9.
9. It is known that a color image with a minimum aperture of 0.32 can be obtained and a clear image of 1'7 can be obtained even with a silver chlorobromide emulsion.

Example 9 Regarding how to make the emulsion for the first layer) Boberu.

A well-stirred gelatin aqueous solution (water 100 (containing 20 g of gelatin and 3 g of sodium chloride in water and moisturizing at 75°C), 600 rd aqueous solution containing sodium chloride and JJ1 noum bromide, and a silver nitrate aqueous solution (water) At the same time, add 0.5'l of silver nitrate to 600 ml.
Addition was made uniformly over a period of 0 minutes. In this way, a monodisperse cubic silver chlorobromide emulsion (
bromine (80 mol%) was adjusted.

After washing with water and desalting, 5 tyi of sodium thiosulfate and 20 tng of 4-hydroxy-6-methyl-1,3,3a,7-titrazaindene were added to perform chemical sensitization at 60°C.

The yield of emulsion was 600 mm.

Next, I will explain how to make the emulsion for the third layer.

A well-stirred aqueous gelatin solution (20 g of gelatin and 3 g of sodium chloride in 1 oooy of water, kept at 75°C), 600 ml of an aqueous solution containing sodium chloride and potassium bromide, and an aqueous silver nitrate solution (600 ml of water, 0 ml of silver nitrate) Dissolve .59 mol of the dye solution () and the following dye solution (
2) were simultaneously added at equal flow rates over a period of 40 minutes.

A monodispersed cubic silver chlorobromide emulsion (bromine 80 mol%) in which a dye with an average grain noise of 0.35 μm was adsorbed in this way.
was prepared.

After washing with water and salting, chemical sensitization was carried out at 60°C by adding 20 μl of 1-lium diosulfate and 20 μl of 4-hydroxy-6-methyl-1,3,3a,7-te. .tL
The yield of the agent was 6009.

Aqueous solution (1) of methanol 41]Om1 Next, we will describe how to prepare a silver halide emulsion for the fifth layer.

Add 1000 d of an aqueous solution containing potassium iodide and potassium bromide to a well-stirred aqueous gelatin solution (200 d of gelatin and ammonia dissolved in 1000 d of water and keep warm at 50°C) and an aqueous solution of silver l1r4 acid (1000 d of water). 1 mole of silver nitrate was added at the same time while keeping the pAg constant. In this way, a monodisperse silver iodobromide octahedral emulsion (iodine 5 mol %) with an average grain size of 05 μm was produced.
was prepared.

Wash with water, 1152 J! a ff2 Chloroauric acid (tetrahydrate) 5
Gold and sulfur sensitization was performed at 60° C. by adding 2η of sodium thiosulfate. The yield ω of the emulsion is 1. OK! ? Met.

This article describes how to make benzotriazole silver emulsion.

28g of gelatin and 13.2g of benzotriazole to 33g of water
It was dissolved in 00 Biao. This solution was kept at 40°C and stirred.

To this solution, add 2 parts of a solution of 177 parts of silver nitrate dissolved in 100 parts of water.
Added in minutes.

The pl+ of this benzotriazole silver emulsion was adjusted, precipitated, and excess salt was removed. After that, the pH was divided to 6.30, and 400 g of benzotriazole silver emulsion was mixed with 1
It's 0.

Next, we will discuss how to make a gelatin dispersion of couplers.

10g of the coupler listed below, mixed with surfactant, -
]Huccinic acid-2-■Thylhexyl ester sulfur. −
1 to the required amount (required ♀ in the composition table of multilayer structure) was weighed out, 30 ml of ethyl acetate was added, and the mixture was heated and dissolved at about 60° C. to form a uniform I≧solution. This solution and a 10% solution of lime-treated cyanide, ioog, were stirred and mixed, and then dispersed using a Hosogenizer R for 10 minutes at 10,000 rpm to prepare a coupler dispersion. The coupler used in this ■X had the following configuration.

(Cyan coupler) Coupler of Compound Example C-4 (Magenta coupler) 1 (Yellow coupler) B and G in which a tungsden light bulb is used as the above-mentioned multilayered color photosensitive material, and the density changes continuously.

Exposure was made for 1 second at 2000 lux through an R tricolor separation film.

A 5% aqueous solution of guanidine carbonate of 2 (7/77L2) was supplied to the emulsion surface of this exposed light-sensitive material using a Wire bar.
Singing polyethylene derephthalate film, 95℃
Heat for 20 seconds on a heated heat block. As a result, clear negative images of yellow, magenta, and cyan were obtained in the areas corresponding to the B, G, and R exposures, demonstrating that a multilayer full-color photosensitive material can be produced using the compound of the present invention.

1 “fuT Office '1-2j;ic;+7-+I]
K +11, '81if [indication 1 of 1wa 60 Q*iT Application No. 23386/I82,
Name of invention: Heat-developable photosensitive material 3, Person making the amendment: 4, Agent: 6, Number of inventions increased by J: 07, Supplement 1
1 Yo vs. ℃: Akira 9 @ Zan 8, Contents of amendment: As shown in the attached sheet. (Hb, the type of the statement has not been typed (no changes to the contents)).

Claims (1)

[Scope of Claims] A heat-developable photosensitive material comprising at least a photosensitive silver halide, a reducing agent, and a compound represented by the following general formula (I) on a support. ▲There are mathematical formulas, chemical formulas, tables, etc.▼General formula (I) In the general formula (I), R_1 is a substituted or unsubstituted aliphatic group, aromatic group, heterocyclic group, aromatic amino group, or heterocycle. Represents an amino group, R_2 is a hydrogen atom,
Represents an acylamino group, a substituted or unsubstituted aliphatic group,
X represents a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, or an acylamino group, and Z represents a hydrogen atom or a group that can be separated during oxidative coupling with a developing agent, where R_2 and X are both 5 to 7-membered ring, and one group among R_1, R_2, X, and Z may form a multimeric coupler of dimer or more.