JPH0369937A - Heat developable color photosensitive material - Google Patents

Abstract

PURPOSE:To produce a photosensitive material having constant stable performance and ensuring high density by using two or more kinds of dyestuff rendering compds. represented by the same structural formula and having different groups as at least one of specified groups in the formula. CONSTITUTION:Two or more kinds of dyestuff rendering compds. represented by structural formula I and having different groups as at least one of BAL and Time in the formula I are used in combination. In the formula I, PWR is a group releasing (Time)tDye on being reduced, Time is a group releasing type Dye through a reaction after release from PWR, t is 0 or 1, Dye is a group convertible into a diffusible dyestuff after release, BAL is a ballast group rendering diffusion resistance to the compd. and n is an integer of >=1. A photosensitive material having constant stable performance and ensuring high image density can be produced.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a heat-developable color photosensitive material, and particularly to a heat-developable color photosensitive material that has a high density and can be produced with constant and stable performance. It is.

(Background Art) Heat-developable photosensitive materials are well known in this technical field, and for information about heat-developable photosensitive materials and their processes, see, for example, "Fundamentals of the Photographic Industry" Non-Silver Salt Photographic Lines (published by Corona Publishing, 1982), Volume 2.
It is described on pages 42 to 255.

Many people have proposed methods for obtaining color images through heat development.

For example, U.S. Pat. No. 3,531,286, U.S. Pat.
．． No. 270, No. 4,021,240, Belgian Patent No. 802,519, Research Disclosure magazine (hereinafter referred to as RD), September 1975, pages 31-32, etc., describe the bond between an oxidized developer and a coupler. proposed a method for forming color images.

However, since the heat-developable photosensitive materials used to obtain the color images mentioned above are non-fixing type, silver halide remains even after the image is formed, and the white background gradually becomes colored when exposed to strong light or stored for a long period of time. This poses a serious problem. Furthermore, the above-mentioned methods generally require a relatively long time for development, and the resulting images have the drawbacks of high fog and low image density.

In order to improve these drawbacks, a diffusive dye is formed or released in an image form by heating, and this diffusible dye is
A method has been proposed in which images are transferred to an image-receiving material having a mordant using a solvent such as water.

(U.S. Pat. No. 4,500,626, 4,483°91
No. 4, No. 4,503,137, No. 4,559.290
No.; JP-A-59-165054, etc.) In the above method,
The developing temperature is still high, and the stability of the photosensitive material over time is not sufficient. Therefore, JP-A No. 59-218,443 discloses a method in which heat development is performed in the presence of a base or a base precursor and a trace amount of water to transfer the dye, thereby accelerating development, lowering the development temperature, and simplifying the processing. , 61-238
No. 056, European Patent No. 210,660A2, etc.

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

For example, US Pat. No. 4,559,290 describes the so-called DRR.
A reducing agent or its precursor is present in the oxidized form of the compound that does not have the ability to release a dye, and the reducing agent is oxidized according to the exposure amount of silver halide by heat development, and the reducing agent that remains unoxidized is A method of reducing and releasing a diffusible dye has been proposed. Also, European Patent Publication No. 22074
No. 6, Kokai Technical Report 87-6199 (Vol. 12, No. 22) describes N as a compound that releases a diffusible dye by a similar mechanism.
A heat-developable color photosensitive material using a compound that releases a diffusible dye upon reductive cleavage of a -X bond (X represents an oxygen atom, a nitrogen atom, or a sulfur atom) has been described.

(Problem to be Solved by the Invention) However, among the above-mentioned dye-donating compounds, some of which have high water-solubility in the release dye portion may significantly reduce the oil-solubility of the dye-donating compound. Understood. In this field, when a dye-providing substance is added to a coating film of a light-sensitive material, it is generally emulsified and dispersed using a high boiling point organic solvent using an oil protection method.

When creating an emulsion using this method, if the oil solubility of the dye-providing compound is low, the dye-providing substance may be present in the emulsion when it is stored refrigerated or kept in a dissolved state for a long time. It was found that there was a problem with precipitation of. In order to avoid such problems, it is common in this field to increase the weight ratio of high-boiling organic solvent to dye-providing compound; however, when this method is used in the system of the present invention, It was found that this resulted in a decrease in image density.

(Object of the Invention) An object of the present invention is to provide a heat-developable color photosensitive material that has a high image density and can be produced with constant and stable performance.

(Means for Solving the Problems) An object of the present invention is to provide a support with at least a photosensitive silver halide, a binder, a reducing agent, and a non-diffusible dye that is reduced by the reducing agent to release a diffusible dye. In a heat-developable color light-sensitive material containing a color compound, the dye-providing compound is represented by the structure of the following general formula [■], and for at least one type of dye, the dye-donating compound that releases the dye is represented by the general formula [■]. This was achieved by a heat-developable color photosensitive material characterized in that two or more types of materials having at least one different rBALJ or rTime group are used in combination.

General formula [■] (PWR-)-(-T i me+1D ye(BAL
).

In the formula, PWR is reduced to (Time-)
+Represents a group that releases Dye.

Time represents a group that is released from PWR as (Time÷+Dye) and then releases Dye through a subsequent reaction.

t represents an integer of 0 or l.

Dye represents a group that becomes a diffusible dye after being released.

BAL is a ballast group that imparts diffusion resistance to the compound of general formula [I), and n represents an integer of 1 or more. BAL is preferably a group containing a substituted or unsubstituted alkyl group, aryl group, or aralkyl group, and containing at least 4 or more carbon atoms, preferably 8 or more carbon atoms.

First, PWR will be explained in detail.

PWR is a compound that releases a photographic reagent through an intramolecular nucleophilic substitution reaction after being reduced as disclosed in U.S. Pat. No. 4,139,389 or U.S. Pat. It may correspond to the part containing the electron-accepting center and the intramolecular nucleophilic substitution reaction center in U.S. Pat.
As disclosed in No. 8257, it corresponds to the part containing the electron-accepting quinonoid center and the carbon atom that connects it to the photographic reagent in a compound that eliminates the photographic reagent by an intramolecular electron transfer reaction after being reduced. It may be something that you do. Also, JP-A-56-], 42530
No. 4,343.893, U.S. Pat. No. 4,61
No. 9,884, the single bond is cleaved to release the photographic reagent after reduction, and the aryl group substituted with an electron-withdrawing group and the atom connecting it to the photographic reagent (sulfur atom or carbon or a nitrogen atom).

It also corresponds to a moiety containing a nitro group in a nitro compound that releases a photographic reagent after accepting electrons and a carbon atom that connects the photographic reagent with the nitro group as disclosed in U.S. Pat. No. 4,450,223. may be used, or US Patent 4
, 609, 610, which corresponds to the geminal dinitro moiety in the dinitro compound that β-eliminates the photographic reagent after electron acceptance and the carbon atom-containing moiety that connects it to the photographic reagent. good. However, in order to more fully achieve the object of the present invention, among the compounds of the general formula CI), those represented by the general formula [■] are preferred.

AG (T im e)+D y e in the general formula (III (BAL)) and the general formula [■] is bonded to at least one of R', R'' or EAG.

The portion corresponding to the PWR of the general formula [■] in the general formula []I) will be explained.

X is an oxygen atom (-0-), a sulfur atom (-S-), 8 Represents a group (-N-) containing a nitrogen atom.

R1, R2 and Rj represent a group other than a hydrogen atom or a simple bond.

R1 and R3 are preferably substituted or unsubstituted alkyl groups, aryl groups, heterocyclic residues, acyl groups, sulfonyl groups, and the like.

R2 is preferably a substituted or unsubstituted acyl group or sulfonyl group. R1, R2 and R3 are bonded to each other to form 5-
An 8-membered ring may be formed.

Preferred examples of the compound represented by the general formula CI[] will be described below, including the bonding position of (-T im e) + D y e.

AG (BAL).

AG (BAL),.

CH=CH2 AG (BAL).

AG (BAL)ゎ C,H.

AG (BAL).

AG (BAL).

AG ■ (BAL).

(!IAL).

(BAL).

(BAL)n (BAL).

(BAL).

AG In the above, BAL has the same meaning as above, but is preferably a group that is omitted. Here, R,, R, represents a hydrogen atom or a substituent, and either one has 4 or more carbon atoms, especially 8
represents the above substituents. As a substituent, an alkyl group,
There are aryl groups, aralkyl groups, etc., each of which may further have another substituent.

Examples of Time include the groups described in columns 10 to 19 of US Pat. No. 4,783,396.

In the above specific examples, Dye represents a releasing dye.

Dyes that can be used include azo dyes, azomethine dyes, anthraquinone dyes, naphthoquinone dyes,
These include nitro dyes, quinoline dyes, carbonyl dyes, and phthalocyanine dyes. Note that these dyes can also be used in a temporarily short-wave form that can be restored during development. Specifically, EP76.492A, JP-A-59-
Dye disclosed in No. 165054 can be used.

Specific examples of the dye-providing compound of the present invention represented by the general formula [■] are shown below. In this specific example, the dye-donating compound is described separately into a core portion and a dye portion. Regarding the “Dye part” in the specific example of the mother nucleus structure,
Both magenta and yellow colors can be linked as dyes, and for example, a dye-donating compound in which cyan dye Ca is bonded to the mother nucleus D-1 is expressed as D-1-Ca.

<Specific example of mother nucleus structure> -1 -2 CONHC+5Hxs(n) -3 -4 -6 CONHC+, Hay(n) CONHC3H7-0-C sH3t(n) -7 D-9 -13 SO□NHC sHst(n ) SO2NHC+ aHst(n) D-15 D-17 -16 -18 SOJHCsHy-0-C+, Hst(n)-19 -21 -22 -20 -23 SOJ+CHt-CH-C4Hs(n))tCONHC
sHy-0-C+J3r(n)D-27 D-33 -34 SO! NHC+5Hsy(n) 0INIC *Hat(n) SO! NH-C3H7-0-CI Jst(n)CON
HC+sHas(n) D-35 D-36 9 0 SO,C Self H3y(n) -37 -38 SO2C+ tH! g(n) -41 -42 SOxC3Ht-0-C+aH17 D-43 D-44 Magenta dye a <Specific example of structure of dye part> Yellow dye a CH.

cyan dye a b c. Shihachi N11tUl; 2M.

The above compounds can be synthesized by the method described in EP76492A.

The amount of the dye-donating compound used depends on the extinction coefficient of the dye, but is 0.05 to 5 mmol/d, preferably 0.1 to 3 mmol/d.
It is in the mmol/d range. When obtaining a black image or an image of different hues, for example, at least one cyan, magenta, and yellow dye-providing substance is added in or adjacent to the layer containing silver halide, as described in JP-A-60-162251. A mixture of two or more dye-providing substances that release mobile dyes having different hues is used, such as being mixed and contained in a layer.

In the present invention, an electron donor and an electron transfer agent (ETA) are used, and details of these compounds are described in European Patent Publication No. 220746A2, Technical Report No. 87-6199, and the like. Particularly preferred electron donors (or precursors thereof) are compounds represented by the following general formula [C] or [D].

General formula [C] OA,. 2 HIO+ In the formula, A1° and A, , each represent a hydrogen atom or a protecting group for a phenolic hydroxyl group that can be deprotected with a nucleophilic reagent.

Here, the nucleophilic reagents include anionic reagents such as OHe, Roe (R, alkyl group, aryl group, etc.), hydroxamic acid anions sos''e, primary or secondary amines, hydrazine, hydroxylamine, etc. , alcohols, thiols, and other compounds with lone pairs of electrons.

A lot, AI. Preferred examples of 2 include a hydrogen atom, an acyl group, an alkylsulfonyl group, an arylsulfonyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a dialkylphosphoryl group, a dialkylphosphoryl group, or JP-A-59-197037, JP-A-59-197037.
20105, and Alal, AIot may be R"', R" when possible.
" , R"" and R204 may be combined with each other to form a ring.Also, AI.l and AlO2 may be the same or different.

R201, R202, R2O3 and R20' are each a hydrogen atom, an alkyl group, an aryl group, an alkylthio group, an arylthio group, a sulfonyl group, a sulfo group, a halogen atom, a cyano group, a carbamoyl group, a sulfamoyl group,
Amide group, imide group, carboxyl group, sulfonamide,
Represents a group such as a do group. These groups may have a substituent if possible.

However, the total carbon number of R201 and R204 is 8 or more. In addition, in general formula [C], R201 and R202
and/or R2O3 and R204 may be combined with each other to form a saturated or unsaturated ring.

Among the electron donors represented by the general formula [C] or CD), those in which at least two of R201 to R20' are substituents or groups other than hydrogen atoms are preferred. Particularly preferred compounds are those in which at least one of R201 and R202 and at least one of R261 and R204 are substituents other than hydrogen atoms.

A plurality of electron donors may be used in combination, or an electron donor and its precursor may be used in combination. Further, the electron donor may be the same compound as the reducing substance of the present invention. Specific examples of the electron donor will be listed, but the invention is not limited to these compounds.

(ED-1) H (ED-2) DH DH (ED-3) DH DH (ED-4) DH DH (ED-5) DH HI DH (ED-10) DH DH (ED-1 1) (ED -12) (ED-6) DH (ED-7) DH DH (ED-8) DH DH (ED-9) DH H3 DH (ED-1 3) DH (ED-14) Electron donor (or its precursor) The amount of positive dye-providing compound used has a wide range, but it is preferably 0 per mole of positive dye-donating compound.
．． A preferred range is from 0.01 mol to 50 mol, particularly from 0.1 mol to 5 mol. Also, 0.001 mol to 5 mol, preferably 0.001 mol to 1 mol of silver halide. O1 mol~1
．． It is 5 moles.

As the ETA used in combination with these electron donors, any compound can be used as long as it is oxidized by silver halide and the oxidized form thereof has the ability to cross-oxidize the above electron donor. Preferably a sexual one.

A particularly preferable ETA is the following general formula (X-1) or (
This is a compound represented by Xn).

(X-1) [X-■] In the formula, R represents an aryl group, R"1, R20!R30
R304, Rff15 and RJO& represent a hydrogen atom, a halogen atom, an acylamino group, an alkoxy group, an alkylthio group, an alkyl group or an alkyl group, and may be substituted if possible. Further, these may be the same or different.

In the present invention, compounds represented by the general formula (X-U) are particularly preferred. General formula (X-Ill, R”
'% R'''', R''' and R264ha, hydrogen atom,
An alkyl group having 1 to 10 carbon atoms, a substituted alkyl group having 1 to 10 carbon atoms, and a substituted or unsubstituted oryl group are preferable, and more preferably a hydrogen atom, a methyl group, a hydroxymethyl group, a phenyl group, or a hydroxyl group. , a phenyl group substituted with a hydrophilic group such as an alkoxy group, a sulfo group, or a carboxyl group.

Specific examples of ETA are shown below.

(X-1) (X-2) (X-7) (X-8) (X-3) (X-4) (X-9) (X-10) (X-5) (X-6) (X-11) (X-12) I′12UI′i (X-13) (X-15) (X-17) (X-14) (X-16) What is the ETA precursor used in the present invention? It is a compound that does not have a developing effect during storage of a photosensitive material before use, but can release ETA only by the action of an appropriate activator (eg, base, nucleophile, etc.) or heating.

In particular, the ETA precursor used in the present invention has a reactive functional group blocked with a blocking group.
Although it does not have the function as ETA before development, it can function as L7 with ETA because the blocking group is cleaved under alkaline conditions or when heated.

Examples of the ETA precursor used in the present invention include 1-
2- and 3-acyl derivatives of phenyl-3-pyrazolidinone, 2-aminoalkyl or hydroxylalkyl=i
Hydroquinone, metal salts such as catechol (lead, cadmium, calcium, barium, etc.), hydroquinone acyl halide 3g conductor, hydroquinone oxazine and bisoxazine derivatives, lactone type ETA precursor, hydroquinone precursor with quaternary ammonium group body,
In addition to cyclohex-2-ene-1,4-dione type compounds, compounds that release ETA through electron transfer reactions, compounds that release ETA through intramolecular nucleophilic substitution reactions, ETA precursors blocked with phthalide groups, India Examples include ETA precursors blocked with methyl groups.

The ETA precursor used in the present invention is a known compound, for example, US Pat. No. 767.704, US Pat.
, No. 967, No. 3,246.988, No. 3,29
No. 5,978, No. 3,462.266, No. 3,5
No. 86,506, No. 3.615,439, No. 3.
650. No. 749, No. 4.209.580, No. 4.330.617, No. 4,310.612,
British Patent No. 1.023.701, British Patent No. 1,231°8
No. 30, No. 1,258.924, No. 1゜346.
No. 920, JP-A-57-40245, JP-A No. 58-113
No. 9, No. 58-1140, No. 59-178458,
Developer precursors described in Japanese Patent No. 59-182449, Japanese Patent No. 59-182450, etc. can be used.

In particular, JP-A-59-178458, JP-A No. 59-18244
The precursors of l-phenyl-3-pyrazolidinones described in No. 9 and No. 59-182450 are preferred.

ETA and an ETA precursor can also be used in combination.

In the present invention, the combination of electron donor and ETA is preferably incorporated into the heat-developable color photosensitive material. Electron donors, ETAs, or their precursors can be used in combination of two or more, and can be used in emulsion layers (blue-sensitive layers, green-sensitive layers, red-sensitive layers, infrared-sensitive layers, ultraviolet-sensitive layers, etc.) in light-sensitive materials. It can be added to each emulsion layer or only to some emulsion layers.
Further, it can be added to N adjacent to the emulsion (antihalation layer, undercoat layer, intermediate layer, protective layer, etc.), or even to all layers. The electron donor and ETA can be added to the same layer or to separate layers. Additionally, these reducing agents can be added in the same layer as the dye-donating substance or in a separate layer; however, it is preferable that the diffusion-resistant electron donor be present in the same layer as the dye-donating substance. preferable,
ETA can be incorporated into the image-receiving material (dye fixing layer), or if a small amount of water is present during thermal development, it can be dissolved in this water.An electron donor, ETA, or a precursor thereof. The preferred amount used is 0.01 to 50 mol in total, preferably 0.1 to 50 mol, per 1 mol of the dye-providing substance.
5 mol, total amount 0.001 per 1 mol of silver halide
-5 mol, preferably 0.01-1.5 mol.

Moreover, ETA is 60 mol% or less, preferably 40 mol% or less of the total reducing agent. When ETA is dissolved in water and supplied, the concentration of ETA is 104 mol 1 to 1 mol/l.
is preferred.

In order to introduce the reducing substances, dye-donating substances, electron donors, electron transfer agents or their precursors and other hydrophobic additives of the present invention into the hydrophilic colloid layer, high-boiling organic solvents such as alkyl phthalates can be used. Esters (dibutyl phthalate, dioctyl phthalate, etc.), phosphoric acid esters (diphenyl phosphate, triphenyl phosphate, tricyclohexyl phosphate, tricresyl phosphate, dioctyl butyl phosphate), citric acid esters (e.g. acetyl tributyl citrate)
, benzoic acid esters (e.g. octyl benzoate), alkylamides (e.g. diethyl laurylamide), fatty acid esters (e.g. dibutoxyethyl succinate, dioctyl azelate), trimesic acid esters (e.g. tributyl trimesate) Patent application 1987 -231500
Carboxylic acids described in JP-A-59-83154, JP-A-59178451, JP-A-59-178452, JP-A-59
-178453, 59-178454, 59-
178455 and 59-178457 using the method described in U.S. Pat. After dissolving in a lower alkyl acetate such as butyl, ethyl propionate, secondary butyl alcohol, methyl isobutyl ketone, β-nitoxyethyl acetate, methyl cellosolve acetate, cyclohexanone, etc., it is dispersed in a hydrophilic colloid. The above-mentioned high boiling point organic solvent and low boiling point organic solvent may be used together. Furthermore, after dispersion, the low boiling point organic solvent can be removed by ultrafiltration or the like as required. The amount of the high-boiling organic solvent is 10 g or less, preferably 5 g or less, per 1 g of the dye-providing substance used. Further, the amount is 5 g or less, preferably 2 g or less per 1 g of the diffusion-resistant reducing agent. Furthermore, 1 g of high boiling point organic solvent per 1 g of binder.
It is preferably 0.5g or less, more preferably 0.5g or less.
3g or less is appropriate. Also, Special Publication No. 51-39853,
The dispersion method using a polymer described in JP-A-51-59943 can also be used. In addition, it can be directly dispersed in an emulsion, or it can be dissolved in water or alcohol and then dispersed in gelatin or an emulsion.

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 binder in addition to the method described above. (For example, JP-A-59-174830, JP-A No. 53-1
02733, Japanese Patent Application No. 62106882, etc.) When dispersing a hydrophobic substance in a hydrophilic colloid, various surfactants can be used. For example, JP-A-59-
The surfactants listed on pages (37) to (38) of No. 157636 can be used.

The heat-developable photosensitive material of the present invention basically has a photosensitive silver halide, a binder, an electron donor, an electron transfer agent, and a reducible dye-donating compound on a support, and if necessary, An organic metal salt oxidizing agent or the like can be contained therein. These components are often added to the same layer, but if they are in a reactable state, they can be divided and added to separate layers. For example, if a colored dye-providing compound is present in the lower layer of the silver halide emulsion, a decrease in sensitivity can be prevented. 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 in the chromaticity diagram using the three primary colors yellow, magenta, and cyan, at least three silver halide emulsion layers each sensitive to a different spectral region are used in combination.

For example, there are combinations of three layers such as a blue-sensitive layer, a green-sensitive layer, and a red-sensitive layer, and a combination of a green-sensitive layer, a red-sensitive layer, and an infrared-sensitive layer. Each photosensitive layer! Various arrangement orders known for conventional color light-sensitive materials can be adopted.

Further, each of these photosensitive layers may be divided into two or more layers 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 back layer.

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

The silver halide emulsion used in the present invention is a surface latent image type emulsion. A surface latent image type emulsion is an emulsion in which a latent image is mainly formed on the grain surface, and is also called a negative type emulsion. The definition of surface latent image type emulsion is described in Japanese Patent Publication No. 58-9410.

The silver halide emulsion of the present invention 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 monodisperse or polydisperse, or a mixture of monodisperse emulsions may be used. Particle size is 0. 1
-2μ, especially 0.2-1.5μ is preferred. The crystal habit of the silver halide grains may be cubic, octahedral, tetradecahedral, tabular with a high aspect ratio, or any other form.

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

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

The coating amount of the photosensitive silver halide used in the present invention is in the range of 1 to 1 Og/rd in terms of silver.

In the present invention, an organic 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 agent include those described in U.S. Pat. 500゜626 No. 5
There are benzotriazoles, fatty acids and other compounds described in columns 2 to 53. Furthermore, silver salts of carboxylic acids having an alkynyl group such as silver phenylpropiolate described in JP-A No. 60-113235, and JP-A No. 61-249044
Also useful is acetylene silver, described in No. Two or more types of organic silver salts may be used in combination.

The above-mentioned organic silver salts contain, per mol of photosensitive silver halide,
0. Ol to 10 mol, preferably 0.01 to 1
Moles can be used together.

The total coating amount of photosensitive silver halide and organic silver salt is suitably 50 to 1 Og/rd in terms of silver.

Various antifoggants or photographic stabilizers can be used in the present invention. An example is RD176
43 (1978) pages 24-25, nitrogen-containing carboxylic acids and phosphoric acids described in JP-A-59-168442, or mercapto compounds and their Metal salts, acetylene compounds described in JP-A No. 62-87957, and the like are used.

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

Specifically, U.S. Pat.
17029 (1978), pages 12-13, and the like.

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

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

These sensitizing dyes may be added to the emulsion during or before or after chemical ripening.
It may be carried out before or after nucleation of silver halide grains according to No. 756 and No. 4,225,666. The amount added is generally about 101 to lo-2 moles per mole of silver halide.

A hydrophilic binder is preferably used for the constituent layers of the photosensitive material or dye fixing material. Examples include those described on pages (26) to (28) of JP-A-62-253159. Specifically, transparent or translucent hydrophilic binders are preferred, and include natural compounds such as proteins or cellulose derivatives such as gelatin and gelatin derivatives, polysaccharides such as starch, gum arabic, dextran, and pullulan, and polyvinyl alcohol, Examples include polyvinylpyrrolidone, acrylamide polymer, and other synthetic polymer compounds. Also, JP-A-62-24
5260 etc., i.e., -CO
Homopolymers of vinyl monomers having OM or -8O,M (M is a hydrogen atom or an alkali metal) or copolymers of these vinyl monomers with each other or with other vinyl monomers (e.g. sodium methacrylate, ammonium methacrylate, Sumitomo Chemical) (Sumikagel L-5H) manufactured by Ishikawa Co., Ltd. is also used. Two or more of these binders can also be used in combination.

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

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

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

In the present invention, a compound that activates development and stabilizes images can be used in the light-sensitive material. For specific compounds preferably used, see U.S. Patent No. 4,50.
It is described in columns 51-52 of No. 0.626.

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 a layer containing mordant and pine goo at least 1/2! ! have As the mordant, those known in the photographic field can be used, and examples thereof include U.S. Pat.
Column 9 and JP-A No. 61-88256 (32) to (41)
Mordant described on page 62-244043, 6
Examples include those described in No. 2-244036. *Also, dye-receptive or 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 security VIM.

The constituent layers of the light-sensitive material and dye-fixing material may contain plasticizers, slip agents, or 948! of the light-sensitive material and dye-fixing material. L
A high boiling point organic solvent can be used as a property improver.

Specifically, page (25) of JP-A-62-253159,
There are those described in No. 62-245253 and the like.

Furthermore, various silicone oils (
All silicone oils can be used, from dimethylsiloxane 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 described in technical data P6-18B, carboxy-modified silicone (product name X-22-
3710) etc. are effective.

Also, JP-A-62-215953 and JP-A No. 63-46449.
The silicone oil described in the issue is effective.

An anti-fading agent may be used in photosensitive materials and dye-fixing materials. These include antioxidants, UV absorbers, or certain metal complexes.

Examples of antioxidants include chroman compounds, coumaran compounds, and phenolic compounds* (for example, Hingood 7).
hydroquinone derivatives, hindamine 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 0 (U.S. Pat. No. 3,352,681, etc.),
Benzo-7-based compounds (JP-A-46-2784, etc.), other JP-A-54-48535, JP-A-62-136
There are compounds described in No. 641, No. 61-88256, and the like. Also, ultraviolet #! described in JP-A No. 62-260152!
Absorbent polymers are also effective.

As metal complexes, US Pat. No. 4,241,155,
Same No. 4,245,018 No. 3-36m, Same No. 4,25
No. 4,195, columns 3 to 8, JP-A-62-174741, JP-A No. 61-88256 (27) to (29) X, I'1
No. 463-199248,! 11BH62-23410
There are compounds described in No. 3 and No. 62-230595.

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 gold xi compounds may be used in combination.

A fluorescent brightener may be used in the light-sensitive material or the dye-fixing material. It is preferable to incorporate the fluorescent brightener into the dye-fixing material in the vF, or to supply it from outside the light-sensitive material. For example, “The
Chea+1stry of 5ynthetic
Examples include compounds described in Dyes J, Volume V, Chapter 8, JP-A-61-143752, and the like. More specifically, stilbene compounds, coumarin compounds, biphenyl compounds, benzoxacylyl compounds,
Examples include 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 U.S. Pat.
Examples include hardeners described in No. 1-18942 and the like. More specifically, aldehyde hardeners (such as formaldehyde), aziridine hardeners, epoxy hardeners, vinylsulfone hardeners (N,N'-ethylene-bis(
(vinylsulfonylacetamido)ethane, etc.), N-methylol hardeners (dimethylol urea, etc.), and polymer hardeners (compounds described in JP-A-62-234157, etc.).

A wide variety of surfactants can be used in the constituent layers of photosensitive materials and dye-fixing materials, such as coating aids, improving peelability, improving slipperiness, preventing static electricity, and accelerating 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,
A 81 fluoro compound may be included for antistatic properties, improved peelability, etc. Typical examples of fluoro compounds include 77-strand surfactants described in Japanese Patent Publication Nos. 57-9053 No. 8 to 17MA, JP-A Nos. 61-20944 and 62-135826, and fluorine oils. Examples include hydrophobic fluorine compounds such as oily 77-compounds and solid fluorine compound resins such as 47-/ethylene street resin.

A matting agent can be used in the photosensitive material and the dye fixing material. 77 Agents include silicon dioxide, polyolefin, polymethacrylate, etc. JP-A-61-8825
In addition to the compounds described on page 29 of No. 6, *i@Nos. 62-110064 and 62-11, such as benzoguanamine resin beads, polycarbonate resin beads, and AS resin beads.
There is a compound described in No. 0065.

In addition, the constituent layers of the light-sensitive material and the dye-fixing material may contain a thermal solvent, an antifoaming agent, an antifoaming agent, a colloidal silicate agent, and the like.
No. 88256, pages (26) to (32).

In the present invention, an image formation accelerator can be used in the light-sensitive material and/or the dye fixing material.1 The image formation accelerator includes the promotion of the redox reaction between the silver salt oxidizing agent and the reducing agent, and the promotion of the redox reaction between the silver salt oxidizing agent and the reducing agent. 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. Functions include bases or base precursors, nucleophilic compounds, high-boiling organic solvents (oils), thermal solvents, surfactants, and more! It is classified as a compound that interacts with L or silver ions. However, these substance groups contain 8 complexes in one shell.
! It usually has some of the above-mentioned promoting effects. For details, see US Patent 4,
No. 678.739, columns 38-40.

Examples of base precursors include salts of organic acids and bases that are decarboxylated by heat, compounds that release amines by intramolecular nucleophilic substitution reaction, Rossen rearrangement, or Beckmann rearrangement. A specific example is U.S. Pat. No. 4,511,493, v
It is described in P Kai No. 62-65038.

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

In addition to the above, compounds capable of complex-forming reactions with poorly soluble metal compounds and metal ions constituting the poorly soluble metal compounds described in European Patent Publication No. 210,660 and U.S. Patent No. 4,740,445 ( Combinations of complex-forming compounds (referred to as complex-forming compounds) and compounds that generate bases by electrolysis as described in JP-A-61-232451 can also be used as base precursors. The former method is particularly effective.

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

In the light-sensitive material and/or the dye-fixing material of the present invention, a wide variety of development stoppers can be used to provide a constant image regardless of fluctuations in processing temperature and processing time during development.

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

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

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

As the support for the light-sensitive material and dye-fixing material of the present invention, those that can be heated to the processing temperature are used. Common examples include paper and synthetic polymers (films). Specifically, polyethylene terephthalate, polycarbonate, polyvinyl chloride, polystyrene, polypropylene,
Polyimides, celluloses (e.g. triacetylcellulose) or films containing pigments such as titanium oxide, film-processed synthetic paper made from polypropylene, synthetic resin valves such as polyethylene, and natural pulp. Mixed paper, Yankee paper, baryta grade, coachite paper (especially cast coated paper), metal, cloth, glass, etc. are used.

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

In addition, JP-A-62-253159 (2) to (3)
The supports described on page 1) can be used.

The surface of these supports may be coated with hydrophilic binder, alumina sol, semiconductive metal oxide such as tin oxide, carbon black, or other antistatic agent.

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 copying machines. A method of scanning and exposing an original image through a slit using an exposure device, etc. A method of transmitting image information via an electric signal to a light emitting diode, various lasers, etc. for exposure, 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 i-image display device such as a sense 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.
The light source described in No. 26, column 56 can be used.

Further, image exposure can also be performed using a wavelength conversion element that combines a nonlinear optical material and a coherent light source such as a laser beam. Here, nonlinear optical materials are materials that can exhibit nonlinearity between the polarization and electric field that appear when a strong optical electric field such as a laser beam is applied, and include lithium niobate, potassium dihydrogen phosphate (KDP) ), lithium iodate, BaBO, etc., urea derivatives, nitroaniline derivatives, nitropyridine-N-oxide derivatives such as 3-methyl-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 guided waveguide type, fiber type, etc. are known, and either of them is useful.

Further, the above-mentioned image information can be obtained from a video camera, an electronic still camera, etc. (am number, television signal represented by the Nippon Television Signal Standard (NTSC), image signal obtained by dividing the original picture into many pixels using a scanner, CG
Image signals created using a computer such as SCAD 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 tffi also function as a :fI antistatic layer.

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
As detailed in No. 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 (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 less, for example, when the solvent is water, the temperature is preferably 50°C or higher and ioo°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 solvents containing inorganic alkali metal salts and organic bases (these bases include Those described in the section of image formation accelerators can be used. *In addition, a low boiling point solvent or a mixed solution of a low boiling point solvent and water or a basic aqueous solution can also be used. Further, a surfactant, an antifoggant, a complex-forming compound with a sparingly soluble metal salt, etc. may be included in the solvent.

These solvents can be used in a method of applying them to dye fixing materials, photosensitive materials, or both.

The amount used may be as small as 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 N or dye fixed layer, there is, for example, the method described in JP-A-61-147244, page (26). It is also possible to use the solvent by encapsulating it in microcapsules or otherwise incorporating it into the photosensitive <S material or the dye fixing material, or both.

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 light-sensitive material or the dye-fixing material, or may be incorporated into both.Also, the layer for yiL may be any of the emulsion layer, intermediate layer, protective layer, and dye-fixing layer. , it is preferable to incorporate it into the dye fixing layer and/or its adjacent layer.

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

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

Heating methods in the development and/or transfer process include contact with a heated block or plate, contact with a hot plate, hoft presser, heat roller-halogen lamp heater, infrared and far-infrared lamp heater, etc. For example, 1A is passed through a high temperature atmosphere.

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

Any of a variety of thermal development equipment can be used to process the photographic elements of this invention; for example, JP-A-59-75247;
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.

<Example 1> A method of preparing a gelatin dispersion of a dye-providing compound will be described.

Yellow, magenta, and cyan dye-providing substances were mixed with other additives according to the formulations in the table below, and heated and dissolved at 60° C. to form a uniform solution.

This solution and 1°Og of a 10% aqueous solution of lime-treated gelatin,
Sodium dodecylbenzenesulfonate 0. After stirring and mixing 6 g and 50 cc of water, the mixture was dispersed using a homogenizer for 10 minutes at 10000 rpm.

This dispersion is called a gelatin dispersion of a dye-providing compound.

Several types of dispersions of dye-providing compounds of each color were prepared by the above method. The contents are shown in Table 2.

In Table 2, when the dye-providing compounds are mixed as intended for the purpose of the present invention, the mixing ratio is shown in molar ratio.

In addition, when the amount of tricyclohexyl phosphate added is changed, the amount added is expressed as a weight ratio to the dye-providing compound.

Table 2 Continued from Table 2 The emulsion of Nαl-22 of Group 2 was stored under refrigeration at 4°C for one month, then heated and dissolved at 40°C, and added to polyethylene using a rod par. It was uniformly applied onto the terephthalate base so that the wet film thickness was 30 μm.

After drying, the number of insoluble precipitates per 1 d was determined as shown in Table 3.

Continuation of <Table 3> <Example 2> The method for preparing emulsion (1) for the blue-sensitive layer will be described.

A well-stirred gelatin aqueous solution (20 g of gelatin 1 3 g of hydrium bromide in 800 cc of water and 0.3 g of 80 (CH Ri! 5 (CH2)! 5 (CH Ri 201) was added and kept at 55°C) The following solutions (1) and (2) were added simultaneously over 30 minutes.Then, the following (3)
) and (4) were added simultaneously over 20 minutes. In addition, (3) After starting the addition of the solution, add the following dye solution for 18 minutes for 5 minutes.
Added within minutes.

After washing with water and desalting, 20 g of lime-treated ossein gelatin was added to adjust the pH to 6.2 and pAg to 8.5, and then sodium thiosulfate and 4-hydroxy-6-methyl-1,3,
Optimal chemical sensitization was carried out by adding 3a,7-tet, lazaindene, and chloroauric acid. In this way, the average particle size, 0.
600 g of a 40 μm monodispersed tetradecahedral silver iodobromide emulsion was obtained.

dye solution Eh 0° 2g 0.12g is dissolved in 160cc of methanol.

A method for preparing a dispersion of zinc hydroxide will be described.

The average particle size is 0. 2μ zinc hydroxide 12°5g1
As a dispersant, 1 g of carboxymethyl cellulose, 0.1 g of sodium polyacrylate, and 100 c of a 4% gelatin aqueous solution.
In addition to C, the mixture was ground for 30 minutes in a mill using glass beads with an average particle size of 0.75.

The glass peas were separated to obtain a dispersion of zinc hydroxide.

Next, a method for preparing a dispersion of an electron transfer agent will be described. .

Add 10 g of the electron transfer agent below, 0.5 g of polyethylene glycol nonylphenyl ether as a dispersant, and 0.5 g of the anionic surfactant below to a 5% aqueous gelatin solution, and use a mill to grind glass peas with an average particle size of 0.75 mark. using 6
Milled for 0 minutes. The glass beads were separated and the average particle size was 0.
A 3μ electron transfer agent dispersion was obtained.

Anionic surfactant Using the above materials, the photosensitive material 101 shown in Table 4
(The emulsion used was Nαl from <Example 1>).

<Table 4> Constituent water-soluble polymer of photosensitive material 101 ■ Water-soluble polymer of zinc hydroxide surfactant ■ Hardener ■ 0.40 0.03 0.01 0.02 Hardener for SO, ■ 1.2 -Bis(vinylsulfonylacetamido)ethane silver halide emulsion (1) Electron donor (HD-12) Electron transfer agent (X-2) High boiling point solvent ■ Antifoggant ■ Surfactant ■ Water-soluble polymer ■ Support polyethylene Converted to silver terephthalate 0.38 0.31 0.03 0.20 6X10-' 0.02 0.01 Thickness 100 μm Antifoggant ■ SH Surfactant ■ Surfactant aerosol OT Emulsion used in photosensitive material 101 Light-sensitive materials 102 to 105 having exactly the same composition except that l was changed from 2 to 5 were prepared in the same manner.

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

under A dye fixing material R-1 was prepared according to the composition shown in the table.

Configuration of support (1) Silicone oil (1) Surfactant (1) (nζ12゜ 6) Continuation of Table 5 Surfactant (2) C,F ,So,NCH2C00K C,H.

Surfactant (3) CH+ H2s CON HCH! CH2CH2N” CH
2COO'CH.

CH2C00CH,CHC,H.

Na0sS-CHCOOCH,CHC,H.

C2Hs Fluorescent brightener (1) 2゜5bis(5-tert-butylbenzoxazole (2)) Thiophene surfactant (5) Cs Ht C,F ts O2N+CHiCH20+<+CHz-)-ts
OWN a Water-soluble polymer (1) Sumikagel L5-H (manufactured by Sumitomo Chemical ■) Water-soluble polymer (2) Dextran (molecular weight 70,000) Mordant (1) SO, K (CH, (-0-CH2-CH-CHt) )! Matting agent (1) 1 Silica matting agent (2) 1 Benzoguanamine resin (average particle size 15μ) A tungsten light bulb was used for the above photosensitive materials 101 to 104, and the photosensitive materials 101 to 104 were passed through a gray filter with a continuously changing density to 5,000 yen. Exposure was made for 1/10 seconds at lux.

This exposed photosensitive material is processed at a linear speed of 200+111/s.
While feeding by EC, 57 nl/rrr of water was supplied to the emulsion surface using a wire bar, and immediately thereafter, the image receiving material and the film surface were superimposed so that they were in contact with each other.

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

When it was then peeled off from the receiving material, a yellow dye image was obtained on the receiving material, corresponding to the gray filter density. The results of measuring the maximum density (Dmax) and minimum density (Dmin) of this image are shown in Table 6>.

<Table 6> <Example 3> The method for preparing emulsion (n) for the green-sensitive layer will be described.

A well-stirred aqueous solution (730ml water to 22ml gelatin)
0g1 0.30g of potassium bromide, 6g of sodium chloride, and 015g of the following chemical AO were added and kept at 60.0°C), and the following solutions (I) and (II) were simultaneously added at equal flow rates over 60 minutes. . (1) After the addition of the solution, a methanol solution (III) of the following sensitizing dye was added. In this way, a monodisperse cubic emulsion adsorbed with a dye having an average grain size of 0.45 μm was prepared.

After washing with water and desalting, add 20g of gelatin and adjust the pH to 6.4.
After adjusting the pAg to 7.8, chemical sensitization was performed at 60°0°C. The chemical used at this time was triethylthiourea 1
．． 6■ and 4-hydroxy-6-methyl-1,3,3a,
The aging time was 55 minutes using 100 μl of 7-tetrazaindene. The yield of this emulsion was 635 g.

(Drug A) CH.

(Sensitizing dye C) Emulsion (I) of photosensitive material 101 in <Example 2> was changed to emulsion (n), and the emulsion used was yellow emulsion 1.
Photosensitive materials 201 to 209 having the same compositions were prepared, respectively, except that the same amount of magenta emulsions 6 to 14 was used.

Dmax of the magenta dye image when 201 to 209 were exposed and developed in the same manner as the photosensitive material of <Example 2>,
Dmin is shown in Table 7.

In this way, a monodisperse silver bromide emulsion having an average grain size of 0.42 μm and adsorbing a dye was prepared.

After washing with water and desalting, add 20g of ash-treated ossein gelatin,
After adjusting pH to 6.4 and pAg to 8.2, 60°C
Sodium thiosulfate 9■, chlorauric acid 0.01
% aqueous solution 6-14-hydroxy-6-methyl-1,3,
3a, ? - Added 190■ tetrazaindene, 45
Chemical sensitization was performed for minutes.

The yield of emulsion was 635 g.

Table 7 <Example 4> The method for preparing the emulsion (ml) for the red-sensitive layer will be described.

A well-stirred gelatin aqueous solution (20 g of gelatin, 1 g of hydrium bromide and 0H (CL) in 80 ml of water)
The following solutions (I), (n) and (III) were simultaneously added at equal flow rates over 30 minutes to s (CHJ, 0.5 g of OH added and kept at 50° C.).

Color image (al Dye (b) Emulsion (I) of photosensitive material 101 in <Example 2> was changed to emulsion (III), and the emulsions used were changed from yellow emulsion 1 to an equal amount of cyan emulsion 15 to Photosensitive materials 301 to 308 having exactly the same composition except that the material was changed to No. 22 were prepared.

Dmax of the cyan dye image when 301 to 308 were exposed and developed in the same manner as the photosensitive material of <Example 2>,
Dmin is shown in Table 8.

<Table 8> Ru.

1゜ 2゜ 3゜ Display of incidents name of invention person who makes corrections Heisei Year! Application No. 201177 Heat-developable color photosensitive material Relationship with the incident

Claims (1)

[Scope of Claims] A heat-developable color photosensitive material having on a support at least a photosensitive silver halide, a binder, a reducing agent, and a non-diffusible dye-providing compound that releases a diffusible dye when reduced by the reducing agent. , the dye-donating compound is represented by the structure of the following general formula [I], and regarding at least one type of dye, the dye-donating compound that releases the dye is represented by the general formula [I].
A heat-developable color photosensitive material characterized in that two or more types of materials having different at least one of "BAL" and "Time" groups are used in combination. General formula [I] ▲There are mathematical formulas, chemical formulas, tables, etc.▼ In the formula, PWR is a group that releases ■Time■_tDye by being reduced, and Dye
represents a group that becomes a diffusible dye after being released. Time represents a group that is released from PWR as ■Time■_tDye and then releases Dye through a subsequent reaction. t represents an integer of 0 or 1. BAL is a ballast group that imparts diffusion resistance to the compound of general formula [I], and n represents an integer on one side.