JPH04155332A - Color diffusion-transfer photosensitive material - Google Patents

Abstract

PURPOSE:To obtain an instant color photosensitive material having a good color reproducibility and a high fineness by allowing its photosensitive layers to contain a combination of a photosensitive silver halogenide emulsion, an electrone doner, and a specific compound, providing intermediate layers between the photosensitive layers, and developing the layers by an alkaline processing liquid after exposure. CONSTITUTION:The photosensitive material has at least two photosensitive layers which differ from each other in their color-sensitivity on its supporting body. The photosensitive layers contain a combination of a silver halogenide emulsion, an electron doner, and a coloring matter donating compound to be reduced and expressed by an equation PWR - (Time)t - Dye, has plural intermedi ate layers which differ from each other in their addition-concentrations of diffusion-resistant reducing agent between them, and are developed by an alka line processing liquid containing an electron transfer agent after exposure. In the equation, PWR represents a group which is reduced to emit - (Time)t - Dye. Time represents a group which is once emitted from PWR as - (Time)t - Dye and then emits Dye through the following reaction. t represents integer of 0 or 1. Dye represents a coloring matter or its precursor.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a color diffusion transfer method, and in particular, a process in which a diffusible dye is released in response to a reaction in which silver halide is reduced to silver. It is possible to obtain color images with excellent color reproducibility and a low stain of at least 4 degrees using a diffusion-resistant dye-providing compound. It concerns instant color diffusion transfer light material coarseness.

(Background technology) A method for directly forming a positive image using a color diffusion transfer method is as follows: A) A direct positive silver halide emulsion and a diffusible dye are released in response to a reaction in which silver halide is reduced to silver. and B) a conventional silver halide emulsion (silver halide emulsion with two-ga-positive response).
and a diffusion-resistant compound that becomes diffusive in response to the reaction in which silver halide is reduced to silver, or releases a diffusible dye in reverse response to the reaction in which silver halide is reduced to silver. There is a method of using a combination of diffusion-resistant compounds (these are referred to as positive dye-providing compounds).

Method A) is described, for example, in British Patent No. 1,330.524, Japanese Patent Publication No. 4B-39,165, and US Patent No. 3,443.
No. 940, No. 4.474.867, No. 4.483.9
Compounds (DDR couplers) that are couplers that have a diffusible dye as a leaving group and that release a diffusible dye by a coupling reaction with an oxidized form of a reducing agent, as described in No. 14, etc.
, U.S. Patent No. 3.928.312, U.S. Patent No. 4. 053.
312, No. 4.055.428, No. 4,336゜322, etc., compounds that are reducible to silver halide and release a diffusible dye when silver halide is reduced. (DRR compound) is used.

In method B), ■ U.S. Patent No. 3.134.764, U.S. Pat.
．． No. 819, No. 3.597.200, No. 3.54
No. 4,545, same No. 3. 482. A dye developer in which a hydroquinone developer and a dye component are linked, as described in No. 972, etc. (This dye developer is diffusive in an alkaline environment, but becomes non-diffusible when it reacts with silver halide. As described in U.S. Pat. A compound that releases a diffusible dye by an intramolecular nucleophilic substitution reaction described in U.S. Patent No. 4,199.354, etc., and an intramolecular rewinding reaction of an isoxadurone ring as described in U.S. Patent No. 4,199.354, etc. Compounds that release diffusible dyes by
No. 0,746A2, U.S. Patent No. 4,783.396,
As described in Technical Report 87-6199 and the like, a non-diffusible compound that releases a diffusible dye by reacting with a reducing agent that remains unoxidized during development is used.

Among the above two methods, method B) is preferable in that it is easier to obtain higher sensitivity.

By the way, in order to obtain a multicolor image, it is necessary to combine dye-providing compounds exhibiting different hues with silver halide emulsions having different color sensitivities, and to stack the respective layers on a support. For example, in order to obtain a wide range of colors in the chromaticity diagram using the three primary colors yellow, magenta, and cyan, it is necessary to use a photosensitive layer containing at least three sets of silver halide emulsions each having a different color sensitivity.

In this case, if a highly diffusible color developing agent or an electron transfer agent (described later) is used as a reducing agent, the oxidized product of the color developing agent and the oxidized electron transfer agent generated as a result of development will diffuse into other photosensitive layers, causing the color to change. It may cause turbidity or decrease in concentration. In order to prevent this, it has been proposed to provide an intermediate layer and add to this layer a diffusion-resistant reducing compound capable of reducing the oxidized product of the diffusible reducing agent. (Unexamined Japanese Patent Publication No. 59-192247
No. 59-195238, etc.).

Furthermore, in order to improve storage stability when an electron transfer agent is contained in the photosensitive element and a diffusion-resistant reducing compound is added to the intermediate layer, a diffusion-resistant reducing compound is added between the intermediate layer and the photosensitive layer. A heat-developable color photosensitive material has been proposed that has a second intermediate layer containing no.

(Japanese Patent Application Laid-open No. 1-187549) However, by developing an alkaline processing composition containing an electron transfer agent between a photosensitive element and a second element coated on a separate support, In the case of formation, by adding a diffusion-resistant reducing compound to the intermediate layer, the reducing compound itself reacts with the reducible dye-providing compound to release the dye, and to release the photosensitive silver halide. This is due to a decrease in the efficiency of the reaction between the oxidized form of the electron transfer agent generated during development and the electron donor (when the photosensitive silver halide and the electron donor are present in separate layers, the efficiency decreases). It has been found that it is difficult to achieve the original objective of improving color reproduction, especially improving the reproducibility of highly pure colors and achieving a low minimum density.

(Objective of the Invention) The object of the present invention is to improve the color reproducibility of an instant color diffusion transfer light-sensitive material using a reducible dye-providing compound;
In particular, it aims to improve the purity of color.

(Means for Solving the Problem) The above object is to have at least two photosensitive layers having mutually different color sensitivities on a support, and this photosensitive layer contains a photosensitive silver halide emulsion, an electron donor, and a reducing agent. a plurality of interlayers containing a combination of reducible dye-providing compounds that release a diffusible dye when exposed to the light-sensitive layer, and having different concentrations of a substantially non-photosensitive, diffusion-resistant reducing agent between the photosensitive layers; This was achieved using an instant color diffusion transfer photosensitive material which has the following characteristics and is developed with an alkaline processing solution containing an electron transfer agent after exposure.

The diffusion-resistant reducing agent used in the intermediate layer is preferably a diffusion-resistant organic reducing agent, especially one that has lower reactivity with the reducible dye-donating compound than the electron donor used in combination, and one that has lower reactivity than the electron donor. It is also desirable that the reactivity of the electron transfer agent with the oxidized form of the electron transfer agent is low.

Preferably, the following general formula 4), (II) or /'' / / /′ Examples of the compound include (III).

General formula (1) ([) In the formula, XI is a hydroxyl group, -NR'R", -NH30
Represents 2R7.

R', R'', R'', R' hydrogen atoms; halogen atoms (e.g. chlorine atom, bromine atom, etc.); aliphatic groups (e.g. alkyl groups having 1 to 22 carbon atoms (e.g. methyl group, ethyl group, n- propyl group, isopropyl group, n
-butyl group, tert-butyl group, n-pentyl group, n
~decyl group, tert-decyl group, n-dodecyl group, 5
Straight chain or branched alkyl group such as ec-dodecyl group, tert-dodecyl group, n-pentadecyl group, 5ec-pentadecyl group, tert-pentadecyl group, 5ec-octadecyl group, tert-octadecyl group), carbon number 1-
22 substituted alkyl group [Substituted groups include halogen atom, hydroxyl group, alkoxy group, substituted amino group (including alkyl or arylsulfamoyl group and alkyl or carbamoyl group), cyano group, 2-hydroquine ethyl group, 3-methoxypropyl group, 3-n-butylsulfamoylpropyl group, etc.)], alkenyl group having 3 to 22 carbon atoms (e.g. allyl group, etc.)
, a cycloalkyl group having 5 to 12 carbon atoms (e.g. cyclohexyl group), an aralkyl group having 7 to 22 carbon atoms (e.g. benzyl group, phenythyl group, 4-methylphenylethyl group, etc.); aryl group (e.g. phenyl group) or hydroquine group, alkyl group, alkoxy group, phenyl group substituted with arylsulfoni/L4); alkoxy group, for example, an optionally substituted alkoxy group having 1 to 22 carbon atoms (for example, methoxy group, ethoxy group, n-
butoxy group, n-dodecyloxy group, etc.) naryloxy group, e.g. an optionally substituted aryloxy group having 6 to 22 carbon atoms (e.g. phenoxy group, 4-n
- butoxyphenyloxy group, etc.) Alkylthio group, for example, an optionally substituted alkylthio group having 1 to 22 carbon atoms (for example, methylthio group, ethylthio group, n-pentylthio group, n-dodecylthio group, n-pentadecylthio group,
Arylthio group, such as an optionally substituted arylthio group having 6 to 22 carbon atoms (e.g., phenylthio group, 4-nitrophenylthio group, etc.); Sulfonyl group, such as 1 to 30 carbon atoms Alkyl or arylsulfonyl groups (e.g. n-dodecylsulfonyl group, etc.); Acyl groups, e.g. acyl groups having 2 to 30 carbon atoms (e.g. stearoyl group); Carbamoyl groups, e.g. carbamoyl groups having 2 to 30 carbon atoms (e.g. 2, 5-di(1)amylphenoxyethylcarbamoyl group); Ester group, e.g., an ester group having 2 to 30 carbon atoms (e.g., p-(t)octylbenzyloxycarbonyl group); ; Sulfamoyl group, e.g., having 1 to 30 carbon atoms Sulfamoyl group (e.g. octadecylsulfamoyl group, etc.); Amide group, e.g. optionally substituted amide group having 2 to 22 carbon atoms (e.g. acetamido group, benzoylamino group, α-(2,4-di-t-7) Milfenoxine butanamide ureido group, such as an optionally substituted ureido group having 1 to 22 carbon atoms (for example, N,N-diethylureido group); Urethane group, such as a substituted ureido group having 2 to 22 carbon atoms Represents a good urethane group (for example, phenoxycarbonylamino group, butoxycarbonylamino group, etc.); sulfo group; carboxyl group, etc.

R' and R' represent a hydrogen atom, an aliphatic group, or an aryl group (the aliphatic group and aryl group have the same definition as in R'-R').

R1 is an aliphatic group (for example, an alkyl group having 1 to 22 carbon atoms (for example, methyl group, ethyl group, n-propyl group, n-butyl group, n-octyl group, n-decyl group, n-dodecyl group, i
- straight chain and branched alkyl groups such as pentyl group), substituted alkyl groups having 1 to 22 carbon atoms [those having a halogen atom (chlorine atom or bromine atom) as a substituent, e.g.
-chloroethyl group, 2-bromoethyl group, 3-chloropropyl group, 4-bromobutyl group, dichloromethyl group, etc.; those with hydroxy group, such as 2-hydroxyethyl group, 3-hydroxypropyl group, 4-hydroquine-butyl group, 6-hydroxyhexyl group, etc.; those containing sulfonyl groups, such as ethanesulfonylmethyl group, n-butylsulfonylethyl group, ryorylsulfonylbutyl group; alkoxy groups (such as methoxy group, ethoxy group, n
-butoxy group, n-hexyloxy group, etc.), such as methoxymethyl group, methoxyethyl group, ethoxyethyl group, n-butoxyethyl group, 3-methoxypropyl group, n-hexyloxoethyl group; alkylthio Those with groups (e.g. methylthio group, ethylthio group, n-hexylthio group, etc.), such as methylthiomethyl group, methylthioethyl group, 3-ethylthiopropyl group,
such as n-hexylthioethyl group; or those having a substituted amino group, such as 4-(N.

N-dimethylamino)butyl group, 5-acetamidopentyl group, 4-methinesulfonylaminobutyl group, anilinomethyl group]; Cycloalkyl group (e.g. cyclohexyl): may have a substituent having 7 to 22 carbon atoms aralkyl group (e.g. benzyl group, 4-methylbenzyl group, 4-chlorobenzyl group, phenethyl group, 4-methylphenylethyl group, etc.), substituted amino group (e.g. alkyl group having 1 to 20 carbon atoms or aryl group) or di-substituted amino groups (e.g. dipropylamino group), or aryl groups such as phenyl groups and substituted phenyl groups (having halogen atoms (e.g. chlorine atom, bromine atom) as substituents, e.g. 4- Chlorophenyl group, 4-bromophenyl group, 2-chlorophenyl group, etc.; those with hydroxy group, such as 2-hydroxyphenyl group, 4-
Hydroxyphenyl group, 2,5-dihydroxyphenyl group, etc.; Those with an optionally substituted alkyl group, such as 4-methylphenyl group, 4-i-propylphenyl group
, 4n-dodecylfninyl group, 2-chloro-4-methylphenyl group, 4-chloromethylphenyl group, 2,5-dihydroxy-4-alkylphenyl group, etc.; those having an optionally substituted alkoxy group, such as 4- Methoxyphenyl group, 4-ethoxyphenyl group, 4-n-propoxyphenyl group, 2-methyl-4-methoxyphenyl group,
3-methoxyphenyl group, 4-n-pentyloxophenyl group, 4-n-dodecyloxophenyl group, 3-n-
Those with an optionally substituted alkylthio group such as a pentadecyloxophenyl group, such as a 4-methylthiophenyl group, 4-ethylthiophenyl group, 4-n-butylthiophenyl group, 3-n-hexylthiophenyl group , 3-
n-decylthio-phenyl group, etc.; those having an alkoxycarbonyl group, such as 4-methoxycarbonylphenyl group, 4-ethoxycarbonyl-2-chlorophenyl group; those having a carboxy group, such as 4-carboxyphenyl group; carbamoyl group For example, 4
-carbamoylphenyl group, 4-methylaminocarbonylphenyl group, 2-chloro-4-(N,N-diethylaminocarbonyl)phenyl group, etc.; substituted amino group (W substituents include alkyl group, aralkyl group, phenyl group,
Those having an acyl group derived from carboxylic acid or sulfonic acid (each of these substituents may be further substituted), such as 4-methylaminophenyl group, 4-(N,
N-diethylaminophenyl L4-(N-ethyl-N-
benzylamino) phenyl group, 4-acetamidophenyl group, 4-methanesulfonylaminophenyl group, 3-n
-heptanoylaminophenyl group, 3-phenylsulfonylaminophenyl group, etc.; those having a nitro group, such as 4-nitrophenyl group, 4-nitro-2-methylphenyl group, 2-chloro-4-nitrophenyl group, etc.; Those with a cyano group, such as 4-cyanophenyl group; Those with an acyl group, such as 4-acetylphenyl group, 2
-Methyl-4-acetylphenyl L4-benzoylphenyl group, etc.; those having a sulfonyl group, such as 4-methanesulfonylphenyl group, 2-chloro-4-ethanesulfonylphenyl group, 4-phenylsulfonylphenyl group, 3-(2 , 5-dihydroxy-4-tert-pentylphenyl)sulfonylphenyl group, etc.; those having a sulfamoyl group, such as 3-sulfamoylphenyl group, 3-(n-butylaminosulfonyl)phenyl group, 2
-chloro-4-phenylaminosulfonylphenyl group; and those having a sulfo group, such as 4-sulfophenyl group, 2-chloro-5-sulfophenyl group, etc.).

R1+ is an aryl group (details of the aryl group are the same as R7)
represents.

R drop R2O, R direct 1, RI2) R1ff is a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an alkoxy group, an aryloxy group, an aralkyl group, an acyl group, an acylamino group, an alkylsulfonylamino group, an arylsulfonylamino group, respectively. group, aryloxycarbonyl group, alkoxy group, N-substituted rubamoyl group, or N-W
represents a substituent selected from substituted sulfamoyl groups,
These substituents may further include a hydroxyl group, carboxyl group, sulfo group, ester group, alkoxy group, aryloxy group, cyano group, sulfamoyl group, carbamoyl group, acylamino group, alkylsulfonylamino group, arylsulfonylamino group, ureido group, or It may be substituted with a laid group.

x"Sx', x' represents a group selected from the same groups as X' or a group selected from the same groups as R1, and at least one of x2 and XI represents a group selected from the same groups as XI, When both X2 and XI are groups selected from the same groups as XI, χ3 represents a group selected from the same groups as R1.

R1 and R2) R2 and X4 may jointly form a condensed ring, and Rs and Rh may jointly form a heterocycle.

The compounds represented by formulas (1) to (I[[) have R1 to Roe in the compound to make the compound itself diffusion resistant.
The total number of carbon atoms in and X'-X' is preferably at least 8 or more, more preferably 10 or more, still more preferably 15 or more. As another means of making a compound resistant to diffusion, the compounds of general formulas (1) to (I[I) may form a bis-form or a tris-form connected by R1-R13), or R I - There may be oligomers or polymers linked to the polymer by Rl 3.

-V Among formulas (1) to (III), preferred for the purpose of the present invention are general formulas (1) and (It), and general formula (24) is particularly preferred.

-IIIQ In formula (1), preferred as XI are a hydroxyl group and a -NH3O□R7 group, with a hydroxyl group being particularly preferred.

In general formula (1), it is preferable that X3 is a group selected from the same groups as R', and x2) x3 is a group selected from the same groups as R1, and X4 is a group similar to x1. Particularly preferred is a group selected from.

Further, the diffusion-resistant reducing agent added to the intermediate layer may be the same as the electron donor described below.

Specific examples of diffusion-resistant reducing agents are listed below, but the present invention is not limited thereto.

(1) CHz C
HsυH (9) (t)CsHzH H fl H 1l Ur! R R R H H3 H H R H υh I'l)I υn CH.

As for the synthesis method of the above-mentioned diffusion-resistant reducing agent, methods described in the following patents can be used.

U.S. Patent No. 2,360.290, 2.403°721
No. 2.418.618, No. 2,701.197, No. 2.728.659, No. 2.735.765,
JP 2.732.300, JP 3.700.453, JP 59-37497, JP 59-202465, JP 55-72158, JP 55-43521, JP 5
7f-22237, 5B-156932, 59
No. -5247, No. 62-103638, OLS 2
No. 732971 etc.

Methods for adding the diffusion-resistant reducing agent to the intermediate layer include an oil dispersion method, a polymer dispersion method, a fine particle dispersion method, etc., and any of these methods may be used.

As the binder for the intermediate layer of the present invention, gelatin or a gelatin derivative, a polythanecalide such as cellulose derivative dextran, a natural substance such as gum arabic, polyvinyl acetal (preferably with a degree of acetalization of 20
% or less, for example, polyvinyl butyral), polyacrylamide, polyvinyl pyrrolidone, ethyl cellulose, and polyvinyl alcohol (preferably with a saponification rate of 75% or more).

Furthermore, two or more of these binders may be used in combination as required.

The amount of the above-mentioned diffusion-resistant reducing agent added is the total amount of the plurality of intermediate layers provided between photosensitive layers having different color sensitivities.
Support In (0.05 to 50 mmol per, preferably 0.1 to 10 mmol, 0.01 to 10 mmol per 1 g of binder)
50 mmol, preferably 0.1-5 mmol.

The method of adding a diffusion-resistant reducing agent to a plurality of intermediate layers provided between photosensitive layers having different color sensitivities is preferably such that 70% or more of the total reducing agent is added to the intermediate layer to which the reducing agent is added the most. It is to be.

In the present invention, it is preferable to provide a combination of an intermediate layer not containing a diffusion-resistant reducing agent and an intermediate layer containing a diffusion-resistant reducing agent. In this case, the intermediate layer containing a diffusion-resistant reducing agent is provided on both sides. Providing an intermediate layer that does not contain a diffusible reducing agent is particularly preferred for achieving the objectives of the invention.

When there are three sets of photosensitive layers each having a different color sensitivity, the plurality of intermediate layers described above are provided between each of these photosensitive layers. In this case, the diffusion-resistant reducing agent added to each intermediate layer may be the same or different compounds.

In the present invention, a reducible dye-donating compound is combined with an electron donor, a binder, and a silver halide emulsion to form one unit of a photosensitive layer. The reducible dye-providing compound may be added to the same layer as the silver halide emulsion, but it is preferable to add them separately to adjacent layers. In the latter case, the layer of the reducible dye-providing compound From the viewpoint of sensitivity, it is preferable to place the compound in the lower layer of the silver halide emulsion layer (viewed from the exposed surface). Although the compound can be added to either the silver halide emulsion layer or the reducible dye-providing compound layer, it must be present in the reducible dye-providing compound layer, especially when it is co-emulsified with the dye-providing compound. It is preferable to add

The effects of the present invention are particularly remarkable when the silver halide emulsion and the reducible dye-providing compound are added to separate layers.

Furthermore, the effect of the present invention is that when an image is formed by spreading an alkaline processing composition containing an electron transfer agent between a photosensitive element and a second element coated on a separate support, When the diffusion-resistant reducing compound added to the intermediate layer is developed with an alkaline processing composition, the dissociated reducing compound itself reacts with the reducible dye-providing compound to release the dye, and the photosensitive halogen This is achieved by suppressing the decrease in the efficiency of the reaction between the oxidized form of the electron transfer agent and the electron donor generated by the development of silver oxide.
This effect is exhibited when the amount of water provided during development is large and the compound has high diffusibility. More specifically, the amount of water provided during development is at least twice the weight of the total coating film on the photosensitive element and the image receiving element, more preferably from the amount of water corresponding to the maximum expansion volume of the total coating amount to the total weight. This effect is particularly noticeable when the amount is twice or more the weight of the coating film.

Furthermore, the intermediate layer of the present invention may contain solid particles. For example, titanium dioxide, zinc oxide, calcium oxide,
Various white pigments such as calcium carbonate, magnesium carbonate, barium sulfate, aluminum oxide, and silicon dioxide, black pigments such as carbon black, and other organic and inorganic colored pigments can be used. Further, metal powder such as ferrite, aluminum powder, copper powder, graphite powder, etc. can be used.

Polymer particles can also be used as solid particles in the intermediate layer of the present invention.

These solid particles may be used in combination of two or more types, if necessary.

The average particle size of the solid particles to be contained is 0.005 μm ~
1.0 μm, preferably 0.01 μm to 0.5
It is μm.

The content of solid particles in the intermediate layer of the present invention is preferably 5% by weight or more, more preferably 20 to 100% by weight, based on the binder of the intermediate layer.

Next, each component included in the present invention will be explained.

Supports used in the present invention include transparent supports, white supports, and black supports, which are normally used as smooth photographic supports. As the transparent support, polyethylene terephthalate, cellulose acetate, polycarbonate, etc., having a thickness of 50 to 350 μm, preferably 70 to 21 μm, are used. The transparent support may contain a minute amount of pigment such as titanium dioxide or a minute amount of dye to prevent light piping.

The white support as used in the present invention refers to a support that is white at least on the side on which the dye image-receiving layer is coated, and any support can be used as long as it has sufficient whiteness and smoothness. For example, titanium oxide with a particle size of 0.1 to 5μ,
Polymer films whitened by the addition of white pigments such as barium acid or zinc oxide or the formation of microvoids by stretching, such as films or synthetic papers made of polyethylene terephthalate, polystyrene, or polypropylene formed by sequential biaxial stretching in a conventional manner; Moreover, paper laminated with polyethylene, polyethylene terephthalate, polypropylene, etc. on both sides is preferably used. A white pigment such as titanium white may be kneaded into this laminate layer.

The thickness of the support is 50 to 350 μm, preferably 70 to 2
It is 10 μm, more preferably 80 to 150 μm. Further, if necessary, a light-shielding layer may be provided on the support. For example, a support formed by laminating polyethylene containing a light-shielding agent such as a carbon blank on the back side of a white support is used.

The black support contains a light shielding agent such as carbon black and has a thickness of 50 to 350 μm, preferably 70 to 210 μm.
Polyethylene terephthalate, cellulose acetate, polycarbonate, polystyrene, polypropylene, etc., or a paper support with a thickness of 50 to 400 μm, preferably 70 to 250 μm, containing a light shielding agent such as carbon blank, is covered with polyethylene, polyethylene terephthalate, polypropylene, etc. A laminated one is preferably used.

As a carbon blank raw material, for example, Donnel V
oest "Carbon Black" Mar
cel Dekker, Inc.

Any manufacturing method can be used, such as the channel method, thermal method, and furnace method as described in (1976). The particle size of the carbon blank is not particularly limited, but is preferably between 90 and 1800 particles.The amount of black pigment added as a light-shielding agent may be adjusted depending on the sensitivity of the photosensitive material to be light-shielded, but the optical density A value of about 5 to 10 is desirable.

When using a black support or when the white support is insufficient in whiteness, it is necessary to provide a white light reflecting layer between the support and the dye image receiving layer. White pigments such as titanium oxide, barium sulfate, zinc oxide,
Preferably, a layer containing hollow polymer latex is provided.

The layer having a neutralization function used in the present invention according to BJ4' is a layer containing an acidic substance in an amount sufficient to neutralize the alkali brought in from the treatment composition, and if necessary, a neutralization rate adjusting layer. It may also be of a multilayer structure consisting of layers such as a timing layer, an adhesion reinforcing layer, and the like. Preferred acidic substances are those containing p)(a 9 or less acidic groups (or precursor groups that provide such acidic groups upon hydrolysis), more preferably those described in U.S. Pat. No. 2,983,606. Higher fatty acids such as oleic acid, U.S. Patent No. 3.362.8
Polymers of acrylic acid, methacrylic acid or maleic acid and their partial esters or acid anhydrides as disclosed in FR 2,290.699; Acid ester copolymers; U.S. Pat. No. 4,139.383 and Research Disclosure
) & 16102 (1977).

In addition, U.S. Patent No. 4.088.493, Japanese Patent Application Laid-open No. 1973-
No. 153,739, No. 53-1,023, No. 53-4
．． No. 540, No. 53-4, 541, No. 53-4, 54
Acidic substances disclosed in No. 2 and the like can also be mentioned.

Specific examples of acidic polymers include ethylene, vinyl acetate,
These include copolymers of vinyl hexamers such as vinyl methyl ether and maleic anhydride, n-butyl esters thereof, copolymers of butyl acrylate and acrylic acid, cellulose acetate, hydrogen phthalate, and the like.

The polymeric acid can be used alone or in combination with a wood-philic polymer. Examples of such polymers include polyacrylamide, polyvinylpyrrolidone, polyvinyl alcohol (including partially saponified products), carboxymethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, polymethyl vinyl ether, and the like. Among these, polyvinyl alcohol is preferred.

Furthermore, a polymer other than a hydrophilic polymer, such as cellulose acetate, may be mixed with the polymeric acid.

The amount of polymeric acid applied is controlled by the alkaline IL developed on the photosensitive element. The equivalent ratio of polymer acid to alkali per florescence area is preferably 0.9 to 2.0. If the amount of the polymeric acid is too small, the hue of the transferred dye may change or staining may occur on the white background, while if it is too large, problems such as a change in hue or a decrease in light resistance may occur.

A more preferable equivalent ratio is 1.0 to 1.3. When mixed with a wood-philic polymer, too much or too little of the hydrophilic polymer will deteriorate the quality of the photograph. The weight ratio of hydrophilic polymer to polymeric acid is between 0.1 and IO2, preferably between 0.3 and 3.0.

Additives can be incorporated into the neutralizing layer of the present invention for various purposes. For example, hardening agents known to those skilled in the art can be added to harden this layer, and polyvalent hydroquine compounds such as polyethylene glycol, polypropylene glycol, glycerin, etc. can be added to improve the brittleness of the film. Other antioxidants, as necessary.
(C) Neutralized timing layer The timing layer used in combination with the neutralized layer may include, for example, gelatin, polyvinyl alcohol, partially acetalized polyvinyl alcohol, cellulose acetate, partially Polymers that lower alkali permeability, such as polyvinyl acetate hydrolyzed to Latex polymers; polymers having lactone rings are useful.

Among them, Japanese Patent Application Publication No. 54-136328, U.S. Patent No. 4,
No. 267.262, 4. 009. No. 030, 4
Timing layer using cellulose acetate disclosed in JP-A No. 54-128335, No. 56-69.629, No. 57-6.843, U.S. Pat. No. 4.056°394 No. 4,061.496, No. 4,199.362, No. 4,250,243,
A latex polymer made by copolymerizing a small amount of a hydrophilic comonomer such as acrylic acid, disclosed in U.S. Pat. Polymers having disclosed lactone rings; Others JP-A No. 56-25735, No. 5
Particularly useful are the polymers disclosed in EP 6-97346, EP 57-6842, EP 31.957A1, EP 37,724A1, EP 48.412AI, and the like.

In addition, those described in the following documents can also be used.

U.S. Pat. No. 3,421.893, 3. 455°68
No. 6, No. 3,575,701, No. 3,778.265
No. 3,785.815, No. 3847.615, No. 4,088,493, No. 4.123,275,
No. 4,148,653, No. 4,201,587, No. 4,288.523, No. 4,297,431, OLS No. 1,622,936, No. 2,16
2゜277, Re5earch Disclosure
e15. 151 to 162 (1976).

JP-A No. 59-202463, U.S. Patent No. 4°297.
No. 431, No. 4,288.523, No. 4.201.5
No. 87, No. 4.229,516, JP-A-121-1987
No. 438, No. 56-166212, No. 55-4149
No. 0, No. 55-54341, No. 56-102852, No. 57-141644, No. 57-173834,
No. 57-179841, West German Patent Application Publication (OLS)
2゜910.271, European Patent Application Publication EP3195
7 A 1 , Re5earch Disclosure
Examples include those described in e k 18452 and the like.

The neutralization timing layer may be a single layer or multiple layers.

In addition, timing layers made of these materials are covered by, for example, U.S. Patent No. 4,009,029, West German Patent No.
) 2,913.164, 3.014.672, JP-A-54-155837, JP-A-55-138745,
It is also possible to incorporate the development inhibitor and/or its precursor disclosed in U.S. Pat. No. 4,201,578, the hydroquinone precursor disclosed in U.S. Pat. be.

One animal υ" old growth image 1 The dye-receiving layer used in the present invention contains a mordant in a hydrophilic colloid. This may be a single layer or a multilayer structure in which mordants having different mordant powers are applied in layers. Regarding this, JP-A No. 61-25255
1.

As the mordant, a polymer mordant is preferred.

The polymer mordants used in the present invention are polymers containing secondary and tertiary amino groups, polymers having nitrogen-containing heterocyclic moieties, polymers containing these quaternary cation groups, etc., and those having a molecular weight of 5,000 or more are particularly preferable. is 10.00
It is 0 or more.

For example, U.S. Pat. No. 2,548,564, U.S. Pat.
．． No. 430, No. 3.148,061, No. 3.756,
Vinylpyridine polymers and vinylpyridinium cationic polymers disclosed in US Pat. No. 814, etc.; vinylimidazolium cationic polymers disclosed in US Pat. No. 4,124.386, etc.: US Pat.
No. 25.694, No. 3,859.096, No. 4. 1
Polymer mordants capable of crosslinking with gelatin and the like as disclosed in U.S. Pat. No. 28.538 and British Patent No. 1.277.453;
No. 852, No. 2,798.063, Japanese Unexamined Patent Publication No. 1983-11
No. 5,228, No. 54-145゜529, No. 54-1
No. 26,027, No. 54-155.835, No. 56-
Aqueous sol-type mordants disclosed in US Pat. No. 17,352, etc.; water-insoluble mordants disclosed in US Pat. No. 3,898,088, etc.; US Pat. No. 4,168,976
Reactive mordants capable of forming a covalent bond with the dyes disclosed in U.S. Pat. No. 3,709,690, U.S. Pat. No. 3,642,482, No. 3,488,706,
No. 3,557,066, No. 3,271.147, No. 3,271゜148, JP-A-53-30328
No. 52-155528, No. 53-125, No. 5
Examples thereof include mordants disclosed in No. 3-1024, No. 53-107,835, British Patent No. 2.064.802, and the like.

Others: U.S. Patent No. 2,675,316, U.S. Patent No. 2゜882
．． Mention may also be made of the mordants described in No. 156.

Among these mordants, those that are difficult to migrate from the mordant layer to other layers are preferred, such as those that crosslink with a matrix such as gelatin, water-insoluble mordants, and aqueous sol (
Alternatively, a latex dispersion) type mordant is preferred, particularly a latex dispersion mordant, with a particle size of 0. O1
-2μ, preferably 0.05-0.2μ.

The coating amount of the mordant varies depending on the type of mordant, the content of quaternary cation groups, the type and amount of the dye to be mordant, the type of binder used, etc., but is 0.5 to 10 g/I, preferably 1.0 to 5 g/I. .0g/FI? , particularly preferably 2 to 4 g/
ml.

Hydrophilic colloids used in the image-receiving layer include gelatin,
Polyvinyl alcohol, polyacrylamide, polyvinylpyrrolidone, etc. are used, but gelatin is preferred.

Anti-fading agents may be used in the image-receiving layer, such as antioxidants, ultraviolet absorbers, or certain metal complexes. These may be substantially contained in the image-receiving layer and may be added to other layers if an effect can be obtained.

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

Benzotriazole compounds (
U.S. Patent No. 3,533,794, etc.), 4-thiazolidone compounds (U.S. Patent No. 3,352,681, etc.)
, benzophenone compounds (JP-A-46-2784, etc.), and other JP-A-54-48535, JP-A-62-13
There are compounds described in No. 6641, Nos. 61 to 88256, and the like.

Further, the ultraviolet absorbing polymer described in JP-A No. 62-260152 is also effective.

As metal complexes, U.S. Patent Box 4.241.155,
No. 4.245.018, columns 3 to 36, No. 4,25 of the same
4.195, columns 3 to B, JP-A-62-174741, JP-A-61-88256, pages (27) to (29), JP-A-1-75568, JP-A-63-199248, etc. There are compounds that have

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

An anti-fading agent for preventing fading of the dye transferred to the image-receiving element may be included in advance in the image-receiving element, or
The image receiving element may be supplied externally, such as from the photosensitive element or the processing composition.

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

Optical brighteners may be used in the light-sensitive element and the image-receiving element. In particular, it is preferable to incorporate the optical brightener into the image-receiving element, or to incorporate it into the photosensitive element or the processing composition and supply it to the image-receiving element during the processing process. As an example, K, Veen
kataraman Q rThe Chemistry
yof 5ynthetic Dyes J Volume V Volume 8
Examples include compounds described in Chap. More specifically, examples include stilhene compounds, coumarin compounds, biphenyl compounds, benzoxacylyl compounds, naphthalimide compounds, pyrazoline compounds, and carbostyryl compounds.

It can be used in combination with optical brighteners and anti-fade agents.

11 In the present invention, if necessary, the photosensitive element and the image receiving element are separated after processing. 4. A release layer is provided for peeling off. Therefore, this release layer must be easily peelable after processing.

Materials for this purpose include, for example, JP-A-47-823
7, US Pat. No. 51-220727, US Pat. No. 59-229555, US Pat. No. 49-4653, US Pat.
51B, JP-A-49-4334, JP-A-56-65133,
No. 45-24075, U.S. Pat. No. 3,227,550, No. 27
59825, 4401746, 4366227, etc. can be used.

One specific example is a water-soluble (or alkali-soluble) cellulose derivative. Examples include hydroxyethylcellulose, cellulose acetate-phthalate, plasticized methylcellulose, ethylcellulose, cellulose nitrate, carboxymethylcellulose, and the like. Other examples include various natural polymers such as alginic acid, pectin, gum arabic, and the like. Various modified gelatins such as acetylated gelatin and phthalated gelatin can also be used. Furthermore, other examples include water-soluble synthetic polymers such as polyvinyl alcohol, polyacrylate, polymethyl methacrylate, polybutyl methacrylate, or copolymers thereof.

The release layer may be a single layer or, for example,
It may be composed of a plurality of layers as described in No. 220727 and No. 60-60642.

■Second emulsion■ In the present invention, a photosensitive layer consisting of a silver halide emulsion layer in combination with a dye image-forming material is provided.

Its constituent elements will be described below.

(1) Dye image-forming substance The dye image-forming substance used in the present invention (hereinafter referred to as a reducible dye-providing compound) does not itself release a dye in connection with silver development, but when reduced, It releases pigment. This type of compound can be used in combination with an electron donor to release a diffusible dye imagewise by reaction with the remaining electron donor which has been imagewise oxidized by silver development. Regarding atomic groups having such functions, for example, US Pat. No. 4,183.753. 4,142.
891, 4,278,750, 4,139.379
, 4,218.368, Japanese Patent Publication No. 53-110827,
U.S. Patent No. 4,278,750, U.S. Patent No. 4,356.249,
4.358.525, JP 53-110827, JP 54-130927, JP 56-164342), U.S. Pat. .

The reducible dye-providing compound used in the present invention is preferably a compound represented by the following general formula (C-1).

PWR-(Time), -Dye General formula (C-13 In the formula, PWR is reduced to -(Time)
t Represents a group that releases Dye.

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

t represents the number of glances of 0 or 1.

Dye represents a dye or its precursor.

First, PWR will be explained in detail.

PWR is U.S. Pat. No. 4,139,389, or U.S. Pat. No. 4,139,379, U.S. Pat.
Electron-accepting center and intramolecular nucleophilic substitution reaction in a compound that releases a photographic reagent by an intramolecular nucleophilic substitution reaction after being reduced as disclosed in JP-A-59-185333 and JP-A-57-84453 It may correspond to the part including the center, or it may correspond to the part including the center, or as described in US Pat. As disclosed, it corresponds to the part containing the electron-accepting quinonoid center and the carbon atom linking it to the photographic reagent in a compound that releases the photographic reagent by an electron transfer reaction in the molecule after being reduced. Also, Japanese Patent Publication No. 56-14253
No. 0, U.S. Pat. No. 4,343,893, U.S. Patent No. 4. 619
．． No. 884, the single bond is cleaved to release the photographic reagent after reduction, and the aryl group substituted with an electron-withdrawing group in the compound and the atom connecting it to the photographic reagent (sulfur atom or carbon atom or It may also correspond to a moiety containing a nitrogen atom), and US Pat.
It may correspond to a moiety containing a nitro group in a nitro compound that releases a photographic reagent after electron acceptance and a carbon atom that connects the photographic reagent with the nitro group, as disclosed in No. 50,223. , U.S. Patent 4,609,610
It may correspond to the geminal dinitro moiety in the dinitro compound that detaches the photographic reagent after accepting electrons and the carbon atom-containing moiety that connects it to the photographic reagent, as described in the above issue.

In addition, a compound having an electron-withdrawing group in one molecule as described in U.S. Patent No. 4,840,887,
271344, a po-x bond (X
is the same as above) and an electron-withdrawing group, c-x' in one molecule described in JP-A No. 63-271341.
Examples thereof include compounds having a bond (X' is synonymous with X or represents -8O3-) and an electron-withdrawing group.

In order to more fully achieve the object of the present invention, the general formula (C
Among the compounds of -1), those represented by the general formula CCU are preferred.

General formula (CII) (Time(t Dye is bonded to at least one of RIOI, Rlat, or EAG.

The portion corresponding to P3MH in general formula (CII) will be explained.

゛X represents a group (-N (R1'')-) containing an oxygen atom (-0-), a sulfur atom (-S-), or a nitrogen atom.

R1111, R16N and R2O3 represent a group other than a hydrogen atom or a simple bond.

Groups other than hydrogen atoms represented by R11, R10t, and R162 include alkyl groups, aralkyl groups, fulkenyl groups, alkynyl groups, aryl groups, heterocyclic groups, sulfonyl groups, carbamoyl groups, sulfamoyl groups, etc.
These may have a substituent.

R101 and R10'' are preferably substituted or unsubstituted alkyl groups, alkenyl groups, alkynyl groups, aryl groups, heterocyclic groups, acyl groups, sulfonyl groups, etc. R1a
The number of carbon atoms in + and R1°3 is preferably 1 to 40.

R102 is preferably a substituted or unsubstituted acyl group or sulfonyl group. Examples are the same as the acyl group and sulfonyl group mentioned in the case of RI0' + R''3. The number of carbon atoms is preferably 1 to 40.

R"' % R"" and R103 may be bonded to each other to form a five- to six-membered ring.

As X, oxygen is particularly preferred.

RAG will be described later.

Furthermore, in order to achieve the object of the present invention, the general formula (CII
) Among the compounds represented by the formula (CI[l), those represented by the general formula (CI[l) are preferred.

General formula (CI) (Time)-tDye binds to at least one of Rlo- and EAG.

X has the same meaning as above.

R10' represents an atomic group bonded to X or a nitrogen atom to form a five- to six-membered monocyclic or condensed heterocycle including the nitrogen atom.

In the general formulas [CU] and [CI[I], EAG represents a group that accepts electrons from a reducing substance and is bonded to a nitrogen atom. EAG is preferably a group represented by the following general formula (A).

General formula (A) customer In general formula (A), Z represents -C-5ub or -N-.

vl, is 2. ．． It represents an atomic group that forms a three- to six-membered aromatic group together with 21, and n represents an integer from 3 to 3.

Vs; Zs-1Va; Zs Za-1■,
;Z 3 Z 4Z 5-1V6;Z3 Za
-Zs Zb-1v, =Z3-Z, -2. -Z.

-Z, -1Vs; Zx Za -Zs
Za -Z and Z s-.

Sub Sub Zz Zs each represents -C-2-N-2-〇Sub -1-S-1 or -SO,-, and each Sub represents a simple bond (pi bond), a hydrogen atom, or the following Sub representing a substituent may be the same or different, and may be bonded to each other to form a ring or six-membered saturated or unsaturated carbocycle or heterocycle. Good too.

In general formula [A], the sum of the Hammett substituent constant sigma para of the substituents is +0.50 or more, more preferably +0.
Select Sub so that it is 70 or more, most preferably +0°85 or more.

EAG is preferably an aryl group or a heterocyclic group substituted with at least one electron-withdrawing group. Substituents bonded to the atomyl group or heterocyclic group of EAG can be used to adjust the physical properties of the entire chemical compound. Examples of the physical properties of the entire compound include ease of accepting electrons, water solubility, oil compatibility, diffusibility, sublimation, melting point, dispersibility in binders such as gelatin, and nucleophilic groups. It can be used to adjust the reactivity toward electrophilic groups and the reactivity toward electrophilic groups.

Specific examples of EAC are U.S. Pat. No. 4.783.396,
It is described in European Patent Publication No. 220746A2 No. 6-7.

Time may lead to the cleavage of nitrogen-oxygen, nitrogen-nitrogen or nitrogen-sulfur bonds, resulting in D
Represents a group that releases ye.

Various groups represented by Time are known, for example, JP-A-61-147244, pages (5)-(6), JP-A-61-147244.
No. 36549 (8) page - (Foundation) page, JP-A-62-215
Examples include groups described in No. 270.

The dye represented by the dye may be a ready-made dye or it may also be a dye precursor that can be converted into a dye in a photographic processing step or an additional processing step, and the final image dye may or may not be metal chelated. good. Typical dyes include metal chelated or non-metal chelated dyes such as azo dyes, azomethine dyes, anthraquinone dyes, and phthalocyanine dyes. Among these, azo cyan, magenta and yellow dyes are particularly useful.

Example of yellow dye: U.S. Pat. No. 3,597,200, U.S. Pat. No. 3,309°199
No. 4,013,633, No. 4,245.028, No. 4,156,609, No. 4゜139.383,
No. 4,195,992, No. 4,148.641, No. 4,148,643, No. 4336322; JP-A No. 5
No. 1-114930, No. 56-71072; rRe
searchDisclosureJ ml 7630
(197B) and No. 16475 (1977).

Example of magenta dye: U.S. Pat. No. 3,453.107, U.S. Pat. No. 3,544.545
No. 3,932,380, No. 3.931.144, No. 3,932,308, No. 3954.476,
4,233,237, 4,255,509, 4,250.246, 4,142,891, 4
, 207,104, 4,287,292; JP-A-52-106.727, 52-106727, 53-23,628, 55-36,804, 5
No. 6-73,057, No. 56-71060, No. 55-
What is described in No. 134.

Examples of cyan dyes: U.S. Pat. No. 3,482.972, U.S. Pat.
No. 0, No. 4,013,635, No. 4.268.625
No. 4,171,220, No. 4242.435, No. 4,142,891, No. 4.195,994,
No. 4,147,544, No. 4,148,642; British Patent No. 1,551゜138; Japanese Unexamined Patent Publication No. 54-99431
No. 52-8827, No. 53-47823, No. 5
No. 3-143323, No. 54-99431, No. 56-
No. 71061; European Patent (EPC) 53°037
No. 53,040; Re5earch Discl.
osurel 7. No. 630 (197B) and No. 16.475 (1977).

Further, as a type of dye precursor, a diffusion-resistant dye-donating substance bonded with a dye whose absorption spectrum is temporally shifted can be used during storage and exposure of the light-sensitive material. A dye whose absorption spectrum has been shifted temporally (hereinafter referred to as a -time shifted dye) is a dye whose absorption spectrum has been changed to a different one from the original absorption spectrum when observed as an image. This means that the original absorption spectrum may be obtained at the same time as the dye is released from the diffusion-resistant dye-donor substance, or the original absorption spectrum may be obtained during development independently of the release; The original absorption spectrum may be obtained after reaching the image receiving layer.

The pigments used here are yellow, magenta, cyan,
These dyes can be classified structurally into nitro and nitroso dyes, azo dyes (benzene azo dyes, naphthalene azo dyes, heterocyclic azo dyes, etc.),
Stilbene dyes, carpaum dyes (diphenylmethane dyes, triphenylmethane dyes, xanthine dyes, acridine dyes, etc.), quinoline dyes, methine dyes (polymethine dyes, azomethine dyes, etc.), thiazole dyes, quinoneimine dyes (azine dyes, oxazine dyes, thiazine dyes) ), lactone dyes, aminoketone dyes, hydroxyketone dyes, anthraquinone dyes, indigo dyes,
Examples include thioindigo dyes and phthalocyanine dyes, but preferred as -time shift dyes are azo dyes,
carbonium dye, anthraquinone dye, methine dye,
Quinoneimine dyes are particularly preferred, and azo dyes are particularly preferred.

As a method for producing a temporary shift dye that can be used in the present invention,
A method in which the dye is made into a two-electron reductant, the original absorption spectrum is shifted hypsochromically, and the original absorption spectrum is achieved by oxidation during or after development processing (azo dyes, anthraquinone dyes, methine dyes, quinone imine dyes, indigo dyes, etc.) ), a method of chemically blocking the auxochrome to shift the original absorption spectrum hypsochromically, and deblocking it during development to restore the original absorption spectrum [Chemical blocking method] (ab dye, carbonium dye, (methine dyes, etc.), or a method of changing the dye into a dye with the desired absorption spectrum by chelating it with metal ions after reaching the image-receiving layer [post-chelation method] (azo dyes, methine dyes, phthalocyanine dyes, etc.) However, in the present invention, the chemical blocking method and the post-chelation method are preferred. Regarding these methods, in the method of chemically blocking the auxochrome, dye release and unblocking occur independently, as disclosed in JP-A-57-158638, JP-A-55-53329, and JP-A-55. -53330, and other more general examples of blocking methods include U.S. Pat.
．． No. 029, No. 4.310, 612, No. 3.674.
No. 478, No. 3,932,480, No. 3.993.6
No. 61, No. 4,335.200, No. 4. 363.
No. 865 and No. 4,410.618 are mentioned.

Further, an example in which dye release and deblocking occur simultaneously is described as a specific example in US Pat. No. 4,783.396. In addition, in the method of changing the dye into a dye having a desired absorption spectrum by chelating with metal ions after reaching the image receiving layer, Japanese Patent Laid-Open No. 58-2097
No. 42, No. 58-209741, No. 5B-17438
No. 58-17437, No. 58-17436, No. 57-185039, No. 57-58149, U.S. Pat. , Japanese Patent Publication No. 57-158637,
No. 58-123537, No. 57-181546, No. 60-57837, No. 57-182738, No. 59
-208551, 60-37555, 59-1
No. 5448, No. 59-149362, No. 59-164
An example is described in No. 553.

The compound represented by the above general formula (CII) or (CI[I) must itself be immobile in the photographic layer, and therefore
It is desirable to have a ballast group having 8 or more carbon atoms at the 64 or X position (particularly at the EAGO position N).

Typical specific examples of the reducible dye-providing compound used in the present invention are listed below, but the present invention is not limited thereto. Dye-providing compounds described in Publications No. 87-6199 and the like can also be used.

(l O) -= E - Each of these compounds can be synthesized by the methods described in the patent specifications cited above.

The amount of the reducible dye-providing compound used depends on the extinction coefficient of the dye, but is 0.05 to 5 mmol/po, preferably 0.
．． It is in the range of 1 to 3 mmol/bo.

The dye-donating substances can be used alone or in combination of two or more. In addition, in order to obtain images of black or different hues, for example, at least one cyan, magenta, and yellow dye-providing substance may be added in a layer containing silver halide or It is also possible to use a mixture of two or more dye-providing substances that release mobile dyes having different hues, such as by mixing and containing them in adjacent layers.

(2) Child Donor In the present invention, an electron donor (when referred to as an electron donor in the present invention, its precursor is also included) is used, and details of these compounds can be found in US Pat. No. 4,783,396; European Patent Publication No. 220746A2, Publication Contact Wheel 87-6
No. 199, etc. Particularly preferred electron donors are compounds represented by the following general formula (C) or CD).

General formula [C] General formula (D) In the package, A1゜1 and A. 2 each represents a hydrogen atom or a protecting group for a phenolic hydroxyl group that can be deprotected with a nucleophile.

Here, as a nucleophile, OHe, ROθ (R; alkyl group, aryl group, etc.), hydroxamic acid anion @
Examples include anionic reagents such as so3''θ, and compounds with lone electron pairs such as primary or secondary amines, hydrazine, hydroxylamines, alcohols, and thiols.

In the formula, when A1゜1 and A102 represent a group that can be removed by an alkali (hereinafter referred to as a precursor group), preferably an acyl group, an alkoxycarbonyl group,
Hydrolyzable groups such as aryloxycarbonyl group, carbamoyl group, imidoyl group, oxacyl group, sulfonyl group, precursor group of the type utilizing the reverse Michael reaction described in U.S. Patent No. 4,009,029, U.S. Patent No. 4゜310.612, a type of precursor group that uses the anion generated after the ring cleavage reaction as an intramolecular nucleophilic group, U.S. Pat. Nos. 3,674,478 and 3,9
No. 32,480 or No. 3,993゜661, the anion transfers electrons through a conjugated system, thereby causing a cleavage reaction, a precursor group, U.S. Pat. No. 4,33
5.200, or a precursor group that causes a cleavage reaction by electron transfer of the reacted anion after ring cleavage, or U.S. Pat. Nos. 4,363.865 and 4,410.61.
Examples include a precursor group using an imidomethyl group described in No. 8.

Also, AI @ I , A 1゜, is R1 when possible
- May be combined with l, Rros, Rros and RI4 to form a ring. Further, A1°l and Aloz may both be the same or different.

RzoI, Rxot, Rxos and Rz・4 are hydrogen atoms, alkyl groups, aryl groups, alkylthio groups, arylthio groups, sulfonyl groups, sulfo groups, halogen atoms, cyano groups, carbamoyl groups, sulfamoyl groups, amide groups, imido groups , carboxyl group, sulfonamide group, etc. These groups may have a substituent if possible.

However, the total number of carbon atoms in R1@I and R*64 is 8 or more. Furthermore, in general formula (C), RzoI and R2O
ni and/4 f, knee +;! R”” RR64
f)<, in the general formula CD), R■1 and Rt・-R1
- B and Rt and/or Rtl and R164 may be bonded to each other to form a saturated or unsaturated ring.

Among the electron donors represented by the general formula (C) or (D), those in which at least two of R161 to R204 are substituents other than hydrogen atoms are preferred, and particularly preferred compounds include at least one of R101 and B tax , and Rt・1 and R! At least one of +14 is a substituent other than a hydrogen atom.

A plurality of electron donors may be used in combination, or an electron donor and its precursor may be used in combination.

Specific examples of the electron donor will be listed, but the invention is not limited to these compounds.

(ED-1) II H (ED-2) 0 words (ED-3) 0)l H (ED-4) H (ED-5) CH30H (ED-6) (ED-7) l H (ED- 8) R tl (ED-9) u CL 011 (ED-10) H (ED-11) (ED-12) IIS (ED-13) H (ED-14) 0■ (ED-15) 11) I The amount of the electron donor to be used has a wide range, but preferably 0.01 mol to 50 mol per mol of the positive dye-donating substance.
Special 0. A preferred range is from 1 mol to 5 mol. Also, 0.001 mol to 5 mol per mol of silver halide
mol, preferably 0.01 mol to 1.5 mol.

(4) Addition method In order to introduce the dye-donating substance, electron donor or its precursor, and other hydrophobic additives of the present invention into the hydrophilic colloid layer, high-boiling point I! Solvents such as phthalic acid alkyl 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 II (e.g. dibutoxyethyl succinate, dioctyl azelate), trimesic acid esters N (e.g. trimesic acid tributyl), carbone #s described in JP-A-63-85633, JP-A-59-83154, JP-A-59-178451, JP-A-59-178452, JP-A-59-178453, JP-A-5
No. 9-178454, No. 59-178455, No. 59
U.S. Patent 2 using the compounds described in No.-178457
, 322,027, or an organic solvent with a boiling point of 30°C to 160°C, such as lower alkyl acetate such as ethyl acetate, butyl acetate, ethyl propionate, secondary butyl alcohol, methyl isobutyl. After dissolving in ketone, β-ethoxyethyl 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 solvent may be mixed and used.

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, it has a high boiling point per 1g of binder! 1g or less of solvent,
The amount is preferably 0.5 g or less, more preferably 0.3 g or less. Further, the dispersion method using a polymer described in Japanese Patent Publication No. 51-39853 and Japanese Patent Application Laid-Open No. 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, No. 53-
102733, JP-A No. 63-271339, etc.) When dispersing a hydrophobic substance in a hydrophilic colloid, a surfactant of type 6 can be used. For example, JP-A-59-
The surfactants listed on pages (37) to (38) of No. 157636 can be used.

(5) Silver halide emulsion 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 halogen composition within the particles may be uniform,
It may be a multiple structure with different compositions on the surface and inside (
JP 57-154232, JP 58-108533, JP 59-48755, JP 59-52237, U.S. Patent No. 4.433,048 and European Patent No. 100.9
No. 84). Further, tabular grains having a thickness of 0.5 μm or less, a diameter of at least 0.6 μm, and an average aspect ratio of 5 or more (U.S. Pat. No. 4.414.310, U.S. Pat. No. 4.414.
No. 35.499 and OLS No. 3.24
1,646A, etc.) or monodispersed emulsions with a nearly uniform particle size distribution (JP-A-57-178235, JP-A No. 58-1982)
No. 100846, No. 58-14829, International Publication 83
102338A, European Patent No. 64,412A.

83,377A, etc.).

Two or more types of silver halides having different crystal habit, halogen composition, grain size, grain size distribution, etc. may be used in combination.

By mixing two or more types of monodispersed emulsions with different particle sizes,
You can also adjust the gradation.

The grain size of silver halide in the present invention has an average grain size of 0.
．． 0.001 μm to 10 μm is preferable, and 0.00 μm to 10 μm is preferable.
More preferably, the thickness is from 1 μm to 5 μm.

These silver halide emulsions may be prepared by any of the acidic method, neutral method, or ammonia method, and the reaction method of the soluble silver salt and soluble halide salt is the one-sided mixing method,
Either a simultaneous mixing method or a combination thereof may be used. Back-mixing method where particles are formed under silver ion excess, or PA
The Chondral double jet method, which keeps g constant, can also be used.

Furthermore, in order to accelerate grain growth, the concentration, amount, or rate of addition of silver salts and halogen salts may be increased (JP-A-55-142329, JP-A-55-1581).
No. 24, U.S. Patent No. 3,650°757, etc.).

Epitaxial junction type silver halide grains can also be used (JP-A-56-16124, U.S. Patent No. 4
．． No. 094,684).

In the step of forming silver halide grains used in the present invention, ammonia is used as a silver halide solvent, and Japanese Patent Publication No. 47-1
Organic thioether derivatives described in No. 1386 or sulfur-containing compounds described in JP-A-53-144319 can be used.

In the process of particle formation or physical ripening, cadmium salt, zinc salt, lead salt, thallium salt, etc. may be present.

Further, for the purpose of improving high illumination failure and low illumination failure, water-soluble iridium salts such as iridium chloride (■, ■) and ammonium hexachloroiridate, or water-soluble rhodium salts such as rhodium chloride salt can be used.

The soluble salts may be removed from the silver halide emulsion after precipitation or physical ripening, and therefore the Tardel water washing method or the precipitation method can be applied.

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 nitrogen-containing heterocyclic compounds (JP-A-58-126526, JP-A-5B-215644).
.

The silver halide emulsion used in the present invention may be of the surface latent image type in which latent images are mainly formed on the grain surfaces, or may be of the internal latent image type in which the latent images are formed inside the grains. Direct reversal emulsions combining internal latent image type emulsions and nucleating agents can also be used. Internal latent image emulsions suitable for this purpose are disclosed in U.S. Pat.
It is written in the number etc. Preferred for combination in the present invention. The nucleating agent is described in U.S. Patent No. 3,227.552.
No. 4,245,037, No. 4,255.511, No. 4,266.013, No. 4.276.364, and No. 0L32,635.316.

As a method for forming the silver halide grains used in the present invention, a known single jet method or double jet method can be used.・Double jet method can also be used. Alternatively, a combination of these methods may be used. In any of the above-mentioned silver halide emulsion forming methods, either the known single-stage addition method or multi-stage addition method may be used, and the addition rate is as follows:
The rate may be constant, or the rate may vary stepwise or continuously (for example, by keeping the concentration of soluble silver salt and/or halide constant while changing the rate of addition of these solutions). , by varying the concentration of soluble silver salt and/or halide in the additive solution while keeping the addition flow rate constant, or by a combination thereof). Further, the reaction solution may be stirred by any known stirring method. Furthermore, the temperature and pH of the reaction solution during the formation of silver halide grains may be set in any manner.

The coating amount of photosensitive silver halide of the present invention is silver equivalent
g to 10 g/rrf.

Gelatin is advantageously used as the protective colloid used in preparing the emulsions of the invention, but other hydrophilic colloids can also be used.

For example, gelatin derivatives, graft polymers of gelatin and other polymers, proteins such as albumin and casein; cellulose derivatives such as hydroxyethyl cellulose, carboxymethyl cellulose, and cellulose sulfates; sugar derivatives such as sodium alginate and starch derivatives;
Polyvinyl alcohol, polyvinyl alcohol partial acetal, poly-N-vinylpyrrolidone, polyacrylic acid,
A wide variety of synthetic hydrophilic polymeric materials can be used, such as single or copolymers of polymethacrylic acid, polyacrylamide, polyvinylimidazole, polyvinylpyrazole, and the like.

In addition to lime-processed gelatin, acid-processed gelatin, Bull, Soc, Sci, Photo, Ja
Pan.

Enzyme-treated gelatin as described in NIIL16, P2O (1966) may be used, and gelatin hydrolysates and enzymatically decomposed products may also be used.

Various antifoggants or photographic stabilizers can be used in the present invention. An example is RDI7
643 (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, poropolar 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, JP-A-63-23
145 etc.).

These sensitizing dyes may be added to the emulsion at or before chemical ripening, and may be added to the emulsion as described in US Pat. No. 4,183.
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 10-1+ to lo-2 moles per mole of silver halide.

(6) Structure of the photosensitive layer In order to reproduce natural colors by the subtractive color method, the above-mentioned dye image-forming substance provides a dye having selective spectral absorption in the same wavelength range as the emulsion spectrally sensitized with the above-mentioned spectral sensitizing dye. A photosensitive layer consisting of at least two in combination with a photosensitive layer is used. The emulsion and the dye image-forming substance may be coated as separate layers, or
Alternatively, they may be mixed and applied as a single layer. A separate layer is preferable when the dye image-forming material coated has absorption in the spectral sensitivity range of the emulsion with which it is combined.

In this case, it is preferable from the viewpoint of sensitivity that the layer containing the reducible dye-providing compound is located below the silver halide emulsion layer.

Further, the emulsion layer may be composed of a plurality of emulsion layers having different sensitivities, and an arbitrary layer may be provided between the emulsion layer and the dye image forming material layer.

It is also possible to increase the color image density by providing a barrier layer as described in Japanese Patent Publication No. 60-15267, or to increase the sensitivity of the photosensitive element by providing a reflective layer as described in Japanese Patent Application Publication No. 60-91354.

In a preferred multilayer structure, a blue-sensitive emulsion combination unit, a green-sensitive emulsion combination unit, and a red-sensitive emulsion combination unit are arranged in this order from the exposure side.

When the present invention is used as a photographic material, an ultraviolet absorbing layer can be provided on the uppermost layer of the photosensitive layer.

In the absorption layer, various ultraviolet absorbers commonly used in the technical field, such as benzotriazole compounds, 4-thiazolidone compounds, and penzohenone compounds, can be used.

(C) Binder A hydrophilic binder is preferably used as the binder for the constituent layers of the photosensitive element and the image-receiving element. An example of this is JP-A-62
Examples include those described on pages (26) to (28) of No.-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-62-2452
60 etc., i.e. -COO
Homopolymers of vinyl monomers having M or -3O,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.

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

Various polymer latexes are used in the constituent layers (including the back layer) of the photosensitive element or image-receiving element 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. can be contained. Specifically, Japanese Patent Publication Nos. 62-245258 and 62-13664
Any of the polymer latexes described in No. 8, No. 62-110066, etc. can be used. In particular, using a polymer latex with a low glass transition point (40°C or less) for the mordant layer can prevent cracking of the image-receiving layer, and using a polymer latex with a high glass transition point for the bank layer can prevent curling. is obtained.

(H) Hardener Hardeners used in the constituent layers of photosensitive elements and image-receiving elements include:
U.S. Patent No. 4,678.739, column 41, JP-A-59
-116655, 62-245261, 61-
Examples include hardeners described in No. 18942 and the like. More specifically, aldehyde hardeners (such as formaldehyde)
, aziridine hardener, epoxy hardener (CH2-CR-CH2-0-(CHI) J-0-C
H2-CH-CH2 etc.)\/\
1 Vinyl sulfone hardeners (N,N'-ethylene-bis(vinylsulfonylacetamido)ethane, etc.), N-methylol hardeners (dimethylol urea, etc.), or polymer hardeners (JP-A-Show). 62-234157 etc.).

(1) In addition, various surfactants can be used in the constituent layers of the photosensitive element and the image-receiving element for the purposes of coating aids, improving peelability, improving slipperiness, preventing electrification, promoting development, and the like. Specific examples of surfactants are JP-A-62-173463 and JP-A No. 62-1834.
It is described in No. 57, etc.

The constituent layers of the photosensitive element and the image receiving element may contain an organic fluoro compound for the purpose of improving slipperiness, preventing static electricity, improving releasability, and the like. Representative examples of fluoro compounds include Japanese Patent Publication No. 57-9053 No. 8-174M, Japanese Patent Application Publication No. 61-2
0944, 62-135826, etc., or hydrophobic fluorine compounds such as oily fluorine compounds such as fluorine oil or solid fluorine compound resins such as tetrafluoroethylene resin. Can be mentioned.

A matting agent can be used in the photosensitive element and the image receiving element. As matting agents, in addition to the compounds described in JP-A-61-88256 (page 29) such as silicon dioxide, polyolefin or polymethacrylate, there are also compounds such as benzoguanamine resin beads, polycarbonate resin beads, As resin beads, etc. No. 62-1100
There is a compound described in No. 65.

In addition, the constituent layers of the photosensitive element and the image receiving element may contain an antifoaming agent, an antibacterial agent, colloidal silica, and the like. Specific examples of these additions are described in JP-A-61-88256, pages (26) to (32).

In the present invention, an image formation accelerator can be used in the photosensitive element and/or the image receiving element. Image formation accelerators include accelerating redox reactions between silver salt oxidizing agents and reducing agents, accelerating reactions such as generation of dyes from dye-donating substances, decomposition of dyes, and release of diffusible dyes, and photosensitive material layers. Physicochemical functions include bases or base precursors, nucleophilic compounds, high-boiling organic solvents (oils), surfactants, silver or silver ions. It is classified as a compound that interacts with However, these substance groups generally have multiple functions;
Usually, some of the above-mentioned promoting effects are combined. Details of these can be found in U.S. Pat. No. 4,678,739, columns 38-40.

The processing composition used in the present invention is uniformly spread on the photosensitive element after exposure of the photosensitive element, and the components contained therein develop the photosensitive layer.

For this purpose, the composition contains an alkali, a thickener, a light shielding agent, an electron transfer agent (developer), and also a development accelerator, a development inhibitor, and a developer to prevent deterioration of the developer. Contains antioxidants to protect the skin.

A light shielding agent can be included in the composition if necessary.

The alkali is sufficient to adjust the pH of the liquid to 12 to 14, and includes alkali metal hydroxides (e.g., sodium hydroxide, potassium hydroxide, lithium hydroxide), alkali metal phosphates (e.g., potassium phosphate). , guanidines,
Examples include hydroxides of quaternary amines (eg, tetramethylammonium hydroxide), and among them, potassium hydroxide and sodium hydroxide are preferred.

Thickeners are necessary to spread the processing solution uniformly, to maintain close contact between the photosensitive element and image-receiving element during development, and to prevent processing solution components from remaining on the surface of the image-receiving element during peeling. be.

For example, alkali metal salts of polyvinyl alcohol, hydroxyethylcellulose, and carboxymethylcellulose are used, and preferably hydroxyethylcellulose and sodium carboxymethylcellulose are used.

When the image-receiving element is a transparent support and does not have a light-shielding function, it may contain a light-shielding agent.

As the light-shielding agent, any dye or pigment, or a combination thereof, can be used as long as it does not diffuse into the dye image-receiving layer and cause staining. Typical examples include carbon bra and glue, but other combinations of titanium white and dyes are also used. This dye may be a temporary light blocking dye that becomes colorless after a certain period of time of treatment.

Preferred electron transfer agents are any that cross-oxidize the electron donor and do not substantially produce stains when oxidized.

Such electron transfer agents may be used alone or in combination of two or more types, or may be used in the form of a precursor.

Specific compounds of these electron transfer agents include aminophenols and pyrazolidinones, and among these, pyrazolidinones are particularly preferred because they generate less stain.

For example, 1-phenyl-3-pyrazolidinone, 1-p-
1-lylu-4.4-dihydroxymethyl-3-pyrazolidinone, 1-(3'-methyl-phenyl)-4-methyl-4-hydroxymethyl-3-pyrazolidinone, 1-phenyl-4-methyl-4-hydroxymethyl- Examples include 3-pyrazolinonone, 1-1-) true 4-methyl-4-hydroxymethyl-3-pyrazolidinone, and the like.

The above treatment composition is described in U.S. Pat. No. 2,543,181;
No. 2,643,886, No. 2,653゜732, No. 2,723,051, No. 3,056.491, No. 3
It is preferable to use the container by filling it into a container that can be ruptured by pressure, such as those described in Japanese Patent Application No. 056,492, No. 3, 152.515, and the like.

(K) Structure of Photosensitive Material A color diffusion transfer instant photosensitive material can be formed by combining each of the above elements.

Color expansion FI transfer instant film units are broadly classified into peelable type and peelless type.The peelable type has a photosensitive layer and a dye image-receiving layer coated on separate supports, and after image exposure, the photosensitive element and A dye image transferred to the dye image-receiving layer is obtained by overlapping the dye image-receiving element, spreading a processing composition therebetween, and then peeling off the dye-receiving element.

On the other hand, in the non-peelable type, a dye image-receiving layer and a photosensitive layer are coated between a transparent support and another support.
There are two types: one in which the image-receiving layer and the photosensitive layer are coated on the same transparent support, and the other in which the image-receiving layer and the photosensitive layer are coated on separate supports.

In the former case, a white reflective layer is coated between the image-receiving layer and the photosensitive layer, and in the latter case, a white pigment is added to the processing composition developed between the image-receiving layer and the silver halide emulsion layer. By containing it, the dye image transferred to the image-receiving layer can be observed with reflected light.

In the peel-off type, the image-receiving element and the photosensitive element are generally attached to separate supports, and in addition to the dye image-receiving layer, a layer having a neutralizing function, a neutralization timing layer, and a peeling layer are provided as necessary as the image-receiving material. . As the support for the image-receiving material, it is preferable to use a white support having a light-shielding function. -The force-sensitive material is
In addition to the photosensitive layer, a layer having a neutralization function and a neutralization timing layer are provided as necessary. As a support for photosensitive materials,
It is preferable to use a black support having a light blocking function. Regarding the film unit, JP-A-61-47956
The items listed in this item may be applied.

Furthermore, as a peelable type, a film unit in which a dye image-receiving layer/a peeling layer/a photosensitive layer are attached to the same support in this order can be used as described in JP-A No. 01198747 and Japanese Patent Application No. 01-68749. .

In the non-peelable type, when the photosensitive layer and the image-receiving layer are provided on the same support, a layer with a neutralizing function is provided on a separate transparent support,
A cover sheet material with a neutralizing timing layer is used. Regarding the film unit, Special Publication No. 46-1
6356 and JP-A No. 1-13040 can be used.

Examples will be shown and explained below.

Example 1 A method for preparing a red-sensitive silver halide emulsion (1) will be described.

A well-stirred gelatin aqueous solution (20 g of gelatin in 800 g of water, 0.13 g of potassium bromide, 6 g of sodium chloride)
The following (+) solution and (It) solution were added at the same time over 30 minutes at the same time.Then, the following (In) solution and ( IV) solution was added at the same time over 30 minutes.
Three minutes after the start of addition of solutions DI) and (IV), the following dye solution was added over a period of 20 minutes.

After washing with water and desalting, lime treatment Added 22g of ossein gelatin to adjust pH to 6.2) After adjusting PAg to 7.7, sodium thiosulfate and 4-hydroxy-6-methyl-1,3
,3a,7-chitrazaindene, adding chloroauric acid to 60
Optimally chemically sensitized at °C. In this way, a monodisperse cubic silver chlorobromide emulsion with an average grain size of 0.38 μm was obtained. Yield was 635g.

CH.

■ C.B.

Dye solution 67 mg of the following dye (a) and 133 g of dye (b) were dissolved in 100 d of methanol.

Dye (a) Dye (b) Next, the green-sensitive silver halide emulsion (n) will be described.

A well-stirred aqueous gelatin solution (Table A) was kept warm at 50°C, and solutions (1) and (I[) of Table B were added over 30 minutes. Next, add (I[l) solution and (IV) solution in Table B to 3
The dye solution in Table C was added one minute after the addition was completed.

Table A Table B Table C (composition of dye solution) After washing with water and desalting, add 20 g of gelatin to adjust pHlpAg, and add triethylthiourea, chloroauric acid, 4-hydroxy-
Optimal chemical sensitization was performed using 6-methyl-1,3,3a,7-chitrazaindene.

The resulting emulsion was a 0.40μ monodisperse cubic emulsion, and the yield was 630g.

Next, a method for preparing a blue-sensitive silver halide emulsion (I[l) will be described.

A well-stirred gelatin aqueous solution (20 g of gelatin, 3 g of potassium bromide, 0.0 of the following compound in 800 cc of water)
3g, and No(C)It)zs(CTo)zs(C)lz)tO
(25 g of H0 was added and kept at 50°C), and the following solutions (1) and (2) were added simultaneously over 30 minutes.

Thereafter, the following solutions (3) and (4) were simultaneously added over 20 minutes. Further, after starting the addition of the liquid (3), the following dye solution was added over a period of 18 minutes from 5 minutes.

After washing with water and desalting, add 20 g of lime-treated ossein gelatin to adjust the pH to 6.2) PAg to 8.5, and then add sodium thiosulfate and 4-hydroxy-6-methyl-1,3,
Optimal chemical sensitization was carried out by adding 3a,7-chitrazaindene and chloroauric acid. Thus the average particle size, 0.4
600 g of a monodispersed cubic silver chlorobromide emulsion of 0 μm was obtained.

Dye solution (CHri4S02- (CHriasO,)1NE
A solution of h dissolved in 160 cc of methanol.

Compound ■ CH.

C1l.

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

Weighed 12 g of yellow dye-donating substance (1)'' and high-boiling organic solvent (1) 9, added 51 d of ethyl acetate, and heated and melted at about 60°C to form a homogeneous solution. 100 g of 10% solution of lime-processed gelatin, 6 ml of water
0cc and sodium dodecylbenzenesulfonate 1
．． After stirring and mixing with 5 g, the mixture was dispersed using a homogenizer at 110,000 rpm for 10 minutes. This dispersion is called a yellow dye-providing substance dispersion.

The dispersion of magenta and cyan dye-providing substances is the same as the yellow dye-providing substance, magenta dye-providing substance (2), or cyan dye-providing substance (3).
I made it using 9.

Next, we will discuss how to make a gelatin dispersion of an electron donor.

220.6g of the electron donor (]) in a high-boiling organic solvent (1
)" was weighed out, 120 d of ethyl acetate was added thereto, and the mixture was heated and melted at about 60°C to form a homogeneous solution.

After stirring and mixing this solution with 100 g of a 10% solution of lime-treated gelatin, 60 cc of water, and 1.5 g of sodium dodecylbenzenesulfonate,
Dispersion was performed for 110,000 rpm. This dispersion is called an electron donor dispersion.

Next, we will describe how to make a gelatin dispersion of a diffusion-resistant reducing agent for the intermediate layer.

Diffusion-resistant reducing agent (])” 23.5 g, high boiling point $
1S! ? A homogeneous solution was obtained by dissolving 8.5 g of medium (1) in 120 d of ethyl acetate at approximately 60°C. This solution, 100 g of a 10% aqueous solution of lime-treated gelatin, and a surfactant (
3)" and 0.2 g of dobnolbenzenesulfonic acid were stirred and mixed, and then dispersed using a homogenizer at 10.00 rpm for 10 minutes.

This dispersion is called a dispersion of a diffusion-resistant reducing agent for an intermediate layer.

With these, the comparative angry light element (
101) was created.

Table 1 Matting agent (1)'' Polymethyl methacrylate spherical latex (average particle size 4μ) θ Ultraviolet absorber (2) 1 I Water-soluble polymer (1)'' Surfactant (1)' Aerosol OT surfactant (2
)0 High boiling point I! Solvent (1)" Tricyclohexylphosphate hardener (1) 0 1,2-bis(vinylsulfonylacetamido)ethane Diffusion-resistant reducing agent (1) "H Electron donor (1) 0 0HNHCOCIIlhs "' Yellow dye Donor Substance (1) ” Magenta Dye Donor Substance (2) 0 a CONH (tJxsLn) Cyan Dye Donor t f31 ” Next, the intermediate layer between the 6th layer and the 3rd layer was changed as shown in Table 2. Samples 102, 103, and 104 of the present invention were prepared.

Table 2 The 3rd N also had the same contents as the 6th layer.

Each layer is indicated by ■ to ■ in order from the one farthest from the support.

The image-receiving element was made by laminating a paper support of 150 .mu.m thick paper with 30 .mu.m thick polyethylene on both sides, which was prepared as follows.

The polyethylene on the image-receiving layer side is 10% titanium oxide by weight based on tyrene is added in a dispersed manner.

Back side = (a) Carbon black 4.0g/rrf
, 2.0 g of gelatin/shading layer.

(b) Titanium oxide 8.0g/I, Zera White layer with 1.0 g/rrr of chlorine.

(c) Protective layer of gelatin 0.6g/po.

The coating is applied in the order of (a) to (c), and the dura mater hardened with an agent.

Image-receiving layer side: (1) Neutralization layer containing 22 g/l of acrylic acid-butyl acrylate (mole ratio 8:2) copolymer having an average molecular weight of 50,000.

(2) Cellulose acetate with an acetylation degree of 51.3% (the weight of acetic acid released by hydrolysis is 0.513 g per 1 g of sample) and styrene-maleic anhydride with an average molecular weight of 10,000 (molar ratio 1:1) copolymer at 4.5 g/rrr in a weight ratio of 95:5.

(3) An intermediate layer containing poly-2-hydroxyethyl methacrylate at 0.4 g/po.

(4) A polymer latex obtained by emulsion polymerization of styrene-butyl acrylate-acrylic acid-N-methylol acrylamide at a weight ratio of 49.1/42°3/4/4 and methyl methacrylate/acrylic acid/N-methylol acrylamide. A first timing layer containing emulsion polymerized polymer latex in a weight ratio of 93:3:4 and a solids ratio of 6:4, with a total solids content of 1°6 g/rrf.

(5) As a coating aid (n=30) The weight with the following repeating unit is calculated using Combination mordant 3.0g10f and gelatin Image receiving layer coated with 3.0 g/nT.

x:y:z=5:5:90 (6) Protective layer coated with 0.6 g of gelatin.

The above (1) to (6) are applied in this order and hardened with a hard coating.

The formulation of the treatment liquid is shown below.

A rupturable container was filled with 0.8 g of a treatment solution having the following composition.

1-P-) True 4-hydroxymethyl-4-methyl-3-pyrazolidone IO, 0g 1-phenyl-4-hydroxymethyl-4-methyl-3-pyrazolidone 4.0g Potassium sulfite (anhydrous) 4.0g Hydroxyethylcellulose 40g potassium hydroxide
64g benzyl alcohol
Add 2.0g water to total amount
After exposing 1 kg of the photosensitive elements 101 to 104 from the emulsion layer side through Y, M, C, and gray color separation filters, the image-receiving layer side of the image-receiving element material is overlapped, and 60μ of the above-mentioned processing liquid is applied between the two materials. It was rolled out with the help of a pressure roller to a thickness of .

The processing was carried out at 25° C., and the photosensitive material and image receiving element material were peeled off after 1.5 minutes.

The reflected density transferred to each receiver element was measured with a color density needle.

The results are shown in Table 3.

It has been found that the present invention reduces color turbidity and improves color reproduction when exposed to monochromatic light.

March q, 1991 1. Display of case 1990 patent application No. 280458 2
Title of the invention Color Diffusion Transfer Photosensitive Material 3, Relationship to the Amendment Person Case Patent Applicant Location 210 Nakanuma, Minamiashigara City, Kanagawa Prefecture Name (
520) Fuji Photo Film Co., Ltd. 4. Target of correction
The descriptions in the "Scope of Claims" column of the specification, column 5 of "Detailed Description of the Invention" and the "Scope of Claims" section of the description of the contents of the amendment are amended as shown in the attached sheet.

The statement in the "Detailed Description of the Invention" section of the specification is amended as follows.

1) Second line from the bottom of page 2 "Kiru, Instant" "Kiru Instant" and correct it.

2) Page 35, 4th line from the bottom "During image development" "During development" and correct it.

3) Page 62, line 8 "chemicals" "Compound" and correct it.

Attachment Claims 1) At least two photosensitive layers having mutually different color sensitivities are present on a support, and the photosensitive layers are a photosensitive silver halide emulsion,
It contains a combination of an electron donor and a reducible dye-donating compound that releases a diffusible dye when reduced, and has a plurality of intermediate layers with different concentrations of a diffusive reducing agent added between the photosensitive layers. A color diffusion transfer photosensitive material characterized in that the material is developed with an alkaline processing liquid containing an electron transfer agent after exposure.

2) In the color diffusion transfer photosensitive material according to claim 1, the reducible dye-providing compound has the following general formula (C-
A color diffusion transfer photosensitive material characterized by being a compound represented by 1).

General formula (C-1) PWR-(Time)t-Dye In the formula, PWR is reduced to (Time),
-Represents a Dye-releasing group.

Time is from PWR - (T im e ) t-D
After being released as Dye, Dye is released through the subsequent reaction.
represents a group that releases

t represents an integer of 0 or 1.

Dye represents a dye or its precursor.

3) In the color diffusion transfer photosensitive material according to claim 1, at least one of the intermediate layers has substantially zero concentration of a diffusion-resistant reducing agent, and the core layer has a reducible dye-donating material. A color diffusion transfer photosensitive material characterized in that it is adjacent to a layer containing a compound or a layer containing a photosensitive silver halide emulsion.

Claims (1)

[Scope of Claims] 1) At least two photosensitive layers having mutually different color sensitivities are provided on a support, and this photosensitive layer contains a photosensitive silver halide emulsion, an electron donor, and a diffusible material when reduced. It contains a combination of reducible dye-donating compounds that release a dye, has a plurality of intermediate layers with different concentrations of diffusion-resistant reducing agents between the photosensitive layers, and contains an electron transfer agent after exposure. A color diffusion transfer photosensitive material that is developed using an alkaline processing solution. 2) In the color diffusion transfer photosensitive material according to claim 1, the reducible dye-providing compound has the following general formula (C-
A color diffusion transfer photosensitive material characterized by being a compound represented by I). General Formula (C-I) PWR-(Time)_t-Dye In the formula, PWR represents a group that releases -(Time)_t-Dye upon reduction. Time represents a group that is released from PWR as -(Time)_t-Dye and then releases Dye through a subsequent reaction. t represents an integer of 0 or 1. Dye represents a dye or its precursor. 3) In the color diffusion transfer photosensitive material according to claim 1, at least one of the intermediate layers has substantially zero concentration of a diffusion-resistant reducing agent, and the layer has a reducible dye-providing agent. A color diffusion transfer photosensitive material characterized in that it is adjacent to a layer containing a compound or a layer containing a photosensitive silver halide emulsion.