JPH06167782A - Silver halide color photographic sensitive material - Google Patents

Abstract

PURPOSE:To provide a silver halide color photographic sensitive material good in color development performance and high in sensitivity. CONSTITUTION:The silver halide color photographic sensitive material has photographic constituent layers including blue-, green-, and red-sensitive silver halide emulsion layers on a support, and at least one of the red-sensitive silver halide emulsion layers contains at least one of couplers represented by formula I and at least one of nonphotosensitive compounds represented by formula II. In formulae I and II, R<1> is alkyl, alkenyl, alkynyl, cycloalkyl, or aryl; R<2> is a group substitutable on the benzene ring; R<3> is aryl; X is a simple bond, O, S, sulfinyl, sulfonyl, oxycarbonyl, oxysulfonyl, sulfoamido, or alkylamino; Z is H or a group releasable by coupling; l is an integer of 0-4; R11 is alkyl, alkenyl, or aryl; and each of R12 and R13 is H, alkyl, alkenyl, or aryl.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention 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 (hereinafter also simply referred to as a light-sensitive material) which has good color forming property and high sensitivity. It is a thing.

[0002]

2. Description of the Related Art Silver halide color photographic light-sensitive materials include
Usually, a yellow coupler, a cyan coupler and a magenta coupler are used in combination. Of these, naphthol-based cyan couplers have been widely used for color negative films as cyan couplers. However, the dye image obtained from the naphthol-based cyan coupler tends to be discolored by being reduced by divalent iron ions accumulated in a tired bleaching bath or bleach-fixing bath. As a cyan coupler which solves this problem, U.S. Pat. No. 4,333,999 discloses a phenolic cyan coupler having a p-cyanophenylureido group at the 2-position and a carbonamide group as a ballast group (diffusion resistance imparting group) at the 5-position. It has been disclosed and has been widely used as a coupler to replace the above naphthol cyan coupler.

On the other hand, European Patent Nos. 271,323 and 271,324,
No. 271,325 and Japanese Patent Application Laid-Open No. 3-288849 have filed an application defining the 5th position of a phenol coupler having a p-cyanoureido group at the 2nd position, but the coloring property is not sufficient yet and its improvement is strongly desired. Was there.

Further, in recent years, further rapid processing has been demanded, and there has been a demand for the development of cyan couplers and oils which do not deteriorate the color developability even when the amount of oil is reduced.

[0005]

SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide a silver halide color photographic light-sensitive material having good color forming property and high sensitivity.

[0006]

The objects of the present invention are achieved by the following silver halide color photographic light-sensitive materials. In a silver halide color photographic light-sensitive material having a photographic constituent layer comprising a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer on a support, said red-sensitive silver halide emulsion At least one of the layers,
Contain at least one coupler represented by the general formula [C-1] "Chemical formula 1" and at least one non-color-forming compound represented by the general formula [A-1] "Chemical formula 2". A silver halide color photographic light-sensitive material characterized by:

The present invention will be described in detail below.

First, the coupler represented by the general formula [C-1] will be described in detail.

In the general formula [C-1], R ¹ is preferably a linear or branched alkyl group having 1 to 36 (more preferably 6 to 24) total carbon atoms (hereinafter referred to as C number). Base,
A linear or branched alkenyl group having a C number of 2 to 36 (more preferably 6 to 24), a C number of 2 to 36 (more preferably 6)
To 24) linear or branched alkynyl group, C3 to C36 (more preferably 6 to 24) cycloalkyl group having 3 to 12 members, or C6 to 36 (more preferably 6 to 24). ), These are substituents (for example, halogen atom, hydroxyl group, carboxyl group, sulfo group, cyano group, nitro group, amino group, alkyl group, alkenyl group, alkynyl group, cycloalkyl group, aryl group, Alkoxy group, aryloxy group, alkylthio group, arylthio group, alkylsulfonyl group, arylsulfonyl group, acyl group, acyloxy group, alkoxycarbonyl group, aryloxycarbonyl group, carbonamide group, sulfonamide group, carbamoyl group, sulfamoyl group, Ureido group, alkoxycarbonylamino group, sulfamoylamino group, Kokishisuruhoniru group, an imido group or a heterocyclic group, optionally substituted with) that more substituent group A. R ¹ is preferably linear, branched or a substituent (alkoxy group, alkylthio group, aryloxy group, arylthio group, alkylsulfonyl group,
Arylsulfonyl group, aryl group, alkoxycarbonyl group, epoxy group, cyano group or a halogen atom) having an alkyl group (for example, n-octyl, n-decyl, n-dodecyl, n-hexadecyl, 2-ethylhexyl, 3,5, 5-trimethylhexyl, 3,5,5-trimethylhexyl, 2-ethyl-4-methylpentyl, 2-decyl, 2-hexyldecyl, 2
-Heptylundecyl, 2-octyldodecyl, 2,4,6-trimethylheptyl, 2,4,6,8-tetramethylnonyl, benzyl, 2-phenethyl, 3- (t-octylphenoxy) propyl, 3- ( 2,4-di-t-pentylphenoxy) propyl, 2- (4-
Biphenylyloxy) ethyl, 3-dodecyloxypropyl, 2-dodecylthioethyl, 9,10-epoxyoctadecyl, dodecyloxycarbonylmethyl, 2- (2-naphthyloxy) ethyl, unsubstituted or substituted (e.g. halogen atom, Aryl group, alkoxy group, alkylthio group,
An alkenyl group having an aryloxy group, an arylthio group, or an alkoxycarbonyl group (eg, allyl,
10-undecenyl, oleyl, citronellyl, cinnamyl), an unsubstituted or substituted cycloalkyl group having a substituent (eg halogen atom, alkyl group, alkoxy group or aryloxy group) (eg cyclopentyl, cyclohexyl, 3,5-dimethylcyclohexyl, 4) -t-butylcyclohexyl) or an aryl group having an unsubstituted or substituted group (halogen atom, alkyl group, alkoxy group, alkoxycarbonyl group, aryl group, carbonamido group, alkylthio group or sulfonamide group) (eg, phenyl, 4 -Dodecyloxyphenyl, 4-biphenyl, 4-dodecanesulfonamidophenyl, 4-t-octylphenyl, 3-pentadecylphenyl), and particularly preferably the straight chain, branched chain or substituted alkyl group.

In the general formula [C-1], X is a single bond,
-O -, - S -, - SO -, - SO 2 -, - COO-,
^{-CON (R 4) -, -} SO 2 O -, - SO 2 N (R 4) - or -N (R ⁵⁾ - represents a. Here, R ⁴ is a hydrogen atom, and the C number is 1 to
36 (preferably 2 to 24) acyl group (for example, acetamide, butanamide, benzamide, dodecane amide, methylsulfonyl, p-tolylsulfonyl, dodecylsulfonyl, 4-methoxyphenylsulfonyl) or a group having the same meaning as R ¹ , Preferred is a hydrogen atom, a linear, branched or substituted alkyl group or a substituted or unsubstituted aryl group. R ⁵ is a hydrogen atom or a group having the same meaning as R ^1, and is preferably a hydrogen atom or a linear, branched or substituted alkyl group. -COO at X
^{-, - CON (R 4)} -, - SO 2 O- and -SO ₂ N (R ⁴⁾
-May be bonded to R ¹ by any bond. X is preferably -O -, - S -, - SO 2 - or -COO-
(O is bonded to R ¹ ), and particularly preferably —O—
Alternatively, it is —COO— (which binds to R ¹ at O).

In the general formula [C-1], R ² is a group capable of substituting on the benzene ring, preferably the above-mentioned substituent group A.
R 1 is a group selected from the above, and when 1 is plural, R ² may be the same or different. R ² is more preferably a halogen atom (F, Cl, Br, I), an alkyl group having a C number of 1 to 24 (eg methyl, butyl, t-butyl, t-octyl, 2-dodecyl), a C number of 3 to 24. A cycloalkyl group (for example, cyclopentyl, cyclohexyl), a C number of 1 to
24 alkoxy groups (eg methoxy, butoxy, dodecyloxy, benzyloxy, 2-ethylhexyloxy,
3-dodecyloxypropoxy, 2-dodecylthioethoxy, dodecyloxycarbonylmethoxy), C number 2-24
Is a carboxamide group (for example, acetamide, 2-ethylhexanamide, trifluoroacetamide) or a sulfonamide group having 1 to 24 C (for example, methanesulfonamide, dodecanesulfonamide, toluenesulfonamide).

In the general formula [C-1], l is preferably an integer of 0 to 2, more preferably 0 or 1.

In the general formula [C-1], R ³ is preferably an aryl group having a C number of 6 to 36, more preferably 6 to 15, and may be substituted with a substituent selected from the above substituent group A. It may be a condensed ring. Here, as a preferable substituent, a halogen atom (F, Cl, Br, I), a cyano group,
Nitro group, acyl group (eg acetyl, benzoyl),
Alkyl group (methyl, t-butyl, trifluoromethyl,
Trichloromethyl), alkoxy groups (eg methoxy,
Ethoxy, butoxy, trifluoromethoxy), alkylsulfonyl groups (eg methylsulfonyl, propylsulfonyl, butylsulfonyl, benzylsulfonyl),
Arylsulfonyl groups (eg phenylsulfonyl, p-
Tolylsulfonyl, p-chlorophenylsulfonyl), alkoxycarbonyl group (eg methoxycarbonyl, butoxycarbonyl), sulfonamide group (eg methanesulfonamide, trifluoromethanesulfonamide,
Toluenesulfonamide), carbamoyl group (eg N,
N-dimethylcarbamoyl, N-phenylcarbamoyl) or sulfamoyl groups (eg N, N-diethylsulfamoyl, N-phenylsulfamoyl). R ³
Is preferably a phenyl group having at least one substituent selected from a halogen atom, a cyano group, a sulfonamide group, an alkylsulfonyl group, an arylsulfonyl group, and a trifluoromethyl group, and more preferably
4-cyanophenyl, 4-cyano-3-halogenophenyl, 3-
Cyano-4-halogenophenyl, 4-alkylsulfonylphenyl, 4-alkylsulfonyl-3-halogenophenyl, 4
-Alkylsulfonyl-3-alkoxyphenyl, 3-alkoxy-4-alkylsulfonylphenyl, 3,4-dihalogenophenyl, 4-halogenophenyl, 3,4,5-trihalogenophenyl, 3,4-dicyanophenyl, 3 -Cyano-4,5-dihalogenophenyl, 4-trifluoromethylphenyl or 3-sulfonamidophenyl, particularly preferably 4-
It is cyanophenyl, 3-cyano-4-halogenophenyl, 4-cyano-3-halogenophenyl, 3,4-dicyanophenyl or 4-alkylsulfonylphenyl.

In the general formula [C-1], Z represents a hydrogen atom or a coupling-off group (including a leaving atom; the same applies hereinafter). As a preferred example of the coupling-off group,
Halogen ^{atoms, -OR 6, -SR 6, -OC} (O) R 6, -
_{^{OSO 2 R 6, -NHCOR 6,}} -NHC (O) SR 6, -O
C (O) OR ⁶ , —OC (O) NHR ⁶ , an arylazo group having a C number of 6 to 30, a C number of 1 to 30 and a complex bonded to a coupling active position (position to which Z is bonded) at a nitrogen atom. Examples thereof include a cyclic group (eg, succinimide, phthalimide, hydantoinyl, pyrazolyl, 2-benzotriazolyl).
Here, R ⁶ is an alkyl group having a C number of 1 to 36, an alkenyl group having a C number of 2 to 36, a cycloalkyl group having a C number of 3 to 36, a C number of 6 to
It represents a 36 aryl group or a heterocyclic group having a C number of 2 to 36, and these groups may be substituted with a substituent selected from the group A. Z is more preferably a hydrogen atom, a halogen atom, an alkoxy group, an aryloxy group or an alkylthio group, and particularly preferably a hydrogen atom, a chlorine atom, a group represented by the following general formula [C-2] or the following general formula [C-2]. C-
3] is a group represented by

[0015]

[Chemical 3]

(In the formula, R ⁷ is a halogen atom, a cyano group,
A nitro group, an alkyl group, an alkoxy group, an alkylthio group, an alkylsulfonyl group, an arylsulfonyl group, a carbonamido group, a sulfonamide group, an alkoxycarbonyl group, a carbamoyl group, a sulfamoyl group or a carboxyl group, and m is an integer of 0 to 5 Represent When m is plural, R ⁷ may be the same or different. )

[0017]

[Chemical 4]

(In the formula, R ⁸ and R ⁹ are each a hydrogen atom or a monovalent group, and Y is —CO—, —SO—, —SO ₂ —
Or —P (O) R ¹¹ —, R ¹⁰ and R ¹¹ are a hydroxyl group, an alkyl group, an aryl group, an alkoxy group,
The alkenyloxy group, the aryloxy group or the amino group which may be substituted, n represents the integer of 1-6. Here, when n is plural,

[0019]

[Chemical 5]

The values may be the same or different. In the general formula [C-2], R ⁷ is preferably a halogen atom, an alkyl group (for example, methyl, t-butyl, t-octyl, pentadecyl), an alkoxy group (for example, methoxy,
n-butoxy, n-octyloxy, benzyloxy, methoxyethoxy), carbonamide group (eg acetamide, 3-carboxypropanamide) or sulfonamide group (eg methanesulfonamide, toluenesulfonamide, p-dodecyloxybenzenesulfonamide) ), And particularly preferably an alkyl group or an alkoxy group. m is preferably an integer of 0 to 2, more preferably 0.
Alternatively, it is an integer of 1.

In the general formula [C-3], when R ⁸ and / or R ⁹ represents a monovalent group, it is preferably an alkyl group (eg methyl, ethyl, n-butyl, ethoxycarbonylmethyl, benzyl, n-). Decyl, n-dodecyl), aryl groups (eg phenyl, 4-chlorophenyl, 4-methoxyphenyl), acyl groups (eg acetyl, decanoyl,
Benzoyl, bivaloyl) or a carbamoyl group (eg N-ethylcarbamoyl, N-phenylcarbamoyl), and R ⁶ and R ⁷ are more preferably hydrogen atoms, alkyl groups or aryl groups. The Y in the general formula [C-3] preferably -CO- or -SO ₂ - is, still more preferably -CO-. In formula [C-3], R ¹⁰ is preferably an alkyl group, an alkoxy group, an alkenyloxy group, an aryloxy group or an optionally substituted amino group, and more preferably an alkoxy group or an optionally substituted group. It is an amino group.

In the general formula [C-3], n is preferably an integer of 1 to 3, more preferably 1.

Specific examples of the coupler used in the present invention are shown below, but the present invention is not limited thereto.

[0024]

[Chemical 6]

[0025]

[Chemical 7]

[0026]

[Chemical 8]

[0027]

[Chemical 9]

The coupler according to the present invention is disclosed in JP-A-3-288849.
No. 11-12 pages, it can synthesize.

The cyan coupler of the present invention can be used in combination of two or more kinds, and can also be used in combination with another kind of cyan coupler.

The cyan coupler according to the present invention is used in a red-sensitive silver halide emulsion layer, and the addition amount thereof is from 2 × 10 ^-3 to 8 × 10 ^-1 mol, and preferably 1 per mol of silver halide.
It is in the range of × 10 ^-2 mol to 5 × 10 ^-1 mol.

The non-color forming compound represented by the general formula [A-1] according to the present invention will be described.

The alkyl group represented by R ₁₁ , R ₁₂ and R ₁₃ preferably has 1 to 32 carbon atoms and may be linear or branched.

The alkenyl group represented by R ₁₁ , R ₁₂ and R ₁₃ preferably has 1 to 32 carbon atoms and may be linear or branched.

The aryl group represented by R ₁₁ , R ₁₂ and R ₁₃ is preferably a phenyl group. The groups represented by R ₁₁ , R ₁₂ and R ₁₃ may further have a substituent, and examples of the substituent include alkyl, aryl, acylamino, sulfonamide, alkylthio, arylthio, halogen atom, cycloalkenyl and alkynyl. , Heterocycle,
Sulfonyl, sulfinyl, phosphonyl, acyl, carbamoyl, sulfamoyl, cyano, alkoxy, aryloxy, heterocycleoxy, siloxy, acyloxy,
Examples include groups such as carbamoyloxy, amino, alkylamino, imide, ureido, sulfamoylamino, alkoxycarbonylamino, aryloxycarbonylamino, alkoxycarbonyl, and aryloxycarbonyl.

The total number of carbon atoms of R ₁₁ , R ₁₂ and R ₁₃ is 10
It is above, and preferably 12 to 36.

Typical examples of the non-color forming compound according to the present invention are shown below, but the present invention is not limited to these compounds.

[0037]

[Chemical 10]

[0038]

[Chemical 11]

In the present invention, the cyan coupler represented by the above general formula [C-1] (hereinafter, cyan coupler C-1
Say. ) And a non-color-forming compound represented by the general formula [A-1] (hereinafter referred to as compound A-1) are contained in at least one of the red-sensitive silver halide emulsion layers.

Cyan coupler C-1 and compound A-1
In order to incorporate the above in the silver halide emulsion layer, a conventionally known method, for example, a known high-boiling solvent such as dibutyl phthalate, tricresyl phosphate and butyl acetate,
Cyan coupler C-1 and compound A can be added to a mixture of low boiling point solvents such as ethyl acetate or a solvent containing only low boiling point solvents.
-1 each alone or in combination and dissolved, and then mixed with an aqueous gelatin solution containing a surfactant, and then emulsion-dispersed using a high-speed rotary mixer, colloid mill or ultrasonic disperser, and then emulsion A method of directly adding it can be adopted. Further, after setting the above emulsified dispersion liquid, it may be shredded, washed with water, and then added to the emulsion.

In the present invention, the cyan coupler C-1 according to the present invention and the compound A-1 may be separately dispersed by the above dispersion method and added to the silver halide emulsion, but both compounds are simultaneously added. A method of dissolving, dispersing and adding to the emulsion is preferable.

The addition amount of the compound A-1 is preferably 0. 1 g based on 1 g of the cyan coupler C-1 according to the present invention.
It is in the range of 01 g to 10 g, more preferably 0.1 g to 3.0 g. The compound A-1 according to the present invention may be used alone or in combination of two or more kinds.

The silver halide color photographic light-sensitive material of the present invention can be applied to, for example, color negative and positive films, color photographic paper and the like.

The silver halide color photographic light-sensitive material of the present invention is used as a photographic coupler in order to perform color reduction method color reproduction.
The cyan coupler according to the present invention, the red-sensitive, blue-sensitive and green-sensitive silver halide emulsion layers and the non-photosensitive layer containing the known yellow coupler and magenta coupler, respectively, are formed on the support in an appropriate number and layer order. Although it has a laminated structure, the number of layers and the layer order may be appropriately changed depending on the priority performance and the purpose of use.

Examples of the yellow coupler which can be used in the light-sensitive material of the present invention include benzoylacetanilide type compounds and pivaloylacetanilide type compounds, and the cyan couplers which can be used in combination with the cyan coupler of the present invention include phenol type compounds. And naphthol compounds.

The magenta couplers usable in the light-sensitive material of the present invention include pyrazoloazole compounds such as pyrazolopyrazoles, pyrazoloimidazoles, pyrazolotriazoles and pyrazolotetrazole compounds. , Pyrazolone compounds, pyrazolobenzimidazole compounds and open-chain acylacetonitrile compounds.

The silver halide emulsion used in the silver halide color photographic light-sensitive material of the present invention (hereinafter referred to as the silver halide emulsion of the present invention) includes silver bromide, silver iodobromide, and iodobromide. Any of those used for ordinary silver halide emulsions such as silver chloride, silver chlorobromide and silver chloride can be used.

The silver halide emulsion used in the present invention is
Chemical sensitization can be performed by a sulfur sensitizing method, a selenium sensitizing method, a reduction sensitizing method, a noble metal sensitizing method, or the like.

The silver halide emulsion used in the present invention is
It is optically sensitized to a desired wavelength region using a dye known as a sensitizing dye in the photographic industry.

The silver halide color photographic light-sensitive material of the present invention contains a color antifoggant, a hardener, a plasticizer, a polymer latex, an ultraviolet absorber, a formalin scavenger, a mordant, a development accelerator, a development retarder, and a fluorescence enhancer. A whitening agent, a matting agent, a slip agent, an antistatic agent, a surfactant, etc. can be optionally used.

In the present invention, any treatment used in the art can be carried out, for example, color developing treatment, bleaching, fixing or bleach-fixing, stabilization, washing, stopping and the like.

[0052]

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

In all the following examples, the addition amount in the silver halide photographic light-sensitive material is the number of grams per 1 m ² unless otherwise specified. Also, silver halide and colloidal silver are shown in terms of silver.

Example 1 A multi-layer color photographic light-sensitive material (Sample 1) was prepared by sequentially forming each layer having the composition shown below from the support side on a triacetyl cellulose film support.

First layer: antihalation layer (HC-1) Black colloidal silver 0.20 UV absorber (UV-1) 0.20 Colored coupler (CC-1) 0.05 Colored coupler (CM-1) 0.05 High boiling point solvent (Oil-) 1) 0.20 gelatin 1.5 second layer; intermediate layer (IL-1) UV absorber (UV-1) 0.01 high boiling solvent (Oil-1) 0.01 gelatin 1.5 third layer; low sensitivity red-sensitive emulsion layer (RL) iodine Silver bromide emulsion (Em-1) 0.8 Silver iodobromide emulsion (Em-2) 0.8 Sensitizing dye (SD-1) 2.5 × 10 ^-4 (mol / silver 1 mol) Sensitizing dye (SD-2) 2.5 × 10 ^-4 (mol / silver 1 mol) Sensitizing dye (SD-3) 0.5 × 10 ^-4 (mol / silver 1 mol) Cyan coupler (C-1) 1.0 Colored cyan coupler (CC-1) 0.05 DIR compound (D-1) 0.002 High boiling point solvent (Oil-1) 0.5 Gelatin 1.5 4th layer; High sensitivity red Sensitive emulsion layer (RH) Silver iodobromide emulsion (Em-3) 2.0 Sensitizing dye (SD-1) 2.0 × 10 ⁻⁴ (mol / silver 1 mol) Sensitizing dye (SD-2) 2.0 × 10 ⁻⁴ (Mol / silver 1 mol) Sensitizing dye (SD-3) 0.1 × 10 ⁻⁴ (mol / silver 1 mol) Cyan coupler (C-1) 0.25 Cyan coupler (C-2) 0.05 Colored cyan coupler (CC-1) ) 0.015 DIR compound (D-1) 0.05 High boiling point solvent (Oil-1) 0.2 Gelatin 1.5 Fifth layer; Intermediate layer (IL-2) Gelatin 0.5 Sixth layer; Low sensitivity green sensitive emulsion layer (GL) Iodobromide Silver emulsion (Em-1) 1.3 Sensitizing dye (SD-4) 5 × 10 ^-4 (mol / silver 1 mol) Sensitizing dye (SD-5) 1 × 10 ^-4 (mol / silver 1 mol) Magenta coupler (M-1) 0.25 Magenta Coupler (M-2) 0.25 Colored Magenta Coupler (CM-1) 0.01 DIR Compound (D-3) 0.02 D IR compound (D-4) 0.020 High boiling point solvent (Oil-2) 0.3 Gelatin 1.0 Seventh layer; High sensitivity green sensitive emulsion layer (GH) Silver iodobromide emulsion (Em-3) 1.3 Sensitizing dye (SD-6) ) 1.5 × 10 ^-4 (mol / silver 1 mol) Sensitizing dye (SD-7) 2.5 × 10 ^-4 (mol / silver 1 mol) Sensitizing dye (SD-8) 0.5 × 10 ^-4 (mol / silver) 1 mol) Magenta coupler (M-1) 0.05 Magenta coupler (M-2) 0.10 Colored magenta coupler (CM-2) 0.05 DIR compound (D-3) 0.01 High boiling solvent (Oil-2) 0.2 Gelatin 1.0 Eighth layer Yellow filter layer (YC) Yellow colloidal silver 0.1 Color stain inhibitor (SC-1) 0.1 High boiling point solvent (Oil-3) 0.1 Gelatin 0.8 9th layer; Low sensitivity blue sensitive emulsion layer (BL) Silver iodobromide emulsion (Em-1) 0.25 Silver iodobromide emulsion (Em-2) 0.25 Sensitizing dye (SD-10) 7 × 10 ^{− 4} (mol / silver 1 mol) Yellow coupler (Y-1) 0.5 Yellow coupler (Y-2) 0.1 DIR compound (D-2) 0.01 High boiling solvent (Oil-2) 0.3 Gelatin 1.0 10th layer; High sensitivity blue Sensitive emulsion layer (BH) Silver iodobromide emulsion (Em-4) 0.4 Silver iodobromide emulsion (Em-1) 0.4 Sensitizing dye (SD-9) 1 × 10 ⁻⁴ (mol / silver 1 mol) Sensitization Dye (SD-10) 3 × 10 ^-4 (mol / silver 1 mol) Yellow coupler (Y-1) 0.30 Yellow coupler (Y-2) 0.05 High boiling point solvent (Oil-2) 0.15 Gelatin 1.1 11th layer; 1 Protective layer (PRO-1) Fine grain silver iodobromide emulsion (average particle size 0.08 μm, AgI content 2 mol%) 0.4 UV absorber (UV-1) 0.10 UV absorber (UV-2) 0.05 High boiling point solvent (Oil-1) 0.1 High boiling point solvent (Oil-3) 0.1 Formalin scavenger (HS-1) 0. 5 Formalin scavenger (HS-2) 0.2 Gelatin 1.0 12th layer; 2nd protective layer (PRO-2) Surfactant (Su-1) 0.005 Alkali-soluble matting agent (average particle size 2 μm) 0.05 Polymethylmethacrylate ( Average particle size 3 μm) 0.05 Sliding agent (WAX-1) 0.04 Gelatin 0.6 In addition to the above composition, each layer contains a coating aid Su-2, a dispersion aid Su-3, a hardener H-1 and H-2. , Stabilizer ST-
1, antifoggants AF-1 and AF-2 were added.

Em-1 Average grain size 0.46 μm Average silver iodide content: 7.0 mol%, monodisperse (width of distribution 14%) surface low silver iodide (2 mol%) containing core / shell type emulsion Em-2 Average grain size 0.30 μm Average silver iodide content: 2.0 mol%, monodisperse (14% distribution) surface silver bromide-containing core / shell emulsion Em-3 Average grain size 0.81 μm Average Silver iodide content: 7.0 mol%, monodisperse (width of distribution: 14%) surface low silver iodide (1.
0 mol%)-containing core / shell type emulsion Em-4 average grain size 0.95 μm average silver iodide content: 8.0 mol%, monodisperse (width of distribution: 14%) surface low silver iodide (0.
5 mol%)-containing core / shell type emulsion Distribution breadth = (standard deviation value / average particle size) × 100.

The structural formulas of the compositions used in the above samples are shown below.

[0058]

[Chemical 12]

[0059]

[Chemical 13]

[0060]

[Chemical 14]

[0061]

[Chemical 15]

[0062]

[Chemical 16]

[0063]

[Chemical 17]

[0064]

[Chemical 18]

[0065]

[Chemical 19]

[0066]

[Chemical 20]

Next, in the sample 1, cyan coupler C to be added to the third and fourth silver halide emulsion layers.
Samples 2 to 12 were prepared by adding an equimolar cyan coupler instead of -1 as shown in Table 1 and replacing Oil-1 with the non-color-forming compound shown in Table 1.

Each sample No. 1 to 12 produced in this way
After exposing the wedge with white light for 1/100 second,
The following development processing (A) was performed.

Processing step (38 ° C.) Color development 3 minutes 15 seconds Bleach 6 minutes 30 seconds Water washing 3 minutes 15 seconds Settling 6 minutes 30 seconds Water washing 3 minutes 15 seconds Stabilization 1 minute 30 seconds Drying Each processing step The composition of the treatment liquid used in 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 Potassium bromide 1.3 g Nitrilotriacetic acid trisodium salt (monohydrate) 2.5 g Potassium hydroxide 1.0 g Add water to make 1 liter. (PH = 10.2) <Bleaching solution> Ethylenediaminetetraacetic acid iron (III) ammonium salt 100g Ethylenediaminetetraacetic acid diammonium salt 10.0g Ammonium bromide 150.0g Glacial acetic acid 10ml Add water to make 1 liter, and use pH with ammonia water = Adjust to 6.0.

<Fixer> Ammonium thiosulfate 175.0 g Anhydrous sodium sulfite 8.5 g Sodium metasulfite 2.3 g Water is added to make 1 liter, and pH is adjusted to 6.0 using acetic acid.

<Stabilizer> Formalin (37% aqueous solution) 1.5 ml Conidax (Konica Corporation) 7.5 ml Add water to make 1 liter.

The samples 1 to 12 thus obtained were processed according to the color development processing step described above, and the resulting dye image was subjected to a sensitivity measurement of the red-sensitive emulsion layer using an optical densitometer (PDA-65 type manufactured by Konica Corporation). The reciprocal of the exposure required to give a minimum density of +0.1) was measured. The sensitivity is shown as a relative value when the sensitivity of Sample No. 1 is 100.

The results are shown in Table 1.

[0075]

[Table 1]

As is clear from Table 1, Sample No. 5 using the cyan coupler of the present invention and the non-color forming compound of the present invention
It can be seen that Nos. 12 to 12 have higher sensitivity and excellent color development than those of Comparative Samples Nos. 1 to 4.

Example 2 Sample 13 was prepared by replacing the cyan coupler C-1 of the third and fourth layers of the sample 1 of Example 1 with an equimolar amount of the cyan coupler C-3 shown below. Similarly, the cyan coupler and the non-color forming compound were replaced as shown in Table 2 to obtain a sample.
Created 14-24. However, the amount of the non-color forming compound in each of Samples 14 to 24 was set to 1/2 of that in Sample 13.

The obtained sample was treated in the same manner as in Example 1. The sensitivity is shown as a relative value when the sensitivity of Sample No. 13 is 100.

The results are shown in Table 2.

[0080]

[Table 2]

[0081]

[Chemical 21]

As is clear from Table 2, the samples using the cyan coupler of the present invention and the non-color-forming compound other than the present invention are:
When the amount of the non-color forming compound added was reduced to 1/2, the sensitivity was significantly lowered. (Comparative Samples 13 and 14) Further, the cyan coupler of the present invention and the non-color-forming compound of the present invention (Comparative Sample 15),
The cyan coupler of the present invention and the non-color-forming compound other than the present invention (Comparative Sample 16) alleviate the reduction in sensitivity to some extent but are insufficient.

On the other hand, it can be seen that Sample Nos. 17 to 24 of the present invention have high sensitivity and excellent color developability even when the amount of the non-color forming compound added is reduced.

[0084]

By using the cyan coupler of the present invention and the non-color forming compound of the present invention, a silver halide color photographic light-sensitive material having high sensitivity and excellent color forming property can be obtained.

Claims (1)

[Claims] 1. A silver halide color photographic light-sensitive material having a photographic constituent layer comprising a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer on a support. At least one type of coupler represented by the following general formula [C-1] and at least one type of non-color-forming compound represented by the following general formula [A-1] in at least one layer of the red-sensitive silver halide emulsion layer. A silver halide color photographic light-sensitive material comprising: [Chemical 1] [In the formula, R ¹ represents an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, or an aryl group, and X represents a single bond, —O—, —S—, —SO—, —SO ₂ —, —COO.
^{-, - CON (R 4)} -, - SO 2 O -, - SO 2 N (R 4) -
Alternatively, —N (R ⁵ ) —, R ₂ is a substitutable group on the benzene ring, 1 is an integer of 0 to 4, R ³ is an aryl group, Z is a hydrogen atom or a coupling-off group, Represent each. ] [Chemical 2] [In the formula, R ₁₁ represents an alkyl group, an alkenyl group or an aryl group, and R ₁₂ and R ₁₃ represent a hydrogen atom, an alkyl group, an alkenyl group or an aryl group, respectively. However, the total number of carbon atoms of R ₁₁ , R ₁₂ and R ₁₃ is 10 or more. ]