JPH0220859A - Silver halide color photographic sensitive material - Google Patents

Abstract

PURPOSE:To improve the sharpness and the development processing property of the title material by specifying the total amount of a coated silver, couplers for masking of a red photosensitive layer, a green photosensitive layer and a blue photosensitive layer, and the unit mol.wt. of the coupler, respectively. CONSTITUTION:The reduction of the amount of the coated silver is strongly desired, in resource saving and development processing loading, and a problem about especially the remarkable deterioration of the optical density of a yellow pigment picture occurs as the effect of the photographic characteristics of the photosensitive material caused by the reduction of the coated silver. Namely, the total amount of the coated silver is specified to 15-45mg/dm<2>, and a cyan coupler for the masking is incorproated in at least one layer of the red photosensitive layers, and a magenta coupler for the masking is incorporated in at least one layer of the green photosensitive layers, and a hydrophilic diequivalent yellow coupler having the unit mol.wt. of 400-700 is incorporated in at least one layer of the blue photosensitive layers. Thus, the excellent sharpness and the stable characteristic of the photosensitive material even at the time of development processing it, in spite of the big reduction of the amount of the coated silver are obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a silver halide color photographic light-sensitive material, and more particularly to a silver halide color photographic light-sensitive material having excellent sharpness and development processability.

[Background of the invention]

In silver halide color photographic materials, optical information stored in silver halide oxidizes a color developing agent during development and couples with a coupler to form a dye, and the optical information is fixed as a dye image. It is something. Although silver halide and developed silver are now being removed during the development process and recycled after recovery, there is a strong desire to reduce the amount of coated silver from the viewpoint of resource conservation and development process load. The effect of reducing the amount of coated silver on photographic properties is that the density of yellow dye images is particularly reduced. For forming yellow dye images, σ-pivaloylacetanilide couplers and a-benzoylacetanilide couplers are generally used, but these yellow couplers have a smaller molecular extinction coefficient than other magenta couplers and cyan couplers. Therefore, in order to obtain the required color density, it is necessary to apply a large amount of yellow coupler, which has the disadvantage that sharpness decreases due to an increase in the thickness of the emulsion layer, and yellow density decreases in a low replenishment system of processing solution. It has the disadvantage of

In contrast, proposals have been made to polymerize yellow couplers to increase the color density per unit weight and reduce the thickness of the emulsion layer, for example, in JP-A-52-150631 and JP-B-Sho.
No. 4-13375 or U.S. Pat. No. 3,370,952, etc., but these couplers have low coloring performance, inappropriate spectral absorption of coloring dyes, and deteriorate color reproducibility. This was not desirable because it caused unnecessary capri.

[Purpose of the invention]

The first object of the present invention is to provide a low silver content silver halide color photographic light-sensitive material with excellent sharpness, and the second object is to provide a silver halide color photographic material with excellent sharpness. An object of the present invention is to provide a silver oxide color photographic material.

[Structure of the invention]

The above objects of the present invention are achieved by the following.

That is, the total coating silver amount is 15 to 45 a+g/dm'',
The support has at least one red photosensitive layer, one green photosensitive layer, and one blue photosensitive layer, at least one of the red photosensitive layers contains a cyan coupler for masking, and at least one of the green photosensitive layers contains a masking cyan coupler. This is achieved by a silver halide color photographic light-sensitive material containing a magenta coupler for coloring, and at least one layer of the blue light-sensitive layer containing a hydrophilic 2-equivalent yellow coupler having a unit molecular weight of 400 to 700. .

The low molecular weight 2-equivalent yellow coupler of the present invention preferably has a unit molecular weight represented by the following general formula CI) of 400 to 7.
00 lipophilic 2-equivalent yellow coupler.

In the formula, R3 represents an alkyl group or an aryl group; represents a group, and m represents an integer of 0 to 4. When m is 2 or more, each R2 may be the same or different. Further, R,, R,, X or 2 may serve as a divalent to tetravalent linking group to form a dimer to tetramer of the yellow coupler represented by the general formula (l).

To explain the general formula CI) in more detail, R4 preferably represents a linear or branched alkyl group having 1 to 30 carbon atoms, a cycloalkyl group, or a phenyl group, and each of these groups includes those having a substituent; Examples of substituents include halogen atoms, alkyl groups, aryl groups, alkoxy groups, aryloxy groups, alkylthio groups, arylthio groups, carbamoyl groups, sulfamoyl groups, acylamino groups, sulfonamide groups, alkyloxycarbamoyl groups, nitro groups, and cyanogen groups. , hydroxyl group, amino group, alkylamino group, arylamino group, etc.

Among R1, a tertiary alkyl group or a 4-alkoxyphenyl group is preferred, and a t-butyl group and a 4-methoxyphenyl group are most preferred.

X represents a hydrogen atom, a halogen atom (fluorine atom, chlorine atom, bromine atom, etc.) or preferably an alkoxy group having from I to 24 carbon atoms, and among these, a chlorine atom or an alkoxy group is preferable. The alkoxy group includes those having substituents, and examples thereof include those listed as substituents for the alkyl group represented by R above.

Examples of the substituent represented by R2 include a halogen atom (
fluorine atom, chlorine atom, etc.), alkyl groups having 1 to 20 carbon atoms, aryl groups, alkoxy groups, aryloxy groups, acylamino groups, sulfonamide groups, carbamoyl groups, sulfamoyl groups, acyloxy groups, substituted amine groups (e.g. ethylamino , anilino)alkylthio group, ureido group, sulfamoylamino group, cyano group, alkoxycarbonyl group, alkyloxycarbonylamino group, imido group, alkylsulfonyl group, arylsulfonyl group, heterocyclic group, and the like.

These groups further include those having a substituent, and examples of the substituent include the same substituents as the alkyl group represented by R1. Among R2, preferred are an acylamino group, a sulfonamide group, an alkoxycarbonyl group, a sulfamoyl group, and a sulbamoyl group.

Groups that can be separated by a force/knobling reaction with the oxidized color developing agent represented by 2 include, for example, aryloxy groups, heterocyclic oxy groups, alkoxy groups, acyloxy groups, alkylsulfonyloxy groups, and arylsulfonyloxy groups. , an alkylthio group, an arylthio group, a heterocyclic thio group, or -N 之 (2 represents a group of nonmetallic atoms that can form a monocyclic or condensed 5- to 7-membered heterocycle with N, such as torole, pyrazole, , imidazo-J, 1.2.4-triazole, tetrazole, indazole, benzimidazole, benzotriazole, succinimide, phthalimide, saccharin, oxazolidine-2,4-dione, imidazolidine-2,4- dione, thiazolidine-2,4-dione, urazole, 2
-pyridone, 5-tetrazolone and the like. ) etc. These groups further include those having a substituent, and examples of the substituent include the same substituents as the alkyl group and aryl group represented by R1. 2, preferably an aryloxy group, an imidazolidine-2,4-dione-3-yl group, an oxazolidine-2,4-dione-3-yl group or a triacylidin-3,5-dione-4-yl group. be.

m is preferably θ~2.

The yellow coupler represented by general formula CI) may be a 2- to 4-membered member as described above, but is preferably a monomer or a dimer.

The unit molecular weight in the present invention refers to the value obtained by dividing the molecular weight of one molecule by the number of coupling positions in one molecule of yellow coupler.

The yellow coupler of the present invention has a unit molecular weight of 400 to 70.
0, but preferably when R1 is an alkyl group, the unit molecular weight is 500 to 600;
When is an aryl group, the unit molecular weight is 500 to 700.

Specific examples of the low molecular weight 2-equivalent yellow coupler of the present invention are shown below. The unit molecular weight for each coupler is shown in parentheses.

Y-9 Y-10 -ia Y Masking coupler improves the deterioration of color reproducibility due to secondary absorption of magenta coupler and cyan coloring dye. For example, a masking coupler is added to the active point of the coupler. Couplers with substituted dyes, couplers with an azo group substituted at the active site of the coupler, and couplers themselves used as part of the masking dye (the above two types are referred to as colored couplers). A leuco form of a masking dye is substituted at the active site of the leuco form, and the leuco form is
The reaction of the coupler with the oxidized form of the color developing agent results in its removal from the photographic material, but where this reaction does not take place, subsequent oxidation steps (e.g. a bleaching step with red blood salts)
For example, in the method described in JP-A No. 63-75747, where the leuco moiety is changed into a masking dye, the masking dye substituted at the active site of the coupler is changed to -temporally short wavelength by a protecting group. For example, those described in JP-A-62-145243 are mentioned.

In the present invention, any of these masking couplers can be used.

In the present invention, when a colored cyan coupler is used, it is preferably a compound represented by the following general formula [A].

General formula [A] OUP * In the formula, coop represents a cyan coupler residue, * represents a coupling site of cyan coupler, J represents a divalent linking group, m represents 0 or l, and R6 represents an aryl group. represents.

The cyankabra residue represented by coup includes a phenol type coupler and a 7-tole type coupler residue, and particularly preferably a naphthol type coupler residue.

A preferable divalent linking group represented by J can be represented by the following general formula [B].

General formula [B] is represented. R6 represents an alkylene group having 1 to 4 carbon atoms or a spanning arylene group, R7 represents an alkylene group having 1 to 4 carbon atoms, and the alkylene groups of R6 and R7 are alkyl groups, carboxy groups, hydroxy groups, or sulfo groups. May be replaced.

R9 Z is -c-, -o-, -s-, -5o-, -so, -
RI〇ichi 302NH-, -CONH-, -COO--NHCO
--N1 (represents SO2-, -0CO-, RSR10
represents an alkyl group or an aryl group.

R8 is a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, a hydroxy group, a cyano group, a nitro group, a sulfonyl group,
It represents an alkoxy group, an aryloxy group, a carboxy group, a sulfo group, a halogen atom, a carbonamide group, a sulfonamide group, a carbamoyl group, an alkylsulfonyl group, or a sulfamoyl group.

p represents 0 or a positive integer, q represents 0 or ■, and r represents an integer from 1 to 4.

When p is 2 or more, R6 and Z may be the same or different. When r is 2 or more, R8 may be the same or different.

When the aryl group represented by R5 is m-0,
Phenyl and 7-tyl groups are preferred.

The phenyl group and naphthyl group can have a substituent, and the substituent includes a halogen atom, an alkyl group,
Alkoxy group, aryloxy group, hydroxy group, acyloxy group, carboxyl group, alkoxycarbonyl group, aryloxycarbonyl group, mercapto group, alkylthio group, arylthio group, alkylsulfonyl group,
Examples include arylsulfonyl group, acyl group, acylamino group, sulfonamide group, carbamoyl group, and sulfamoyl group.

When Q=1, the aryl group represented by R3 is preferably a naphthol group represented by the following general formula [C].
C] In the formula, R1 is a linear or branched alkyl group having 1 to 4 carbon atoms (for example, a methyl group, an ethyl group, a propyl group,
isopropyl group, butyl group, S-butyl group, t-butyl group, etc.), and M is a photographically inert cation, such as a hydrogen atom, an alkali metal cation such as sodium or potassium atom, ammonium, Methylammonium, ethylammonium, diethylammonium,
It represents triethylammonium, ethanolammonium, jetanolammonium, pyridinium, piperidium, ammonium, toluidinium, p-nitroanilinium, anisidium, etc.

Next, specific examples of typical colored cabras represented by the general formula [A] will be shown, but they are not limited to C-4 C-5 C-6 C C-2 C-3 C-7 C-a C-9 C lo CC-13 C-11 CC-14 C The above compounds are described in JP-A-50-123341 and JP-A-50-123341.
-65957, No. 56-94347, Special Publication No. 1977-
No. 11304, No. 4432461, No. 48-1789
No. 9, No. 53-34733, U.S. Patent No. 3,034,8
It can be synthesized by the method described in No. 92, British Patent No. 1,084.480, etc.

In the present invention, the colored cyan coupler is used in an amount of 5 to 95 mol % based on the total cyan coloring coupler.

When using colored magenta couplers in the present invention, those represented by the following general formula are preferred.

General Formula [I[1] %Formula% In the formula, cp represents a magenta coupler residue, provided that the azo group is bonded to the active site of the magenta coupler. ), R
3 represents an aryl group (including one having a substituent).

The magenta coupler residue represented by Cp is preferably a coupler residue derived from a 5-pyrazolone magenta coupler or a pyrazolotriazole magenta coupler, and a particularly preferable one is represented by the following general formula [IV].

In the formula, R2 represents an aryl group, R1 represents an acylamino group, anilino group, ureido group, or carnochlorine group, and each R2 and R3 includes those having a substituent.

The aryl group represented by R2 is preferably a phenyl group. Examples of substituents for the aryl group represented by R2 include halogen atoms (e.g., fluorine, chlorine, bromine, etc.), alkyl groups (e.g., methyl, ethyl, etc.), alkoxy groups (e.g., methoxy, ethoxy, etc.), and aryloxy groups. (e.g., phenyloxy, naphthyloxy, etc.), acylamino groups (e.g., benzamide, α-(2,4-di[-amyl]oxy)butyramide, etc.), sulfonylamino groups (e.g., benzenesulfonamide, n-hexadecane), sulfonamide, etc.), sulfo-moyl groups (e.g., methylsulfamoyl, phenylsulfamoyl, etc.), carbamoyl groups (e.g., n-butylbamoyl, phenylcarbamoyl, etc.), sulfonyl groups (e.g., methylsulfonyl, n-butylene, phenylcarbamoyl, etc.), -doacylsulfonyl, benzenesulfonyl, etc.), acyloxy group, ester group, carboxyl, sulfo, cyano, nitro, etc.

Furthermore, specific examples of R2 include phenyl, 2゜4.6
-dolychlorphenyl, pentachlorphenyl, pentafluorophenyl, 2.4.6-dolymethylphenyl,
2-dichloro-4.6-dimethylphenyl, 2.6-dichloro-4-methylphenyl, 2.4-dichloro-6-methylphenyl, 2.4-dichloro-6-methoxyphenyl, 2゜6-dichloro- 4-methoxyphenyl, 2.6
-dichloro-4-[α-(2,4-di-t-amylphenoxy)acetamido]phenyl, and the like.

Examples of the acylamino group represented by R3 include pivaloylamino, n-tetradecanamide, α-(3-pentadecylphenoxy)butyramide, 3-[α-(2
, 4-di-t-amylphenoxy)acetamidobenzamide, benzamide, 3-acetamidobenzamide, 3-(3-n-dodecylsuccinimide)benzamide, 3-(4-n-doacyloxybenzenesulfonamide)benzamide, etc. Can be mentioned.

Examples of the anilino group represented by R3 include anilino, 2-chloroanilino, 2,4-dichloroanilino, 2
．． 4-dichloro-5-methoxyanilino, 4-cyanoanilino, 2-chloro-5-[α-(2,4-di-t-amylphenoxy)butyramide]anilino, 2-diO-5-(3-octa decenylsuccinimide) anilino, 2-riO-5-n-tetradecanamide anilino,
Examples include 2-chloro-5-[α-(3-t-butyl-4-hydroxyphenoxy)tetradecanamide anilino, 2-chloro-5-n-hexadecanesulfonamide anilino, and the like.

Examples of the ureido group represented by R3 include methylureido, phenylureido, 3-[α-(2,4-di-t-amylphenoxy)butyramide] phenylureido, and the like.

The carbamoyl group represented by R3 is, for example, n-
Tetradecylcarbamoyl, phenylcarbamoyl, 3
-[α-(2,4-di-t-amylphenoxy)acetamide J phenylcarbamoyl and the like.

The aryl group represented by R1 is preferably a phenyl group or a naphthyl group.

Examples of substituents for the aryl group represented by R1 include a halogen atom, an alkyl group, an alkoxy group, an aryloxy group,
Examples include hydroxy group, acyloxy group, carboxyl group, alkoxycarbonyl group, aryloxycarbonyl group, alkylthio group, arylthio group, alkylsulfonyl group, arylsulfonyl group, acyl group, sulfonamide group, carbamoyl group, and sulfamoyl group.

Particularly preferred substituents are an alkyl group, a hydroxy group, an alkoxy group, and an acylamino group.

Next, specific examples of the colored magenta coupler represented by the general formula [■] will be described, but the invention is not limited thereto.

I+''t M-3 CM-4 CM-5 M-6 M-10 M-11 M-12 ShiL Shit LL -35- t M-7 M-8 M-15 ShiL ShiL t M M- 17 ShiLM-19 M-24 The colored magenta coupler according to the present invention is disclosed in Japanese Patent Application Laid-open No. 49
-123625, 49-131448, 52-
No. 42121, No. 52-102723, No. 54-52
No. 532, No. 58-172647, U.S. Patent No. 2,7
No. 63.552, No. 2,801.171, No. 3,51
It can be synthesized according to the method described in No. 9.429.

In the present invention, the colored magenta coupler is used in an amount of 5 to 95 mol % based on the total magenta coupler.

As the silver halide emulsion used in the light-sensitive material of the present invention, any conventional silver halide emulsion 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, or an oxidized product of a developing agent, a development accelerator, a bleach accelerator, a developer, a silver halide solvent,
Compounds that release photographically useful fragments such as toning agents, hardeners, fogging agents, antifoggants, chemical 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.

For photosensitive materials, formalin scavenger-fluorescent brightener,
A matting agent, a lubricant, an image stabilizer, a surfactant, a color antifoggant, a development accelerator, a development retardant, a bleaching accelerator, etc. can be added.

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

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

〔Example〕

Specific examples of the present invention will be described below, but the embodiments of the present invention are not limited thereto.

In all the examples below, the additives in the silver halide photographic light-sensitive materials were 111! unless otherwise specified. Shows the number of grams per serving. In addition, silver halide and colloidal silver are shown in terms of silver.

Example 1 On a triacetylcellulose film support, each layer having the composition shown below was sequentially formed from the first layer to the fifth layer and the sixth layer.
A multilayer color photographic element sample 1 was prepared by forming layers from the support side to the 9th layer and the 1θth layer to the 13th layer.

Sample-101 (comparison) 1st layer; antihalation layer (HC-1) black colloidal silver 0.20 UV absorber (UV
-1") 0.20 high boiling point solvent (O1Q-
1) 0.10 gelatin
1,5 2nd layer; Intermediate layer (IL-1) UV absorber (U v -1) 0.01 High boiling point solvent (O1Q-1) 0.10 Gelatin
1.5 Third layer; Low sensitivity red-sensitive emulsion layer (RL) Silver iodobromide emulsion (E m -1-■) 0.3tt (
Em2-■) 0.3 Sensitizing dye (sD-1) 2.5x 10-' (mol/silver 1
mol)// (SD-2)2.5XlO-'(//
)// (SD-3)0.5X 10-'(/
/ ) Cyan coupler (C-1) 0
．． 59// (C-2) 0.03
Colored cyan coupler (CC-1) 0.03DIR
Compound (D-1) 0.001 High boiling point solvent (O1Q-1) 0.293 Gelatin
1.0 4th layer; High sensitivity red-sensitive emulsion layer (RH) Silver iodobromide emulsion (E m -3-■) 0.6 Sensitizing dye (S
D-1)2. Ox 10-' (mol/silver 1 mol)//
(so-2)2. Ox lO-'(tt)/
/ (SD-3)0. lX 10-'(/I
) Cyan Cabra (C-1) 0.23//
(C-2) 0.012 colored cyan coupler (CC-1) 0.012 DIR compound (D-1) 0.04 high boiling point solvent (O
1Q-1) 0.2 gelatin
0.6 5th layer: Intermediate layer (IL-2) Polymethyl methacrylate (average grain size 3μ) 0.05 Gelatin 0.5 6th layer: Low-speed green-sensitive emulsion layer (GL) Silver iodobromide emulsion (E m -1-■) 0.6 sensitizing dye (S
D-4) 5X 10-' (mol/silver 1 mol)tt
(so-5) lx 10-' (tt) magenta coupler CM-1) 0.45 colored magenta coupler (CM-1) 0.01 DIR compound (
D-3) 0.02// (D-4
) 0.02 high boiling point solvent (O1Q-1)
0.28 gelatin
1-0 7th layer; Intermediate layer (IL-3) Gelatin 0.8 8th layer; High-sensitivity green-sensitive emulsion layer (GH) Silver iodobromide emulsion (E m -3-■) 0.8 Sensitizing dye (S
D-6) 1.5X 10-' (mol/silver 1 mol)//
(SD-7)2.5X 10-'(// )/
/ (SD-8)0.5X 10-'(//
') Magenta coupler (M -2') 0.0
3// (M-3) 0.08 colored magenta coupler (CM-1) 0.04 DIR compound (D-3) 0.008 high boiling point solvent
(OiQ-3) 0.4 gelatin
1.0 9th layer; yellow filter layer (YC
) Yellow colloidal silver 0.1 Color stain inhibitor (S C-1) 0.1 High boiling point solvent (OiQ
-3) 0.1 polymethyl methacrylate (average grain size 3μ) 0.05 gelatin 0.8 1st theta layer; low sensitivity blue-sensitive emulsion layer (BL) silver iodobromide emulsion (E m-1
-■) 0.15// (Em2-■)
0.15 sensitizing dye (SD-10) 7X 10-'(
mole/1 mole of silver) Yellow Cabra (YA-1)...
0.7// (YA-2) 0.1
5 DIR compound (D-2) 0.15 High boiling point solvent (Oiff -3) 0.4 Gelatin
1.0 11th layer; High-speed blue-sensitive emulsion layer (BH) Silver iodobromide emulsion (E m -4-■) 0.
15tt (E m -1-■) 0.15
Sensitizing dye (SD-9) IX 10-' (mol/silver 1 mol) // (SD-10) 3 X lO-4 (mol/silver 1 mol) Yellow coupler (YA-1)... 0
．． 35// (YA-2)
0.06 High boiling point solvent (OiQ -3) 0
．． 18 gelatin 0.5 12th
Layer: First protective layer (PRO-1) UV absorber (UV-1) 0.10tt
(UV-2) 0.05 high boiling point solvent (O1
Q-1) 0.1// (Oi124)
0.1 gelatin 1.
0 13th layer; 2nd protective layer (PRO-2) Fine grain silver iodobromide emulsion (average grain size 0.08 μAg 12 mol %) 0.1 Surfactant (SU-1') 0.005 Polymethyl methacrylate ( Average particle size 3μff1) 0.20 gelatin
0.6 In addition to the above composition, each layer contains a coating aid S u-2.

Dispersing aid S u-3, hardeners H-1 and H-2, stabilizers 5T-1, and antifoggants AF-1 and AF-5D-1 were added.

E m-1-■ Average particle size: 0.46 μm.

Average silver iodide content...7.0 mol%.

Monodisperse (width of distribution 14%) surface Emulsion containing low silver iodide (2 mol%) E m -2-■ Average particle size 0.30μvr.

Average silver iodide content...2.0 mol%.

Monodisperse (width of distribution 14%) Silver bromide-containing emulsion Average particle size: 0.81μ.

Average silver iodide content...7.0 mol%.

Monodisperse (width of distribution 14%) surface Emulsion containing low silver iodide (1.0 mol%) Average particle size: 0.95μ Tsuru.

Average silver iodide content...8.0 mol%.

Monodisperse (width of distribution 14%) surface E m-4-■ E m-3-■ D-2 D-3 D-4 D-5 D-9 D-6 D-10 D-7 ( C2H5)3NHe D-8 Q c-t M-1 t M-1 Q A-1 A-2 H-2 [(CJ = CHSO*CHz) 5ccH* S
O2(CH2) 21 zN(CH*) xsOsK
u-1 V-1 S u-2 ■ It.

S　　　　　-3 C- V-2 S-1 C2H.

S-2! 2-2 H υ■ C9H19Lt) T-1 F-1 0■ F-2 1st theta layer yellow coupler (YA-1)...1. Og
/a"〃(Y A -2) -0.2g/m'
High boiling point solvent (Oi 1-3) -0.6g
/m” gelatin...1.
4g/m” 11th layer yellow coupler (YA-1)...0-9g
/m”// (Y A -2) ・・
・0.2g/a” high boiling point solvent (Oil-3)
...0.5g/s” gelatin
...1.5 g/s" On the other hand, the yellow couplers (YA-1) and (YA-
Samples 3 to 8 were prepared in the same manner as Sample-1 except that 2) was changed to the same amount as shown in Table-1.

Yellow coupler (Y
A-1), (YA-2), high boiling point solvent (Oil-3),
The sample was - except that the amount of gelatin added was changed as follows.
Sample 2 was prepared in the same manner as Sample 1.

Each of the samples Nos. 1 to 8 prepared in this manner was subjected to wedge exposure using nitrilotriacetic acid trisodium salt (l hydrate) white light, and then subjected to the following development treatment.

Processing process (38°C) Color development 3 minutes 15 seconds bleaching
Wash with water for 6 minutes and 30 seconds
3 minutes 15 seconds fixation 6 minutes 30 seconds washing 3 minutes 15 seconds stabilization
Drying for 1 minute and 30 seconds The composition of the treatment liquid used in each treatment step is as follows.

[Color developer]

4-Amino-3-methyl-N-ethyl-N-(β-hydroxyethyl)-aniline sulfate 4.75
g Anhydrous sodium sulfite 4.25 g Hydroxylamine 1/2 sulfate 2.0 g Anhydrous potassium carbonate 37.5 g Sodium bromide 1.3 g 2.5 g Potassium hydroxide 1.0 g Add water to make 1O.

[Bleach solution]

Ethylenediaminetetraacetic acid iron ammonium salt 00g Ethylenediaminetetraacetic acid diammonium salt 10.0g Ammonium bromide 150.0g Glacial acetic acid 10.0ml 12 Add water to make 1Q, and adjust to pH 6.0 using aqueous ammonia.

[Fixer]

Ammonium thiosulfate 175.0g Anhydrous sodium sulfite 8.5g Sodium metasulfite 2.3g Add water and lI
2 and adjust the pH to -6.0 using acetic acid.

[Stabilizing liquid]

Formalin (37% aqueous solution) 1.5mf
f Konidax (manufactured by Konica Corporation) 7.5n+
ff Add water to make lQ.

Furthermore, in order to evaluate sharpness, the MTF value was measured at 40 cycles per 1 mm after exposure through a pattern for MTF measurement and the same development process.

Table 2 shows the maximum blue light density of each sample and the relative value of the MTF value at 40 cycles/mm measured with a blue filter (Sample-1 was taken as 100).

Table 2 Using an automatic developer, the color developing solution was sample IIl! Under the condition that the color developing bath is replenished at a rate of 900 mff per color,
After continuously treating 500 m2, the maximum blue light density of each sample was measured. The results are shown in Table-3.

Table-3 Further regarding samples-1 to 8, JP-A-61-243453
According to Tables 2 and 3, the low silver content light-sensitive material containing the yellow coupler of the present invention not only has a high maximum density and excellent sharpness, but also has a low It can be seen that it is an excellent product that can provide stable performance even in the development process of the replenishment system. Furthermore, the effect of the present invention was also observed when Y-31 was used in place of Y-10 in Sample 8.

Example-2 Only the amount of coated silver in each photosensitive layer of Sample-4 of Example-1 is shown.
Samples-21 to 25 were prepared by changing the procedure in Example 4, and the same evaluation as in Example-1 was performed.
The effect of the present invention was obtained similarly to Sample-4, but Sample-4
21 had large performance fluctuations in the low replenishment system, and sample-2
No. 5 had an insufficient maximum concentration.

Example 3 - The following sample 31 was prepared as a multilayer color photographic element in the same manner as in Example 1.

1st layer (antihalation layer) Black colloidal silver...0.2 gelatin V-1 2nd layer (intermediate layer) 3rd gelatin layer (first red-sensitive emulsion layer) Silver iodobromide emulsion (Al12 mol%, Particle size 0.3 μ, coefficient of variation 29%, irregularly shaped particles) Coated silver amount...0.3 Gelatin...0.45D-1
...1. OX 10-' 5D-2...3. OX 10-'5D-3・lXl0-' C-1...0.08 C-2...0.08 cc-t...0.0I
D-1...0.003 0i1-1...0.03
4th layer (second red-sensitive emulsion layer) Silver iodobromide emulsion (Agl 5 mol%, ■ type, grain size 0.7μ
,...1.0...1.3...0.1...0. Ol...0.01 Coefficient of variation 25%, amorphous particles) Coated silver amount...0.4 Gelatia...0.6SD-
1. lXl0-' 5D-2...3 X 10-' 5D-3. IXIG-' C-1...0.20 C-2...0.25 CC-1..., 0. 03 D-1...0.01 Oi1-1
...0.15 Fifth layer (third red-sensitive emulsion) Silver iodobromide emulsion (Ag 40 mol%, grain size 0.8 μ, coefficient of variation 16%, amorphous grains) Coated silver amount ...0.7 Gelatin...0.85D-1
... lXl0 Ichiban 5D-2...3 X 10-'5D-3・lXl0-' C-1...0.4 C-2...0.8 CC-1...0. 1 0i1-1
...0.0ID-1...0.05 6th layer (middle layer) Gelatin ...1.03C
-1...0.03 0i1-1...0.05
7th layer (first green-sensitive emulsion layer) Silver iodobromide emulsion (Agl 2 mol%, grain size 0.3 μ, coefficient of variation of relief diameter 28%, amorphous grains) Coated silver amount...0
．． 2 ...5 X 10-' ...2 X 10-' ...0.3X 10-' ...0.8 ...0.16 ...0.005 ...0.01 ...0.5 D-4 D-5 D-6 Gelatin M-1 0 stitches-1 8th layer (second green-sensitive emulsion layer) Silver iodobromide emulsion (Agl 4 mol%, grain size 0.6μ , coefficient of variation 38%, amorphous particles) Coated silver amount...0.3 Gelatin...0.85D-
4・5X10-' 5D-5...2×lO bow S D-6・0.3X 10-' M-1...0.20 D-3...0.02 CM-1... 0.04 0i1-1...0.2 9th layer (third green-sensitive emulsion layer) Silver iodobromide emulsion (Agl 6 mol%, grain size 1.0 μ, coefficient of variation 80%, amorphous grains) coating Silver content...0.6 Gelatin...0.83D-
7...3.5X 10-' 5D-8...1.4X 10-' M-3...0.15 M-2...0.05 D-4...0.01 0・i I-30,20 1st theta layer (yellow gelatin yellow colloid C-1 11th layer (first emulsion layer) Silver iodobromide emulsion (Agl 4 mol%, grain size 0.5 μ, coefficient of variation 15 %, octahedral particles) Coated silver amount...0.2 Gelatin...0.85D-
9...2 -3...0.20
12th layer (second blue-sensitive emulsion layer) Silver iodobromide emulsion (Ag 110 mol%, grain size 1.3 μ, coefficient of variation 25%, amorphous grains) Coated silver amount...0.3 Gelatin...0 .5SD-
9. lXl0-'...1.2...0.08...0.1...0.3 Ilter layer) Silver SD -10...5Xlθ-6 Y-1... 0.20 0+1-3
...0.06 13th layer (first protective layer) Gelatin ...0.8UV
-1...0. l UV-2...0.2 0+1-1...0,01
O1・1-2...0. O
11 No. 14 (Second protective layer) Fine grain silver bromide (average grain size 0.07μ) ...0.1
Gelatin...0.45 Polymethyl methacrylate (diameter 3.0μ)...0.2 H-1...0.4 In addition to the above ingredients, a surfactant is added to each layer as a coating aid. Sample 31 was produced in this manner.

Yellow coupler in the 11th and 12th layers of sample-31 (
YA-1), (YA-2), high boiling point solvent (Oil-3)
Sample-32 was prepared in the same manner as Sample-31 except that the amount of gelatin added was changed as follows.

(11th layer) Yellow coupler (YA-1)...1. Og
/m weighttt (Y A -2) -0
, 3g7+a” high boiling point solvent (Oil-3)
...0.4g/+" gelatin
...1.4g/m" (12th layer) Yellow coupler (YA-1) ...0.3g
/m” high boiling point solvent (Oi 1-3) −0
,1g/m"gelatin...
1.8g/Hatake 2 On the other hand, the yellow coupler of sample-31 (
Samples-33~
No. 36 was produced.

Table 5 Samples 31 to 36 were evaluated for characteristics, sharpness, and low replenishment system by wedge exposure in the same manner as in Example 1. The results are shown in Table-6.

It can be seen that the low silver content photosensitive material containing the yellow coupler of the present invention not only has a high maximum density and excellent sharpness, but also provides stable performance even in low replenishment system development processing. .

Sample No. 39 had the same effect of the present invention as sample No. 35, but
Sample-37 had large performance fluctuations in low replenishment systems, and sample-40 had insufficient maximum concentration.

Example 4 Samples 37 to 40 were prepared by changing only the coating silver amount of each photosensitive layer of Sample 35 of Example 3 as shown in Table 7, and the same evaluation as Sample 1 was conducted. Sample-38, [Effects of the Invention] The silver halide color photographic material of the present invention has excellent sharpness despite a significant reduction in the amount of coated silver, and can be used even in a low replenishment system for development processing. This is a quick way to get stable performance.

Significantly reducing the amount of coated silver saves resources, and supporting a low replenishment system contributes to pollution prevention.

Claims (1)

[Claims] The total coating amount of silver is 15 to 45 mg/dm^2, and the support has at least one red photosensitive layer, one green photosensitive layer, and one blue photosensitive layer, and at least one of the red photosensitive layers is a cyan layer for masking. a coupler, at least one of the green photosensitive layers contains a masking magenta coupler;
and at least one of the blue photosensitive layers has a unit molecular weight of 4.
A silver halide color photographic material containing a hydrophilic 2-equivalent yellow coupler having a molecular weight of 00 to 700.