JPS6397949A - Heat developable color photosensitive material having layer containing blue light absorptive dye improved in coefficient of molar absorption coefficient or the like - Google Patents

Abstract

PURPOSE:To obtain a color image which is free from fogging, staining or uneven density by providing a layer contg. a specific blue light absorptive dye between a blue sensitive layer and green sensitive layer or between the blue sensitive layer and red sensitive layer. CONSTITUTION:The layer contg. the blue light absorptive dye expressed by the formula is provided between the blue sensitive layer and the green sensitive layer or between the blue sensitive layer and the red sensitive layer. In the formula, X denotes the group of the atoms forming a 5- or 6-membered arom. carbon ring, etc., R<1>-R<3> respectively denote a hydrogen atom, halogen atom, alkyl group, etc. The blue absorptive dye expressed by the formula has the good molar absorption coefft. and cut on an absorption wavelength side. The content of the blue absorptive dye is thereby decreased if such dye is used for the blue light absorptive filter layer; in addition, the fogging, stain and uneven density of the transferred color image are improved and the improved color reproducibility is obtd. by the improved cut of the absorption wavelength on the long wavelength side.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a heat-developable color photosensitive material that forms a color image by transferring a diffusible dye formed by heat development, and particularly relates to a heat-developable color photosensitive material having a multilayer structure. The present invention relates to a heat-developable color light-sensitive material from which a heat-developable color diffusion transfer image can be obtained, which has a novel blue-light-absorbing dye-repelling layer.

[Prior art]

The conventionally known photographic method using photosensitive silver halide is superior to other photographic methods in terms of photosensitivity, gradation, image preservation, etc., and is the most widely put into practical use. It is.

However, since this method uses wet processing for processing steps such as development, fixing, and water washing, processing is time-consuming and labor-intensive, and there are concerns that the processing chemicals may affect the human body, or the processing room and work area may be affected. There are many problems, such as concerns about contamination of people by the chemicals mentioned above, and consideration of pollution caused by waste liquid. Therefore, it has been desired to develop a photosensitive material that uses photosensitive silver halide and can be dry processed.

Although many proposals have been made regarding dry processing photography, heat-developable photosensitive materials in which the developing step can be carried out by heat treatment are attracting attention as photosensitive materials that meet the above requirements.

Regarding such heat-developable photosensitive materials, for example,
This is described in Japanese Patent No. 4921 and No. 43-4924, and discloses a photosensitive material comprising an organic silver salt, silver halide, and a reducing agent.

Attempts have been made to improve such heat-developable photosensitive materials and obtain color images by various methods.

For example, U.S. Patent Nos. 3,531,286 and 3,7
No. 61,270 and fIS No. 3,764,328 disclose a heat-developable color photosensitive material in which a color image is formed by a reaction between an oxidized product of an aromatic primary VK amine developing agent and a cuff 2 color. ing.

Further, Research Disclosure No. 15108 and No. 15127 describe a heat-developable color in which a color image is formed by the reaction of a coupler with an oxidized form of a sulfonamide 7 ether or sulfonamide aniline derivative developing agent. A photosensitive material is disclosed. However, in these methods, a reduced silver image and a color image are simultaneously generated in the exposed area after thermal development, resulting in a problem that the color image becomes cloudy. To solve this problem, there is a method in which the silver image is removed by liquid processing, but only the dye is transferred to a liquid layer, for example, an image-receiving sheet having an image-receiving layer. The problem is that it is not easy to transfer only the dye.

In addition, in Research Disclosure No. 16966, an organic iminosilver salt having a pigment part is used, the imino group is liberated in the exposed part by heat development, and a color image is formed on the image-receiving layer as thermal photographic paper using a solvent. A heat-developable color photosensitive material is disclosed. However, with this method, it is difficult to suppress the reverse order of dyes in areas that are not exposed to light.
This has the problem that a clear color image cannot be obtained.

Also, JP-A-52-105821, JP-A No. 52-1058
No. 22, Publication No. 56-50328, U.S. Patent No. 4,
No. 235,957, Research Disclosure No. 14448, Research Disclosure No. 15227, Research Disclosure No. 18137, etc. disclose heat-developable color photosensitive materials in which a positive color image is formed by a heat-sensitive silver dye bleaching method. but,
This method requires extra steps and photographic construction materials, such as heating overlapping sheets containing activators to speed up bleaching of the dyes, and the resulting color images do not fade during long-term storage. It has the problem of being gradually reduced and bleached by coexisting free silver and the like.

Also, U.S. Patent Nos. 3,180,782 and 3,98
5,565 and 4,022,617!
Book a and Research Disclosure 12533
No. 1 discloses a heat-developable color photosensitive material that uses a leuco dye to form a color image. However, this method has the problem that it is difficult to stably incorporate the leuco dye into the photographic material, and the material gradually becomes colored during storage.

On the other hand, a method of releasing a diffusible dye by heat development using a reducing dye-donating substance and a reducing agent was disclosed in Japanese Patent Application Laid-Open No. 57-17.
No. 9840 and No. 57-198458. Furthermore, Japanese Patent Application Laid-Open No. 2003-101030 discloses a method in which a dye that is more diffusive than the coupling site is released from the coupling site by coupling an oxidized form of the developer instead of this reducing dye-providing substance to obtain a transferred image on the image-receiving layer. No. 57-186744, No. 57-
207250, and JP-A-58-149046 describes a method in which a dye is formed using an oxidized developer and a coupler, and the formed dye is transferred by heat.

These methods have been improved in various ways. For example, since the released dye is thermally transferred, there is no color turbidity caused by a silver image, and a color image can be obtained with simple repetition.

In particular -) 1, JP-A-58-149046, JP-A No. 59-
No. 124327, No. 59-181345 and Japanese Patent Application No. 58-109293, No. 59-35238, No. 5
No. 9-160860, No. 59-179657, No. 59
-181604, 59-182505, 59-
The method of thermally transferring a coloring dye using a colorless two-position coupler, as disclosed in No. 182506, does not require the inclusion of a colored color-providing substance in the heat-developable photosensitive layer, so that the photographic properties are not affected. 6 sensitivity is advantageous.

On the other hand, in general silver halide color photosensitive materials,
It is well known that the constituent layers have a multilayer structure. For example, a typical structure includes a panchromatic silver halide emulsion layer sensitive to red light on a support, in order from the support side; An ortho silver halide emulsion layer sensitive to green light is applied, followed by a regular silver halide emulsion layer sensitive to blue light as a top layer.

In the above-mentioned color light-sensitive materials, the panchromatic silver halide emulsion layer and the ortho silver halide emulsion layer are spectrally sensitized by using an optical sensitizer commonly called an enhancing dye. In addition to the spectrally sensitized IΔ, a so-called blue-sensitive silver halide emulsion layer called a regular layer having the inherent sensitivity of silver halide is provided.

In color photosensitive materials used in -a, +r+
As described in f, since the blue-sensitive silver halide emulsion layer is provided as the uppermost layer at the farthest position from the support, color turbidity occurs due to overlapping of the light spectra. Therefore, for example, in the case of negative light-sensitive materials, a blue light-absorbing filter layer is generally provided between the blue-sensitive silver halide emulsion layer and the green-sensitive silver halide emulsion layer to prevent the above-mentioned color clouding from occurring. are doing.

The single layer of the blue light absorbing filter may be, for example, a layer made of silver colloid with a particle size of about 0.01 to 0.05 μm, or a dye that flows out into the processing solution during development processing.
N or the like containing a dye is used.

Therefore, such a blue light absorbing filter layer needs to be present only when exposing and exposing the blank photosensitive material, and if it remains after the development process, it may cause unnecessary absorption. Unfavorable for color reproduction.

In this sense, the silver colloid layer is advantageous because it can be easily removed by bleaching and fixing steps after the development step in normal color negative development processing.

When considering a multilayer color structure in a heat-developable color photosensitive material such as the one according to the present invention, a single layer of the blue light-absorbing filter as described above is required, and the layer is placed on the side of the blue-sensitive milk M layer near the support. Preferably, a single layer of blue light absorbing filter is provided.

In this case, the order of arrangement of the green-sensitive layer and the red-sensitive layer is not necessarily constant, and the layers may be arranged in the opposite order. Alternatively, only the blue-sensitive layer may serve as a blue-light-absorbing color-providing substance, that is, a yellow dye-releasing substance, and a single layer of a blue-light absorbing filter.

However, in heat-developable photosensitive materials, it is not possible to use, for example, a silver colloid layer as used in the color negative photosensitive materials described above. This is because in the case of heat-developable photosensitive materials, silver colloids have properties as physical development nuclei, so they act as physical development nuclei in heat development, the reducing agent is oxidized, and the a-containing silver salt is Upon reduction, metallic silver is deposited on the colloidal silver. As a result, the oxidized form of the reducing agent diffuses into adjacent layers, causing undesirable color development, increasing capri and decreasing contrast.

Therefore, in heat-developable photosensitive materials, it is not preferable to use silver colloid/1 as a blue light absorbing filter layer, and there has been a desire to develop a suitable blue light absorbing compound.

As a technology that meets this technical issue, JP-A-60-20
No. 9734 and No. 61-159645 disclose heat-developable photosensitive materials having a layer containing a blue light absorbing dye. 3), and further improvements are desired.

(1) Since the molar extinction coefficient of the dye is small, it is necessary to add a large amount of blue light absorbing dye in order to absorb blue light.

(2) The long wavelength side of dye absorption is poorly cut.

(3) Addition of blue light absorbing dye causes unevenness in transferred color images.

[Purpose of the invention]

A first object of the present invention is to provide a novel blue light-absorbing dye with a large molar extinction coefficient that can be used in heat-developable color photosensitive materials.

A second object of the present invention is to provide a blue light-absorbing dye for heat-developable color light-sensitive materials that exhibits sharp absorption effects.

An object of tpJ3 of the present invention is to provide a heat-developable color photosensitive material capable of providing full-color images with less unevenness in capri, tint, or density.

[Structure of the invention]

As a result of intensive research to achieve the above object, the present inventors have found that the support has at least three layers containing a photosensitive silver halide, a dye-donating substance, and a V reducing agent, each of which is blue-sensitive. In a heat-developable color photosensitive material that is spectrally sensitized to green sensitivity or red sensitivity, the following general formula (1) is present between the blue-sensitive layer and the green-sensitive layer or between the blue-sensitive layer and the red-sensitive layer.
It has been found that the above object of the present invention can be achieved by a heat-developable color photosensitive material provided with a layer containing a blue light absorbing dye represented by:

In the formula, ), and R1 and R2 each represent a hydrogen atom, a halogen atom, an amino group, or 1
represents a valent organic group, R3 represents a hydrogen atom, an alkyl group or an aryl group, and a substituent on the ring represented by X, or at least one of R1, R2 and R3 is represented by general formula (1) It is a ballast group that can immobilize blue light absorbing dyes during thermal development.

[Specific structure of the invention]

In the above general formula (1), the aromatic carbocycle represented by X is preferably a benzene ring or a naphthalene ring,
As the aromatic ring, a pyridine ring is preferred.

The aromatic carbocycle and aromatic heterocycle represented by X may each have a substituent on the ring, and examples of the substituent include an alkyl group, an aryl group, an alkenyl group, a hydroxyl group, an alkoxy group, Aryloxy group, amino group, alkylamino group, dialkylamino group, arylamino group, acyl group, acyloxy group, acylamino group,
Alkoxycarbonyl group, carbamoyl group, Tl ff
a Rubamonol group, sulfamoyl group, substituted sulfamoyl group, ureido group, substituted ureido group, carboxyl group, sulfo group, sulfamoylamino group, alkylsulfonyl group, arylsulfonyl group, alkylsulfonylamino group, arylsulfonylamino group, hetero Examples include a cyclic group (for example, a 2,3-dioxopyrrolidin-1-yl group), a cyano group, a nitro group, and a halogen atom.

Halogen atoms represented by R1 and R2 include, for example, chlorine atoms and fluorine atoms, and -valent organic groups include alkyl groups (e.g. methyl group, ethyl group), carboxyl groups, alkoxycarbonyl groups (e.g. methoxycarbonyl group, ethoxy carbonyl group), carbamoyl group, substituted carbamoyl group, (e.g. phenylcarbamoyl group,
Preferred are methylcarbamoyl group), acylamino group (eg acetylamino group, benzoylamino group), alkylsulfonylamino group (eg methylsulfonylamino group) and cyano group.

Examples of the alkyl group represented by R' include a methyl group and an ethyl group, and examples of the aryl group include a phenyl group.

The substituents on the ring represented by At least one of the groups has the above general formula (1)
The balance that can immobilize the dye represented by 12+s during thermal development.

The ballast group has 8 or more carbon atoms (preferably 12 carbon atoms).
(above) groups and polymer residues are preferred.Hydrophilic groups (such as sulfo groups) are also preferred in the present invention.
The blue light absorbing dye-1 of the present invention, which can act as a ballast group that can be converted into r81J and has an organic group having 8 or more carbon atoms and a hydrophilic group, is preferable for immobile groups, χtesa et al.
Blue light-absorbing dyes of the invention having a polymer structure with hydrophilic groups are particularly preferred.

When W is a polymer residue, the dye represented by general formula (1) is a substituent on the ring represented by X″c,
Alternatively, the dye Q in which at least one of R1, R2 and R'' is an ethylenically unsaturated group (preferably a polymer dye having a repeating unit derived from the R-isomer).

In the present invention, the ethylenically unsaturated group is preferably a group represented by the following general formula (2).

General formula (2) In the formula, R1 represents a hydrogen atom, a carboxyl group, or an alkyl group (for example, a methyl group, an ethyl group $), and this alkyl group may have a substituent, and the substitution includes, for example, , a halogen atom (for example, a fluorine atom, a chlorine atom, etc.), a carboxyl group, and the like. The carboxyl group represented by RI and the carboxyl group of the substituent may form a salt.

J and J2 each represent a divalent bonding group, and examples of the divalent bonding group include -NHC(1-.

-CONL-, -COO-, -0CO-, -3CO-,
-(:OS-.

-o-, -s-, -5o-, -5o2-, etc. X,
and X2 each represent a divalent hydrocarbon group; examples of the divalent hydrocarbon group include an alkylene group, an arylene group, an aralkylene group, an alkylenearylene group, and an arylenealkylene group; examples of the alkylene group include: Examples of the arylene group include a phenylene group, examples of the aralkylene group include a phenylmethylene group, and examples of the alkylene arylene group include a methylene phenylene group. Examples of the arylene alkylene group include gp-, phenylene methylene group, and the like. k H111111112 and (to) 2 represent 0 or 1, respectively.

When the dye represented by general formula (1) of the present invention is a polymer dye, even if it is a so-called homopolymer of repeating units consisting of only one type of dye monomer, it may be represented by general formula (1). The copolymer may be a combination of two or more monomers, or may be a copolymer consisting of one or more copolymerizable copolymerizable ethylenically unsaturated groups.

Examples of the co-7mer having an ethylenically unsaturated group that can form a copolymer with the monomer represented by the general formula (1) of the present invention include acrylic esters, methacrylic esters, vinyl esters, olefins, Containing tyrenes, crotonate esters, itaconate diesters, maleate diesters, 7-malate noesters, acrylamides, allyl compounds, vinyl ethers, vinyl ketones, vinyl! Examples include 4-node ring compounds, glycytyl esters, unsaturated nitriles, polyfunctional polymers/mers, and various unsaturated acids.

To be more specific about these co/mers, the acrylic esters include methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, butyl acrylate, imbutyl acrylate), 5ec-butyl 7-acrylate, Lert- Butyl acrylate, amyl acrylate, hexyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, tert-octyl acrylate, 2-
Chloroethyl acrylate, 2-butimoethyl acrylate, 4-chlorobutyl acrylate, cyanoethyl acrylate, 2-acetoxyethyl acrylate, trimethylaminoethyl acrylate, 2-chlorocyclohexyl acrylate, cyclohexyl acrylate, furfuryl acrylate, tetrahydrofurfuryl Acrylate, phenyl acrylate, 5-hydroxypentyl acrylate, 2゜2-dimethyl-3-hydroxypropyl acrylate, 2-methoxyethyl acrylate, 3-methoxybutyl acrylate,
2-ethoxyethyl acrylate, 2-1so-propoxy acrylate, 2-butoxyethyl 7-acrylate,
2-(2-methoxyethoxy)ethyl acrylate, 2
-(2-butoxyethoxy)ethyl acrylate, ω-
Examples include methoxypolyethylene glycol acrylate (additional mole number l1 = 9) 1-bromo-2-methoxyethyl acrylate, 1,1-fuchloro-2-ethoxyethyl acrylate, and the like.

Examples of methacrylic acid esters include methyl methacrylate, ethyl methacrylate, pavyl methacrylate, isopropyl methacrylate, butyl methacrylate, inbutyl methacrylate), 5ec-butyl methacrylate, tert-butyl methacrylate, amyl methacrylate, hexyl methacrylate, and cyclohexyl. Methacrylate, bennor methacrylate, chlorobennor methacrylate, octyl methacrylate, sulfopropyl methacrylate, N-ethyl-N-phenylaminoethyl methacrylate, 2-(3-phenylpropyloxy)ethyl methacrylate, dimethylaminophenoxyethyl methacrylate, furfuryl methacrylate , tetrahydrofurfuryl methacrylate, phenyl methacrylate, cresyl methacrylate-1-, naphthyl methacrylate, 2-hydroxyethyl methacrylate, 4-hydroxybutyl methacrylate, triethylene glycol monomethacrylate, dipropylene glycol monomethacrylate, 2-methoxyethyl methacrylate, 3-methoxyethyl acrylate, 2-acetoxyethyl methacrylate, 2-ace) hair 1-xyethyl methacrylate, 2-ethyl-oxyethyl methacrylate, 2-iso-propoxyethyl methacrylate, 2-butoxyethyl methacrylate, 2-( 2-methoxyethoxy)ethyl methacrylate, 2-(2-ethoxyethoxy)ethyl methacrylate, 2-(2-butoxyethoxy)ethyl methacrylate, ω-methoxypolyethylene glycol methacrylate (additional mole number n=
6), allyl methacrylate, methacrylic acid trimethylaminoethyl methyl chloride salt, and the like.

Examples of vinyl esters include vinyl acetate, vinyl propionate, vinyl butyrate, vinyl imbutyrate, vinyl cafluoroate, vinyl aa acetate, vinyl methoxy acetate, vinyl phenylacetate, vinyl benzoate, vinyl salicylate, etc. Can be mentioned.

Examples of olefins include dicyclopentadiene, ethylene, propylene, 1-butene, 1-pentene,
Examples include vinyl chloride, vinylidene chloride, imprene, chloroprene, butanoene, 2,3-tmethylbutanoene, and the like.

Examples of styrenes include styrene, methylstyrene, dimethylstyrene, trimethylstyrene, ethylstyrene, isopropylstyrene, chloromethylstyrene, methoxystyrene, acetoxystyrene, chlorstyrene, dichlorostyrene, bromostyrene, vinyl?
Examples include breath W Nl methyl ester.

Examples of crotonate esters include butyl crotonate, hexyl crotonate, and the like.

Examples of itaconic diesters include diethyl itaconate, diethyl itaconate, and dibutyl itaconate.

Examples of the maleic acid diesters include diethyl maleate, dimethyl maleate, butyl maleate, and the like.

Examples of 7-malate noesters include diethyl 7-malate, trimethyl 7-malate, and dibutyl 7-malate.

Examples of other common heptamers include:

Acrylamides, such as acrylamide, methylacrylamide, ethylacrylamide, propylacrylamide, butylacrylamide, tert-butylacrylamide, cyclohexylacrylamide, benzylacrylamide, hydroxymethylacrylamide,
Methoxyethyl acrylamide, dimethylaminoethyl acrylamide, phenylacrylamide, dimethylacrylamide, diethylacrylamide, β-cyanoethylacrylamide, N-(2-7cetoacetoxyethyl)acrylamide, etc.; Methacrylamides, e.g. methacrylamide, methylmethacrylamide , ethyl methacrylamide, propyl methacrylamide, butyl methacrylamide, ter
t-butylmethacrylamide, cyclohexylmethacrylamide, bennormethacrylamide, hydroxymethylmethacrylamide, methoxyethylmethacrylamide, dimethylami7ethylmethacrylamide, phenylmethacrylamide, trimethylmethacrylamide, diethylmethacrylamide, β-cyanoethylmethacrylamide, N-(2-7ceto7cetoxyethyl)methacrylamide, etc.; Allyl compounds, such as allyl acetate, allyl caproate, allyl laurate, allyl benzoate, etc.; Vinyl ether Xff1M, such as methyl vinyl ether, butyl vinyl ether, hexyl vinyl ether, methoxyethyl Vinyl ether, dimethylamine 7-ethyl vinyl ether; Vinyl ketones, such as methyl vinyl ketone, phenyl vinyl ketone, methoxyethyl vinyl ketone; Vinyl heterocyclic compounds, such as vinyl pyridine, N-vinyl triazole, N-vinyl oxazolidone, N- Vinyltriazole, N-vinylpyrrolidone, etc.; Glycytyl esters, such as glycidyl acrylate, glycidyl methacrylate, etc.; Unsaturated nitriles, such as acrylonitrile, methacrylateryl, etc.; Polyfunctional moamers, such as novinylbenzene, methylene Bisacrylamide, ethylene glycol dimethacrylate, etc.

Additionally, acrylic acid, methacrylic acid, itaconic acid, maleic acid, hepta/alkyl itafunates, such as monomethyl itafunate, monoethyl itafunate, mo/butyl itaconate, etc.; mo/alkyl maleate, such as monomethyl maleate, maleic acid, etc. monoethyl acid, motuptil maleate, etc.; citraconic acid, styrene sulfonic acid, vinylbenzyl sulfonic acid, vinyl sulfonic acid, acryloyloxyalkylsulfonic acid, such as acryloyloxymethylsulfonic acid, acryloyloxyethylsulfonic acid, acryloyloxypropylsulfonic acid, etc. ;
Methacryloyloxyalkylsulfonic acids, such as methacryloyloxymethylsulfonic acid, methacryloyloxyethylsulfonic acid, methacryloyloxypropylsulfonic acid, etc.; Acrylamidoalkylsulfonic acids, such as 2-acrylamido-2-methylethanesulfonic acid, 2-acrylamido-2 -methylpropanesulfonic acid, 2-acrylamido-2-methylbutanesulfonic acid, etc.;/tacrylamide alkylsulfonic acid,
For example, 2-methacrylamido-2-methylethanesulfonic acid, 2-methacrylamido-2-methylpropanesulfonic acid, 2-methacrylamido-2-methylbutanesulfonic acid, etc.; acryloyloxyalkyl phosphates, such as acryloyloxyethyl phosphate,
3-acryloyloxypropyl-2-phosphate, etc.; tacryloyloxyalkyl phosphate, such as methacryloyloxyethyl phosphate, 3-methacryloyloxypropyl-2-phosphate, etc.
; Examples include sodium 3-7 lyloxy-2-hydroxypropanesulfonate having two hydrophilic groups. These acids may be salts of alkali metals (eg, Na, K, etc.) or ammonium ions. Further, other comonomers include U.S. Pat. No. 3,459,79
No. 0, No. 3,438,708, No. 3.554,9
No. 87, @4.215, 195, @4.247,
Crosslinking monomers described in JP-A No. 873, JP-A-57-205735, etc. can be used. Examples of such crosslinking monomers include N-(2-7
cetoacetoxyethyl) acryl 7mide, N-t2-(
Examples include 2-7cetoacetoxyethoxy)ethyl)acrylamide.

In addition, when forming a fuvolimer with the monomer represented by the general formula (1) of the present invention and the co-7mer, preferably the repeating unit consisting of the monomer represented by the general formula (1) is This is the case where it is contained in an amount of 10 to 90% by weight of the entire polymer, and more preferably 30 to 70% by weight.

Generally, polymers are polymerized by emulsion polymerization method or solution polymerization method, and the blue light absorbing dye polymer of the present invention having repeating units derived from the monomer represented by the general formula (1) according to the present invention is similarly polymerized. It can be polymerized by the following method. U.S. Pat. No. 4,080,211 for the emulsion polymerization method
No., ttS3,370,952, and the method described in U.S. Pat. No. 3,451,1320 for dispersing a lipophilic polymer in the form of a latex in an aqueous gelatin solution can be used. .

These methods can also be applied to the formation of homopolymers and fuvolimers; in the latter case, the comonomer is often a liquid co7mer, and in the case of 1.7L polymerization, it is normally a solvent for the immobilized It ffi form. It also acts as

Emulsifiers used in the emulsion polymerization method include surfactants, polymeric protective fluids, and copolymerization agents. L-chemical 1 is mentioned. Surfactants include 7-ionic surfactants, /ionic surfactants, cationic surfactants, and amphoteric surfactants known in the art.

Examples of anionic activators include soaps, sodium dodecylbenzenesulfonate, sodium lauryl C4Late, sodium dioctylsulfonesuccinate, sulfates of 7-ionic activators, and the like.

Examples of /ionic activators include polyoxyethylene 7-nylphenyl ether, polyoxyethylene stearate, polyoxyethylene sorbitan monolaurate, polyoxyethylene-polyoxybrobylene block copolymer, etc. . Further, examples of cationic active symmetry include alkylvinium salts, $3 amines, and the like.

Furthermore, examples of amphoteric active agents include trimethylalkylbetaines, furkylglycines, and the like. Examples of the polymeric protective colloid include polyvinyl alcohol and hydroxyethyl cellulose. These protective colloids may be used alone as emulsifiers or in combination with other surfactants. Depending on the type of these activators and their actions, Be1g1scl
+e Chemische Industry+ 2
8.16-20 (1963).

In order to disperse a lipophilic polymer synthesized by a solution polymerization method etc. in the form of latex in an aqueous gelatin solution, the lipophilic polymer is first dissolved in an organic solvent, and then it is dispersed into an aqueous gelatin solution with the help of milling. Then, it is dispersed into a latex form using ultrasonic waves, a colloid mill, etc. A method of dispersing lipophilic polymers in latex form in aqueous gelatin solutions is described in US Pat. No. 3,451,820. Examples of organic solvents that dissolve lipophilic polymers include esters such as methyl acetate, ethyl acetate, propyl acetate, etc., alcohols, ketones, halogenated hydrocarbons,
Ethers etc. can be used. Moreover, these organic solvents can be used alone or in combination of two or more.

In producing the blue light absorbing dye polymer according to the present invention, the solvent used for polymerization is preferably a good solvent for the monomers and the produced blue light absorbing dye polymer and has low reactivity with the polymerization initiator.

Specifically, water, toluene, alcohol (for example, meth 7
-ol, ethanol, 1so-propyl/-ol,
butanol, etc.), acetone, methyl ethyl ketone, tetrahydrofuran, dioxane, ethyl acetate, trimethylformamide, dimethyl sulfoxide, acetonitrile,
Examples include methylene chloride, and these solvents may be used alone or in combination of two or more.

The polymerization temperature must be determined depending on the type of polymerization initiator, the type of solvent used, etc., but is usually in the range of 30 to 120°C.

Examples of the polymerization initiator used in the emulsion polymerization method and solution polymerization method of the blue light absorbing dye polymer of the present invention include those shown below.

Examples of water-soluble polymerization initiators include persulfates such as potassium persulfate, ammonium persulfate, and sodium persulfate;
Sodium 4,4'-azobis-4-cyanovalerate, 2
, 2'-azobis(2-amidinopropane) hydrochloride and other water-soluble azo compounds, and hydrogen peroxide can be used.

In addition, examples of the lipophilic polymerization initiator used in the solution polymerization method include azobisisobutyronitrile, 2.2'-azobis(2-4-tumethylvaleronitrile), 2.2'
-Azobis(4-methoxy-2,4-trimethylvaleronitrile), 1.1' -Azobis(cyclohexane-1-carbonitrile L2.2' -7zobisiso7/
Butyric acid, 2.2'-7 methyl zobisisoacetate, 1.1'
-Azo compounds such as azobis(cyclohexanone-1-carbonitrile), 4.4'-7zobis-4-cyanovaleric acid, benzoyl peroxide, lauryl peroxide, chlorobenzyl peroxide, noisopropyl baroxydicarbonate, no Examples include peroxides such as butyl peroxide. Preferred among these include benzoyl peroxide, chlorobennol peroxide, lauryl peroxide, and the like.

These polymerization initiators can be contained in an amount of 0.01 to 10% by weight, preferably 0.1 to 5% by weight, based on the total amount of monomers in emulsion polymerization and solution polymerization.

Furthermore, polymerization methods other than those described above, such as suspension polymerization and bulk polymerization, can also be applied. That is,
In the present invention, a homopolymer of a monomer represented by the above general formula (1) of the present invention and having an ethylenically unsaturated group represented by the above general formula (2), a monomer 2a or more of the above monomer is used. It includes all copolymers formed by combining these monomers and at least 61 other polymerizable fumonomers as copolymerization components, and is not limited by the synthesis process.

Specific examples of the dye (coloring monomer and polymer dye in the case of a polymer dye) represented by general formula (1) of the present invention are shown below.

-1CI +IO H.O. Buddhist survey lII tatami billion YM-2 YM-4 YM-5 YM-6 YM-8 YM-10 COOCJ.

YM-11C)! .

Polymer dye color J monomer Como 7mer Composition ratio (dye monomer/comonomer) PY-I YM-I BA 3
/2PY-2YM-I BA, 5c-S03K
5/4/IPY-3YM-2BA 3/2P
Y -, tY M-2\lP 1/IPY
-5Y M -3E A 3/2PY
G YM 4 13A 2/3
PY-7YM 5 13A 3/2PY
-8YM-7BA 3/2PY-9YM-8
[3A 1/IPY-10YM-10BA,
5L-So, K 5/4/IPY-11, YM-11
I3A 3/2PY-12YM-12BA
3/2BA Nibutyl acrylate 5ISOJ: p-sulfostyrene potassium salt vP: Vinylpyrrolidone EA: Ethyl acrylate\-'/ The blue light absorbing dye of the present invention is generally synthesized by the following method.

1) In the case of polymer dyes ■ Synthesis of dye by diazo coupling reaction → introduction of ethylenically unsaturated group into dye → polymerization ■ introduction of ethylenically unsaturated group into coupler component → polymerization → formation of dye by diazo coupling Synthesis 2) Other than polymer dyes ■ Synthesis of dyes by diazo coupling reaction → Introduction of ballast group ■ Synthesis of coupler component having ballast group → Synthesis of dyes by diazo coupling Below, specific synthesis of the blue light absorbing dye of the present invention Give an example.

Synthesis Example-I Synthesis of Y-2 15 g of p-aminoacetanilide was dissolved in 170 mN of water containing 22 ml of concentrated hydrochloric acid, and nitrous acid (7,0
g) 30ml of aqueous solution was added dropwise and stirred for further 30 minutes to obtain a diazonium salt solution. 14 g of citradinic acid was dissolved in an aqueous solution of sodium hydroxide (14.3 g) and cooled to 10°C. The entire amount of the diazonium salt solution was added dropwise to this solution, and the mixture was further stirred at room temperature for 1 hour. In addition, the pH was adjusted to 3 to 4, and the precipitated yellow crystals were separated by P. The entire amount of the obtained yellow substance was added to an ethanolic hydrochloric acid solution, refluxed for 2 hours, and the reaction solution was neutralized with aqueous sodium hydroxide. The yellow solid obtained was separated from P, washed with water, and dried to obtain 13
．． 2. 4-carboxy-5-(p-aminophenylazo)-6-hydroxy-2-pyridone was obtained.

11 g of this solid and 13 g of octadecenyl succinic anhydride.
4 g was added to ethyl acetate, 0.1 mN of concentrated sulfuric acid was added, and the mixture was refluxed for 4 hours. Insoluble matter was separated from P, the P solution was concentrated to dryness, and the obtained solid was recrystallized from an ethyl acetate-ethanol mixture to obtain 13.2 g of the target product (Y-2).

Synthesis Example 2 Synthesis of PY-3 31.1 g of citradinic acid was added to a mixed solution of 300 acetonitrile and 30 aal of pyridine, and 40@1 propionyl chloride was added dropwise with stirring, followed by heating under reflux for 1 hour after the dropwise addition. This reaction solution was cooled, and the precipitated crystals were separated from P and 2,6-diprobionyloxyisonicotine rf12
6.8g was obtained. This total amount, dicyclocarbodiimide and p-acylaminoaniline were added to dioxane 200T8N.
and stirred at room temperature for 2 hours. Filter this reaction solution,
After concentrating the P solution, it was poured into water, stirred for a while under cooling, and the precipitated crystals were separated from the P to obtain 19.0 g of 2,6-dipropylonyloxy-4-N-(p-acetaminophenyl)carbamoylpyridine. .

2.6-dipropionyloxy-4-N-(p-acetaminophenyl)carbamoylpyridine 16. 100 nN of ethanol and 50 ml of water. 't14 Hydrochloric acid 2 Hydrochloric acid 2
The 0 reaction solution which was added to the 5 mixed solution and heated under reflux for 1 hour was once dissolved, but crystals were deposited again. This reaction solution was mixed with 15 (1
+g of water and neutralized with an aqueous sodium hydroxide solution.

The precipitated crystals were separated and recrystallized with methanol.2.
8.2 g of 6-cyhydroxy-4-N-(p-acetaminophenyl)carbamoylpyridine was obtained.

7.4 g of the obtained pyridine derivative was mixed with 10 g of acetonitrile.
In addition to the mixed solution of lysine 0@1 and lysine 10@1, 11 ml of methacrylic acid chloride was added dropwise while stirring under cooling.

After the dropwise addition, the reaction solution was stirred at room temperature for 10 hours, and 100 ml of 5
% of hydroxide), stirred for 1 hour, neutralized with dilute hydrochloric acid, and filtered off the precipitated crystals to obtain 6.3 g of 2,6-hydroxy-4-N (p-methacryloylamine/phenyl)carbamoylpyridine. I got it.

4 g of the above birinone intermediate and 4 g of butyl acrylate were dissolved in 40 ml of dimethylformamide solution heated to 80°C while passing nitrogen gas, 160n+t' of azobisisobutyronitrile was added, and reacted at 80°C for 2 hours.
Further, azobisisobutyronitrile 160-8 was added and the reaction was further carried out at 80°C for 2 hours to obtain a polymer reaction liquid A.

Separately, add 2.4 g of p-sulfoaniline to 2.5 mN of concentrated hydrochloric acid.
The mixture was cooled to 0 to 5°C, and while stirring, 20ml of water containing 1.0g of sodium nitrite was added dropwise. After one drop, the mixture was further stirred at 0°C for 30 minutes to obtain a diazo solution.

10 mj of 25% aqueous sodium hydroxide solution per mA of the polymer reaction! was added and cooled to 10°C. The diazo solution obtained above was added dropwise to this solution, and after the dropwise addition, the solution was stirred at room temperature for 1 hour, neutralized by adding diluted hydrochloric acid, and poured into 200 ml of water, and the precipitated solid was filtered off.

After washing this solid with ethanol, it was further dispersed in ethyl acetate, heated under reflux for 30 minutes, and then filtered to obtain 9.4 g of the desired product.

The pond compound can also be synthesized in a similar manner.

The blue light absorbing dyes of the present invention may be used alone or in combination of two or more. The amount used is not limited, and the type of dye, single use, or 2f! It may be determined depending on whether the above-mentioned materials are used in combination, but for example, the amount of the support 11
0.01g to 10g per 112, preferably 0.0
4-1.5g can be used.

Dye-donor substances that can be used in the present invention include those that participate in the reduction reaction of the photosensitive silver halide and/or the organic silver salt used as necessary, and form or release a diffusible dye as a function of the reaction. Depending on the reaction mode, it may be a negative type dye-donor that acts on a positive function (that is, it forms a negative dye image when negative type silver halide is used). It can be classified as a positive dye donor that acts on a negative function (ie, forms a positive dye image when negative silver halide is used). Negative dye-donating substances are further classified as follows.

Each dye-providing substance will be further explained.

As the reducing dye releasing compound, for example, general formula (3)
Examples include compounds represented by:

General formula (3) % formula % In the formula, Car is a reducing substrate (so-called carrier) that is oxidized and releases a dye upon reduction of the photosensitive silver halide and/or the organic silver salt used as necessary. , Y is a diffusible dye residue.

Specific examples of the above-mentioned reducing dye-releasing compounds include JP-A-57-179840, JP-A-58-116537, and JP-A No. 58-116537.
No. 9-60434, No. 59-65839, No. 59-7
1046, No. 59-87450, No. 59-88730
No. 59-123837, No. 59-165054, No. 59-165055, etc.

As another reducing dye releasing compound, for example, general formula (4)
Examples include compounds represented by:

^2 In the formula, A + and A 2 each represent a hydrogen atom, a hydroxy group, or an amino group, and Y is Y shown in formula (3).
is synonymous with Specific examples of the above compounds are JP-A-59-1
No. 24329.

As the coupled dye-releasing compound, -i formula (5)
Examples include compounds represented by:

General formula (5) % formula % (in the formula, Cpl is an organic group (so-called coupler residue) that can react with the oxidized form of the reducing agent to release a diffusible dye
, J is a divalent bonding group, and the bond between Cpl and J is cleaved by reaction with the oxidized product of the reducing agent. n represents O or 1, and Y has the same meaning as defined in general formula (3). In addition, Cpl is preferably substituted with various ballast groups in order to make the coupled dye-releasing compound non-diffusible, and the ballast group has 8 or more carbon atoms ( more preferably 12 or more) organic groups or hydrophilic groups such as sulfo groups and carboxy groups, or 8 or more (more preferably 12 or more) carbon atoms and hydrophilic groups such as sulfo groups and carboxy groups together. It is a group that has Another particularly preferred ballast group can include polymer chains.

Specific examples of the compound represented by the above general formula (5) include JP-A-57-186744 and JP-A-57-122596.
No. 57-160689, No. 59-174834, No. 57-224883, No. 59-159159,
They are described in various specifications of Japanese Patent Application No. 59-104901, and include, for example, the following compounds.

Exemplary dye-donor coupling dye-forming compounds include compounds represented by the general formula (6).

General formula (6) % formula %) In the formula, C112 is an organic group (coupling reaction) that can react with the oxidized form of the reducing agent to form a diffusible dye.
(so-called coupler residues), where X represents a divalent bonding group and Q represents a ballast group. The coupler residue represented by C11z preferably has a molecular weight of 700 or less, more preferably 5
00 or less. In addition, the ballast group is preferably the same as the ballast group defined in general formula (5), particularly 8
A group having at least 12 carbon atoms (more preferably 12 or more) and a hydrophilic group such as a sulfo group or a carboxy group is preferred, and a polymer chain is more preferred.

The coupling dye-forming compound having a polymer chain is preferably a polymer having a repeating unit derived from a monomer represented by general formula (7).

General formula (7) % formula %) where cp2. X has the same meaning as defined in general formula (6), X4 represents an alkylene group, arylene group, or aralkylene group, or represents a divalent organic group, and L
represents an ethylenically unsaturated group or a group having an ethylenically unsaturated group.

Specific examples of coupling dye-forming compounds represented by general formulas (6) and (7) include JP-A-59-12433
No. 9, No. 59-181345, patent application No. 58-1092
No. 93, No. 59-179657, No. 59-18160
No. 4, No. 59-182506, No. 59-182507
For example, the following compounds are mentioned.

Margin below Exemplary dye-donor substances ■　Self, I+, 5 polymer ■ rll.

■ CHl Grave Off x: 60 weight meeting y: 4
0 weight negative■ C1゜(.

stomach @ Cll.

In the above general formulas (5), (6) and (7), Cpl
Or, to explain in more detail the coupler residue defined by C92, groups represented by the following general formulas (8) to (17) are preferable.

General formula (8) General formula (9) General formula (
10) For general formula) ■ s General formula (12) General formula (13) General formula (14) General formula (15)
General formula (16) General formula (17
), where R2, R2, R2, and R21 are each a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an aryl group, an acyl group, an alkyloxycarbonyl group, an aryloxycarbonyl group, an alkylsulfonyl group, or an aryl group. Sulfonyl group, carbamoyl group, sulfamoyl group, acyloxy group, amino group, alkoxy group,
It represents an aryloxy group, a cyano group, a ureido group, an alkylthio group, an arylthio group, a carboxyl group, a sulfo group, or a heterocyclic residue, which can further be a hydroxyl group, a carboxyl group, a sulfo group, an alkoxy group, a cyano group, a nitro group, an alkyl group. may be substituted with a group, an aryl group, an aryloxy group, an acyloxy group, an acyl group, a sulfamoyl group, a carbamoyl group, an imide group, a halogen atom, or the like.

These substitutions are selected depending on the purpose of C9+ and C112, and as described above, in <Cp+, one of the substituents is preferably a ballast group, and in C92, one of the substituents is preferably a ballast group in order to increase the diffusibility of the dye formed. Preferably, the substituents are selected so that the molecular weight is 700 or less, more preferably 500 or less.

As a positive dye-donating substance, for example, the following general formula (18
) There is an oxidizable dye-releasing compound represented by:

General formula (18) In the formula, Wl represents a collection of atoms necessary to form a quinone ring (which may have a substituent on this ring), and R
2 represents an alkyl group or a hydrogen atom, E represents R1゜-N-C (represents R,, + elemental atom or -N-) or -SO□-, "represents 0 or 1, Y has the same meaning as defined in general formula (3).Specific examples of this compound are given in JP-A-59-
It is described in specifications such as No. 166954 and No. 59-154445.

As another positive dye-donor substance, the following general formula (19) is used.
There are compounds that lose their dye-releasing ability when oxidized, such as the compound represented by:

General formula (19) In the formula, W2 represents a collection of atoms necessary to form a benzene ring (which may have a substituent on the ring), and Rz
*, E, and Y have the same meanings as defined in general formula (18). A specific example of this compound is JP-A No. 59-124329.
No. 59-154445.

Further, as another positive dye-providing substance, the following general formula (2
Examples include compounds represented by 2).

General formula (20) In the above formula, W2. R2,, Y have the same meaning as defined in general formula (19). Specific examples of this compound are described in Vf Patent Publication No. 59-154445.

General formulas (3), (4), (5), (18), (1
The residue of the diffusible dye represented by Y in 9) and (20) will be explained in further detail. The residue of the diffusible dye preferably has a molecular weight of 800 or less, more preferably 600 or less for the sake of dye diffusivity, and includes azo dyes, azomethine dyes, anthraquino di-dyes, naphthoquinone dyes,
Examples include residues such as styryl dyes, nitro dyes, kino92 dyes, carbonyl dyes, and 7-talocyanine dyes. These dye residues may be in a temporary short-waveform form that allows multiple colors during thermal development or transfer. In addition, these dye residues are used for the purpose of increasing the light resistance of images, for example, in Japanese Patent Laid-Open No. 59-48.
This is a preferred form of the chelatable dye residues described in No. 765 and No. 59-124337.

These dye-providing substances may be used alone or in combination of two or more. The amount used is not limited and depends on the type of dye-providing substance, whether it is used alone or in combination of 21 or more, and whether the photographic constituent layer of the light-sensitive material of the present invention is a single layer or a multilayer of two or more layers. For example, the usage amount is 0,005. ~50g 1 preferably 0.1g ~ 10g can be used.

The dye-providing substance used in the present invention can be incorporated into the photographic constituent layer of the heat-developable color light-sensitive material by any method, such as a low boiling point solvent (methanol, ethanol, ethyl acetate, etc.) or a high boiling point solvent! After dissolving in mineral acids (such as diptyl 7 tallate, dioctyl 7 tallate, triphrenor phosphate, etc.) and dispersing them with long sonic waves, or in alkaline aqueous solutions (for example, 10% aqueous solution of IJium hydroxide, etc.), mineral acids ( For example, use it by neutralizing it with hydrochloric acid or nitric acid
It can be used after being dispersed with gelatin, polyvinyl butyral, polyvinyl pyrrolidone, etc.) using a ball mill.

The photosensitive silver halide used in the present invention includes silver chloride, silver bromide, silver iodide, silver chlorobromide, silver chloroiodide, silver iodobromide,
Examples include silver chloroiodobromide. The photosensitive silver halide is
Although it can be prepared by any method in the photographic field such as a single noet method or a double jet method, in the present invention, a photosensitive silver halide gelatin emulsion prepared according to a conventional method for preparing a silver halide gelatin emulsion is used. A light-sensitive silver halide emulsion containing .

The photosensitive silver halide emulsion is widely used in the field of photography,
It may also be chemically sensitized by the method described below. Examples of the dark sensitization method include various methods such as gold sensitization, sulfur sensitization, gold-sulfur sensitization, and reduction sensitization.

The silver halide in the above-mentioned photosensitive emulsion may be coarse or fine, but the preferred grain size is about 0.001 μm to about 1.5 μm, more preferably about 0.001 μm to about 1.5 μm, and more preferably about 0.001 μm to about 1.5 μm. .01μ--about 0.5μI.

The photosensitive silver halide emulsion prepared as described above can most preferably be applied to the heat-developable photosensitive layer which is a constituent layer of the photosensitive material of the present invention.

These photosensitive silver halides and photosensitive silver salt-forming components can be used in combination in various methods, and the amount used is preferably o,ootg to 50g per layer of 1a+2, more preferably, It is 0.1 g to 10 g.

The heat-developable color photosensitive material of the present invention comprises layers sensitive to blue light, green light, and red light, namely, a heat-developable blue-sensitive layer, a heat-developable green-sensitive layer, and a heat-developable green-sensitive layer. 2N
It is also possible to provide the layer divided into the above layers (for example, a high-sensitivity layer and a low-sensitivity layer).

In the above cases, the blue-sensitive silver halide emulsion, the green-sensitive silver halide emulsion, and the red-sensitive silver halide emulsion WL7M are those in which various spectral sensitizing dyes are added to the silver halide emulsion. It can be obtained by adding

Typical spectral sensitizing dyes used in the present invention include, for example, cyanine, merocyanine, complex (trinuclear or tetranuclear) cyanine, holobo-5-cyanine, styryl, hemicyanine, oxol-7-ol, and the like.

The amount of these dyes added is 1.times.10@-'' mole-1 mole per mole of silver halide or silver halide-forming component.

More preferably, it is 1X10-' mol to 1×1O-1 mol.

In the heat-developable color photosensitive material of the present invention, various types of materials may be used to increase sensitivity and improve developability, if necessary.
You can use silver salt.

8! Used in the heat-developable color photosensitive material of the present invention! As silver salts, Japanese Patent Publication No. 43-4921, No. 44-2658
No. 2, No. 45-IF3416, No. 45-12700, No. 45-22185, #, tf111 1984-52
No. 626, No. 52-31728, No. 52-1:173
No. 21, No. 52-141222, No. 53-36224
No. 53-:'171310, and U.S. Patent No. 3,330,633, U.S. Patent No. 3,794,
No. 496, No. 4,105,451, No. 4,123
Silver salts of aliphatic carboxylic acids as described in any of No. 4,168,980, etc., such as 1r silver laurate, silver myristate, silver palmitate, stearin silver acid, silver arachidonic acid, silver behenate, silver α-(1-phenyltetrazolethio)acetate, etc.
Silver aromatic carboxylates, such as silver benzoate, silver heptalate, Japanese Patent Publication No. 44-26582, No. 45-12700
No. 45-18416, No. 45-22185, JP-A-52-31728, [1go No. 52-137321, JP-A No. 58-118638, JP-A No. 58-11863
Silver salts of imino groups as described in publications such as No. 9, such as silver benzotriazole, silver 5-nitrobenzotriazole, silver 5-chlorobenzotriazole, silver 5-methoxybenzotriazole, and silver 4-sulfobenzotriazole. silver, 4-hydroxybenzotriazole silver, 5-
7/benzotriazole silver, 5-carboxybenzotriazole silver, imidazole silver, benzimidazole silver, 6-nitrobenX imidazole silver, pyrazole silver, urazole silver, 1.2.4-triazole silver, 111-tetrazole silver, 3-ami7-5-bennorthio-1,2
゜4-Triazole silver, saccharin silver, 7-talanonon silver, butarimide silver, etc., 2-mercaptobenzoxazole silver, mercaptooxanoazole silver, 2-mercaptobenzothi7zole silver, 2-flucaptobenzimidazole silver, 3-mercapto-4-phenyl-1,2
, 4-) Riazole silver, 4-hydroxy-6-methyl-
Examples include silver 1,3,3m,7-chitrazaindene and 5-methyl-7-hydroxy-1,2,3,4,6-pentazaindene silver. Among the silver salts mentioned above, imino group silver salts are preferred, and benzotriazole derivative silver salts are particularly preferred.

The organic silver salts used in the present invention may be used alone or in combination of two or more, and the isolated ones may be used by dispersing them in a paint solution by an appropriate means, or they may be used in a suitable manner. The silver salt may be prepared in Bangu and used as is without isolation.

The amount of the organic silver salt used is preferably 0.01 to 500 mol, more preferably 0.1 to 100 mol, per 1 mol of photosensitive silver halide.

As the reduction treatment used in the heat-developable color photosensitive material of the present invention, those commonly used in the field of heat-developable color photosensitive materials can be used, for example, U.S. Pat. No. 3,531,288
No. 6, No. 3,761,270, No. 3,764.3
No. 28, each description II 3, and Research Disclosure No. 12146, No. 15108, No. 1512
No. 7 and JP-A No. 56-27132! p-phenylenenoamine type and l/p-7mi77enol type developing agents described in 11 etc.; Can be mentioned. Also, U.S. Patent No. 3゜342.599, U.S. Patent No. 3,719,492%, '+¥
[The color developing agent precursors described in Sho 53-135628, Sho 54-79035, etc. can also be advantageously used.

As a particularly preferable reducing agent, JP-A-56-148133
N-1p-(N,N-dialkylamino)phenyl)sulfamate described in No.

These reducing agents can be used singly or in combination of two or more. The amount of the reducing agent to be used depends on the type of photosensitive silver halide, the type of organic acid silver salt, and the type of other additives used, but it is usually 0.0000000000 for 11 moles of photosensitive silver halide ff. The amount ranges from 0.01 to 1500 mol, preferably from 0.1 to 200 mol.

Binders used in the heat-developable color photosensitive material of the present invention include synthetic or natural binders such as polyvinyl butyral, polyvinyl acetate, ethyl cellulose, polymethyl methacrylate, cellulose acetate butyrate, polyvinyl alcohol, polyvinyl pyrrolidone, gelatin, and heptadated gelatin. One or more of these polymeric substances can be used in combination. It is preferable to use gelatin or a derivative thereof in combination with a wood-loving polymer such as polyvinylpyrrolidone or polyvinyl alcohol, and more preferably to use gelatin and polyvinylpyrrolidone (vinylpyrrolidone and other It is a mixed binder with a copolymer of moamer, etc.).

The amount of banhgu used is usually 0.058 to 50[1] per 1a+2 per layer, preferably 0.18 to 1
It is 08. In addition, the binder is a dye-donating substance moiety/
It is preferable to use 0.1 g to 10 g per 1 g of Mar+B, and more preferably 0.25 to 4 g per gram.

Supports used in the heat-developable color photosensitive material of the present invention include, for example, polyethylene film, cellulose acetate film, polyethylene terephthalate film, synthetic plastic films such as polyvinyl chloride, and photographic base paper, printing paper, baryta paper, and Lennon coated paper. Examples include paper supports such as #, and supports prepared by providing the above-mentioned synthetic plastic film with a reflective layer.

The heat-developable photosensitive material of the present invention, furthermore, the photosensitive material
When using an image receiving member in 1, it is preferable that various heat solvents are added to the photothermographic material and/or the image receiving member. The thermal solvent used in the present invention is a compound that promotes thermal development and/or thermal transfer. Regarding these compounds, for example, U.S. Pat. No. 3,347,675, U.S. Pat.
-229556, 59-68730, 59-8
No. 4236, No. 60-191251, No. 60-232
No. 547, No. 60-14241, No. 61-52643
No., Patent Application No. 60-218768, No. 60-18196
No. 5, No. 60-184637, U.S. Patent No. 3,438
, No. 776, No. 3,666, = No. i77, No. 3,667
．． No. 959, Japanese Unexamined Patent Publication No. 51/19525, No. 53-24
No. 829, No. 53-60223, No. 58-11864
Examples of organic compounds having polarity such as those described in No. 0 and No. 58-198038 include urea derivatives (for example, urea derivatives (e.g., trimethylurea, trimethylurea, phenylurea, etc.), amides, etc. Derivatives (e.g. acetamide, benzamide, p-)
ruamide, ρ-butoxybenzamide, etc.), sulfone 7
amide derivatives (e.g. benzenesulfonamide, α-toluenesulfonamide, etc.), polyhydric alcohols (e.g. 1,5-pentanol, 1,6-hexanediol, 1,2-cyclohexanediol, pentaerythritol, methylolethane, etc.) or polyethylene glycols.

In the above-mentioned heat agent 8, water-insoluble solid heat solvents described below are more preferably used.

Water-insoluble solid heat-soluble M is a compound that is solid at room temperature but becomes liquid at high temperatures (SO°C or higher, preferably 100°C or higher, particularly preferably 130°C or higher and 250°C or lower), and is an inorganic/organic Sex ratio ("Yoshio 8! Conceptual Diagram", Yoshio Koda, Sanki Publishing (redacted), 1984) is 0.5 to 3, O, preferably 0.7 to 2.5, particularly preferably 1.0 to 2. ,0
It is a compound within the range of .

Specific examples of the above-mentioned water-insoluble heat-melting compounds are described in, for example, Japanese Patent Application No. 60-278331 and No. 60-280824.

The heat solvent is added to a photosensitive silver halide emulsion layer, an intermediate layer, a protective layer, an image receiving layer of an image receiving section rod, etc. so as to obtain the respective effects.

The amount of heat solvent added is usually 10% to 50% by weight of the amount of bangu.
0 weight % 1 preferably 30 weight 1 % to 20 weight % (1 weight %).

In addition to the above-mentioned components, various additives may be added to the heat-developable color photosensitive material of the present invention as required.For example, as a development accelerator, U.S. Pat.
No. 3,531,285, No. 4,012,26
No. 0, No. 4,060,420, No. 4,088,4
No. 96, No. 4 207.392, Research Disclosure No. +5733, No. 157
34, No. 15776, JP-A-56-130745
Alkali releasing agents such as urea and guanidium trichloroacetate described in Japanese Patent Publication No. 1970-12700, US Patent No. 3.
Non-aqueous polar solvent compound having -co-, -so□-1-80- group described in No. 667.959, US Pat. No. 3,4
38°776 Meltformer-1 U.S. Patent No. 3
, 688° 477, and the polyalkylene glycols described in JP-A-51-19525. In addition, as a color toning agent, for example, JP-A No. 46-4928, JP-A No. 46-60
No. 77, No. 49-5019, No. 49-5020, No. 49-91215, No. 49-107727, No. 50-2524, No. 50-67132, No. 50-876
No. 41, No. 50-114217, No. 52-33722
No. 52-99813, No. 53-1<120, No. 53-55115, No. 53-76020, No. 53-
No. 125014, No. 54-156523, No. 54-1
No. 56524, No. 54-156525, No. 54-15
Publications such as No. 6526, No. 55-4060, No. 55-4061, No. 55-32015, and West German Patent No. 2
, No. 140,406, No. 2.147,063, No. 2
, 220,618, U.S. Patent No. 3,080,254, U.S. Patent No. 3.847,612, U.S. Patent No. 13,782,941
No., pJ3,994,732, pJ3,994,732, pJ4.123.
282, 4゜201.582 and other specifications, such as 7-talazine, 7-talimide, pyrazolone, quinashirin-7, N-hydroxynaphthalimide, benzoxanone, and naphthoxane. non-geon,
2゜3-nohydro-7-talanone, 2,3-dihydro-1,3-oxazine-2,4-dione, oxyvirinone, ami/bilinone, human mixiquinoline, ami7qui7line, incarbostyryl, sulfonamide, 2+1
-1.3-benzothianone-2,4-(31()dione, benzotriazine, mercaptotriazole, simmercaptotetrazabentalene, heptalic acid, na7talic acid, phthalamic acid, etc.), and one of these or , or more, and a sulfur-containing compound, and also at least one acid or acid anhydride such as 7-talanic acid, na-7-talic acid, and 7-talanone compounds, and also 7-talanone and maleic, itaconic, chimeric acids. , dentisic acid, etc.Also, 3-amino-5-mercapto-1,2,4-) lyazole described in JP-A-58-189628 and JP-A-58-193460 can be mentioned. Class, 3
-acylami/-5-mercapto-1,2,4-) lyazoles are also effective. Further, as anti-fogging valves, for example, Japanese Patent Publication Nos. 11113-1982, 90118-1980, 10724-1972, 49-
No. 97613, No. 50-101019, No. 49-13
No. 0720, No. 50-123331, No. 51-474
No. 19, No. 51-57435, No. 51-78227, No. 51-104338, No. 53-19825, No. 53-20923, No. 51-50725, No. 53-
No. 3223, No. 51-42529, No. 51-8112
Publications such as No. 4, No. 54-51821, No. 55-93149, as well as British Patent No. 1,455,271, U.S. Patent No. 3,885,968, and No. 3,700,45
7, No. 4,137,079, No. f@4,138゜265, West German Patent No. 2,617,907, etc. Oxide 7'1II (e.g., N-halodenoacetamide, N
-halogenosuccinimide, perchloric acid and its salts,
(free peroxides, persulfates, etc.), or acids and their salts (e.g., sulfinic acid, lithium laurate, lonone, diterpene acid, thiosulfonic acid, etc.), or sulfur-containing compounds (e.g., mercapto compound-releasing compounds) , thiouracil, disulfide, simple sulfur, mercapto-
1,2,4-) lyazole, thiazolinthion, polysulfide compound, etc.), others, oxazoline, 1.2.
Examples include compounds such as 4-triazole and 7-talimide. Furthermore, as another antifoggant, JP-A-59-11
Thiol (preferably thio7271 compound) compounds described in No. 1636 are also effective.

Other antifoggants include JP-A-6O-198
540J? It is preferable to use the hydroquinone derivative described in I- or the combined use of the hydroquinone derivative and benzotriazole derivative described in W 60-227255.

Still other particularly preferred anti-capri resists include the inhibitor having a hydrophilic group described in Japanese Patent Application No. 60-218169, the polymer inhibitor described in Japanese Patent Application No. 60-262177, and the Examples include the inhibitor compound having a ballast group described in No. 60-263564.

Furthermore, a pure or grown base or base precursor can be added.

In addition to the above-mentioned components, the heat-developable color photosensitive material of the present invention may further include various components such as a spectral sensitizer, an antihalation dye, a fluorescent brightener, a hardener, an antistatic agent, a plasticizer, and a spreading agent. Additives, coating aids, etc. are added.

In the heat-developable color photosensitive material of the present invention, basically one photosensitive layer contains (1) photosensitive silver halide, (2)
Contains a reducing agent, (3) a dye-donating substance, (4) a binder, and optionally (5) an organic silver salt, and has at least three photosensitive layers, each having blue sensitivity and green sensitivity. , is spectrally sensitized to red sensitivity. A layer containing the blue light-absorbing dye of the present invention is provided between the blue-sensitive layer and the green-sensitive layer, or between the blue-sensitive layer and the red-sensitive layer.

Furthermore, the arrangement of the blue-sensitive layer, the layer containing a blue light-absorbing dye, and the other light-sensitive layers (green-sensitive layer and red-sensitive M) is as follows: blue-sensitive J-, blue-light-absorbing dye It consists of a layer containing an absorbing dye and another photosensitive layer (here, the order of the green-sensitive layer and the red-sensitive layer can be either order). Here, each of the photosensitive layers does not necessarily need to contain the components (1) to (5) above in a single photographic constituent layer; for example, the photosensitive layer may be divided into two layers, The components (2), (4), and <5) are contained in one side of the photosensitive layer, and the dye-donating substance (3) is contained in the other side of the layer adjacent to this photosensitive layer, so that they react with each other. If possible, it may be contained separately in two or more photographic constituent layers.

Further, the photosensitive layer may be divided into two or more layers, such as a high-sensitivity layer and a low-sensitivity layer, and may further include one or more other photosensitive layers having different melancholic properties. It may also have various photographic constituent layers such as an overcoat layer, an undercoat layer, a backing layer, and an intermediate layer.

The layer containing the blue-absorbing dye represented by the general formula (1) of the present invention may form a layer by itself as long as the dye has film-forming properties, and if necessary, the dye may be included in a binder. The layer may be dispersed in any form, and the form may be arbitrary.

The heat-developable photosensitive layer of the present invention, the blue-absorbing dye-containing layer, the protective layer,
Intermediate layers, undercoat layers, back layers, and other photographic constituent layers are prepared by preparing respective coating solutions and applying the dipping method, air knife method, curtain coating method, or hopper coating described in U.S. Pat. No. 3,681,294. Photosensitive materials can be produced by various coating methods such as the method.

Furthermore, if desired, two or more layers can be applied simultaneously by the methods described in US Pat. No. 2,761,791 and British Patent No. 837,095.

The above-mentioned components used in the photographic constituent layers of the heat-developable color light-sensitive material of the present invention are coated on a support, and the coating thickness is as follows:
The thickness after drying is preferably 1 to 1,000 μm, more preferably 3 to 20 μm.

After the heat-developable color photosensitive material of the present invention is subjected to imagewise exposure as it is, it is usually 80°C to 200°C, preferably 120°C.
Color development can be carried out by simply heating in a temperature range of 170 DEG C. for 180 seconds, preferably 1.5 seconds to 120 seconds. In addition, if necessary, it may be developed with a water-impermeable material in close contact with it, or it may be heated at 70°C to 18°C before exposure.
Preheating may be performed in a temperature range of 0°C.

Various exposure means can be used for the heat-developable color photosensitive material according to the present invention. The latent image is obtained by imagewise exposure to radiation, including visible light. Light sources commonly used for regular color printing, such as tungsten lamps,
A mercury lamp, a xenon lamp, a laser light source, a CRT beam, etc. can be used as the light source.

As the heating means, all methods applicable to ordinary heat-developable photosensitive materials can be used, such as contacting with a heated block or plate, contacting with a heated roller or drum, passing through a high-temperature atmosphere, etc. Alternatively, it is also possible to use high frequency heating, or furthermore, to provide a conductive layer in the photosensitive material of the present invention or in the image receiving/1 (element) for thermal transfer, and to utilize Noyule heat generated by electricity or a strong magnetic field.

The heating pattern is not limited to waiting, but includes preheating (breheating) and then reheating, heating at a high temperature for a short time, or at a low temperature for a long time, continuously increasing, decreasing, or repeating, and even Although discontinuous heating is possible, a simple pattern is preferred. Alternatively, a method in which exposure and heating proceed simultaneously may be used.

The image receiving member used in the present invention only needs to have the function of receiving the dye released or formed during thermal development, and may be used as a mordant used in dye diffusion transfer type light-sensitive materials or
The glass transition temperature described in No. 207250 etc. is 40℃
As mentioned above, it is preferable to form the heat-resistant organic polymer material at 250° C. or lower.

Specific examples of the mordants include nitrogen-containing secondary and tertiary amines, nitrogen-containing heterocyclic compounds, quaternary cationic compounds thereof, U.S. Pat. Nos. 2,548,564 and 2,48
No. 4,430, No. 3,148.081, No. 3,756
, 814, and vinylpyridinium cationic polymers disclosed in U.S. Pat.
No. 2.675,316, polymers containing noalkylamino groups, 7minog7ninone derivatives, Vfgi4, as disclosed in U.S. Pat.
Covalent reactive polymers described in US Pat. No. 3,625,694 and US Pat. No. 3,85
No. 9,096, Fukokumachi J1 No. 1.277.453, Mordant capable of crosslinking with gelatin etc. disclosed in No. 2,011,012, U.S. Patent fIS 3,958,995
Aqueous sol type mordant E disclosed in No. 2,721,852 and No. 2,798,063, JP-A-50-61
228; Water-insoluble mordant disclosed by Kawako, U.S. Pat. No. 3.78.855, West German Patent Application (OLS) No. 2,
No. 843゜32'O, JP-A No. 53-30328, No. 5
No. 2-155528, No. 53-125, No. 53-10
No. 24, No. 54-74430, No. 54-124726
No. 55-22766, U.S. Patent No. 3,642,4
No. 82, No. 3.488.70f3, No. 3,557,0
No. 66, No. 3,271,147, No. 3,271,14
No. 8, Special Publication No. 55-29418, No. 5B-36414
No. 57-12139, RD 12045 (19
Examples include various mordants disclosed in 1974).

Particularly useful mordants are polymers containing ammonium salts,
It is a polymer containing 7 quaternary amide groups as described in US Pat. No. 3,709,690.

A typical image-receiving layer for dye diffusion printing is obtained by coating a polymer containing an ammonium salt mixed with gelatin on a support.

Examples of the heat-resistant organic polymer substances include polystyrene, polystyrene derivatives having a substituent having 4 or less carbon atoms, polyvinylcyclohexane, polyvinylbenzene, polyvinylpyrrolidone, polyvinylcarbazole, polyallylbenzene, polyvinyl alcohol, polyvinyl formal, and polyvinyl. polyacetals such as butyral,
Polyvinyl chloride, chlorinated polyethylene, polytrichloride pentatylene, polyacrylonitrile, poly N, N-trimethylacrylamide, p-cya/phenyl group, pentachlorophenyl group and 2,4-dichloro7enyl group polyacrylate, polyacrylic chloroacrylate, polymethyl methacrylate, polyethyl methacrylate, polypropyl methacrylate, polyisopropyl methacrylate, polyisobutyl methacrylate, poly tert-butyl methacrylate, polycyclohexyl methacrylate, polyethylene glyfurome methacrylate, poly-2- Examples include polyesters such as shea 7-ethyl methacrylate and polyethylene terephthalate, polycarbonates such as polysulfone, bis 7 ester/-A polycarbonate, polyanhydrides, polyamides, and cellulose acetate. Also, P
olyver l1andbook 2nd ed.

(J, Brandrup, E, H,
iamergut [) John Wiley & 5o
Synthetic polymers having a glass transition temperature of 40° C. or higher, as described in NS Publishing, are also useful.

These polymeric substances may be used alone or in combination of two or more as a copolymer.

Among these, particularly preferred is JP-A-59-22342
Layer made of polyvinyl chloride described in No. 5 and JP-A-60
The layer made of polycarbonate and plastic eyebrows described in No. 19138 may be mentioned.

The above polymer is used by dissolving it in a suitable solvent and coating it on a support to form an image receiving layer, or by laminating a film-like image receiving layer made of the above polymer on a support, or by coating it on a support. It is also possible to constitute the image-receiving layer by a member (for example, a film) made of the above-mentioned polymer alone (also used as an image-receiving layer support).

Furthermore, the image-receiving layer may be constructed by providing an opaque layer (reflective N) containing titanium dioxide or the like dispersed in gelatin on the image-receiving layer on a transparent support. This opaque layer provides a reflective color image when the transferred color image is viewed from the transparent support side of the image-receiving layer.

〔Example〕

Examples of the present invention are shown below, and embodiments of the present invention include:
It is not limited to these.

Example-1 <Silver iodobromide milk resistance ga> At 50°C, JP-A No. 57-92523, No. 57-
Aqueous solution 5001 containing 11.6 g of potassium iodide and 131 g of potassium bromide in solution (A) prepared by dissolving 20 g of ossein gelatin, 1000 In of distilled water, and ammonia using the mixer shown in No. 92524.
Solution (B) and 500+nl of solution (C), an aqueous solution containing 11 moles of nitric acid and ammonia, were simultaneously added while keeping the pAg constant. The shape and size of the emulsion grains to be prepared were adjusted by controlling ρ11, pAg, and the addition rate of solutions B and C. In this way, silver iodide content of 7
Core milk particles having a mol%, regular octahedral shape, and an average particle size of 0.25 μm were prepared as ':A'.

Next, a core/shell type silver halide emulsion with a regular octahedron and an average grain size of 0.3 μm was prepared by coating a silver halide shell with a silver iodide content of 1 mol % in the same manner as above. did. (The coefficient of variation of particle size distribution was 9%.) The petals thus prepared were washed with water and desalted. The emulsion yield was 800 IIl.

Further, the silver halide emulsions prepared above were subjected to spectral sensitization as described below to prepare red-sensitive, green-sensitive and blue-sensitive light-sensitive silver halide emulsions.

a) Preparation of red-sensitive silver iodobromide 7L agent The above silver halide emulsion 700mβ4-
Hydroxy-6-methyl-1,3,3a,7-tetrazaindene 0.4g gelatin
32゜Sodium thiosulfate 10mg The following sensitizing dye (,) Methanol 1% solution 80-1 Distilled water
1200 theory! Sensitizing dye (,) b) Preparation of green-sensitive silver iodobromide emulsion The above silver halide emulsion 700 mN4-
Hydroxy-6-methyl-1,3,3a,7-tetrazaindene 0.4g gelatin
32g Sodium thiosulfate 1011 [1 The following sensitizing dye (
b) Methanol 1% solution 80mN distilled water
1200ml sensitizing dye (b) C) 5N blue-sensitive silver iodobromide emulsion! ! Said silver halide 70014-hydroxy-6-methyl-1,3,3a,7-tetrazaindene 0.4g gelatin
328 Sodium thiosulfate 10mg Sensitizing dye below (c) Methanol 1% solution 8oIIIN distilled water
1200 mN Sensitizing Dye (e) Organic Silver Salt Dispersion> 28.8 g of silver 5-methylbenzotriazole obtained by reacting 5-methylbenzotriazole and silver nitrate in a water-alcohol mixed solvent, and poly(N- 16.08 (vinylpyrrolidone) and 1.33 g of 4-sulfobenzotriazole sodium salt were dispersed in an alumina ball mill, and adjusted to pH 5.5 and 200 mN.

Dye-imaging substance dispersion> Exemplary dye-providing substance @) 98.9 g, 2,4-diD)octylhydroquinone 5.08 g and the following antifoggant 1.
08 was dissolved in 300 m/ethyl acetate, and alkanol
C (manufactured by DuPont) 248 m/248 m of 5% by weight aqueous solution, 26.4 g of photographic gelatin and phenylcarbamoylated gelatin (Rouslow type 17819PC) 34.6. After dispersing with an ultrasonic homogenizer and distilling off the ethyl acetate,
The pH was adjusted to 5.5 and the volume was adjusted to 1590 ml.

Hereinafter, Shimokin's Fogging Inhibitor (Preparation of Reducing Agent Solution) Illustrated Reducing Agent 4-(N-Ethyl-N-7 Toxyethylamino)-2-Methylphenyl Res J-7 Sodium Amate 93 .2g, 2 (ht% aqueous solution 207+sN of polyvinylpyrrolidone and 5wt% aqueous solution 4 of the following surfactant)
Mix 0ml and adjust the pH to 7 with water and citric acid aqueous solution.
．． 0 and finished at 600mZ.

Surfactant NaOzS-CH-COOCHz (CFzCF2) mH
CH2COCH2(CF 2CG 2) n H proverb, n
= 2 or 3 (made by 'I4', a hot solvent dispersion) 430 g of p-toluamide and 1410 mj of a 1.0 wt% aqueous solution of polyvinylpyrrolidone! was dispersed in a ball mill to obtain a hot solvent dispersion.

Preparation of coating solution for blue light-absorbing dye-containing layer of the present invention> Gelatin 20 wL% water soluble 9 10 m
l Polyvinylpyrrolidone 20wt% aqueous solution 7.5
Wi! Organic silver salt dispersion 46m
1 Hot solvent dispersion 20 parts 12
．． 2.5% aqueous solution of 4-fuchloro-6-hydroxy-3-) ryanon sodium trihum 4111 Dispersion liquid of blue light absorbing dye etc. 25.5mj! The above solution and dispersion were mixed to obtain a coating solution for a blue light-absorbing dye-containing layer of the present invention.

Dispersion of blue light absorbing dye, etc. CD' (oxidized form of reducing agent) scavenger 10°2g and blue light absorbing dye (PY-1) 15,211
dissolved in 80 ml of ethyl acetate, and 230 m of aqueous fi containing 1 g of alkanol XC and Log gelatin.
i! After mixing and dispersing with an m-sonic homogenizer and distilling off ethyl acetate, the pH was adjusted to 5.5 and 250mj!
And so.

Preparation of a heat-developable photosensitive material consisting of a copolymer of CD' scavenger and butyl acrylate (hereinafter referred to as B^ and (U) (In composition ratio 3/2, average molecular weight 1800)) The following coating solution was applied onto a photographic transparent polyester Tele 7 tallate film to a wet film thickness of 65 μm and dried to form a first photosensitive layer.

(Coating liquid composition) Pyi silver salt dispersion liquid 6411
Red-sensitive silver halide emulsion liquid 30.7ml reducing agent liquid 38.4ml hot solvent @liquid 94.8mN dye-providing substance dispersion liquid 101ml photographic gelatin 10wt% aqueous solution 27.7mN citric acid aqueous solution (adjusted to pH 5.5) Upper water 89ml 2.4-fucrol 6-hydroxy-s4 riazine sodium 2.5
% water soluble 'e, 13.3mi' total
480 wheels! A first photosensitive layer having the following composition is formed on the first photosensitive layer.
The middle layer was coated.

Gelatin 0.6g/m" Polyvinylpyrrolidone 0.3g/m2 Above CD' Scavenger 0.2g/2 methylbenztriazole silver 0.6g/+a2r
+-) Ruamido
1.011/+”2.4-dichloro-6-hydroxy-s) rhianon sodium
20 mg/m2 On the first intermediate layer, the dye-providing substance in the first photosensitive layer was changed to 0 of the exemplary dye-providing substance (the amount added was 1 molar equivalent to that of the dye-providing substance in the first photosensitive layer), and silver halide was added to the green-sensitive layer. A coating solution having the same composition as the first photosensitive layer except that silver halide was used was coated to a wet film thickness of 45 μl to form a second photosensitive layer.

On the second photosensitive layer, the coating solution for the blue light absorbing dye-containing layer having the composition of the first intermediate layer plus an exemplary blue light absorbing dye PY-1 <addition j 10.3 g/m2 is applied as a wet film. Thickness 2
A layer containing the blue light absorbing dye of the present invention (second width M) was coated at a thickness of 2 μm.

Further, on the second intermediate layer, the dye-providing substance in the first photosensitive layer is changed to an exemplary dye-providing substance (the amount added is equimolar to the dye-providing substance in the PIS1 photosensitive layer), and /'% silver lodenide is added to blue. A coating solution having the same composition as the first photosensitive layer except that sensitive silver halide was used was coated with a wet film thickness of 75 μm to form the third photosensitive layer.6 Furthermore, a protective layer with the following composition was coated on the third photosensitive layer. A multilayer photosensitive material (sample No. 1) was obtained.

Gelatin 0.28g/Thin 2
Polyvinylpyrrolidone 0.14g/m2
SiO□ 0.36H
/m2 70n (Asahi Glass Co., Ltd.!!!, 77 cord surfactant) 0.05g/bell 2p-)
Lua mid
0.42 g/m2 Multi-layer photosensitive materials (Samples N002 to
10) was produced.

Preparation of image receiving member> Polycarbonate (molecule i25,000, L-12
5. Apply a solution of ethylene chloride (Teijin Kasei) on photographic Neuraita paper, dry it, and apply it to polycarbonate paper. Og/
An image receiving member of m2 was made.

Evaluation of Light-Sensitive Material> The light-sensitive material obtained by the above method was subjected to 1 color exposure and green exposure at 800 CMS through a step wedge.

Next, the polycarbonate coated surface of the image receiving member and the photosensitive layer surface of the exposed photosensitive material were placed together and heated to 150°C.
Heat development was performed for 90 seconds at
was measured with blue and green light. In addition, the unevenness of the obtained images was visually evaluated. These results are shown in Table-1. Further, Table 1 also shows the absorption spread λIIIa×, half-value width, and molar extinction coefficient (ε) of the blue-absorbing dye used in a 77-ton solution.

Dye A Dye B As shown in Margin Table 1 below, the blue light absorbing dye of the present invention has a large ε, so compared to comparative dyes, a sufficient filter effect can be exerted even with a small amount of addition, and the absorption is sharp. For the sake of bottom /
1. It does not affect the sensitivity (especially green sensitivity N) and can completely cut out the passage of blue light to the lower layer. Also, there is no unevenness in the transferred image due to the addition of yellow filter dye. This is also an amazing effect.

Furthermore, as shown in Table 1, the blue light absorbing dye of the present invention is preferably a dye having a polymer or an organic group having 8 or more carbon atoms and a parent wood group from the viewpoint of immobility, and a hydrophilic group (a portion of the yellow dye monomer) is preferable. Particularly preferred are polymers which have a copolymer or copolymer.

〔Effect of the invention〕

The blue light absorbing dye represented by the general formula (1) of the present invention has a molar extinction coefficient and a longer absorption wavelength than the known blue light absorbing dyes used in the single layer of the blue light absorbing filter of the heat-developable color photosensitive material having a multilayer structure. Good cutting on the wavelength side. This allows the use of the blue light absorbing dye of the present invention in one layer of the blue light absorbing filter.
In addition, heat-developable color photosensitive materials with a multi-layer structure can reduce the content of blue light-absorbing dyes, resulting in capri,
Stain and density unevenness are improved (presumably due to a decrease in the content of the Vt light absorbing dye), and color reproducibility is improved by improving the cutoff on the long wavelength side of the absorption wavelength.

Claims (1)

[Scope of Claims] A thermal support having at least three layers containing a photosensitive silver halide, a dye-donating substance, and a reducing agent, each of which is spectrally sensitized to blue sensitivity, green sensitivity, and red sensitivity. In the developable color photosensitive material, the following general formula (1) is present between the blue-sensitive layer and the green-sensitive layer or between the blue-sensitive layer and the red-sensitive layer.
A heat-developable color photosensitive material comprising a layer containing a blue light-absorbing dye represented by: General formula (1) ▲ Numerical formulas, chemical formulas, tables, etc. may form a condensed ring with a 5- or 6-membered carbon ring or heterocycle), and R^1 and R^2 each represent a hydrogen atom, a halogen atom, an amino group,
or represents a monovalent organic group, R^3 represents a hydrogen atom, an alkyl group, or an aryl group, and a substituent on the ring represented by X, or at least one of R^1, R^2, and R^3; One is a ballast group that can immobilize the blue light-absorbing dye represented by the general formula (1) during thermal development. ]