JPH0229741A - Heatdevelopable color photosensitive material - Google Patents

Abstract

PURPOSE:To improve the faithful color reproducing ability of the photosensitive material by incorporating a compd. capable of absorbing a light having a specified wavelength in a blue sensitive layer or a protective layer contg. in the title material. CONSTITUTION:The compd. which is capable of absorbing the light having the wavelength of <=410nm and is shown by formulas I-IV, is incorporated in the blue sensitive layer or the protective layer to improve the faithful color reproducing ability. In formula I-IV, R1-R13 are each halogen atom (chlorine or bromine atom, etc.), an aliphatic group (methyl or ethyl group, etc.), an aromatic group (phenyl, tolyl, 4-methoxyphenyl or naphthyl group, etc.), acryloxy group (acetyloxy or benzoyloxy group, etc.), carbonamide group (acetoamide, benzamide, trifluoroacetoamide group, etc.), sulfoamide group (methane sulfonamide or benzene sulfonamide group, etc.), carbamoyl group (carbamoyl or dimethylcarbamoyl group, etc.), sulfamoyl group (sulfamoyl group, etc.).

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a line heat-developable color photosensitive material. This relates to developing color photosensitive materials.

(Prior art and its problems) Heat-developable photosensitive materials are well known in this technical field. (Published by) Bar staff~2! J direction, as described in U.S. Pat. No. 100,424, etc.

Many methods have also been proposed for obtaining positive color images by heat development.

For example, in US Pat. No. 312,290, there is a so-called DRR.
A reducing agent or its precursor is made to coexist with an oxidized compound that does not have dye-releasing ability, and the reducing agent is oxidized according to the amount of silver halide in 11 ft by heat development. I!
A method has been proposed in which a diffusible dye is released by reduction using a reducing agent that remains unoxidized. Also, European Patent Publication J
Ko07, No. 6, Public Technical Report 17-4/Tata (Vol. 1J, 22
(No.) describes a compound that releases a diffusible dye by a similar mechanism, and shows that it releases diffusible dye by reductive cleavage of the N-X bond (XFi oxygen atom, i! elemental atom Matomo represents a sulfur atom). Heat-developable color photosensitive materials using dye tube-releasing compounds have been described.

Manufactured by Thermal Development Materials Co., Ltd., it is characterized by the ability to obtain color images through simple and quick processing, and can be used as a direct photographic material for color copiers and the like.

Preferably, the support contains at least a photosensitive silver, a binder, an electron transfer agent, an electron donor, and a reducible dye-donating compound that releases a diffusible dye by reducing the electron donor. Any color photosensitive material that can be developed may be used.

By the way, conventional direct photography photosensitive materials were not intended to reproduce faithful colors, but rather to reproduce colors that were pleasing to the viewer.

Therefore, it is expected that the spectral sensitivity of a direct photographic photographic material for the purpose of faithful color reproduction, typified by color copiers, will have different characteristics from the spectral sensitivity of conventional direct photographic photographic materials.

As a result of research, it has been found that keeping the blue-sensitive layer sensitive to dimensions including not only ultraviolet rays but also visible light with wavelengths up to 4110 nm has a great effect on faithful color reproduction. In the evening sensing layer, the conventional method of preventing the photosensitive material from becoming sensitive to sources with wavelengths around 00 nm or less is to insert a filter in the wavelength range that should be blocked into the darkness between the subject and the photosensitive material. is common. However, with this method, it is possible that the entire filter may not be used depending on the usage situation, which may cause a situation in which the performance of the photosensitive material cannot be fully brought out.

(Objective of the Invention) An object of the present invention is to provide a light-sensitive material with the spectral sensitivity of the evening-sensitive layer for the purpose of faithful color reproduction, which is not affected by usage conditions.

(Structure of the Invention) The object of the present invention has been achieved by a photothermographic material characterized in that the blue-sensitive layer or the film-retaining layer contains a compound 'fc'6 that absorbs light with a wavelength of 10 nm or less.

Hiroshi/ which can be used for the evening sensing layer or protective layer of the present invention
Examples of compounds that absorb wavelengths of nm or less include benzotriazole compounds substituted with aryl groups (
(For example, as described in U.S. Patent No. 3.533.7)
, ≠-thiazolidone compounds (e.g. U.S. Pat. No. 3,3/3)
41,7, 3,332. lxza No. 7), benphenone compounds (for example, those described in JP-A-Sho≠t-27
g≠), cinnamate ester compounds (e.g., U.S. Pat. No. 7.703.101, U.S. Pat. No. 3,707.3)
No. 7j), butadiene compounds (such as those described in U.S. Pat. No. 3,7j), butadiene compounds (such as those described in U.S. Pat.
00. ≠Things described in No. 5) can be used. Furthermore, U.S. Pat. -4tr z31 can also be used. In addition, couplers (for example, cyan dye-forming couplers of α-naphthol type) or polymers (for example, JP-A-2003-120002) that absorb at this wavelength 'yt1 may also be used.

Compounds suitable for use in the present invention have the following formula - CI
], (IIl, (ll), CF).

General formula [I] General formula (111 General formula CIII) General formula (IV) Substituents R1 to used in the above general formulas [I] to (IV)
An example of R13 is shown below.

That is, halogen atoms (fluorine atoms, chlorine atoms, bromine atoms, etc.), aliphatic groups (methyl group, ethyl group, n-propyl group, i-propyl group, 5ec-butyl group, t-butyl group, t-amyl group) , t-hexyl 111-octyl group %--ethylhexyl M.

t-octyl group, dodecyl group, hexadecyl group, trifluoroacetyl group, benzyl group, etc.) S Aromatic group (phenyl group, tolyl group, Hiro-methoxyphenyl group, naphthyl group, etc.)% Acyloxy group (acetyloxy group, benzoyl group) oxy group, p-chlorobenzoyloxy group, etc.), carbonamide group (acetamide group, benzamide group, trifluoroacetamide group, etc.), sulfonamide group (methanesulfonamide group, benzenesulfonamide group, toluenesulfonamide group, etc.) ), carbamoyl group (carbamoyl group, dimethylcarbamoyl group, dodecylcarbamoyl S, etc.), sulfamoyl group (sulfamoyl group, dimethylsulfamoyl group).

Al based on phenylsulfamoyl group.

Compounds represented by general formulas (I) to (IV) have substituents EL
Any of R1 to R13 may be bonded to each other to form a bipolar body or a multimer of more than R1 to R13.
Any of R13 may be bonded to the main chain of the polymer to form a polymeric compound.

Among the above compounds, the compound represented by the general formula (IVI) is preferred because its handling and yield are particularly suitable for the purpose of the present invention.

Examples of compounds represented by formulas (I) to (mV) are shown below, but the invention is not limited thereto.

(t)C4H.

Ko (Su L 4 flg Ko zHs O x: y=7: j (Kenhi Shige) /// /t /7 ／　≠ I x:y=fO:jO (vehicle freight ratio) The above compound is contained in the protective layer or the red-sensitive layer.

The amount of the above compound added may be any amount, but
L2~0.02f/m” preferably o, 6y/
7112-0, OA f / rrL2.

However, if it is added to both the blue-sensitive layer and the protective layer, it is counted as one total filter.

In order to add the above compound used in the present invention to the blue-sensitive layer and the protective layer, the following dispersion method (JP-A-67-/!r7.24
4j) 1i- can be used.

For example, high-boiling organic solvents that are substantially insoluble in water [e.g.
Alkyl esters of 7-tar acid (e.g., dibutyl phthalate, dioctyl phthalate, etc.), trimellitic acid esters (e.g., tri-t-octyl trimellitate)
, aromatic ether.

Phosphate esters (e.g., diphenyl phosphate, triphenyl phosphate, tricresyl phosphate, tri-2-ethylhexyl phosphate, dioctyl butyl phosphate, leofosta-yo (Ajinomoto)
), citric acid esters (e.g. acetyl tributyl citrate).

Alkylamide (e.g. [N, N-diethyl laurylamide]), a method of dissolving the bath in lilac oil, etc., and emulsifying and dispersing the entire hydrophilic organic colloid in the resulting bath liquid (for example, U.S. Pat. No. 2,322,027, etc.) ), co-solvent (
For example, an emulsification dispersion method using a water-insoluble high boiling point shoulder bath medium (e.g. , U.S. Patent No. 739
゜rtr issue, same number 3.3! /, No. 61/, Tokukai Shoj/-
(see IPF No. 413, etc.), the above compound sounds, organic bath mediums (
Substantially water-insoluble high-boiling organic solvents, substantially water-insoluble low-temperature bathing solvents, water-miscible organic solvents, etc.) or oily substances themselves); A latex dispersion method in which FA is added to an aqueous polymer latex dispersion or a polymer latex containing all hydrophilic colloids, and the compound of the present invention is dispersed in a state impregnated into polymer latex particles (for example, a latex dispersion method (for example, Tokuko Shoj/
-32113, JP-A-J/-j5FIF$J, same!
/-j tag No. 3), the above compound in a water-soluble solvent (
For example, a method in which the compound used in the present invention is dissolved in acetone, methyl cellosolve, methanol, ethanol, etc.) and directly dispersed in a hydrophilic organic colloid coating liquid of a dye fixing material, and when the compound used in the present invention itself is an oily substance at room temperature. Examples include a method in which the compound itself is emulsified and dispersed in a hydrophilic organic colloid solution and added to the liquid. Particularly preferred is a method in which the material is dissolved in a substantially water-insoluble high-boiling organic solvent, or in combination with an auxiliary solvent, and then emulsified and dispersed in an aqueous solution of a hydrophilic organic colloid, or a latex dispersion method.

The compound used in the present invention has a high boiling point organic solvent for emulsification/dispersion of about 0.0%/f. /~about l0rd, preferably 0.2
Emulsify and disperse using ~100ml. In addition, the weight ratio of the above compound and the dispersion bath polymer latex was set to about 0, i - about 10.
Preferably, the latex content tl is used in the range of 0.2 to H.
[fle.

The heat-developable photosensitive material of the present invention basically has a photosensitive silver halide, a binder, and a dye-providing compound (which may also serve as a reducing agent as described later) on a support, and further If necessary, organic metal salt oxidizer etc.
It can be made publicly owned.

These components are often added to the same layer, but if possible, they can be added separately to separate layers. When a colored dye-providing compound is present in the lower layer of the silver halide emulsion, a decrease in sensitivity can be prevented.

It is preferable that the reducing agent be incorporated into the photothermographic material, but it may also be supplied from the outside, for example by diffusing it from a dye fixing material, which will be described later.

In order to obtain a wide range of colors within the chromaticity range using the three primary colors yellow, magenta and cyan, silver halide emulsions sensitive to at least 3A+1 different spectral regions are used in combination.

For example, there is a combination of three layers: a blue-sensitive layer, a green-sensitive layer, and a red-sensitive layer. Each photosensitive layer can be arranged in any of the known arrangements for conventional color photosensitive materials. Further, each of these photosensitive layers may be divided into co-layers or more as necessary.

The heat-developable photosensitive material 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 pack layer.

Silver halides that can be used in the present invention include silver chloride, silver bromide,
Any of silver iodobromide, silver chloride, silver chloroiodide, and silver chloroiodobromide may be used.

The silver halide emulsion 1 used in the present invention may be a surface latent image type emulsion or an internal latent image type emulsion. The internal latent image type emulsion is used as a direct reversal emulsion in combination with a nucleating agent f and a fogging agent. Also.

It may be a so-called core-shell emulsion in which the inside of the grain and the surface layer of the grain have different phases. The silver halide emulsion may be either a polydisperse or a polydisperse emulsion, and may be used in combination with a monodisperse emulsion.The grain size is 0. /-1μ, particularly preferably 0.2 to i3μ, the crystal habit of the silver halide grains is cubic, l bacterial cells, l
It may be particulate, high aspect ratio tabular, or other.

Specifically, U.S. Patent No. 3,! No. 00,624 jo@
, No. 44, 421, No. 02/, +3? Any of the silver halide emulsions described in F. Disclosure Magazine (hereinafter abbreviated as RID) 170 Kota (1977), JP-A-62-2-3/J9, etc. can be used.

Although silver halide emulsions may be used unripe, they are usually chemically sensitized before use. 0 Conventional emulsions for sensitizing materials include well-known sulfur sensitization methods, reduction sensitization methods, and noble metal sensitization methods. These can be used alone or in combination. These chemical sensitizations can also be carried out in the presence of a nitrogen-containing heterocyclic compound (Japanese Patent Application Laid-open No. 13112).

The coating weight of photosensitive silver halide conveniently used in the present invention ranges from 1 to 10 9 /rn''.

The silver halide used in the present invention may be spectrally sensitized with methine dyes and others. Dyes used include cyanine dyes, merocyanine dyes, complex cyanine dyes, and complex merocyanine dyes.

Included are holopolar cyanine dyes, hemicyanine dyes, styryl dyes and hemioxonol dyes.

Specifically, U.S. Pat.
Examples include sensitizing dyes described in LD/7029(/97t6iE,)/2 to/3 pages.

These sensitizing dyes may be used alone or in combination, and combinations of sensitizing dyes are often used particularly for the purpose of one-strong color sensitization.

Along with the sensitizing dye, the emulsion may contain a dye that itself does not have a spectral sensitizing effect or a compound that does not substantially absorb visible light and exhibits supersensitization (vA
For example, Mokukuni Patent No. 3,1air.

6 Kota No. 1, as described in Tokkō Sho 6 Fuichi-ko 6 Kota No. ≠, etc.).

These sensitizing dyes may be added to the emulsion at or before chemical ripening, or as described in U.S. Pat.
Zrt No., same issue, No. 221,444, JP-A-1973-1
It may be carried out at the time of grain formation of silver halide grains according to No. 92237. Additives are generally io per mole of silver halide.
-'' to lo-2 molar species.

In the present invention, it is preferable to spectrally sensitize the silver halide emulsion used in the sensitizing layer with a sensitizing dye. The sensitizing dye used in this case is one that has a spectral sensitizing ability in the blue region, and monomethine cyanine staining or simple melo-7-anine dye is preferable. A specific example is patent application No. 62-14112.
No. 2 includes those described as D-/~p-/ri.

Further, in particular, emulsions to which blue-range sensitizing dyes are added during the formation of silver halide grains tend to exhibit the faithful writing improvement effect of the present invention.

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

Among such organic 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. No. 4,500,626;
There are benzotriazoles, fatty acids and other compounds described in columns 53 and the like. Also useful are silver salts of carboxylic acids having a furkynyl group, such as silver phenylpropiolate described in JP-A-113235, and silver acetylene as described in JP-A-61-249044. Two or more types of organic silver salts may be used in combination.

The above organic silver salts are photosensitive halogenated [per mol,
0.01 to 10 mol, preferably 0.01 to 1
Moles can be used together. The total coating amount of photosensitive silver halide and photographic silver salt is 5011 Ig to 10 in terms of silver.
g/a” is appropriate.

Various anticapri agents or photographic stabilizers can be used in the present invention. An example is RD176
43 (1978), pages 24-25, the nitrogen-containing carboxylic acid layer and phosphoric acid layer described in JP-A-59-168442, or the mercapto compounds described in JP-A-59-111636. and metal salts thereof, acetylene compounds described in Tokubetsu No. 1 [62-87957], and the like.

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 to translucent hydrophilic pine nuts are preferred, and include natural compounds such as proteins or cellulose derivatives such as gelatin and gelatin derivatives, polysaccharides such as starch, gum arabic, dextran, and pullulan, polyvinyl alcohol, Examples include voripinyl pyrrolyne, acrylamide polymer, and other synthetic polymer compounds. Also, JP-A-62-24
5260 etc., i.e. -C
Homopolymers of vinyl monomers having OOM or -So, M (M is a hydrogen atom or an alkali metal) or copolymers of these vinyl monomers with each other or with other vinyl monomers Examples include sodium taacrylate, ammonium methacrylate , Sumikagel L-58 manufactured by Sumitomo Chemical Co., Ltd.
) are 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
g or less is preferable, especially 10. Below, it is appropriate to further reduce the amount to 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. Finally, if a polymer latex with a low glass transition point (40°C or less) is used in the mordant layer, cracking of the mordant layer can be prevented, and if a polymer latex with a high glass transition point is used in the back layer, curling can be prevented. is obtained.

As the reducing agent used in the present invention, those known in the field of photothermographic materials can be used. ! It also includes dye-donating compounds with reducing properties, which will be described later (in this case, other reducing agents can also be used together). A reducing agent precursor that exhibits reducing properties through the action of can also be used.

Examples of reducing agents used in the present invention include U.S. Pat.
, No. 500.626, columns 49-50, same No. 4,483
, No. 914, columns 30-31, same No. 4゜330.617
No. 4,590,152, JP-A-60-1403
No. 35, pages (17) to (18), 57-40245
No. 56-138736, No. 59-178458, No. 59-53831, No. 59-182449, No. 59-182450, No. 60-119555, No. 6
From No. 0-128436 to No. 60-128439,
No. 60-60-198540, No. 60-181742
No. 61-259253, No. 62-244044, No. 62-131253 to No. 62-131256, European Patent No. 220,746A2, Nos. 78 to 96
There are reducing agents and reducing agent precursors described on pages etc.

Combinations of various reducing agents can also be used, such as those disclosed in US Pat. No. 3,039,869.

1. When using a diffusive reducing agent, an electron transfer agent may be added and/or as necessary to promote electron transfer between the diffusive reducing agent and the developable silver halide. Combinations of electron transfer agent precursors can be used.

The electron transfer agent or its precursor can be selected from the aforementioned reducing agents or its precursors. It is desirable that the mobility of the electron transfer agent or its precursor is greater than the diffusion-resistant reduction 3\IJ (electron donor). Particularly useful electron transfer agents are 1-phenyl-3-pyrazolidones or 7-minophenols. be.

The diffusion-resistant reducing agent (electron donor) used in combination with the electron transfer agent may be one of the above-mentioned reducing agents as long as it does not substantially migrate in the layer of the photosensitive material, and preferably hydroquinones, Examples include sulfonamide phenols, sulfone 7 midna 7 tols, compounds described as electron donors in JP-A-53-110827, and dye-donating compounds that are dispersible and have reducing properties as described below.

In the present invention, the addition of reducing agent 1 is 0 per mole of silver.
．． 0.001 to 20 mol, particularly preferably 0.01 to 10 mol.

In the present invention, silver can be used as the imaging material. It may also contain a compound that generates or releases a mobile dye in response to or inversely to this reaction when silver ions are reduced to silver under high temperature conditions, that is, a dye-donating compound. can.

Examples of dye-providing compounds that can be used in the present invention include compounds (couplers) that form dyes through oxidative coupling reactions.

This coupler may be a 4-equivalent coupler or a 2-equivalent coupler, and a 2-equivalent coupler having a diffusion-resistant group as a leaving group and forming a diffusible dye by an oxidative coupling reaction is also preferred. This diffusion-resistant group may be a polymeric compound. Specific examples of color developers and couplers are given in Noames M [The Theory of the Seven-Year-Old Graphic Process, 4th Edition (T, H0 James "The Theor.
y of the Photo.

graphic process'') 291-33
4 pages and 354-361 pages, JP-A-58-L235
No. 33, No. 58-149046, No. 58-14904
No. 7, No. 59-111148, No. 59-124399
No. 59-174835, No. 59-231539, No. 59-231540, No. 00-2950, No. 6
No. 0-2951, No. 60-14242, No. 60-23
It is described in detail in No. 474, No. 60-66249, etc.

Further, as another example of the dye-providing compound, there can be mentioned a compound having a function of releasing or diffusing a diffusible dye in an imagewise manner. This type of compound can be represented by the following general formula [LI].

(Dye-Y) n-Z (L I )Dye represents a dye group, -temporally shortened dye group or dye precursor group, Y represents a mere bond or linking group, and Z represents an imagewise Correspondingly or inversely to the photosensitive silver salt having a latent image, a difference is created in the diffusivity of the compound represented by (Dye-Y) n-Z, or Dye is released, and the released Dye and ( D ye -Y) n - Attenuates a group having properties that cause a difference in diffusivity between
ye-Y may be the same or different.

Specific examples of the dye-providing compound represented by the general formula (Ll) include the following compounds (1) to (2).

Note that ■ to ■ below are those that form a diffusive dye image (Bonn dye image) in reverse response to silver halide development.
(2) and (2) form a diffusive dye image (negative dye image) in response to silver halide development.

■U.S. Patent Nos. 3,134,764 and 3,362.
819, ff.13,597,200, ff.3.5
No. 44,545, No. 3,482,972, etc., a dye developer in which a dye component is linked to a hydraquinone developer, and this dye developer is diffusible in an alkaline environment. However, it becomes non-diffusible when it reacts with silver halide.

■As described in US Pat. No. 4,503,137, etc., non-diffusible compounds that release diffusible dyes in an alkaline environment but lose this ability when reacted with silver halide can also be used. Examples include U.S. Patent No. 3,980
A compound that releases a diffusible dye by an intramolecular nucleophilic substitution reaction described in U.S. Patent No. 4,199, etc.
Examples include compounds that release a diffusible dye through an intramolecular rewinding reaction of an inoxacilone ring, as described in No. 354 and the like.

■US Patent No. 4,559,290, European Patent No. 220
．． As described in No. 746A2, Technical Report 87-6199, etc., non-diffusible compounds that react with the reducing agent remaining unoxidized by development to release a diffusible dye can also be used.

Examples of this include the methods described in U.S. Patent No. 4,139,389, U.S. Pat. Compound releasing diffusible dye by nucleophilic substitution reaction, U.S. Pat. No. 4.232.107, JP-A-5
No. 9-101649, No. 61-88257, RD24
025 (1984) 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-1986-
142530, U.S. Pat. No. 14,343,893, U.S. Pat. No. 4,619,884, etc., compounds whose single bonds are cleaved after reduction to release a diffusible dye; U.S. Pat. No. 4,450; Nitro compounds that release diffusible dyes after receiving electrons, as described in US Patent No. 223, etc.
Examples include compounds that release a diffusible dye after receiving electrons, as described in No. S4,609.610 and the like.

Also, more preferably, European Patent No. 220.7
No. 46A2, Publication Branch No. 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
Compound having SQ, -X (X has the same meaning as above) and an electron-withdrawing group in one molecule described in No. 885, Japanese Patent Application No. 1982-1
No. 06895, a compound having a po-x bond (X is the same as above!) and an electron-withdrawing group in one molecule,
The compound described in No. 2-106887 has a c-x' bond (X' has the same meaning as X or abbreviates -5O2-) and an electron-withdrawing group in one molecule.

Among these, compounds having an N-X bond and an electron-withdrawing group in the molecule are particularly preferred.
Compounds (1) to (3) described in 0.746A2, (
7) to (10), (12), (13), (15), (2
3) - (26), (31), (32), (35), (3
6), (4o), (41), (44), (53)-(5
9), (64), (7o), and compounds (11) to (23) of Publication Branch No. 87-6199.

■A compound that is a coupler that has a diffusible dye as a leaving group and releases the diffusible dye upon reaction with the oxidized form of a reducing agent (D
DR coupler), i4: Physically, British Patent No. 1.3
No. 30,524, Japanese Patent Publication No. 48-39°165, US Pat. No. 3,443,940, US Pat.

■Reducing to silver halide or organic silver salt,
A compound that releases a diffusible dye upon reduction of its partner (DR
R compound), this compound is preferable because it does not require the use of other reducing agents, so there is no problem of image staining due to oxidative decomposition products of the reducing agent. A typical example thereof is U.S. Patent No. 3,92
No. 8,312, No. 4.053.312, No. 4.0
No. 55,428, No. 4,336,322, JP-A No. 5
No. 9-65839, No. 59-69839, No. 53-3
No. 819, No. 51-104, 343, RD17465
No. 3,725.062, U.S. Pat. No. 3,728
= No. 113, No. 3,443,939, JP-A-58-
No. 116,537, No. 57-179840, and US Pat. No. 4,500,626. Specific examples of DRR compounds include the aforementioned U.S. Patent No. 4,500,6
26, columns 22 to 44, among which the compounds described in the above-mentioned U.S. patent (
1) - (3), (10) - (13), (16) - (19
), (2S) ~ (30), (33) ~ (35), (38
) to (40), (42) to (64) are preferred, and the compounds described in U.S. Pat. No. 4,639,408, Nos. 37 to 39 are also useful.

In addition, dye silver compounds in which an organic silver salt and a dye are combined (Research Disclosure Magazine 19
May 1978 issue, pp. 54-58), azo dye used in heat-developable silver dye bleaching method (U.S. Patent Department 4,235,957)
No., Research Disclosure magazine, April 1976 issue, pages 30-32, etc.), Roif dye (U.S. patent a3.s
ss, s6s, 4,022,617, etc.) can also be used.

Hydrophobic additives such as dye-donating compounds and diffusion-resistant reducing agents can be incorporated into the layers of the light-sensitive material by known methods such as those described in U.S. Pat. No. 2,322,027. In this case, Japanese Unexamined Patent Application Publication Nos. 59-83154 and 59-83154,
No. 178451, No. 59-178452, No. 59-1
No. 78453, No. 59-178454, No. 59-17
No. 8455, No. 59-178457, etc., a high boiling point organic solvent with a boiling point of 50°C to 160°C is used as necessary.
It can be used in combination with a low boiling point organic solvent at ℃.

The amount of high-boiling organic solvent is 1 g of the dye-donating compound used.
10 g or less, preferably 5 g or less. Also, for Bangu 1.1m, ice is less than 0.5m, and even 0.5m.
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, it can be dispersed and contained in the form of fine particles in the bangu, in addition to the above-mentioned method.

When dispersing a hydrophobic compound in a hydrophilic colloid, various surfactants can be used.
-157636, pages (37) to (38), those listed as surfactants can be used.

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 protective layer.

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 trimethylsilicone oil to modified silicone oils in which various organic groups are introduced into dimethylsiloxane. For example,
"Modified silicone oil" issued by Shin-Etsu Silicone Co., Ltd.
Various modified silicone oils, especially carboxy-modified silicone (trade name X-22-
3710) etc. are effective.

Also, Japanese Patent Application Laid-Open No. 62-215953, Japanese Patent Application No. 62-236
The silicone oil described in No. 87 is also effective.

Antifading agents may be used in photosensitive materials and dye fixing materials. Examples of antifading agents include antioxidants, ultraviolet #iI
@There are astringents or certain metal complexes.

Examples of antioxidants include chroman-based compounds, coumaran-based compounds, and 7-ether-based compounds (e.g., Hingood 7).
2/-ols), hydroquinone derivatives, hindered amine derivatives, and spiroingene 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. Patent No. 3,352,681, etc.),
Benzo-7-based compounds (JP-A No. 46-2784, etc.), other JP-A Nos. 54-48535, 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
4.195 No. 3 to 8m, JP-A-62-174741, JP-A-61-88256 (27) to (2) pages, Japanese Patent Application No. 1982-234103, JP-A No. 62-31096, Japanese Patent Application No. 1988 There are compounds described in No.-230596 and the like.

Examples of useful anti-fading agents are disclosed in JP-A No. 62-215272 (
125) to (137).

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 brightener may be used in the light-sensitive material or the dye-fixing material. In particular, it is preferable to incorporate the fluorescent brightener into the dye-fixing material or to supply it from outside the light-sensitive material. , Veenkataraeian! rTb
e Chemistry of 5ynthet
ic DyesJ Volume V Chapter 8, JP-A-61-143
Examples include compounds described in No. 752 and the like. More specifically, examples include stilbene compounds, coumarin compounds, biphenyl compounds, benzoxacylyl compounds, naphthalimide compounds, pyrazoline 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 US Pat. No. 4,678,739 tt & 41! % Japanese Patent Publication No. 59-116655, 62-245261,
Examples include hardeners described in Japanese Patent No. 61-18942.

More specifically, aldehyde yarn type FJFI (formaldehyde, etc.), aziridine-based hardener, epoxy-based hardener, vinylsulfone-based hardener (N,N'-ethylene-bis(
(vinylsulfonylacetamido)ethane, etc.), N-methylol hardeners (dimethylol urea, etc.), and polymer hardeners (compounds described in JP-A-62-234157, etc.).

Various surfactants can be used in constituent layers of photosensitive materials and dye fixing materials for purposes such as coating aids, improving peelability, improving slipperiness, preventing static electricity, and promoting development. Specific examples of surfactants are given in JP-A-62-173463 and JP-A-62-18.
It is described in No. 3457, etc.

The constituent layers of photosensitive materials and dye-fixing materials include improved slipperiness,
IS is used for the purpose of preventing static electricity and improving peelability! Representative examples of organic fluoro compounds that may contain fluoro compounds include Japanese Patent Publication No. 57-9053, columns 8 to 17,
1-20944, 62-135826, etc., or hydrophobic agents such as oily 77-compounds such as fluorine oil or solid fluorine compound resins such as tetrafluoroethylene resin. Examples include natural fluorine compounds.

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 in No. 6 (page 29), benzoguanamine resin beads, polycarbonate resin beads, AStAI
Patent Application No. 110064/1988 for fat beads, etc.
There is a compound described in No. 110065.

In addition, the constituent layers of the photosensitive material and the dye-fixing material may contain thermal solvents, antifoaming agents, antibacterial agents, colloidal silica, etc. 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 layer V/or the dye fixing material. The image formation accelerator can be used to promote the oxidation-reduction reaction between a silver salt oxidizing agent and a reducing agent, or from a dye-donating substance. It has functions such as promoting reactions such as production of dyes, decomposition of dyes, and release of diffusible dyes, and promotion of transfer of dyes from the light-sensitive material layer to the dye fixing layer. Based on their ability, they are classified into bases or base precursors, nucleophilic compounds, high-boiling organic solvents (oils), thermal solvents, surfactants, and compounds that interact with silver or silver ions. However, these substance groups have multiple functions in one shell, and usually have some of the above-mentioned promoting effects. These details are available in U.S. Patent 4,67
No. 8,739, columns 38-40.

As a base precursor, W1 is decarboxylated by heat.
These include salts of acids and bases, compounds that release amines by intramolecular nucleophilic substitution reactions, Rossen rearrangement, or Beckmann rearrangement. Specific examples include U.S. Pat. No. 4,511,493,
It is described in Japanese Patent Application Laid-Open No. 62-65038.

In a system in which thermal development and dye transfer are carried out 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 capable of complexing reaction with metal ions constituting this poorly soluble metal compound (referred to as complex-forming compounds), as described in European Patent Publication No. 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 effective for vf. 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.

A development stopper at Uni is a compound that immediately neutralizes the base or reacts with the base to lower the base concentration in the film and stop development after proper development, or a compound that interacts with silver and silver salts to develop. It is a compound that suppresses

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

For more details, see JP-A No. 62-253159 (31) - (
It is described on page 32).

As a support for the light-sensitive material or dye-fixing material of the present invention, one that can withstand processing temperatures is used. Common examples include paper and synthetic polymers (films). Specifically, polyethylene terephthalate, polycarbine F, polyvinyl chloride, polystyrene, polypropylene,
Polyimide, cellulose (e.g. triacetyl cellulose) or films containing pigments such as titanium oxide, film-based synthetic paper made from polypropylene, etc., and synthetic paper made from synthetic resin pulp such as polyethylene and natural pulp. Mixed paper, Yankee paper, Baryta paper, Coachite paper (especially Castco)
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 (2) 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, a method of transmitting image information via an electric signal to a light emitting diode, a method of emitting light from various lasers, and a method of transmitting image information to a CRT, liquid crystal display, electroluminescent display, etc. There is a method of outputting the image to an image display device such as a 7-screen display or a plasma display, and exposing the image directly or through an optical system.

As mentioned above, light sources for recording images on photosensitive materials include natural light, tungsten lamps, light emitting diodes, laser light sources, CRT light sources, etc., such as U.S. Pat. No. 4,500,6.
It is possible to use the light source described in No. 26, tjS, column 56.
.

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, BaBO, etc., urea derivatives, nitroaniline derivatives, such as 3-methyl-
Nitropyridine-N-oxide derivatives such as 4-nitropyridine-N-oxide (POM), JP-A-61-5
Compounds described in No. 3462 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.

In addition, the above-mentioned image information can be obtained from image signals obtained from video cameras, electronic still cameras, etc., television signals represented by the Nippon Television Network Signal Standard (NTSC), and original images obtained by dividing them into a large number of pixels using a scanner. Image 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 heating temperature in the heat development process can be developed at about 0°C to about 250°C, but it is particularly useful to use a heating temperature of about 0°C to about 180°C.The dye diffusion transfer process is performed at the same time as the heat development. 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; More preferably, the temperature is up to about 10°C lower than the temperature at .

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. 61-2380
56, 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 5
The temperature is preferably 0°C or higher and the boiling point of the solvent or lower. For example, when the solvent is water, the temperature is preferably 50°C or higher and 100°C or lower.

Examples of solvents used to accelerate development and/or transfer the diffusible dye to the dye fixing layer include water or basic aqueous solutions containing inorganic alkali metal salts or organic bases (these bases may Those described in the section of the formation-promoting type can be used). Further, 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 anti-capri agent, 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 can be as small as less than the weight of the solvent corresponding to the maximum swelling volume of the entire coating film (particularly less than 1, which is the weight of the solvent corresponding to the maximum swelling volume of the entire coating film minus the weight of the entire coating film). .

As a method for applying a solvent to the photosensitive M or dye fixed layer, there is, for example, the method described in JP-A-61-147244, page (26). Further, the solvent can be incorporated in advance into the photosensitive material, the dye fixing material, or both, 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 into either the photosensitive material or the dye-fixing material, or may be incorporated into 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. Preferably, it is incorporated into the dye fixing layer and/or its adjacent layer.

Examples of hydrophilic thermal solvents include ureas, pyridines, amides, sulfonamides, imides, alnyls, oximes, and other heterocycles6. A 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 F, contact with a hot plate, hot presser, heat roller-halogen lamp heater, infrared and far-infrared lamp heater, etc. , passing through a high-temperature atmosphere, etc.

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 apparatuses can be used to process the photographic elements of this invention.
Apparatuses described in Japanese Utility Model No. 59-177547, No. 59-181353, No. 60-18951, Japanese Utility Model Application Publication No. 62-25944, etc. are preferably used.

/ , λ-bis(vinylsulfonylacetamido)ethane High boiling point organic solvent Tricyclohexylphosphneet Antifoggant (1) Anti-capri agent (2) H20 Preparation of emulsion (I) for the first layer> Well Stirring gelatin water #4 solution (gelatin powder Ot1 potassium bromide 22% HOCCHz in water room) z8
ccHz)z8ccHz)zOHo, add zt and t
o”c) in a silver nitrate water bath solution (silver nitrate 100
Dissolve the wavelength of light in water! 00d) and a halogen aqueous solution (by dissolving light with a wavelength of 71% potassium chloride in water.
oat, )t-added at the same time over 30 minutes. Start adding silver nitrate bath solution and halogen bath solution? The following dye bath solution was added over 2j minutes from &IO minutes. After washing with water and desalting, add gelatin 309 and pHA,! pAgf, 7
Adjusted to. This emulsion was mixed with sodium thiosulfate and chloroauric acid at tO'c and ≠-hydroxy-6-methyl-1.
Optimal chemical sensitization was carried out by adding 3°3a,7-titrazaintene. In this way, a monodisperse potato-shaped silver bromide emulsion with an average grain size of 0.358 m was obtained with light of 600 wavelengths.

\ol! - Preparation of emulsion (n) for the third layer> Add a silver nitrate bath solution (silver nitrate) to a well-stirred gelatin water bath solution (gelatin 20f, sodium chloride 4 ct% C in water t00rd)-13 dye tCH3). (soaked in 100ff water to make 100mt) and halogen water bath solution (7f sodium chloride and 6ff potassium bromide dissolved in water JOOm)
1) t-added at the same time over a period of μθ minutes. After the addition, the entire solution soaked in 0.2ff methanol/≠01 of the following dye was added. After washing with water and desalting, 30 ff of ash-treated ossein gelatin was added, and the pH was adjusted to 4, J, pAg 7, I. To this emulsion was added triethylthiourea and Hiroshi-Hydroxy-O-methyl-/, 3,3a, at 60"C. Optimal chemical sensitization was carried out by adding 7-chitrazaindene.

In this way, the average particle size is 00! A cubic silver bromide emulsion tooy'2 was obtained.

<Preparation of emulsion (III) for 45 layers> Well-stirred gelatin water bath solution (lime-treated ossein gelatin λ'y, sodium chloride≠ in 1.00 rut of water)
r, CH3 (containing CH3 0,02j9 and kept warm at Aj'c), the following (
1) Solution and (It) solution were added simultaneously in io sorting.

70 minutes after the addition was completed, the following (m)Hl(IV) solution was simultaneously added over 30 minutes. After washing with water and desalting, add 30ff of ash-treated gelatin to pH 1.0.

pAg7. Adjusted to r. For this emulsion! Triethylthiourea and chloroauric acid were added in step 1, followed by addition of triethylthiourea and chloroauric acid.

! Optimal chemical sensitization by adding ,3a,7-chitrazaindene? I did it. In this way, the average particle size 0,13
8m monodisperse cubic silver chlorobromide emulsion Tooy Kin Samurai.

Preparation of gelatin dispersion of dye-donating substance> Yellow dye-donating substance (Y)/JP, high boiling point aM medium 1x, j
y, electron donor t, ry, cyclohexanone J7rrd
Add and dissolve 70% gelatin % solution/00 f and dodecylbenzenesulfonic acid sorta λ, j % water bath solution tom
After stirring and mixing with i, use a homogenizer to sort io
Dispersion was performed at 10,000 rpm.

Magenta dye-donating substance (M)/l, rf, high boiling point organic solvent 1. ≠t1 electron donor 6.31, dissolved in total cyclohexanone 371, 10% gelatin bath H10oy
, 2. of sodium dodecylbenzenesulfonate. After mixing with stirring in an ice water bath, the mixture was dispersed using a homogenizer at 110,000 rpm for 70 minutes.

Cyan dye-donating substance ((:)/j, Hiro?, high boiling point organic common medium 7.7f, electron donor t,, ort-cyclohexanone 37g, dissolved in 10% gelatin bath solution 10
0t and 2-j'A of sodium dodecylbenzenesulfonate
After stirring and mixing in water baths gi and orni, the mixture was dispersed using a homogenizer at 110,000 rpm for 70 minutes.

A +U optical material λ having the same structure as that of the photosensitive material 1 except that the retention layer was changed to the structure shown in Table 2 was prepared.

Preparation of gelatin dispersion of the compound of the present invention> Compound (1) was dissolved in 10ff dibutyl phthalate 1O1Li,
After mixing and stirring 10% 0% gelatin water bath solution and 601% 2j% water bath solution of dodecylbenzenesulfone powder soda,
Dispersion was performed using a homogenizer for 10 minutes/000 r, p, m.

Photosensitive material 3t- was produced in the same manner as in photosensitive material 1 except that compounds 111J-1 and 5f/ff12 of the present invention were used in place of compound α9.

A photosensitive material No. 1 was prepared having the same structure as the photosensitive material I except that the emulsion (n> was changed to emulsion (F/)).

A photosensitive material jt having the same structure except that the emulsion (Ifi>t-emulsion U/) was used in the photosensitive material jt was prepared.

A photosensitive material t having the same structure as that of the photosensitive material j except that the compound t-0, 7t/n 2 of the present invention was used in place of the compound α9 of the present invention was prepared. “Emulsion (IV)
Preparation: A well-stirred gelatin aqueous solution (gelatin 20?, potassium bromide 3t and HO(CH2)2 in water roow)
8(CH2)28(CH2)20Ho, Jt was added and kept warm at toc), the following solutions (1) and (n) were added simultaneously over 30 minutes.9. After that, the following <m
)y and (F/) solutions were added simultaneously over 20 minutes. After addition, potassium iodide 12 water #! 30 liquids were added, and then all of the following dye bath liquids were added. Washed with water, desalted, then treated with ash, ossein gelatin x Ott added, pH 14, J, pAgr
, j, then sodium thiosulfate and hydroxyl-6-methyl-/, 3. Optimal chemical sensitization was then carried out by adding Jm, 7-chitrazaindene, and chloroauric acid.

In this way, a monodisperse monohedral silver iodobromide emulsion boot 1 having an average grain size of O0 hirojμ was obtained.

Preparation of dye fixing material by dissolving the dye solution in total methanol 70CK: A dye fixing material R-/ having the structure shown in Table 3 below was prepared.

Silicone oil, mordant, surfactant (a) Aerosol T High boiling point organic solvent “Leo Huostayo” (manufactured by Ajinomoto ■) Surfactant Φnc8F□7So2NcH2cooK 3H7 Surfactant (C) Matting agent benzoguanamine resin Average particle size 1
0 μ Polymer Polymer (b) H3 Vinyl alcohol sodium acrylate I ram copolymer (7j/co! molar ratio) Textran (molecules! i70,000) Tungsten with a color temperature of CorrrtlK as a ui+ source in the above multilayered color photosensitive material Heat development transfer was performed using a sphere under conditions that faithfully reproduced a neutral gray with a density of 0.7.

Macbeth's Color Chart 2≠Color Paper Print was used as the subject. /j ml/1112 of water was applied uniformly and evenly to this exposed light-sensitive material, and then immediately superimposed so that the constant dye material and the film surface of the light-sensitive material were in contact with each other. The film was heated for 11 seconds using a heat roller whose temperature was adjusted so that the temperature of the water-absorbed film was 13°C. When the photosensitive material was peeled off from the dye-fixing material, a Macbeth chart color image was obtained on the dye-fixing material.

CI of the obtained image and the color image of the color paper that is the subject
Comparative description of average color difference in E/RI6DAU"■"-uniform color space.

In particular, it can be seen that the compound belonging to the general formula (II/) has a remarkable effect of improving faithful color reproducibility. Especially emulsion (W)
It has been found that the effects of the compound of the present invention can be more effectively utilized in combination with an emulsion for a blue-sensitive layer prepared by adding a sensitizing dye during grain formation.

Patent Applicant: Fuji Photo Film Co., Ltd. The above results show that the addition of the compound of the present invention to the protective layer improves the ability to reproduce faithful colors regardless of the type of emulsion in the blue-sensitive layer. 1961 Patent Application No. 1r/Kota O Heat-developable color photosensitive material

Claims (1)

[Claims] A heat-developable color photosensitive material having a multilayer structure, characterized in that a blue-sensitive layer or a protective layer contains a compound that absorbs light with a wavelength of 410 nm or less.