JPH0232338A - Color photosensitive material - Google Patents

Abstract

PURPOSE:To improve a green preservable property, image density and color reproducibility by incorporating at least photosensitive silver halide, binder, reducible dye donative compd., and specific reducing agent onto a base. CONSTITUTION:At least the photosensitive silver halide, the binder, the reducible dye donative compd., and the reducing agent expressed by the formula I are incorporated onto the base. In the formula I, R<1>-R<6> denote a hydrogen atom, halogen atom, hydroxy group, respectively substd. or unsubstd. alkyl group, aryl group, acrylamino group, alkoxy group, etc. However, at least either of R<1> and R<2> and at least either of R<4> and R<6> denote a hydroxyl group; R<1> and R<2>, R<2> and R<3>, R<4> and R<5>, R<5> and R<6> may jointly form a carbon ring; x denotes a bivalent combination group; n denotes 1 or 0. The green preservable property, image density and color reproducibility are improved in this way.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a color photosensitive material, and in particular to a color photosensitive material that can provide a positive color image with high density and good color reproducibility, and has a long shelf life. This paper relates to excellent color photosensitive materials.

(Prior Art and its Problems) Many methods have been proposed for obtaining positive color images by diffusion transfer.

For example, US Pat. No. 4,559,290, US Pat. No. 4,356.2
No. 49, No. 4,358,525, JP-A-53-355
No. 33, No. 53-110827, No. 54-13092
No. 7, No. 56-164342, No. 59-154445
No. 1, Japanese Patent Application No. 61-88625, etc., an oxidized dye-donating compound without dye-releasing ability is made to coexist with a reducing agent or its precursor, and wet development or thermal development is carried out to adjust the exposure amount of silver halide. A method has been proposed in which the reducing agent is oxidized and the remaining unoxidized reducing agent is used to reduce the dye and release a diffusible dye. Also, European Patent Publication 220746
No. 87-6199 (vol. 12, no. 22),
N-
A heat-developable color photosensitive material is described that uses a non-diffusible compound that releases a diffusible dye upon reductive cleavage of an X bond (X represents an oxygen atom, nitrogen atom or sulfur atom).

However, when the above-mentioned reducible dye-providing compound is used in combination with a silver halide emulsion together with a reducing agent or its precursor, there are problems in that color images have high staining and storage stability is poor. I understand.

In order to suppress staining in a photothermographic material for positive image formation using such a reducible dye-donating compound, a diffusible electron transfer agent is used in addition to a diffusion-resistant electron donor as a reducing agent. However, the generated electron transfer agent radicals diffuse into other layers with different color sensitivities and cross-oxidize the electron donors there, causing a decrease in image density and worsening color reproduction. For this reason, attempts have been made to provide an intermediate layer between photosensitive layers having different color sensitivities, or to contain a reducing substance in this intermediate layer. Since there are restrictions on the amount of binder and the amount of reducing substance added to each layer in terms of image forming speed, resolution, film quality, etc., further improvements are desired.

(Objective of the Invention) The first object of the present invention is to improve the shelf life of a color light-sensitive material using a reducible dye-providing compound. The second purpose is to increase the image density of the cough light material and improve the color reproducibility.

(Structure of the Invention) The object of the present invention is achieved by a heat-developable color photosensitive material characterized by comprising at least a photosensitive silver halide, a binder, a reducible dye-providing compound and the following general formula on a support. It was done.

General formula (+) In the formula, R1 to R& are a hydrogen atom, a halogen atom, a hydroxy group, a substituted or unsubstituted alkyl group, an aryl group, an acylamino group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group. group, acyl group, sulfonyl group, carbamoyl group, or sulfamoyl group. However, at least one of R1 and R3 and at least one of R4 and R6 represent a hydroxy group, and R
1 and R2, R2 and Rco R4 and R5, R5 and R6 may jointly form a carbon ring, X represents a divalent linking group, and n represents 1 or O.

The present invention will be explained in further detail.

-i In the formula (I), at least one of R1 or R3 is a hydroxy group, and at least one of R4 or R6 is a hydroxy group. In the present invention, it is particularly preferable that R1 and R6 are hydroxy groups and R3 and R4 are other atoms or groups.

In general formula (I), RI and R6 are hydrogen atoms, halogen atoms (e.g. chlorine atom, bromine atom, fluorine atom),
Each substituted or unsubstituted alkyl group (having 1 to 1 carbon atoms)
60゜For example, methyl, ethyl, propyl, 1so-butyl, t-butyl, t-octyl, 1-ethylhexyl, nonyl, cyclohexyl, undecyl, pentadecyl, n-hexadecyl, 3-decanamidopropyl), aryl group (carbon number 6-60. For example, phenyl, p-1
-lyl, naphthyl), acylamino (2 to 60 carbon atoms)
゜For example, acetylamino, n-butanamide, octanoylamino, 2-hexyldecanamide, 2-(2'
4'-di-t-amylphenoxy)butanamide,
benzoylamino, nicotinamide), alkoxy group (
Carbon number 1-60. For example, methoxy, ethoxy, butoxy, n-octyloxy, hexadecyloxy, methoxyethoxy), aryloxy groups (with 6 to 60 carbon atoms, e.g.
Phenoxy, 2.5-t-amylphenoxy, 4-
octylphenoxy, naphthoxy), alkylthio group (
1 to 60 carbon atoms, e.g. methylthio, ethylthio, butylthio, hexadecylthio), arylthio groups (6 to 60 carbon atoms, e.g. phenylthio, 4-dodecyloxyphenylthio), acyl groups (1 to 60 carbon atoms, e.g. acetyloxy) , benzoyl, butanoyl, dodecanoyl), sulfonyl group (carbon number 1-60, e.g. methanesulfonyl, butanesulfonyl, tolylsulfonyl),
Carbamoyl group (1 to 60 carbon atoms, e.g. NN-dicyclohexylcarbamoyl) or sulfamoyl group (
Carbon number O~60. For example, N, N-dimethylsulfamoyl) and a dorokidi group as described above.

R1 and R2, R2 and R), R4 and R5, and R5 and R6 may jointly form a carbocyclic ring.

In the general formula (I), X is a divalent linking group, preferably +Y-)-r-Z +Y-)-r, and n is 1
Or represents O.

]I Y represents -N--C--〇--SO,- or a divalent group formed by combining two or more thereof, W represents a substituted or @substituted alkyl group or aryl group, Z represents a substituted or unsubstituted alkylene group or arylene group, and m represents 1 or O.

Substituents on Z and W include nitro groups, halogen atoms (same as those explained for R'-R'), substituted or unsubstituted alkyl groups, aryl groups, acylamino groups, alkoxy groups, aryloxy group, alkylthio group, arylthio group, acyl group, sulfonyl group, carbamoyl group or sulfamoyl group (these are Rl, R
6), each substituted or unsubstituted amino group (carbon number 0 to 60°, e.g. -NH,,N
.

N-diethylamino, N,N-dioctadecylamino)
, sulfonamide group (2 to 60 carbon atoms, e.g., hexadecanesulfonamide, dobyloxybenzenesulfonamide), acyloxy group (2 to 60 carbon atoms, e.g. (acetyloxy, benzoyloxy, lauroyloxy), alkoxycarbonyl group (2 to 60 carbon atoms), 60. For example, methoxycarbonyl, butoxycarbonyl), Roxycarbonyl group (carbon number 6 to 60°, e.g. phenoxycarbonyl), alkoxycarbonyloxy group (carbon number 1 to
60. For example, methoxycarbonyloxy), Roxycarbonyloxy group (7 to 60 carbon atoms, e.g. phenoxycarbonyloxy), alkoxysulfonyl group (1 to 60 carbon atoms, e.g. methoxysulfonyl,
ethoxysulfonyl), aryloxysulfonyl (
jf prime number 6-60. For example, phenoxysulfonyl)
, heterocycle (a 5- to 6-membered heterocycle, which may be fused with another ring, having 1 to 60 carbon atoms; for example, furyl, pyridyl, octadecylsuccinimide), carbamoylamino group (having 1 to 60 carbon atoms) For example, N'-dodecylcarbamoylamino), sulfamoylamino group (carbon number O
~60. For example, N. N'-dipropylsulfamoylamino), etc.

In general formula (I), the total number of carbon atoms of R1, R6 and X is preferably 10 or more, particularly 14 or more.

Among the compounds represented by formula (I), preferred are formula (II), (I[I), (IV), (V), (
Examples include compounds represented by Vl).

(II) (II[) R Rff (IV) (V) R1-R6 in formulas (I[) to (Vl) have the same meanings as above, and R7-R14 may be the same or different,
Hydrogen atoms, nitro groups, halogen atoms (same as those explained for R' to R6), substituted or unsubstituted alkyl groups, aryl groups, acylamino groups, alkoxy groups,
Aryloxy group, alkylthio group, arylthio group, acyl group, sulfonyl group, carbamoyl group or sulfamoyl group (these are the same as those explained for R1-R6)
, each substituted or unsubstituted amino group, sulfonamido group, acyloxy group, alkoxycarbonyl group, aryloxycarbonyl group, alkoxycarbonyloxy group, aryloxycarbonyloxy group, alkoxysulfonyl group, ryorioxysulfonyl group, hetero ring, carbamoylamino group or sulfamoylamino group (these are the same as those explained as substituents on Z or W)
represents.

R? and R1 may jointly form a 5- to 20-membered carbon ring.

More preferred among the compounds represented by (n) to (Vl) are the compounds represented by formulas (n), (III), and (TV).

Preferred substituents for R5 and R6 in formula (II) and (I[[) are a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a hydrogen atom, and the preferred substituents are Each of them is a substituted or unsubstituted alkyl group, acylamino group, sulfonamide group, carbamoyl group, sulfamoyl group, or alkoxy group, a nitro group, a halogen atom, and a hydrogen atom.

More preferred among the compounds represented by formulas (II), (I[l), and (IV) is the compound represented by formula (n).

Preferred substituents as R1 to R6 in formula (II) are a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted alkylthio group, and among these, a hydrogen atom , a halogen atom, a substituted or unsubstituted alkyl group, and one of R1 and R1 and R3
It is most preferred that either one of and R4 is a substituted or unsubstituted alkyl group and the other is a hydrogen atom.

Preferred substituents for Rff and Re in formula (■) are a hydrogen atom and a substituted or unsubstituted alkyl group (having 1 to 30 degrees of carbon atoms).

In the -IG formula (■), when R7 and R8 jointly form a carbocyclic ring, a 5- to 12-membered ring is preferred.

-a In formula (II), it is preferable that at least one of R7 and R8 is a substituted or unsubstituted alkyl group, one of which is a hydrogen atom and the other one is a substituted or unsubstituted alkyl group. More preferred is the case.

R1 in general formula (II). The total number of carbon atoms in R1 is 1
It is preferably 0 or more, and more preferably 14 or more.

Specific examples of compounds included in the general formula (I) of the present invention are listed below, but the present invention is not limited thereto.

leaf H H H C8゜ H3 H H H H H H H H H H H H H H H H H 0H H H H H H cpzcp.

H H C++Ht3(n) Ctll % C+oL+-n Q-CIzCHtOCHs H H n) H Cl1゜H H H H H C+Jts-n Cth Hz: +(n) CzHl C4H1(n) \/ (t)HqC4 CJ q( t) Next, a typical method for synthesizing the compound included in the general formula (I) of the present invention will be shown.

Synthesis Example 1 Synthesis of Exemplified Compound (5) [16.6 g of -butyl-hydroquinone and 13.8 g of l-dodecanal were dissolved in 40-ethyl acetate,
I117 of concentrated hydrochloric acid was added. After stirring at room temperature for 8 hours,
The reaction mixture was poured into water and extracted with ethyl acetate.

The remaining organic layer was dried over anhydrous sodium sulfate, concentrated, and the residue was crystallized from n-hexane/ethyl acetate (I0/1), yielding 15.7 g of Exemplified Compound (5) as white crystals (melting point: 163°C). ) was obtained.

Synthesis Example 2 Synthesis of Exemplified Compound (3) 40g of t-octylhydroquinone and 1-butanol
3 g was dissolved in 100-ml ethyl acetate, and 7.2-ml concentrated hydrochloric acid was added. After stirring at room temperature for 7 hours, the same post-treatment as in Synthesis Example 1 was performed, and n-hexane/ethyl acetate (6/1
) to give 21 g of Exemplified Compound (3) as white crystals (2
(blackened at temperatures above 00°C).

Synthesis Example 3 Synthesis of Exemplary Compound (7) 27.6 g of 2.3-dimethylhydroquinone and 20 g of 1-decanal were dissolved in 150 mj of ethyl acetate at 30°C, 10 m7 of concentrated hydrochloric acid was added, and the mixture was reacted at room temperature for 5 hours. After completion of the reaction, the same post-treatment as in Synthesis Example 1 was carried out, followed by crystallization with n-hexane/ethyl acetate (I0/1) to obtain 13 g of Exemplified Compound (7) as white crystals (melting point: 171°C).

The amount of the reducing agent of the present invention added is 0°001 per mole of water.
-20 mol, particularly preferably 0.01-10 mol. Also, 0.0 per mole of the reducible dye-donating substance
The amount is 5 to 10 mol, particularly preferably 0.1 to 5 mol.

It is also possible to use a combination of the reducing agent of the present invention and a known reducing agent.

Examples of known reducing agents include U.S. Pat.
Columns 49-50 of No. 26, Columns 30-31 of No. 4.483.914, No. 4.330617, No. 4, 5
No. 90.152, No. (I) of JP-A-60-140335
7) - (I8) pages, No. 5740245, No. 56-13
No. 8736, No. 59-178458, No. 59-538
No. 31, No. 59-182449, No. 59-11112
No. 450, No. 60-119555, No. 60-1284
From No. 36 to No. 60-128439, No. 60-60
-198540, 60-181742, 6i2
No. 59253, No. 62-244044, No. 62-13
There are reducing agents and reducing agent precursors described in European Patent No. 220,746A2, pages 78 to 96, from No. 1253 to No. 62-131256.

Since the reducing agent of the present invention has low diffusivity, the reducing agent of the present invention (
It is preferred to use a combination of electron transfer agents and/or electron transfer agent precursors to facilitate electron transfer between the electron donor (electron donor) and the developable silver halide.

The electron transfer agent or its precursor can be selected from the above-mentioned known reducing agents or precursors thereof. It is desirable that the mobility of the electron transfer agent or its precursor is greater than that of the diffusion-resistant reducing agent (electron donor). Particularly useful electron transfer agents are 1-phenyl-3-virapritones or aminophenols.

The combination of electron donor and electron transfer agent of the present invention is preferably incorporated into a color photosensitive material.

Electron donors, electron transfer agents, or their precursors can be used in combination of two or more, and can be used in emulsion layers (blue-sensitive layer, green-irradiation layer, red-sensitive layer, infrared-sensitive layer, ultraviolet-sensitive layer) etc.) It can be added to each emulsion layer, it can be added only to the - part emulsion layer, it can be added to the layer adjacent to the emulsion (Haley silane prevention layer, undercoat layer, intermediate layer, protective layer, etc.), and it can also be added to It can also be added to all layers. The electron donor and the electron transfer agent can be added to the same layer or to separate layers. Also, these reducing agents can be added in the same layer as the dye-donating compound or in a separate layer, but the diffusion-resistant electron donor is not present in the same layer as the dye-donating compound. is preferred.

The electron transfer agent can be incorporated into the image receiving material (dye-fixed N), or if a solvent is present during development, it may be dissolved in this solvent.

The reducible dye-providing compound used in the light-sensitive material of the present invention is described in U.S. Patent No. 4.559.290, European Patent No. 220,
As described in No. 746A2, Publications No. 87-6199, etc., it is a non-diffusible compound that releases a diffusible dye by reacting with the reducing agent that remains unoxidized during development.

Examples include U.S. Pat. No. 4,139,389, U.S. Pat.
No. 57-84453, etc., a compound that releases a diffusible dye by an intramolecular nucleophilic substitution reaction after being reduced, U.S. Patent No. 4.232.107, JP-A-59
-101649, 61-88257, RD240
25 (I984) etc., a compound which releases a diffusible dye by an intramolecular electron transfer reaction after being reduced, West German Patent No. 3.008.588A, JP-A-1983-1
No. 42530, U.S. Pat. No. 4,343.893, U.S. Pat. No. 4.619,884, and other compounds whose single bonds are cleaved to release a diffusible dye after reduction; U.S. Pat. No. 4,450; Examples include nitro compounds that release diffusible dyes after accepting electrons, as described in US Pat.

Also, more preferably, European Patent No. 220.7
No. 46A2, published branch axis 87-6199, patent application 1986-3
Compounds having an N-X bond (X represents oxygen, sulfur, or nitrogen atom) and an electron-withdrawing group in one molecule, as described in No. 4953, No. 62-34954, etc., patent application No. 62-106
A compound having SO2-X (X has the same meaning as above) and an electron-withdrawing group in one molecule described in No. 885, patent application No. 1988-
106895, a po-x bond (X
is the same meaning as above) and an electron-withdrawing group, a c-x' bond (X' is the same as X or represents -S O2-) in one molecule as described in Japanese Patent Application No. 106887/1987. and a compound having an electron-withdrawing group.

Among these, compounds having an N-X bond and an electron-withdrawing group in the molecule are particularly preferred.
Compounds (I) to (3) described in 0.746A2,
(7) - (I0), (I2), (I3), (I5), (
23) to (26), (31), (32), (35), (
36), (40), (41), (44), (53)~(
59), (64), (70), public branch axis 87-6199
These include compounds (I1) to (23).

Hydrophobic additives, such as dye-donating compounds and the diffusion-resistant reducing agents of the present invention, can be incorporated into the layers of the photosensitive element by known methods, such as those described in U.S. Pat. No. 2,322,027. In this case, Japanese Patent Application Laid-Open No. 59-83154,
No. 59-178451, No. 59-178452, No. 59-178453, No. 59-178454, No. 5
9-178455, 59-178457, etc., if necessary, at a boiling point of 50°C.
It can be used in combination with a low boiling point organic solvent of ~160°C. As the high boiling point organic solvent, a compound having a viscosity at 25° C. of 50 centipoise or more and an 83% ratio of 10 or less is preferred. Examples include:

Viscosity permittivity (n-C+JzqOhP=0 89CP 4.01 + C1(zcOOc+Jzy(iso)
390 4.12No-C-COOC+sHz,
(iso)CHzCOOC+Jzt(iso) The amount of high boiling point organic solvent is 1g of the dye-donating compound used.
10 g or less, preferably 5 g or less. In addition, 1 cc or less for 1 g of binder, furthermore, Q, 5
cc or less, particularly 0.3 cc or less is suitable.

Dispersion methods using polymers described in Japanese Patent Publication No. 51-39853 and Japanese Patent Application Laid-Open No. 51-59943 can also be used.

In the case of a compound that is substantially insoluble in water, in addition to the above method, it can be made into fine particles in a binder and used as a dispersion table.

Various surfactants can be used when dispersing hydrophobic compounds in hydrophilic colloids. For example, JP-A-59
-157636, pages (37) to (38), those listed as surfactants can be used.

The light-sensitive material of the present invention basically contains a photosensitive silver halide, a binder, a reducing agent, a reducible dye-providing compound, and a high-boiling organic solvent on a support. These components are often added to the same layer, but if they are in a reactable state, they can be divided and added to separate layers.

For example, if a colored dye-providing compound is present in the lower layer of the silver halide emulsion, a decrease in sensitivity can be prevented. When the reducing agent is added not only to the emulsion layer but also to the intermediate layer, color reproducibility is improved.

In order to obtain a wide range of colors in the chromaticity diagram using the three primary colors of yellow, magenta and cyan, a combination of at least 3N silver halide emulsion layers each sensitive to a different spectral region is used.

For example, there are combinations of three layers such as a blue-sensitive layer, a green-sensitive layer, and a red-sensitive layer, and a combination of a green-sensitive layer, a red-sensitive layer, and an infrared-sensitive layer. Each photosensitive layer can be arranged in various arrangements known for conventional color photosensitive materials.

Further, each of these photosensitive layers may be divided into two or more layers as necessary.

The light-sensitive material of the present invention can be provided with various auxiliary layers such as a protective layer, an undercoat layer, an intermediate layer, a yellow filter layer, an antihalation layer, and a bank layer.

Silver halides that can be used in the present invention include silver chloride, silver bromide,
Silver halide emulsion used in the present invention may be silver iodobromide, silver chlorobromide, silver chloroiodide, or silver iodochlorobromide. It may also be an image-type emulsion. The internal latent image type emulsion is used as a direct reversal emulsion in combination with a nucleating agent and a photofog. It may also be a so-called core-shell emulsion in which the inside of the grain and the surface layer of the grain have different phases.
Silver halide emulsions may be monodisperse or polydisperse, and monodisperse emulsions may be mixed and used. Grain size is 0.1 to 2.
[mu], particularly preferably 0.2 to 1.5 [mu].The crystal habit of the silver halide grains may be cubic, octahedral, tetradecahedral, tabular with a high aspect ratio, or the like.

Specifically, U.S. Patent No. 4,500.626, column 50, U.S. Pat.
Any of the silver halide emulsions described in JP-A-62-253159 and the like can be used.

Although the silver halide emulsion may be used unripe, it is usually used after being chemically sensitized. For emulsions for conventional light-sensitive materials, known sulfur sensitization methods, reduction sensitization methods, noble metal sensitization methods, etc. can be used alone or in combination. These chemical sensitizations can also be carried out in the presence of a nitrogen-containing heterocyclic compound (JP-A-62-253159).

The coating amount of the photosensitive silver halide used in the present invention is in the range of 1 mg to 10 g/n (calculated as silver).

In the present invention, a metal salt can also be used as an oxidizing agent together with photosensitive silver halide.

Among such metal salts, organic silver salts are particularly preferably used.

Organic compounds that can be used to form the above-mentioned organic silver salt oxidizing agents include U.S. Pat.
There are benzotriazoles, fatty acids, and other compounds described in column 53, etc. Also useful are silver salts of alkynyl acids such as phenylpropiolic acid described in JP-A-60-113235, and acetylene silver as described in JP-A-61-249044. Two or more types of organic silver salts may be used in combination.

The above-mentioned organic silver salts contain, per mol of photosensitive silver halide,
0.01 to 10 mol, preferably 0.

01 to 1 mole can be used together. The total coating amount of photosensitive silver halide and organic silver salt is suitably 50 mg to 10 g/r+ (in terms of silver).

Various antifoggants or photographic stabilizers can be used in the present invention. For example, RD176
43 (I978), pages 24-25, nitrogen-containing carboxylic acids and phosphoric acids described in JP-A-59-168442, or mercapto compounds described in JP-A-59-11-1636. and metal salts thereof, acetylene compounds described in JP-A No. 62-87957, and the like.

The silver halide used in the present invention may be spectrally sensitized with methine dyes and others. The pigments used include cyanine pigments, merocyanine pigments, composite cyanine pigments, composite merocyanine pigments, holopolar cyanine pigments,
Included are hemicyanine dyes, styryl dyes and hemioxonol dyes.

Specifically, U.S. Pat.
17029 (I978), pages 12-13, 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, the emulsion may contain a dye that does not itself have a spectral sensitizing effect or a compound that does not substantially absorb visible light and exhibits supersensitization (for example, as described in U.S. Pat. , No. 615゜641, patent application No. 61-22
6294 etc.).

These sensitizing dyes may be added to the emulsion at or before chemical ripening, or as described in US Pat. No. 4.183.
It may be added before or after nucleation of silver halide grains according to No. 756 and No. 4,225.666, and the amount added is approximately IQ-11 to 104 mol per mol of silver halide.

A hydrophilic binder is preferably used for the constituent layers of the photosensitive material or dye fixing material. Examples include those described on pages (26) to (28) of JP-A-62-253159.

Specifically, transparent or translucent hydrophilic binders are preferred, and include natural compounds such as proteins or cellulose derivatives such as gelatin and gelatin derivatives, and polysaccharides such as starch, gum arabic, dextran, and pullulan.
Examples include polyvinyl alcohol, polyvinylpyrrolidone, acrylamide polymer, and other synthetic polymer compounds. In addition, super absorbent polymers described in JP-A-62-245260 etc., namely -COOM, -3o, M(
M is a hydrogen atom or an alkali metal) homopolymers of vinyl monomers or copolymers of these vinyl monomers with each other or with other vinyl monomers (e.g. sodium methacrylate, ammonium methacrylate, Sumitomo Chemical)
Sumikagel L5H), manufactured by Co., Ltd., is also used. Two or more of these binders can also be used in combination.

When employing a system that performs thermal development by supplying a small amount of water, the use of the above-mentioned super absorbent polymer makes it possible to quickly absorb water. Further, when a highly water-absorbing polymer is used in the dye fixing layer or its protective layer, it is possible to prevent the dye from being retransferred from the dye fixing material to another material after transfer.

In the present invention, the amount of binder applied is 20 per 1 d.
The amount is preferably 10 g or less, more preferably 7 g or less.

Constituent layers (including back layers) of photosensitive materials or dye-fixing materials contain various polymers for the purpose of improving film properties such as dimensional stabilization, prevention of curling, prevention of adhesion, prevention of film cracking, and prevention of pressure sensitivity. It can contain latex. Specifically, JP-A-62-245258 and JP-A-62-136
Any of the polymer latexes described in No. 648, No. 62-110066, etc. can be used. In particular, using a polymer latex with a low glass transition point (below 40°C) for the mordant layer can prevent cracking of the mordant layer, and using a polymer latex with a high glass transition point for the back layer can prevent curling. can get.

In the present invention, a compound that activates development and stabilizes images can be used in the light-sensitive material. For specific compounds preferably used, see U.S. Patent No. 4,50.
No. 0,626, columns 51-52.

In systems that form images by diffusion transfer of dyes, dye fixing materials are used together with photosensitive materials. The dye fixing material may be coated separately on a support separate from the light-sensitive material, or may be coated on the same support as the light-sensitive material. Regarding the relationship between the light-sensitive material and the dye-fixing material, the relationship with the support, and the relationship with the white reflective layer, the relationships described in column 57 of U.S. Pat. No. 4,500,626 can be applied to the present application.

The dye fixing material preferably used in the present invention has at least one layer containing a mordant and a binder. As the mordant, those known in the photographic field can be used, and specific examples thereof include U.S. Pat. The mordant described in JP-A No. 62-244043, No. 62-
Examples include those described in No. 244036 and the like.

Also, dye-receiving polymeric compounds such as those described in US Pat. No. 4,463,079 may be used.

The dye fixing material may be provided with auxiliary layers such as a protective layer, a release layer, and an anti-curl layer, if necessary.

In particular, it is useful to provide a 3IJi.

A high boiling point organic solvent can be used in the constituent layers of the light-sensitive material and the dye-fixing material as a plasticizer, a slippery agent, or a peelability improver between the light-sensitive material and the dye-fixing material. Specifically, pages (25) and 62 of JP-A-62-253159.
-245253, etc.

Furthermore, various silicone oils (
All silicone oils can be used, from dimethylsilicone oil to modified silicone oils in which various organic groups are introduced into dimethylsiloxane. For example,
Various modified silicone oils described in "Modified Silicone Oil" technical data P6-18B published by Shin-Etsu Silicone,
In particular, carboxy-modified silicone (product name X-22-37)
10) etc. are effective.

Also, Japanese Patent Application Publication No. 61-215953, Japanese Patent Application No. 622368
The silicone oil described in No. 7 is also effective.

Antifading agents may be used in the photosensitive materials and dye fixing materials. Antifading agents include, for example, antioxidants, ultraviolet absorbers, or certain metal complexes.

Examples of antioxidants include chroman compounds, coumaran compounds, phenol compounds (for example, hindered phenols), hydroquinone derivatives, hindered amine derivatives, and spiroindane compounds. Compounds described in JP-A-61-159644 are also effective.

Benzotriazole compounds (
U.S. Patent No. 3.533.794, etc.), 4-thiazolidone compounds (U.S. Pat. No. 3.352681, etc.),
Benzophenone compounds (JP-A-46-2784, etc.), other JP-A-54-48535, JP-A-62-136
There are compounds described in No. 641, No. 61-88256, and the like. Further, the ultraviolet absorbing polymer described in JP-A No. 62-260152 is also effective.

As metal complexes, US Pat. No. 4.241.155,
No. 4.245.018, columns 3 to 36, No. 4.25 of the same
No. 4,195, columns 3 to 8, JP-A-62-174741, JP-A-61-88256, pages (27)-(29), Japanese Patent Application No. 1983-234103, JP-A No. 62-31096, Japanese Patent Application No. 1983 There are compounds described in No.-230596 and the like.

Examples of useful anti-fading agents are disclosed in JP-A No. 62-215272 (
It is described on pages I25) to (I37).

The anti-fading agent for preventing fading of the dye transferred to the dye-fixing material may be included in the dye-fixing material in advance, or may be supplied to the dye-fixing material from outside the photosensitive material. .

The above antioxidants, ultraviolet absorbers, and metal complexes may be used in combination.

A fluorescent whitening agent may be used in the photosensitive material or dye fixing material. In particular, it is preferable to incorporate a fluorescent whitening agent into the dye-fixing material or to supply it from outside the light-sensitive material.
Chemistry of 5ynthetic Dy
Examples include compounds described in esj volume v chapter 8, JP-A-61-143752, and the like. More specifically, stilhen compounds, coumarin compounds (I,1
, biphenyl compounds, hendioxazolyl compounds,
Examples include naphthalimide compounds, birapurin compounds, and carbostyryl compounds.

Optical brighteners can be used in combination with antifade agents.

Hardeners used in constituent layers of photosensitive materials and dye-fixing materials include U.S. Pat. Examples include hardening agents described in No. 1, etc. More specifically, aldehyde hardeners (such as formaldehyde), aziridine hardeners, epoxy hardeners, and vinylsulfone hardeners (N, N'-ethylenebis(vinylsulfonylacetamide) ethanato). , N-methylol hardeners (such as dimethylol urea), or polymer hardeners (compounds described in JP-A-62-234157, etc.).

Constituent layers of photosensitive materials and dye-fixing materials contain coating aids and Ml.
Various surfactants can be used for the purpose of improving l i property, improving slipperiness, preventing static electricity, promoting development, etc. Specific examples of surfactants are given in JP-A-62-173463 and JP-A-62-173463.
-183457 etc.

The constituent layers of photosensitive materials and dye-fixing materials include improved slipperiness,
An organic fluoro compound may be included for the purpose of preventing static electricity and improving peelability. Representative examples of organic fluoro compounds include Japanese Patent Publication No. 57-9053, columns 8 to 17,
Fluorine surfactants described in No. 20944, No. 62-135826, etc., or hydrophobic fluorine compounds such as oily fluorine compounds such as fluorine oil or solid fluorine compound resins such as tetrafluoroethylene resin. can be mentioned.

A matting agent can be used in the photosensitive material and the dye fixing material. As a matting agent, silicon dioxide, polyolefin or polymethacrylate may be used.
In addition to the compounds described on page 29 of No. 6, Japanese Patent Application No. 110064/1982 and No. 62-11 of Henzoguanamine resin beads, polycarbonate resin beads, As resin beads, etc.
There is a compound described in No. 0065.

In addition, the constituent layers of the light-sensitive material and the dye-fixing material may contain a thermal solvent, an antifoaming agent, an antibacterial agent, colloidal silica, and the like. Specific examples of these additives are given in JP-A-61-
No. 88256, pages (26) to (32).

In the present invention, an image formation accelerator can be used in the light-sensitive material and/or the dye-fixing 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. Physicochemical functions include bases or base precursors, nucleophilic compounds, high-boiling organic solvents (oils), thermal solvents, surfactants, and silver. It is also classified as a compound that interacts with silver ions. However, these substance groups generally have multiple functions and usually have some of the above-mentioned promoting effects. For more information on these see U.S. Patent No. 4.67.
8.739 No. 38-40 Dounan.

Examples of base precursors include salts of organic acids and bases that are decarboxylated by heat, compounds that release amines by intramolecular nucleophilic substitution reaction, Rossen rearrangement, or Beckmann rearrangement. Specific examples thereof are described in U.S. Pat.

In a system in which thermal development and dye transfer are performed simultaneously in the presence of a small amount of water, it is preferable to include a base and/or a base precursor in the dye fixing material in order to improve the storage stability of the photosensitive material.

In addition to the above, combinations of poorly soluble metal compounds and compounds that can undergo complex formation reactions with metal ions constituting the poorly soluble metal compounds (referred to as complex-forming compounds), as described in European Patent Publication 210.660, and special Kaisho 61-232451
Compounds that generate bases by electrolysis, such as those described in this issue, can also be used as base precursors. The former method is particularly effective. 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.

Various development stoppers can be used in the light-sensitive material and/or dye-fixing material of the present invention in order to always obtain a constant image despite fluctuations in processing temperature and processing time during development.

The development stopper referred to here is a compound that neutralizes the base immediately after proper development or reacts with the base to lower the base concentration in the film and stop development, or a compound that inhibits development by interacting with silver and silver salts. It is a compound that

Specifically, an acid precursor that releases acid upon heating;
Examples include electrophilic compounds that undergo a substitution reaction with a coexisting base when heated, nitrogen-containing heterocyclic compounds, mercapto compounds, and precursors thereof.

For more details, see JP-A No. 62-253159 (31) - (
32) Described in Ft.

As a support for the light-sensitive material or dye-fixing material of the present invention, one that can withstand processing temperatures is used. -For boat fishing, paper and synthetic polymers (films) can be used. Specifically, polyethylene terephthalate, polycarbonate, polyvinyl chloride, polystyrene, polypropylene,
Polyimide, cellulose (e.g. triacetylcellulose) or films containing pigments such as titanium oxide, film-based synthetic paper made from polypropylene, synthetic resin valves such as polyethylene, and natural pulp. Mixed paper, Yankee paper, baryta paper, coated paper (especially cast coated paper), metal, cloth, glass, etc. are used.

These can be used alone, or can be used as a support laminated on one or both sides with a synthetic polymer such as polyethylene.

In addition, JP-A-62-253159 (29) to (3)
The supports described on page 1) can be used.

A hydrophilic binder, alumina sol, a semiconductive metal oxide such as tin oxide, carbon black or other antistatic agent may be applied to the surface of these supports.

Methods of exposing and recording images on photosensitive materials include, for example, directly photographing landscapes and people using a camera, exposing through reversal film or negative film using a printer or enlarger, and using a copying machine. A method of scanning and exposing an original image through a slit using an exposure device, etc. A method of exposing image information by emitting light from a light emitting diode, various lasers, etc. via an electric signal, image information T-CRT, liquid crystal display, electroluminescence There is a method of outputting the image to an image display device such as a display or a plasma display and exposing the image directly or through an optical system.

Light sources for recording images on photosensitive materials include natural light, tungsten lamps, light emitting diodes, laser light sources, CRT light sources, etc. as mentioned above, such as U.S. Pat. No. 4.500.6.
The light source described in No. 26, column 56 can be used.

Further, image exposure can also be performed using a wavelength conversion element that combines a nonlinear optical material and a coherent light source such as a laser beam. Here, nonlinear optical materials are materials that can exhibit nonlinearity between the polarization and electric field that appear when a strong optical electric field such as a laser beam is applied, and include lithium niobate, potassium dihydrogen phosphate (KDP) ), lithium iodate, inorganic compounds such as BaBzO4, urea derivatives, nitroaniline derivatives, such as 3-methyl4
- Nitropyridine-N-oxide derivatives such as nitropyridine-N-oxide (POM), JP-A-61-53
Compounds described in No. 462 and No. 62-210432 are preferably used. As the form of the wavelength conversion element, single crystal optical waveguide type, fiber type, etc. are known, and both are useful.

The above-mentioned image information includes image signals obtained from video cameras, electronic still cameras, etc., television signals represented by the Nippon Television Signal Standard (NTSC), and images obtained by dividing an original image into a large number of pixels using a scanner. signal, CG, C
Image signals created using a computer such as AD can be used.

The photosensitive material and/or the dye-fixing material may have a conductive heating layer as a heating means for heat development or diffusion transfer of the dye.

In this case, the transparent or opaque heating element is
1-145544 can be used. Note that these conductive layers also function as antistatic layers.

The temperature for the development (and/or transfer) process can be arbitrarily set at about 10°C or higher, but especially when thermal development is used, the heating temperature can be set at about 50°C to about 250'C. The dye diffusion transfer step, which is particularly useful at a temperature of about 0° C. to about 180° C., may be carried out simultaneously with the heat development, or may be carried out after the heat development step is completed. In the latter case, the heating temperature in the transfer step can be in the range from the temperature in the heat development step to room temperature, but is particularly preferably 50° C. or higher and up to about 10° C. lower than the temperature in the heat development step.

Dye migration can also be caused by heat alone, but a solvent may be used to promote dye migration.

Also, JP-A-59-218443, JP-A No. 6123805
6, etc., a method in which development and transfer are performed simultaneously or continuously by heating in the presence of a small amount of solvent (particularly water) is also useful. In this method, the heating temperature is 50
The temperature is preferably at least °C and at most the boiling point of the solvent. For example, when the solvent is water, the temperature is preferably 50°C or more and 100°C or less.

Examples of solvents used to accelerate development and/or transfer the diffusible dye to the dye fixed layer include water or basic aqueous solutions containing inorganic alkali metal salts or existing bases (such bases include Those described in the section of image formation accelerators can be used. Furthermore, a low boiling point solvent or a mixed solution of a low boiling point solvent and water 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 a method of applying them to dye fixing materials, photosensitive materials, or both.

The amount used may be as small as less than the weight of the solvent corresponding to the maximum swelling volume of the entire coating (particularly less than the weight of the solvent corresponding to the maximum swelling volume of the entire coating minus the weight of the entire coating).

As a method for applying a solvent to the irradiated light layer or the dye fixed layer, there is, for example, the method described in JP-A-61-147244 (page 26). It is also possible to use the solvent by incorporating it into the photosensitive material, the dye fixing material, or both in advance, such as by encapsulating the solvent in microcapsules.

Furthermore, in order to promote dye transfer, a method may be adopted in which a hydrophilic thermal solvent that is solid at room temperature and dissolves at high temperature is incorporated into the light-sensitive material or dye fixing material. The hydrophilic thermal solvent may be incorporated in either the photosensitive material or the dye fixing material (or it may be incorporated in both).The layer in which it is incorporated may also be an emulsion layer, an intermediate layer, a protective layer, or a dye fixing layer. is preferably incorporated into the dye fixing layer and/or its adjacent layer.

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

Further, in order to promote dye transfer, a high boiling point organic solvent may be included in the light-sensitive material and/or the dye fixing material.

Heating methods in the development and/or transfer process include contact with a heated block or plate, contact with a hot plate, real presser, heat roller-halogen lamp heater, infrared and far-infrared lamp heater, etc. For example, it may be passed through a high-temperature atmosphere.

The pressure conditions and method of applying pressure when overlapping the photosensitive material and the dye-fixing material and bringing them into close contact are described in Japanese Patent Application Laid-Open No. 1472-1983.
The method described in No. 44, page 27 can be applied.

Any of a variety of thermal development equipment can be used to process the photographic elements of this invention. For example, JP-A No. 5975247, No. 59-177547, No. 59181353, No. 60
Apparatuses such as those described in Japanese Utility Model Application Publication No. 18951, Japanese Utility Model Application Publication No. 62-25944, etc. are preferably used.

The color light-sensitive material of the present invention may be designed to be processed by a so-called conventional wet color diffusion transfer method. In this case, the above-mentioned photosensitive material and dye fixing material can be used, except for additives (for example, organic silver salts) that are difficult to heat develop. The base and electron transfer agent may be supplied from the processing solution in a rupturable container. A viscosity imparting agent and the like can be added to this treatment solution as is well known. The color diffusion transfer method is
These methods are well known in this field, and the present invention can apply any of these known means.

Example 1 The method for preparing emulsion (I) for the first N will be described.

Well-stirred gelatin water? 8 liquid (water 100Q m
Contains 20g of gelatin and 3g of sodium chloride in 75
1,600 ml of an aqueous solution containing sodium chloride and potassium bromide (kept at a temperature of
0.59 mol of silver nitrate dissolved in 0 Ial) was simultaneously added at an equal flow rate over 40 minutes. In this way, a monodisperse cubic silver chlorobromide emulsion (80 mol % of a-element) with an average grain size of 0° and 35 μm was prepared.

After washing with water and desalting, 5 mg of sodium thiosulfate and 4-hydroxy-6-methyl 1.3.3a, 7-chitrazaindene 2
Chemical sensitization was performed at 60°C by adding Qmg. The yield of emulsion was 600 g.

Next, how to prepare the emulsion (I1) for the third layer will be described.

Add 600 ml of an aqueous solution containing sodium chloride and potassium bromide to a well-stirred aqueous gelatin solution (20 g of gelatin and 3 g of sodium chloride in 1,000 ml of water kept at 75°C) and an aqueous silver nitrate solution ( Water 600-
(in which 0.59 mol of silver nitrate was dissolved) and the following dye solution (+) were simultaneously added at equal flow rates over 40 minutes. In this way, a monodisperse cubic silver chlorobromide emulsion (bromine 80 mol %) was prepared, in which a dye having an average grain size of 0.35 μm was adsorbed.

After washing with water and desalting, 5 mg of sodium thiosulfate and 20 mg of 4-hydroxy-6-methyl l, 3.3a, 7-chitrazaindene
Chemical sensitization was carried out at 60° C. The yield of emulsion was 600 g.

Dye solution (+) Dye with the following structure 160 mg methanol 40 〇- Next, the method for preparing the emulsion (I[I) for the fifth layer will be described.

Add 1000 ml of an aqueous solution containing potassium iodide and potassium bromide to a well-stirred gelatin aqueous solution (20 g of gelatin and ammonium dissolved in 1000 d of water and keep warm at 50°C) and a silver nitrate aqueous solution (water). 1000
+a7 with 1 mol of silver nitrate dissolved) at the same time as pA
g was added while keeping it at a constant level. In this way, the average particle size is 0. A 5μ monodispersed octahedral silver iodobromide emulsion (5 mol% iodine) was prepared.

After washing with water and desalting, 5 mg of chloroauric acid (tetrahydrate) and 2 mg of sodium thiosulfate were added to perform gold and sulfur sensitization at 60°C. The yield of emulsion was 1 kg.

Next, we will describe how to make a gelatin dispersion of a dye-donating substance.

Weigh out 18g of yellow dye-donating substance (I)*, 9g of electron donor (I)*, and 9g of tricyclohexyl phosphate, add 46g of ethyl acetate, and add about 60g of yellow dye-donating substance (I)*.
The mixture was heated and dissolved at ℃ to form a homogeneous solution. 7 volumes of this liquid and 10% of lime-processed gelatin? & 100 g, water 60
cc and sodium dodecylbenzenesulfonate 1.
After stirring and mixing with 5 g, the mixture was dispersed using a homogenizer at 110,000 rpm for 10 minutes.

This dispersion is called a yellow dye-providing substance dispersion.

Similar to the dispersion of the yellow dye-providing substance, the magenta and cyan dye-providing substance dispersions are magenta dye-providing substance H21* or Noan's dye-providing substance (
3) Made using *.

From these, a photosensitive material 1.1 having the structure shown in the following table was prepared.

[Compound of the present invention whose electron donor (I)* in the 1N, 3rd layer, and 5@ in the photosensitive material 101 is shown in Table 2 0.7
Photosensitive materials 102 to 105 having the same structure as photosensitive material 1O1 were prepared except that the moles were replaced by double the molar amount.

Note that the reducing agent (I) was dispersed and added to the polymer (I)* by the following method.

15 g of reducing agent (I) and 7.5 g of polymer (I) were dissolved in ethyl acetate 40 at about 60° C. to form a homogeneous solution. this? 8 liquid and 10% water of lime-processed gelatin? 8 liquid 1
00g and a 5% aqueous solution of surfactant (5)* 3.8-
After stirring and mixing, use a homogenizer for 10 minutes.
Dispersed at 0000 rpm.

Next, we will discuss how to make the dye fixing material.

A dye fixing material R-1 was prepared by coating on a paper support laminated with polyethylene according to the composition shown in the following table.

B, G in which a tungsten light bulb is used for the multilayered color photosensitive materials 101 to 105, and the density changes continuously.
, R and Gray color separation filters at 500 lux for 1 second.

15 ml/m of water was supplied to the emulsion surface of the exposed light-sensitive material using a wire bar, and then the material was superimposed so that the dye-fixing material and the film surface were in contact with each other.

The film was heated for 15 seconds using a heat roller whose temperature was adjusted so that the temperature of the water-absorbed film was 85°C.

Next, when peeled off from the dye fixing material, B,
Clear images of blue, green, red, and gray were obtained corresponding to the G, R, and gray color dispersion filters.

Table 2 shows the results of measuring the maximum density (Dn+ax) and minimum density (Dmin) of each color of cyan, magenta, and yellow in the gray part.

Table 2 also shows the results of storing the color photosensitive materials 101 to 105 for one week at 45 DEG C. and 70% relative humidity and then processing them in the same manner.

Example 2 In the photosensitive materials 101 to 105 of Example 1, the second layer,
Reducing agent (I) * Polymer (I) added to the fourth intermediate layer
) * and surfactant (5) * Photosensitive material 201
~205 was created. In addition, in photosensitive materials 201 to 205, the same compound as the electron donor used in the first layer, third layer, and fifth layer was dispersed in the intermediate layer of the second layer and the fourth layer, respectively, by the method described below. The reducing agent for photosensitive material 101 (
I) *Add to photosensitive material 301~ in an equimolar amount
305 was created.

28 mmol of each electron donor and high boiling point organic solvent (I) *6
Dissolve g in ethyl acetate 40 at about 60°C to form a homogeneous solution.
It was made into 8 liquids. This solution, 100 g of a 10% aqueous solution of lime-treated gelatin, and 13 g of a 5% aqueous solution of surfactant (3)*
．． After stirring and mixing 1 and 1, use a homogenizer for 10 minutes.
0000rp ugly and dispersed.

The photosensitive materials 201 to 205 and 301 to 305 were exposed to light using a spectrograph through a wenge whose density was continuously changing in the direction perpendicular to the wavelength, and the dye fixing material of Example 1 was used. When processed in the same manner as above, photosensitive material 2
All of Samples Nos. 01 to 205 had insufficient color reproduction, but all of Photosensitive Materials 301 to 305 had good color reproduction.

In addition, photosensitive materials 201 to 205 and 301 to 305 were added to 4
When the photographic properties of photosensitive materials 201 and 301 were compared after being stored for one week at 5°C and 70% relative humidity, the increase in DIllin was large, while the other photosensitive materials showed a large increase in DIllin. There was little variation in gender.

It has been found that by using the reducing agent (electron donor) of the present invention in the intermediate layer, color reproducibility can be improved and a photosensitive material with excellent storage stability can be provided.

Example 3 Using the same emulsion, dye-donating substance, electron donor, and electron transfer agent as those used in the color photosensitive material 101 of Example 1, a color photosensitive material 401 having a multilayer structure as shown in Table 3 was prepared.

Note that unless otherwise specified, the same additives as in Photosensitive Material 101 were used.

The silver salt emulsion was prepared as follows.

20 g of gelatin and 5.9 g of 4-acetylaminophenylpropiolic acid were mixed with 10 g of 0.1% sodium hydroxide aqueous solution.
0011d! and dissolved in ethanol 200I11. This solution was kept at 40°C and stirred. Add 4 silver nitrate to this solution.
．． Excess salt was removed by a precipitation method in which 5 g of the solution was dissolved in 200 d of water and added over 5 minutes. Then adjust the pH to 6
．． 3 to obtain a yield of 300 g of an organic silver salt dispersion.

Further, antifoggant precursor (I)* having the following structure was added in 0.2 times the mole of the dye-donating substance and dispersed in oil according to the method of Example 1 together with the dye-donating substance and the electron donor.

The same as the photosensitive material 401 except that the compound (5) or (24) of the present invention was added in an equimolar amount instead of the electron donor (I)* used in the first, third, and fifth layers of the photosensitive material 401. Photosensitive materials 4゜2 and 403 having the same structure
It was created.

Next, how to make the dye fixing material (R-2) will be described.

Poly(methyl acrylate-N, N, N-trimethyl-N-vinylbenzylammonium chloride) (ratio of methyl acrylate and vinylbenzylammonium chloride is 1:1) Log was dissolved in 200 - water and 10
% lime-treated gelatin and 100 g of the lime-treated gelatin. A hardening agent was added to this mixture and the mixture was uniformly coated to a wet film thickness of 90 IIm on a paper support laminated with polyethylene in which titanium dioxide was dispersed. After drying, this sample is used as a dye fixing material (R-2) having a mordant layer.

After exposure in the same manner as in Example 1, it was heated uniformly for 30 seconds on a heat block heated to 140°C.

After supplying 20 liters of water per bottle to the film side of the dye fixing material (R-2), the heat-treated photosensitive material was placed on top of the fixing material so that the film surfaces were in contact with each other. A linear speed of 12 [l] was applied to a laminator heated to
After passing through the dye at 111/sec, both materials were peeled off to obtain a positive image on the dye-fixing material.

Gray DvI for some cyan, magenta, and yellow colors
ax was measured. Further, the above photosensitive materials 401 to 403 were stored for one week at 45 DEG C. and 70% relative humidity, and then processed in the same manner, and their photographic properties were compared with those processed immediately after preparation. Photosensitive material 401 showed a large increase in Dmin in the forced test, but photosensitive materials 402 and 403 showed little variation in photographic properties. It has been found that the storage stability of photosensitive materials can be improved by using the reducing agent (electron donor) of the present invention.

Example 4 A photosensitive material 501 was prepared by sequentially applying the eyebrows shown below on a transparent polyethylene terephthalate support.

Note that unless otherwise specified, the same additives as in Photosensitive Material 101 were used.

Opaque layer (°) comprising a white reflective layer comprising a dye-receiving layer comprising a dye-receiving layer (°) Green-sensitive layer (IX) comprising a surfactant (I) A yellow dye-donor layer (°) comprising a cyan dye-donor layer (0°20g/rr?) comprising a surfactant (I); an intermediate layer comprising a red-sensitive layer comprising a blue-sensitive layer; The (IV)th layer, (■)th layer, and (X)th layer of the photosensitive material 501
In place of the electron donor (I)* in the layer, the compound of the present invention (5
A photosensitive material 502 having the same composition as the photosensitive material 501 was prepared except that an equimolar amount of ) was added.

The following layers were then sequentially coated onto a transparent polyethylene terephthalate film to prepare a cover sheet.

Acid neutralization layer (n) containing cellulose acetate (saccharification degree 54%) Timing layer (I[l) coated with a thickness of 2 microns Copolymerized vinylidene chloride and acrylic acid Latinx coated with a thickness of 4 microns A timing layer and a processing solution having the following composition were prepared.

Potassium hydroxide 48g 4-hydroxymethyl-4-methyl-IP-)zyl-3-pyrazolidinone 10g 5-methylhenzentriazole 1.
5g Sodium sulfite 1.5g Potassium bromide 1g Benzyl alcohol 1.5 dCarboxymethyl cellulose 6.1g Carbon black
150g water Total amount is 1!
After exposing the photosensitive materials 501 and 502 to light through a wedge, they were overlapped with a cover sheet, and a pair of juxtaposed rollers was used to uniformly spread the processing solution therebetween to a thickness of 80 μm.

The results of sensitometry performed 1 hour after the treatment are shown in the following table.

Furthermore, when photosensitive materials 501 and 502 were stored for one week at 45°C and 70% relative humidity and then processed in the same manner, and compared with those processed immediately after preparation, it was found that
Although there was almost no variation in x, the increase in Dmin was smaller in photosensitive material 502 than in photosensitive material 501. It has been found that the storage stability of photosensitive materials can be improved by using the reducing agent of the present invention.

Patent Applicant: Fuji Photo Film Co., Ltd. Procedural Amendment 1986/ Moon cannon

Claims (1)

[Scope of Claims] A color photosensitive material comprising at least a photosensitive silver halide, a binder, a reducible dye-providing compound, and a reducing agent represented by the following general formula (I) on a support. General formula (I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼ In the formula, R^1 to R^6 are hydrogen atoms, halogen atoms, hydroxy groups, substituted or unsubstituted alkyl groups, aryl groups, acylamino groups, Represents an alkoxy group, aryloxy group, alkylthio group, arylthio group, acyl group, sulfonyl group, carbamoyl group, or sulfamoyl group. However, at least one of R^1 and R^3 and at least one of R^4 and R^6 represent a hydroxy group. Also, R^1 and R^2, R^2 and R^3, R^4 and R
^5, R^5 and R^6 may jointly form a carbocyclic ring. X represents a divalent linking group, and n represents 1 or 0.