JPH02118637A - Silver halide color photographic sensitive material - Google Patents

Abstract

PURPOSE:To obtain a photographic sensitive material having superior recolorability, processing stability and desilverability by forming a single color- sensitive layer on a support and incorporating a specified cyan coupler into the layer. CONSTITUTION:A single color-sensitive layer is formed on a support and a cyan coupler represented by formula I is incorporated into the layer. In the formula I, R<1> is -CONR<4>R<5>, -NHCOR<4>, etc., R<2> is a univalent group, R<3> is a substituent, X is H or a group which is released by a reaction with the oxidized product of an arom. prim. amine developing agent, (l) is 0 or 1, (m) is an integer of 0-3, each of R<4> and R<5> is H, an arom. group, etc., R<6> is an arom. group, a heterocyclic group, etc., when (m) is 2 or 3, plural R<3>'s may be different from each other or may bond to each other to form a ring, R<4> and R<5>, R<2> and R<3> or R<2> and X may bond to each other to form a ring, when (l) is 0, (m) is 0 and R<1> is -CONHR<7>, and R<7> is an arom. group. The recolorability and processing stability of the resulting photographic sensitive material can be improved.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a silver halide photographic light-sensitive material for full-color photography, and in particular, at least one color-sensitive layer is formed into a single layer, and the color reversibility and processing stability are improved. This invention relates to an improved silver halide color photographic material.

[Background of the invention]

In order to achieve wide latitude and good graininess in color film for photographic use currently on the market, the British Patent 929 patent
, No. 045, and Japanese Patent Publication No. 49-15495, a multilayer structure is adopted in which there are two or more emulsion layers having the same color sensitivity but different grain sizes of silver halide grains, that is, different sensitivities. has been done.

However, although this silver halide photographic material having a multilayer structure has the above-mentioned advantages, it has various problems.

First, since two or more emulsion layers are included in the same color-sensitive layer, the film thickness becomes thick and the color restoration property deteriorates.

Second, due to the use of silver halide grains with significantly different grain sizes in the high-speed and low-speed layers and the multi-layer structure, the development speed of the layers coated close to the support is slow. Poor stability against fluctuations.

In order to compensate for these shortcomings, for example,
No. 449, No. 62-116935, No. 61-2735
No. 43, No. 62-75444, No. 62-91947
No. 62-112157, No. 62-11215
Publications such as No. 8 and No. 62-112159 disclose photosensitive materials using 5-amino-1-7-tol-based or l-hydroxy-2-7-tanilide-based uncouplers, or their recoloring methods. The sex-improving effect is still not sufficient.

The deterioration of recoloring property referred to herein refers to a phenomenon in which the cyan dye color density decreases during development processing using a bleach and bleach-fix solution that are more fatigued than bleach and bleach-fix solutions with strong oxidizing power.

[Purpose of the invention]

The present invention was made in view of the above-mentioned problems, and an object of the present invention is to provide a silver halide color photographic material which has excellent color restoration properties, processing stability, and desilvering properties, and which has a simple production process and high production efficiency. It is to provide.

[Structure of the invention]

The above object of the present invention is to provide a silver halide color photographic material having blue-sensitive, green-sensitive and red-sensitive color-sensitive layers on a support, in which at least one color-sensitive layer is formed from a single layer. Achieved by a silver halide color photographic light-sensitive material composed of a silver halide color photographic material, and characterized in that at least one color-sensitive layer contains at least one cyan coupler represented by the following general formula (C-1). Ta.

(In the formula, R1 is -CONR'R'-NHCOR'N
HCOOR'-NH5O2R6-NHCONi<
'R' or -N HS O□N R'R', R
2 represents a monovalent group, R3 represents a substituent, X represents a hydrogen atom or a group that leaves by reaction with an oxidized aromatic primary amine developer, a represents O or l, m is 0~
R4 and R6 each represent a hydrogen atom, an aromatic group, an aliphatic group, or a heterocyclic group, and R6 represents an aromatic group, an aliphatic group, or a heterocyclic group. When m is 2 or 3, each R3 may be the same or different, and may combine with each other to form a ring, and R4 and R6R2
and R3R2 and X may be combined to form a ring.

However, when Q is 0, m is 0 and R1 is -CONHR'
and R7 represents an aromatic group. ) [Specific constitution of the invention] In the present invention, the term "silver halide emulsion layer is a single layer" means that the type of coupler contained in the emulsion layer, the grain size of silver halide grains, the halogen composition and crystal habit, and the coupler This also includes the case where a plurality of emulsion layers having the same ratio of silver halide and silver halide are arranged as a continuous layer.

In the present invention, it is preferable that at least the blue-sensitive silver halide emulsion layer is a single layer, and it is more preferable that both the blue-sensitive and green-sensitive silver halide emulsion layers are a single layer, particularly the blue-sensitive silver halide emulsion layer. It is preferred that all of the green-sensitive, green-sensitive and red-sensitive silver halide emulsion layers each be a single layer.

When the color-sensitive layer has a single-layer structure, the number of coated layers of photosensitive material is reduced compared to the conventional multi-layer structure, making it possible to form a thin film. Therefore, production efficiency, sharpness, and graininess are improved. The film thickness after drying is 2.
The thickness is preferably 0 to 3 μm, particularly preferably 15 to 5 μm.

The exposure latitude of the silver halide emulsion layer, which is a single layer, is 3.
．． As a means for increasing the sensitivity to 0 or more, a method of mixing and using silver halide grains having different sensitivities can be used. Specifically, examples include a method in which silver halide grains having different grain sizes are mixed and used, and a method in which a desensitizer is contained in at least a portion of the silver halide grains.

Silver halide grains with different grain sizes used in combination to obtain a wide exposure latitude have an average grain size of 0.2.
It is preferable to combine silver halide grains with a maximum average grain size of ~2.0 μm and silver halide grains with a minimum average grain size of 0.05 to 1.0 μm, and further have an intermediate average grain size. One or more types of silver halide grains may be combined.

Further, the average grain size of the silver halide grains having the maximum average grain size is 165 to 4% of the average grain size of the silver halide grains having the minimum average grain size.
Preferably, it is 0 times.

In order to obtain a wide exposure latitude, it is possible to mix and use silver halide grains with different average grain sizes. If used, the difference in average grain size can be reduced without changing the sensitivity of silver halide grains, and furthermore, it is possible to mix and use silver halide grains having the same average grain size and different sensitivities.

That is, by using silver halide grains containing a desensitizer, a wide exposure latitude can be obtained even if the coefficient of variation of the entire grain is made small.

Therefore, these silver halide grains having a small coefficient of variation that are exposed to the same environment are preferred because their photographic performance is stabilized against changes over time and fluctuations in development processing. Furthermore, from the viewpoint of production technology, it becomes possible to chemically sensitize a mixed system of silver halide grains having different sensitivities in the same batch.

Various desensitizers can be used, such as metal ions, antifoggants, stabilizers, and desensitizing dyes. Among these, metal ion doping is preferred.

The metal ion used for doping is Cu.

Cd, Zn, Pb, Fe, TQ, Rh, B
Examples include metal ions such as i, lr, Au, Os, and Pd, preferably Cu, Rb, and Os;
Particularly preferred is Rb. These metal ions can be used, for example, as halogeno complex salts, or two or more types can be used in combination. pH of AgX suspension system during doping
is preferably 5 or less.

In addition, the doping amount of these metal ions varies depending on the type of metal ion, the particle size of the silver halide grains, the doping position of the metal ion, the desired sensitivity, etc.
Preferably 10-17 to 10-2 mol per 1 mol,
Particularly preferred is IQ-16 to 10-4 mol.

Furthermore, by selecting the type of metal ion, doping position and doping amount, various different sensitivity qualities can be imparted to the silver halide grains.

If the doping amount is less than 10-2 mol/AgX mol, it will not have a large effect on grain growth, so silver halide grains with a small grain size distribution are prepared under the same grain growth conditions and even under the same batch growth. be able to.

It is also possible to prepare silver halide grains with different doping conditions so that they can be put to practical use, then mix them in a predetermined ratio to form the same batch, and then chemically sensitize the grains. Each silver halide grain receives a sensitizing effect based on its properties, and an emulsion having a wide latitude can be obtained depending on the sensitivity difference and mixture ratio.

The antifoggants or stabilizers include azoles (e.g., benzthiazolium salts, indazoles, triazoles, benztriazoles, benzimidazoles, etc.), heterocyclic mercapto compounds (e.g., mercaptotetrazoles, mercaptothiazoles, mercapto Thiadiazoles, mercaptobenzthiazoles, mercaptobenzimidazoles, mercaptopyrimidines, etc.) Azaindenes (e.g., tetraazaindenes, pentaazaindenes, etc.) Nucleic acid decomposition products (e.g., adenine, guanine, etc.), benzenethiosulfonic acids, thioketo Examples include compounds.

Examples of desensitizing dyes include cyanine dyes, merocyanine dyes, complex cyanine dyes, complex merocyanine dyes, holoporacyanine dyes, hemicyanine dyes, styryl dyes, and hemioxonol dyes.

The location of the desensitizer is preferably mixed inside the silver halide grains from the viewpoint of storage stability of the photosensitive material, stagnation stability of the coating solution, etc., and even if its distribution is uniform, , even if it is localized at the center or intermediate position of the particle,
It may gradually decrease from the center of the particle toward the outside.

From the viewpoint of production efficiency, it is preferable that the seed particles be localized in the center of the particles, and if a method using seed particles with a small coefficient of variation is used, the steps after particle growth can be performed in the same batch.

General formula (C-1) [wherein R1 is -CONR'RS, -NHCOR', -
Nl(COOR', N1(SO2R6, -NH3O2R
'R' or -NH3O2NR'R', R2 is 1
represents a valent group, R3 represents a substituent, X represents a hydrogen atom or a group that leaves by reaction with an oxidized aromatic primary amine developer, Q represents 0 or 1, m represents 0- represents an integer of 3, R4 and R5 each represent a hydrogen atom, an aromatic group,
It represents an aliphatic group or a heterocyclic group, and R6 represents an aromatic group, an aliphatic group or a heterocyclic group. When m is 2 or 3, each R3 may be the same or different, and may be bonded to each other to form a ring, and R4, R5R2, R3R2, and X may be bonded to form a ring. . However, when a is 0, m is OX, R' is 100 NHR', and R7 represents an aromatic group. ] General formula EC-1) 0■ H (R2NFI) X In the above general formula (C-1), R1 is -CONR'R',
NHCOR',-NH3O2R',-NH3O2R',
-NFICONR'R' or -NH5O□NR'R5
, R2R3 represents a hydrogen atom or a substituent, and X represents a hydrogen atom or a group that is separated by reaction with an oxidized aromatic primary amine developer. Q is 0 or 1, I is O~3
represents. R4 and R5 each represent a hydrogen atom, an aromatic group, an aliphatic group, or a heterocyclic group, R6 represents an aromatic group, an aliphatic group, or a heterocyclic group, and when m is 2 or 3,
Each R3 may be the same or different, and may be bonded to each other to form a ring, and R4, R' R2, R3, R2, and X may be bonded to each other to form a ring.

However, when a is O, m is 0 and R1 is -CONHR7te. R7 represents an aromatic group. Each of the groups represented by R2 to R7 above includes those having a substituent.

The compound represented by general formula (C-1) will be described in detail below.

R6 is an aliphatic group having 1 to 30 carbon atoms, or an aliphatic group having 6 to 30 carbon atoms;
30 aromatic groups and heterocyclic groups having 1 to 30 carbon atoms are preferable, and as R' and R', those listed as preferable hydrogen atoms and R6 are preferable.

NH as R2 directly or via CO or S02
Hydrogen atom bonded to, aliphatic group having 1 to 30 carbon atoms, PO
(R10) 2 or -8O□0R10 (R'R' and Rlo are the same as defined in R4R5 and R6 above, respectively, and R8 and R9 may be combined to form a heterocycle.) is preferred. The substituents represented by R2 include those having further substituents.

R7 is preferably an aromatic group having 6 to 30 carbon atoms.
Typical examples of substituents for R7 include halogen atom, hydroxyl group, amino group, carboxyl group, sulfo group, cyano group, aromatic group, heterocyclic group, carbonamide group, sulfonamide group, carbamoyl group, sulfamoyl group, and ureido group. group, acyl group, acyloxy group, aliphatic oxy group,
Aromatic oxy group, aliphatic thio group, aromatic thio group, aliphatic sulfonyl group, aromatic sulfonyl group, sulfamoyl group, mino group, nitro group, imido group, aliphatic group, aliphatic oxycarbonyl group, etc. Can be done. When substituted with a plurality of substituents, the plurality of substituents may be bonded to each other to form a ring, such as a dioxymethylene group.

Representative examples of R3 include halogen atom, hydroxyl group,
Amine group, carboxyl group, sulfo group, anano group, aromatic group, heterocyclic group, carbonamide group, sulfonamide group, carbamoyl group, sulfamoyl group, ureido group,
Acyl group, acyloxy group, aliphatic oxy group, aromatic oxy group, aliphatic thio group, aromatic thio group, aliphatic sulfonyl group, aromatic sulfonyl group, sul7amoylamino group,
Examples include a nitro group, an imide group, and this R3
The number of carbon atoms contained in is preferably θ to 30. An example of cyclic R3 when m-2 is a dioxymethylene group.

When Q is 1, R1 is particularly preferably 100NR'R';
m is preferably 0, and R2 is 10OR directly bonded to NH.
', C0OR"-So□R"-CONR'R"
, -5o2NR'R'' are particularly preferred, and even more preferred are -C00RI0-COR8, - which bind directly to NO.
SO□RI0, and -〇〇0R10 is most preferred.

Also included in general formula (C-1) are compounds that form dimers or more multimers via R'-R3X.

When α=m-0, X preferably does not include a development inhibiting portion.

Specific examples of the coupler represented by the general formula (C-I) are JP-A-60-237448, JP-A No. 61-153640, JP-A No. 6
No. 1-145557, No. 62-45242, No. 48-
No. 15529, No. 50-117422, No. 52-18
No. 315, No. 52-90932, No. 53-52423
No. 54-48237, No. 54-66129, No. 55-32071, No. 55-65957, No. 55-
No. 105226, No. 56-1938, No. 56-126
No. 43, No. 56-27147, No. 56-126832
No. 5B-95346 and U.S. Pat. No. 3,488,193
and can be synthesized by the methods described therein.

Although the coupler represented by the general formula (C-I) can be added to any color-sensitive layer, it is generally added to the red-sensitive layer.

To add a coupler to a photosensitive material, the physical properties of the coupler (
For example, depending on the solubility), oil-in-water type emulsification dispersion method using water-insoluble high-purity-point organic solvent, alkaline dispersion method adding as an alkaline solution, Latenkes dispersion method, solid dispersion method adding directly as fine solid, etc. Various methods can be used.

The coupler represented by the general formula (C-1) may be used in combination with other cyan couplers, but in that case, the ratio of the coupler represented by the general formula (C-I) must be 10 mol% or more. preferable.

The amount of the coupler represented by the general formula (C-I) and the above-mentioned couplers to be used in combination is usually 1.5 mm per mole of silver halide as the total amount of couplers. OX 1.0-3 mol to 1.0 mol, preferably 5. OX 10-3 mol to g, OX 10
It is in the range of 1 mole.

Next, representative specific examples of the coupler represented by the general formula (C-I) are shown, but the present invention is not limited by these. C2Fl,0CONH ■ H C2H,0CONH -I =15 ■ ■ 2N ■ H ■ H ■ -I H Cl2 C-・I ■ ■ H -I H clhsOzNH -I ■ C,H,0CONH ■ ml-29 H OOH ■ ■ H CH, SO, NH OC82CH20H ■ ■ ■ 0■ C1j+26 C ■ ■ ■ ■-34 x:y:z=5:4:l(wt ratio)=26x:y:z=2:1:l ( wt ratio) C ■ CH2CH25CHICH2CO□H ■ OCH2CH2SCHC+ 2ozs CO□H ■ OCI(zcl12N)lsO2cH3■ NHCOCH2CH, Co , H ■ ■ 3〇- ■ C02)1 ■ OCI(, C0OH ■ ■ OCHzCHzSCH2COOH ■ =45 cso+s C・- I ■ C ■ ■ ■ ■ C2H.

■ SOlNa ■ 0(CI(,) 3COOH ■ OCHCOOI( l2H25 ■ -I H3 -N ■ OCR2CH2SCHCOOH IJ21 ■ OCH2CH2SCHC12826 OOH ■ 0(CHz), 5cHc+□La OOH ■ C ■ ■ ■ O CI□C0N11C+ 2825 ■ ■ -64 ■ ■ Silver halide emulsions used in the photosensitive compound of the present invention include:
Any of the conventional silver halide emulsions can be used.

The emulsion can be chemically sensitized by conventional methods, and can be optically sensitized to a desired wavelength range using a sensitizing dye.

Antifoggants, stabilizers, etc. can be added to the silver halide emulsion. Gelatin is advantageously used as binder for the emulsion.

The emulsion layer and other hydrophilic colloid layers can be hardened and can contain a plasticizer and a dispersion (latex) of a water-insoluble or sparingly soluble synthetic polymer.

A coupler is used in the emulsion layer of a light-sensitive material for color photography.

Furthermore, by coupling with a colored coupler having a color correction effect, a competing coupler, and an oxidized form of a developing agent, a developer, a silver halide solvent, a toning agent, a hardening agent, an antifoggant, and a chemical sensitizer can be obtained. Compounds that release photographically useful fragments such as spectral sensitizers, spectral sensitizers, and desensitizers can be used.

The photosensitive material can be provided with auxiliary layers such as a filter layer, an antihalation layer, and an antiirradiation layer. These layers and/or the emulsion layer may contain dyes that are washed out or bleached from the light-sensitive material during the development process.

A formalin scavenger-1 fluorescent whitening agent, a matting agent, a lubricant, an image stabilizer, a surfactant, a color fog preventive agent, a development accelerator, a development retardant, a bleach accelerator, etc. can be added to the photosensitive material.

As a support, paper laminated with polyethylene, etc.
Polyethylene terephthalate film, baryta paper, cellulose triacetate, etc. can be used.

The photosensitive material of the present invention is particularly useful as a negative photosensitive material.

To obtain a dye image using the photosensitive material of the present invention, after exposure,
Commonly known color photographic processing can be performed.

〔Example〕

Next, the present invention will be specifically explained with reference to Examples.

(Production Example 1) 500% 2.0% gelatin aqueous solution prepared at a temperature of 40°C for preparing the seed emulsion
m12, 4M (molar concentration)-AgNO, 4M-KBr containing 250 mQ of aqueous solution and 2X 10-'moQ of RhCQ3 according to the method described in JP-A-50-45437.
Br aqueous solution 250ml while controlling pAg to 9.0 and pH to 2.0 by the double chef method.
Added in 5 minutes. After adjusting the pH of the aqueous gelatin solution containing the AgX particles in the total amount of added silver to 5.5 with an aqueous potassium carbonate solution, Demol N 5 (manufactured by Kao Atlas Co., Ltd.) was used as a precipitant.
% aqueous solution and 244 mff of a 20% aqueous solution of magnesium sulfate as a polyvalent ion to cause coagulation.
400ml was added and dispersed again. The Ag Prepared.

This emulsion is designated as NE-1. As a result of electron microscopic observation, NE-1 was found to be a monodispersed emulsion consisting of cubic grains with an average grain size of 0.093 μm.

Next, under the same conditions as Production Example 1, before the end of crystal growth, KsRh
CQ@ lx 10-'mo12/moQ, silver added,
A seed emulsion was prepared. This emulsion is designated as NE-2. NE-
2 also has an average particle size of 0.093 μm as a result of electron microscopy observation.
It was a monodisperse emulsion consisting of cubic grains.

Next, under the same conditions as Production Example I, k 3 Rb was added before the end of crystal growth.
A seed emulsion was prepared by adding Ca6 in an amount of I x 10-' mol/mol silver. This emulsion is designated as NE-2. NE-2
As a result of electron microscopic observation, the emulsion was found to be a monodisperse emulsion consisting of cubic grains with an average grain size of 0.093 μm.

Example 1 Using the seed emulsion prepared in Production Example 1, according to the production method below, the average grain size was 0.4 μm, and the interior of the grains had a high Agl content and an average A and I content of 8 moQ%. A monodispersed emulsion Em-ISEm-2 consisting of silver oxide grains has an average grain size of 0.7 μm, and the interior of the grains has a high Agl content, with an average A
Monodispersed emulsion E consisting of silver iodobromide with a GL content of 8 mol%
m-3 was created. (Table 1 shows the emulsion and its contents.) (Production method) Using the seven types of solutions shown below, 15
Cores with Agl content of mol%, 5 mol% and 3 mol%/
Shell-type silver iodobromide emulsions Em-1 and Em-2 having an average grain size of 0.4 μm and an average Agl content of 8 mol % were prepared.

This manufacturing method was basically followed in the case of Em-3, but the detailed manufacturing method will be omitted.

(Solution A) Ossein gelatin 28.6 g 113 Average molecular weight 1700 Pronone (NOF) ethanol solution □A I *247°5”' 56% acetic acid aqueous solution 72.6mQ2
8% ammonia aqueous solution 97.2m (1
Seed emulsion prepared in Production Example 1 0.134 mol equivalent amount Dilute to 6600 ml with distilled water.

(Solution B) ossein gelatin Br I AI Make it 1300m+2 with distilled water.

(Solution C) ossein gelatin llr I AI Bring to 1700mQ with distilled water.

(Solution D) ossein gelatin Br I AI Make it 800+++Q with distilled water.

(Solution E) gNo3 3 g 460.2 g 113.3 g 665 mg 17 g 672.6 g 49.39 g 870 mg g 323.2 g 13.94 g 409 g 1777.2 g 28% ammonia water 1470 m (1
Make up to 2989m12 with distilled water.

(Solution F) 20% KBr aqueous solution pAg adjustment required amount (
Solution G) 56% acetic acid aqueous solution pH adjustment required amount *TAL
:4-Hydroxy-6-methyl-1,3,3a,7-titrazaindene 411 ' At O, add solution E and solution B to solution A by simultaneous mixing method using a mixing stirrer, and complete the addition of solution B. At the same time, solution C was added, and at the same time as the addition of solution C was completed, the solution was added. The control of pAg+ pH during simultaneous mixing and the addition rate of solution E, solution B, solution C and solution were performed as shown below.

pAg and pH were controlled by changing the flow rates of solution F and solution G using a roller tube pump with variable flow rate.

After finishing the solution and addition of solution E, the po was reduced to 6 with solution G.
, adjusted to 0. Next, it was washed with demineralized water in a conventional manner and dispersed in an aqueous solution containing 197.4 g of ossein gelatin.

Particle Growth Conditions Solution C Solution Table ■ (Preparation of Sample) Multilayer color photosensitive material No. 1 with upper and lower layer compositions having the compositions shown below on a subbed cellulose acetate support.
101 was created.

The coating weight is expressed in g/m2 per silver for silver halides and colloidal silver, in g/l112 for additives and gelatin, and the same for sensitizing dye couplers. It is expressed as the number of moles per mole of silver oxide in one layer.

In addition, the emulsion contained in each color-sensitive emulsion layer is optimally
(t) V C2H.

H C, I(.

C ■ H In addition to the above ingredients, a surfactant is applied to each layer Co-sensitizing dye ■ Sensitizing dye ■ Sensitizing dye ■ Sensitizing dye ■ ■ H H Sensitizing dye V S ■ Below, each layer of the above composition is explained. Hc, IL-1 as described above.

R-1, R-2, IL-2, (, -1, G-2, YC.

They shall be indicated by the abbreviations B-1, B-2, Pro-1, and Pro-2.

Preparation of sample No. 102 (comparison) Sample No. 101 was completely the same as sample No. 101 except that the coupler (C-1) in the third layer of 1Ol was omitted and the exemplified compound (C-1-42) was added in an equimolar amount. It was made in the same way.

Preparation of sample No. 103 (comparison) Except for the B-2 layer of sample No. 101, Em of the 13-1 layer was
Sample No. 10 was used except that instead of Em-2: Em-3 was mixed in a ratio of l=1 and then optimally sensitized and used.
It was produced in exactly the same manner as 1.

Preparation of Sample No. 104 (Invention) Sample No. 103 except that the exemplified compound (C-1-42) was added in an equimolar amount instead of the coupler (C-1) in the R-1 layer of Sample No. 103. It was made in exactly the same way.

Preparation of sample No. 105 (comparison) Omit the B-2 layer of sample No. 101 and prepare the B-1 layer EIll
Sample No. 1 was prepared in exactly the same manner as Sample No. 1 old, except that Em-1:Em-2 was mixed at a ratio of 1:1 in place of Em-2, and then optimally sensitized and used.

Preparation of Sample No. 106 (Invention) Sample No. 105 except that the exemplified compound (C, l-42) was added in an equimolar amount instead of the coupler (C-1) of the R, -1 layer. , 105 was created in exactly the same manner.

After each sample prepared in this way was wedge exposed using red light, the following development processing steps (A) and CB were performed.
) was carried out.

Processing steps: Color development 3 minutes 15 seconds bleaching 6 minutes 30 seconds washing with water 3 minutes 15 seconds fixing
Wash with water for 6 minutes and 30 seconds
Stabilization for 3 minutes and 15 seconds Drying for 1 minute and 30 seconds The composition of the treatment liquid used in each treatment step is shown below.

Color developer 4 Amino-3-methyl-N-ethyl-N(β-hydroxyethyl)-aniline sulfate 4.75 g Anhydrous sodium sulfite 4.25 g Hydroxylamine l/2 sulfate 2.0 g Anhydrous potassium carbonate 37. 5 g potassium bromide
1.3 g Nitrilotriacetic acid trisodium salt (l hydrate) 2.5 g Potassium hydroxide 1.0 g Add water to make 112 and adjust pH to 1O.02.

Iron (III) ethylenediaminetetraacetic acid Ammonium salt 100.0g Ethylenediaminetetraacetic acid 2 Ammonium salt 10.0g Ammonium bromide 150.0g Glacial acetic acid
Add 10.0g water and make 1
a) and adjust it to p)I6.0 using aqueous ammonia.

! Ammonium thiosulfate 175.0g Anhydrous ammonium sulfite 8.6g Sodium metasulfite 2.3g Add water to make If, and adjust to pH 6.0 using acetic acid.

Stabilizing liquid formalin (37% aqueous solution) 1.5ml
2 Konidax (manufactured by Konica Corporation) 7.5mff Add water to make 1Q.

Next, treatment step CB) was carried out in the same manner as treatment step (A) except that the various benefits of the bleaching treatment in treatment step (A) were changed to the following treatment liquid formulation. This bleaching solution is a schematic representation of the fatigued state in which a large amount of photosensitive material has been processed.

Treatment step CB) Bleach solution composition (D-1) Ammonium bromide 160.0g Aqueous ammonia (28%) 7.1m (2-ethylenediamine-tetraacetic acid sodium iron salt 117g glacial acetic acid
Add 14m12 water
900+o12 (D-2) Add 130g of sodium iron salt of ethylenediaminetetraacetic acid, put steel wool into IQ (D-2), close the stopper, leave it to dissolve Fe(I[I)-EDTA
After converting to Fe(II)-EDTA, this roomff
The treatment was carried out in the same manner as in the treatment step (A), except that (D-1) was added to prepare the bleaching solution for the treatment step (B).

Evaluation of recoloring property was performed as follows. The density change between the processing steps (A) and CB) of the highest cyan concentration part of the sample after processing is based on sample No. 101.103.105 (1
00), and sample numbers 102, 104, and 106 were determined as relative values. The smaller the value, the better the color restoration property.

Processing stability was determined using sample No. 1Ol, 103.105,
Sample No. when the variation in γ when developed with the developing solution pH 9.8 in the processing step (A) relative to γ when developed with the developing solution pH 10.2 in the processing step (A) is set as 100.

The relative value of the variation in γ of 102.104.106 was determined.

Here, γ is the fog of the sensitometric curve + 0.3
The slope obtained by connecting the two points of fog and fog +0.8 with a straight line was used.

The results are shown in Table 2.

From the results in Table 2, it can be seen that sample No. 104.106 of the present invention has improved color restoration properties and processing stability.

In addition, except for the G-2 layer of samples No. 1, the E of the G-1 layer
II+-2 was replaced with Em-2: Em-3-1: 1, and the G-2 layer of sample No. 1O1 was omitted and G-
One layer of EIll-2 is Em-1:Em2=1:
Regarding the sample in which Coupler 1 was substituted, the same effect was obtained when the coupler of general formula (C-1) was substituted.

Furthermore, Sample No. 1 and Sample No. 1 from which the old B-2 layer was omitted.

Omit B-2 of 101 and convert Em-2 of B-1 layer to EI11
When the coupler (C-1) was replaced, the effect of the present invention was obtained.

Furthermore, sample No. 104 coupler (C-1-42
) instead of (C-1-4), (C-1-6), (01-
9) for each sample.

Preparation of sample No. 205 (comparison) Em-2 and Em-3 of the ll-1 layer, G-1 layer and B-1 layer of sample No. 203 were Em-1: Em-2=
It was produced in exactly the same manner as sample No. 101 except that the ratio was changed to 1:1.

Sample No., 206-20g (present invention) Production sample No.
, (C-1-42), (C-1-20), (c-
Sample No. 205 except that 1-29) were added respectively.
It was made in exactly the same way.

Samples Nos. 201 to 208 thus obtained were wedge exposed to red light, developed, and evaluated for color restoration and processing stability in the same manner as in Example 1. Table 3 shows the results.

In place of the coupler (C-1-42) of sample No. 106, (C-1-7), (C-1-8), (C
The effects of the present invention were also obtained for each sample using -1-31).

Example 2 A sample was prepared in the same manner as in Example 1. Sample No., 102 new No. 2 old, sample No. 102 new No.
, 202.

Preparation of sample No. 203 (comparison) Omit the R-2 layer, G-2 layer, and B-2 layer of sample No. 101, and add Em-2 of the R-1 layer, G-1 layer, and B-1 layer. Instead, Sample No.
It was produced in exactly the same manner as No. 101.

Preparation of sample No. 204 (present invention) Except for adding the exemplified compound C-1-42 instead of the coupler ((,-1) in the R-1 layer of sample No. 203.
3, replace C-1-24, C-1-44, C-1-49 with sample No. 207+') Coupler C-1-201: Replacement-
cc-126, C-1-54, C-1-57, sample N
o, 208 01-291m replacement Te C-1-34, C-
The effects of the present invention were also obtained for the sample using No. 1-61.

From the results in Table-3, the present invention sample (7) No. 204.2
06.207.208, when the cyan coupler according to the present invention is used with a single emulsion layer, the effect of improving the recoloring property and the processing stability is remarkable, and when compared with Example-1, the blue sensitivity is The effect of the present invention is remarkable because all three layers, the green-sensitive layer and the red-sensitive layer, are made into a single layer.

Claims (1)

[Scope of Claims] In a silver halide color photographic material having blue-sensitive, green-sensitive, and red-sensitive color-sensitive layers on a support, at least one color-sensitive layer is composed of a single layer. 1. A silver halide color photographic light-sensitive material, wherein at least one color-sensitive layer contains at least one cyan coupler represented by the following general formula [C-1]. General formula [C-1] ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (In the formula, R^1 is -CONR^4R^5, -NHCOR
^4, -NHCOOR^6, -NHSO_2R^6, -
NHCONR^4R^5 or -NHSO_2NR^4
R^5 represents a monovalent group, R^3 represents a substituent, and X represents a hydrogen atom or a group that leaves by reaction with an oxidized aromatic primary amine developer. , l represents 0 or 1, m represents an integer from 0 to 3, R^4 and R^
5 represents a hydrogen atom, an aromatic group, an aliphatic group, or a heterocyclic group, and R^6 represents an aromatic group, an aliphatic group, or a heterocyclic group. When m is 2 or 3, each R^3 may be the same or different, and may combine with each other to form a ring, or R^4 and R^5, R^2 and R^3 , R^
2 and X may be combined to form a ring. However, when l is 0, m is 0, and R^1 is -CONHR
^7, and R^7 represents an aromatic group. )