JPH0820714B2 - Silver halide color photographic light-sensitive material with improved processing stability - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a silver halide photographic material.

[Prior art]

Of the couplers forming a magenta dye image, the pyrazoloazole type has attracted attention in recent years because the coloring dye has excellent spectral characteristics and improves the color reproducibility of a silver halide color photographic light-sensitive material.

However, this pyrazoloazole coupler is
It has the drawback that it acts on photosensitive silver halide to desensitize it or generate fog, and its photographic characteristics are large against slight changes in the development process of silver halide color photographic light-sensitive materials. The width will fluctuate and the stability will be impaired.

On the other hand, JP-A-62-24254 proposes an improvement by lowering the film surface pH of a silver halide color photographic light-sensitive material. However, if the film surface pH is lowered, the dispersion stability of the silver halide grains and the coupler particles is lowered to cause coating failure, or the hardening reaction is lowered to cause variations in the physical properties of the coating, which is not preferable.

[Object of the Invention]

An object of the present invention is to provide a silver halide color photographic light-sensitive material which has excellent color reproducibility, has little variation in photographic characteristics due to variations in development processing, and has improved physical properties.

[Structure of Invention]

The object of the present invention is to provide a magenta coupler represented by the following general formula [MI], an average particle diameter of 0.2 to 0.6 μm, and an average value of particle diameter / thickness of 8 or more and 20 or less. A silver halide color photographic light-sensitive material having at least one emulsion layer containing monodisperse tabular silver iodobromide grains having a silver halide grain content of 20% or more in an amount of 50% by weight or more. It was

General formula [MI] In the formula, Z represents a nonmetallic atom group necessary for forming a nitrogen-containing heterocycle, and the ring formed by the Z may have a substituent.

X represents a hydrogen atom or a group capable of leaving by reaction with an oxidized form of a color developing agent.

R represents a hydrogen atom or a substituent.

The general formula [MI] according to the present invention [M-I] In the magenta coupler represented by, Z represents a nonmetallic atom group necessary for forming a nitrogen-containing heterocycle, and the ring formed by Z may have a substituent.

X represents a hydrogen atom or a group capable of leaving by reaction with an oxidized form of a color developing agent.

 R represents a hydrogen atom or a substituent.

The substituent represented by R is not particularly limited, but typical examples thereof include alkyl, aryl, anilino, acylamino, sulfonamide, alkylthio, arylthio, alkenyl, and cycloalkyl groups. Atoms and cycloalkenyl, alkynyl, heterocycle, sulfonyl, sulfinyl, phosphonyl, acyl,
Carbamoyl, sulfamoyl, cyano, alkoxy,
Aryloxy, heterocyclic oxy, siloxy, acyloxy, carbamoyloxy, amino, alkylamino, imide, ureido, sulfamoylamino, alkoxycarbonylamino, aryloxycarbonylamino, alkoxycarbonyl, aryloxycarbonyl, heterocyclic thio groups , And spiro compound residues, bridged hydrocarbon compound residues and the like.

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

The aryl group represented by R is preferably a phenyl group.

Examples of the acylamino group represented by R include an alkylcarbonylamino group and an arylcarbonylamino group.

Examples of the sulfonamide group represented by R include an alkylsulfonylamino group and an arylsulfonylamino group.

The alkyl component and the aryl component in the alkylthio group and the arylthio group represented by R include the alkyl group and the aryl group represented by R.

The alkenyl group represented by R has 2 to 32 carbon atoms, and the cycloalkyl group has 3 to 12 carbon atoms, especially 5
The alkenyl group may be linear or branched.

The cycloalkenyl group represented by R has 3 carbon atoms.
-12, especially 5-7 are preferred.

The sulfonyl group represented by R is an alkylsulfonyl group, an arylsulfonyl group, etc .; The sulfinyl group is an alkylsulfinyl group, an arylsulfinyl group, etc .; The phosphonyl group is an alkylphosphonyl group, an alkoxyphosphonyl group, an aryloxyphosphonyl group. , An arylphosphonyl group, etc .; an acyl group, an alkylcarbonyl group, an arylcarbonyl group, etc .; a carbamoyl group, an alkylcarbamoyl group, an arylcarbamoyl group, etc .; a sulfamoyl group, an alkylsulfamoyl group, an arylsulfamoyl group, etc .; As the acyloxy group, an alkylcarbonyloxy group, an arylcarbonyloxy group, etc .; As the carbamoyloxy group, an alkylcarbamoyloxy group, an arylcarbamoyloxy group, etc .; a ureido group Such as alkyl ureido groups and aryl ureido groups; sulfamoylamino groups such as alkylsulfamoylamino groups and arylsulfamoylamino groups; and heterocyclic groups having 5 to 7 members are preferred. Is a 2-furyl group, a 2-thienyl group, a 2-pyrimidinyl group, a 2-benzothiazolyl group or the like; As the heterocyclic oxy group, those having a 5- to 7-membered heterocyclic ring are preferable, and for example, 3,4,5,6 -Tetrahydropyranyl-2-oxy group, 1-phenyltetrazol-5-oxy group, etc .; As the heterocyclic thio group, a 5- to 7-membered heterocyclic thio group is preferable, for example, a 2-pyridylthio group, a 2-benzothiathio group. Zolylthio group, 2,4-diphenoxy-1,3,5-triazole-6-thio group, etc .; siloxy group includes trimethylsiloxy group, triethylsiloxy group, dimethylbutyl Proxy group or the like; succinimide imide group as a group, 3-heptadecyl succinic acid imide group, a phthalimide group, a glutarimide group and the like; spiro [3.3] As a spiro compound residue heptane -
1-yl, etc .; as a bridged hydrocarbon compound residue, bicyclo [2.2.1]
Examples include heptan-1-yl, tricyclo [3.3.1.1 ^3,7 ] decan-1-yl, 7,7-dimethyl-bicyclo [2.2.1] heptan-1-yl, and the like.

Examples of the group represented by X which can be eliminated by the reaction with the oxidized product of the color developing agent include, for example, a halogen atom (chlorine atom, bromine atom, fluorine atom, etc.), alkoxy, aryloxy,
Heterocyclic oxy, acyloxy, sulfonyloxy, alkoxycarbonyloxy, aryloxycarbonyl,
Alkyl oxalyloxy, alkoxy oxalyloxy, alkylthio, arylthio, heterocyclic thio, alkyloxythiocarbonylthio, acylamino, sulfonamide, nitrogen-containing heterocyclic ring bonded by N atom, alkyloxycarbonylamino, aryloxycarbonylamino, carboxyl , (R ₁ ′ has the same meaning as R above, Z ′ has the same meaning as Z above, and R ₂ ′ and R ₃ ′ each represent a hydrogen atom, an aryl group, an alkyl group or a heterocyclic group). And a halogen atom, particularly a chlorine atom is preferable.

The nitrogen-containing heterocyclic ring formed by Z or Z'includes a pyrazole ring, an imidazole ring, a triazole ring, a tetrazole ring, and the like, and the substituent which the ring may have is the same as described above for R. Is mentioned.

What is represented by the general formula [MI] is more specifically represented by, for example, the following general formulas [M-II] to [M-VII].

General formula [M-II] General formula [M-III] General formula [M-IV] General formula [MV] General formula [M-VI] General formula [M-VII] In the general formulas [M-II] to [M-VII], R _{1 to} R ₈
And X have the same meanings as R and X described above.

Among the general formula [M-I], the one represented by the following general formula [M-VIII] is preferable.

General formula [M-VIII] In the formula, R ₁ , X and Z ₁ have the same meanings as R, X and Z in formula [MI].

Among the magenta couplers represented by the above general formulas [M-II] to [M-VII], the most preferable one is the general formula [M-I].
I] is a magenta coupler.

The ring formed by Z in the general formula [M-I] and the substituent which the ring formed by Z ₁ in the general formula [M-VIII] may have, and the general formulas [M-II] to [M-II]. M
As R _{2 to} R ₈ in —VI], those represented by the following general formula [M-IX] are preferable.

The general formula ^{[M-IX] -R 1 -SO} 2 -R 2 Formula wherein R ¹ is an alkylene group, R ² represents an alkyl group, a cycloalkyl group or an aryl group.

The alkylene group represented by R ¹ preferably has a carbon number of the linear portion of 2 or more, more preferably 3 to 6, and may be linear or branched.

The cycloalkyl group represented by R ² is preferably a 5- or 6-membered cycloalkyl group.

When used for positive image formation, the most preferable substituents R and R ₁ on the heterocycle are those represented by the following general formula [M-
X].

General formula [MX] In the formula, R ₉ , R ₁₀ and R ₁₁ have the same meanings as R above.

Two of R ₉ , R ₁₀ and R ₁₁ , for example, R ₉ and R ₁₀ may combine to form a saturated or unsaturated ring (eg, cycloalkane, cycloalkene, heterocycle), In addition to the ring
R ₁₁ may combine to form a bridged hydrocarbon compound residue.

Preferred are among the general formula [M-X], (i ) if at least two of the alkyl groups in the _{R 9 ~R 11, (ii)} 1 one example R ₁₁ in R ₉ to R ₁₁ are hydrogen An atom, when the other two R ₉ and R ₁₀ combine to form a cycloalkyl with the root carbon atom.

Further preferred among (i) is 2 of R _{9 to} R _11.
One is an alkyl group and the other one is a hydrogen atom or an alkyl group.

When used for forming a negative image, the substituents R and R ₁ on the heterocyclic ring are most preferably represented by the following general formula [MX
I].

General formula [M-XI] R ₁₂ —CH ₂ — In the formula, R ₁₂ has the same meaning as the above R.

R ₁₂ is preferably a hydrogen atom or an alkyl group.

 The typical examples of the compounds according to the present invention are shown below.

In addition to the representative examples of the compound according to the present invention, specific examples of the compound according to the present invention include compounds described on pages 66 to 122 of Japanese Patent Application No. 61-9791. And N
o.1 to 4,6,8 to 17,19 to 24,26 to 43,45 to 59,61 to 104,106 to 1
Compounds represented by 21,123 to 162,164 to 223 can be mentioned.

Also, the coupler is the Journal of the Chemical Societ.
y), Perkin I (1977), 2047-2052, U.S. Pat. No. 3,725,067, JP-A-59-99437, JP-A-58-42045,
59-162548, 59-171956, 60-33552, 60-4
The compound can be synthesized with reference to 3659, 60-172982 and 60-190779 and the like.

The coupler of the present invention usually contains 1 × per mol of silver halide.
10 ⁻³ mol to 1 mol, preferably 1 × 10 ⁻² mol to 8 × 10 ⁻¹
It can be used in the molar range.

The coupler of the present invention can also be used in combination with other types of magenta couplers.

The average grain size of tabular silver halide grains according to the present invention is 0.
It is 2 to 0.6 μm, and particularly preferably 0.3 to 0.55 μm.

In the tabular silver halide emulsion of the present invention, the average value of grain diameter / thickness (called aspect ratio) (called average aspect ratio) is 8 or more and 20 or less.

The average thickness of the tabular silver halide emulsion of the present invention is 0.12 μm.
m or less, more preferably 0.10 μm or less, particularly preferably
It is 0.01 to 0.08 μm.

In the present invention, the diameter of a silver halide grain is defined as the diameter of a circle having an area equal to the projected area of the grain from the observation of an electron micrograph of the silver halide grain.

In the present invention, the thickness of silver halide grains is defined as the minimum distance between two parallel planes constituting a tabular silver halide grain.

The thickness of the tabular silver halide grains can be determined from an electron micrograph of a shaded silver halide grain or an electron micrograph of a sample slice obtained by coating and drying a silver halide emulsion on a support.

Measure at least 100 samples to determine the average aspect ratio.

In the tabular silver halide emulsion of the present invention, the proportion of silver halide grains having an aspect ratio of 8 or more and 20 or less in the total silver halide grains is preferably 50% or more, more preferably 60% or more, and particularly preferably Is over 70%.

The tabular silver halide emulsion of the present invention is preferably one which is monodisperse, and one having 50% by weight or more of silver halide grains contained in a grain size range of ± 20% around the average grain size is used. To be

The tabular silver halide emulsion of the present invention may contain silver chloride as long as the effects of the present invention are not impaired.

In the tabular silver halide emulsion of the present invention, the halogen composition may be uniform within the grain or silver iodide may be localized, but the one localized in the central portion is preferably used.

A method for producing a tabular silver halide emulsion is described in JP-A-58-11392.
No. 6, No. 58-113927, No. 58-113934, No. 62-1855, European Patents 219,849, No. 219,850 and the like can be referred to.

Further, JP-A-61-6643 can be referred to as a method for producing a monodisperse tabular silver halide emulsion.

As a method for producing a tabular silver iodobromide emulsion having a high aspect ratio, a silver nitrate aqueous solution or a silver nitrate aqueous solution and a halogen solution are simultaneously added to a gelatin solution having a pBr of 2 or less to generate seed crystals, and then double crystals are generated. It can be obtained by growing by the jet method.

The size of tabular silver halide grains can be controlled by the temperature at the time of grain formation and the speed of addition of silver salt and halide solutions.

The average silver iodide content of the tabular silver halide emulsion can be controlled by changing the composition of the added halide solution, that is, the ratio of bromide to iodide.

Further, a silver halide solvent such as ammonia, thioether or thiourea can be used as needed in the production of tabular silver halide grains.

The silver halide color photographic light-sensitive material according to the present invention is 2
It is preferably a multi-layer structure having at least one emulsion layer on the support.

The layer structure capable of particularly exhibiting the effects of the present invention is a colloidal silver antihalation layer, (intermediate layer), red-sensitive layer, (intermediate layer), green-sensitive layer (intermediate layer), colloidal silver yellow filter layer in order from the support. A blue-sensitive layer, (intermediate layer), one coated with a protective layer, and further a colloidal silver antihalation layer, (intermediate layer), red-sensitive layer, (intermediate layer), green-sensitive layer, (intermediate layer), from the support. Blue sensitive layer, (intermediate layer), red sensitive layer,
(Intermediate layer), green-sensitive layer, (colloidal silver yellow filter layer), blue-sensitive layer, (intermediate layer), protective layer.

The layer in parentheses may be omitted. The red-sensitive layer, green-sensitive layer and blue-sensitive layer may be divided into low-sensitivity and high-sensitivity layers. In addition, a layer structure in which at least one of a red-sensitive layer, a green-sensitive layer and a blue-sensitive layer as shown in JP-B-49-15495 is divided into three partial layers, as disclosed in JP-A-51-49027. Layer structure in which high-sensitivity emulsion layer unit and low-sensitivity emulsion layer unit are separated, and West German publication No. 2,622,922, No. 2,622,923,
The layer structure and the like seen in Nos. 2,622,924, 2,704,826 and 2,704,797 are cited.

Further, JP-A-59-180555, 59-182451 and 61-72235.
Nos. 60-194450 and 61-4043 are also preferably used.

In the silver halide photographic light-sensitive material of the present invention, the tabular silver halide emulsion is preferably used in a layer other than the layer closest to the support, and the effect is greater when the layer is farther from the support.

In the silver halide photographic light-sensitive material of the present invention, the tabular silver halide emulsion is effective if it is applied to either one when the same color-sensitive layers are separated into two or more layers. It is preferable to use the tabular silver halide emulsion of the present invention together with the lower layer.

The silver halide emulsion according to the present invention can be chemically sensitized by a conventional method, and can be optically sensitized to a desired wavelength region by using a sensitizing dye.

An antifoggant, a stabilizer and the like can be added to the silver halide emulsion. It is advantageous to use gelatin as the binder of the emulsion.

The emulsion layer and other hydrophilic colloid layers may be hardened, and may 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 the color photographic light-sensitive material.

Further, a color coupler having a color correcting effect, a competing coupler and a coupling agent with an oxidized product of a developing agent, a development accelerator, a bleaching accelerator, a developer, a silver halide solvent, a toning agent, a hardener, Compounds that release photographically useful fragments such as fog agents, antifoggants, chemical sensitizers, spectral sensitizers, and desensitizers can be used.

The photosensitive material includes a filter layer, an antihalation layer,
An auxiliary layer such as an irradiation prevention layer can be provided. In these layers and / or in the emulsion layers, dyes which are bleached or bleached from the light-sensitive material during the development processing may be contained.

A formalin scavenger, a fluorescent whitening agent, a matting agent, a lubricant, an image stabilizer, a surfactant, an antifoggant, a development accelerator, a development retarder or a bleaching accelerator can be added to the light-sensitive material.

As the support, paper laminated with polyethylene or the like, polyethylene terephthalate film, baryta paper, cellulose triacetate film or the like can be used.

In order to obtain a dye image using the light-sensitive material of the present invention, a commonly known color photographic process can be carried out after exposure.

 Next, examples will be shown.

〔Example〕

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

(Comparative Emulsion) A monodisperse silver iodobromide emulsion Em-I composed of core / shell type octahedral grains having a higher silver iodide content inside the grain than in the grain surface according to the method of JP-A-60-138538. And Em-II
Was prepared. The silver iodide content and grain size are shown in Table 1 below. The weight% of silver halide grains contained in the grain size range of ± 20% around the average grain size d (hereinafter referred to as “monodispersity”) is
Em-I was 88% by weight and Em-II was 85% by weight.

(Comparative emulsion) Tabular silver iodobromide emulsion Em-III (average grain size 0.8 μm, average aspect ratio 10, silver iodide content 12 mol%) according to the method of Emulsion 4 of JP-A-58-113926 and Em-IV (average grain size 1.0 μm, average aspect ratio 13, silver iodobromide content 12
Mol%) was prepared. Monodispersity is 47% by weight for Em-III, Rm
-IV was 46% by weight.

(Emulsion of the present invention) An aqueous solution of silver nitrate and an aqueous solution of potassium bromide were added to a solution containing potassium bromide and ossein gelatin vigorously stirred at 40 ° C for 20 seconds by a double jet method to form seed crystals. It was Next, the temperature was raised to 60 ° C. and a silver nitrate aqueous solution and a mixed aqueous solution of potassium bromide and potassium iodide were grown for 12 minutes by the double jet method.

The emulsion thus obtained was desalted and washed with water by a conventional method. At this time, the emulsion had an average grain size of 0.55 μm, an average aspect ratio of 12, an average thickness of 0.046 μm and an average silver iodide content of 5.0 mol% and a monodispersity degree.
It was a 58% by weight monodisperse emulsion. This emulsion is designated as Em-V.

By the same operation, adjust the temperature and addition rate to obtain an average particle size of 0.31.
Emulsion Em-VI having an average aspect ratio of 13 and an average silver iodide content of 5.0 mol% was obtained. It was a monodisperse emulsion having a monodispersity of 62% by weight.

Em-V except that the first 6 minutes of the 12-minute double jet method in the preparation of Em-V was changed to a single jet
Em-VII having a low monodispersity was prepared in the same manner as in V. The emulsion contained tabular silver iodobromide grains having an average grain size of 0.55 μm, an average aspect ratio of 12, an average silver iodide content of 5% and a monodispersity of 40% by weight.

Em-V except that the first 6 minutes of the 12-minute double jet method in the preparation of Em-VI above was changed to a single jet
Em-VIII with low monodispersity was prepared in the same manner as in I. The emulsion contained tabular silver iodobromide grains having an average grain size of 0.31 μm, an average aspect ratio of 13, an average silver iodide content of 5% and a monodispersity of 44% by weight.

An emulsion Em-XIV containing tabular silver iodobromide grains having an average grain size of 0.31 μm, an average aspect ratio of 8, an average silver iodide content of 5% and a monodispersity of 65% by weight is similarly adjusted. , Average particle size 0.55μm, average aspect ratio 12, monodispersity 53% by weight
Emulsion containing tabular silver chlorobromide grains, Em-XV, average grain size
0.18 μm, average aspect ratio 10, average silver iodide content 5
%, Emulsion Em-XVI containing tabular silver iodobromide grains having a monodispersity of 55% by weight, average grain size 0.70 μm, average aspect ratio 8,
Emulsion Em-XVII containing tabular silver iodobromide grains having an average silver iodide content of 5% and a monodispersity of 59% by weight, an average grain size of 0.31 μm,
Average aspect ratio 7, average silver iodide content 5%, monodispersity
Emulsion Em-XVIII containing 58% by weight of tabular silver iodobromide grains
An emulsion Em-XIX containing tabular silver iodobromide grains having an average grain size of 0.55 μm, an average aspect ratio of 22, an average silver iodide content of 5% and a monodispersity of 52% by weight was prepared.

(Preparation of light-sensitive material) Silver halide emulsions Em-I to VI were added with sodium thiosulfate,
Chloroauric acid and ammonium thiocyanate were added for optimum chemical ripening, and then 4-hydroxy-6-methyl-
1,3,3a, 7-Tetrazaindene was added as a stabilizer. The coating samples shown below were prepared using these emulsions.

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

A multilayer 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.

Sample-1 (Comparative) First layer: Antihalation layer Gelatin layer containing black colloidal silver.

Second layer: intermediate layer A gelatin layer containing an emulsified dispersion of 2,5-di-t-octylhydroquinone.

Third layer; low-sensitivity red-sensitive silver halide emulsion layer Monodisperse emulsion consisting of AgBrI containing average particle size () 0.40 μm, AgI 6 mol% ... Silver coating amount 1.8 g / m ² Sensitizing dye I ... 1 mol silver On the other hand, 5.0 × 10 ^-4 moles Sensitizing dye II ... 0.8 × 10 ^-4 moles to 1 mole of silver Cyan coupler (C-1) ... 0.085 moles to 1 mole of silver Colored cyan coupler (CC-1) ... 0.005 mol to 1 mol of silver DIR compound (D-1) ... 0.0025 mol to 1 mol of silver Fourth layer; high-sensitivity red-sensitive silver halide emulsion layer Average grain size () 0.8 μm, AgI 6.0 mol% Monodisperse emulsion consisting of AgBrI containing ... Silver coating amount 1.3 g / m ² Sensitizing dye I ... 2.5 × 10 ^-4 mol per 1 mol silver Sensitizing dye II ... 0.8 × 10 ^-4 per 1 mol silver Mol Cyan coupler (C-2) ... 0.007 mol per mol of silver Cyan coupler (C-3) ... 0.027 mol per mol of silver Colored cyan coupler (CC-1) ... silver 0.0015 mol DIR compound (D-1) ... 0.0015 mol fifth layer of silver 1 mol per mol, the same as the intermediate layer a second layer, the gelatin layer.

Sixth layer: low-sensitivity green-sensitive silver halide emulsion layer Emulsion ... Coating amount of silver 1.5 g / m ² Sensitizing dye III: 2.0 × 10 ^-4 mol per mol of silver Sensitizing dye IV: per mol of silver 1.0 × 10 ^-4 mol Magenta coupler ... 0.090 mol to 1 mol of silver Colored magenta coupler (CM-1) ... 0.004 mol to 1 mol of silver DIR compound (D-1) ... 0.0040 to 1 mol of silver Molar 7th layer: High-sensitivity green-sensitive silver halide emulsion layer Emulsion ... Coating amount of silver 1.4 g / m ² Sensitizing dye III: 1.2 × 10 ^-4 mol per 1 mol of silver Sensitizing dye IV: 1 mol of silver On the other hand, 0.8 × 10 ^-4 mol Magenta coupler ... 0.015 mol per 1 mol of silver Colored magenta coupler (CM-1) ... 0.002 mol per mol of DIR compound (D-1) ... 1 mol of silver 0.0012 mol Eighth layer; Yellow filter layer Yellow colloidal silver and emulsified dispersion of 2,5-di-t-octylhydroquinone Gelatin layer.

Layer 9: Low-sensitivity blue-sensitive silver halide emulsion layer Monodisperse emulsion consisting of AgBrI containing 0.48 μm average grain size and 6 mol% AgI ... Silver coating amount 0.9 g / m ² Sensitizing dye V ... 1 mol silver 1.3 × 10 ^-4 mol Yellow coupler (Y-1) ... 0.29 mol per 1 mol of silver 10th layer; high-sensitivity blue-sensitive emulsion layer Monodisperse emulsion consisting of AgBrI containing 0.8 μm average grain size and 7 mol% AgI ( Emulsion IV) ... Silver coating amount 0.5 / m ² Sensitizing dye V ... 1.0 × 10 ⁻⁴ mol per mol of silver Yellow coupler (Y-1) ... 0.08 mol per mol of silver DIR compound (D-1) )… 0.0030 mol per 1 mol of silver 11th layer; 1st protective layer Silver iodobromide (AgI 1 mol%, average particle size 0.07 μm)… Silver coating amount 0.5 g / m ² UV absorber UV-1, UV -2 containing gelatin layer.

12th layer: 2nd protective layer A gelatin layer containing polymethylmethacrylate particles (diameter 1.5 μm) and formalin scavenger (HS-1).

In addition to the above composition, each layer contains a gelatin hardening agent (H
-1) and (H-2) and a surfactant were added. The compounds contained in each layer of Sample 1 are as follows.

Sensitizing dye I; Anhydro-5,5'-dichloro-9-ethyl-3,3'-di- (3-sulfopropyl) thiacarbocyanine hydroxide Sensitizing dye II; Anhydro-9-ethyl-3,3 ′ -Di- (3
-Sulfopropyl) -4,5,4 ', 5'-dibenzothiacarbocyanine hydroxide Sensitizing dye III; Anhydro-5,5'-diphenyl-9-ethyl-3,3'-di- (3-sulfo Propyl) oxacarbocyanine hydroxide Sensitizing dye IV; Anhydro-9-ethyl-3,3'-di- (3
-Sulfopropyl) -5,6,5'6'-dibenzooxacarbocyanine hydroxide Sensitizing dye V; Anhydro-3,3'-di- (3-sulfopropyl) -4,5-benzo-5'- Methoxythiacyanine hydroxide Samples 1 to 15 were prepared by combining magenta couplers and silver halide emulsions as shown in Table 2 below for the sixth and seventh layers of Sample-1.

Each of the sample Nos. 1 to 15 thus prepared was subjected to wedge exposure using white light and then subjected to the following development processing.

Processing step (38 ° C.) Color development 3 minutes 15 seconds Bleach 6 minutes 30 seconds Fixing 6 minutes 30 seconds Washing 3 minutes 15 seconds Stabilization 1 minute 30 seconds Dry The processing solution composition used in each processing step is as follows.

[Color developer] 4-amino-3-methyl-N-ethyl-N- (β-hydroxyethyl) -aniline ・ sulfate 4.75g anhydrous sodium sulfite 4.25g hydroxylamine ・ 1/2 sulfate 2.0g anhydrous potassium carbonate 37.5g Sodium bromide 1.3g Nitrilotriacetic acid.3 sodium salt (monohydrate) 2.5g Potassium hydroxide 1.0g Add water to make 1.

[Bleaching solution]

Ethylenediaminetetraacetic acid iron ammonium salt 100g Ethylenediaminetetraacetic acid diammonium salt 10.0g Ammonium bromide 150.0g Glacial acetic acid 10.0ml Add water to make pH 1 and use ammonium water to adjust pH = 6.
Adjust to 0.

[Fixer]

Ammonium thiosulfate 175.0 g Anhydrous sodium sulfite 8.5 g Sodium metasulfite 2.3 g Add water to make 1 and adjust to pH = 6.0 with acetic acid.

[Stabilizer]

 Formalin (37% aqueous solution) 1.5 ml Conidax (manufactured by Konishi Roku Photo Industry Co., Ltd.) 7.5 ml Add water to make 1

On the other hand, Sample Nos. 1 to 7 were exposed to a white wedge, and the processing running characteristics were evaluated using the development processing solution. The replenishing amount of the color developing solution during running was 220 ml / m ² , and the mother liquor exchange rate was up to 90%.

Table 3 shows the relative sensitivity in terms of the density of green light (each sensitivity at the start of the running test was set to 100) and the change in fogging Δf (fog at the end of running-fog at the start of running).

Since the photographic light-sensitive material of the present invention uses a pyrazoloazole type coupler, it not only has excellent color reproduction,
As is clear from Table 3, the adverse effect of the pyrazoazole type coupler on the photographic characteristics is remarkably improved by using the tabular silver halide grains of the present invention.

As is clear from Table-3, sample No. 8 with low monodispersity
Is not preferable because the change in fog during running is large ΔF, and Samples Nos. 9 and 10 out of the grain size range of the present invention also have large ΔF, and Sample No. 14 containing no silver iodide changes in fog during running. ΔF is extremely inferior, and it can be seen that Sample No. 13 in which the comparative magenta coupler and the silver halide grain of the present invention are combined cannot obtain the effects of the present invention.

Claims (1)

[Claims] 1. A magenta coupler represented by the following general formula [MI] and an average particle diameter of 0.2 to 0.6 μm, an average value of particle diameter / thickness of 8 or more and 20 or less, and ±
50% by weight of silver halide grains contained in the 20% grain size range
A silver halide color photographic light-sensitive material comprising at least one emulsion layer containing monodisperse tabular silver iodobromide grains as described above. General formula [MI] [In the formula, Z represents a non-metal atom group necessary for forming a nitrogen-containing heterocycle, and the ring formed by Z may have a substituent. X represents a hydrogen atom or a group capable of leaving by reaction with an oxidized form of a color developing agent. R represents a hydrogen atom or a substituent. ]