JPS61116355A - Silver halide color photosensitive material - Google Patents

Abstract

PURPOSE:To improve a reproducibility and a contrast of an image by forming a photographic constitutive layer contg. a blue, a green and a red colored photosensitive silver halide emulsion layers on a reflective substrate. CONSTITUTION:The titled material is prepared by forming the photographic constitutive layers contg. the above described blue, green, and red colored emulsion layers on the reflective substrate respectively. A compd. (DIR compd.) releasing a development inhibitor or its precursor by reacting with an oxidant of a color developing agent is necessary to be incorporated to at least one of the photographic constitutive layers. At least one of a yellow coupler having >=0.3 a relative coupling reaction rate is necessary to be compounded to the blue colored photosensitive silver halide emulsion layer.

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 specifically, to a color photographic paper that has improved color reproducibility and image sharpness and can suppress the occurrence of fogging. This invention relates to silver halide photographic materials.

In general, silver halide color photographic light-sensitive materials have three types of photographic silver halide emulsion layers selectively sensitized to have sensitivity to blue light, green light, and red light, coated on a support. ing. For example, in silver halide photographic materials for color negatives, generally a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, and a red-sensitive silver halide emulsion layer are coated in this order from the exposed side. A bleachable yellow filter layer is provided between the blue-sensitive silver halide emulsion layer and the green-sensitive silver halide emulsion layer to absorb the blue light that passes through the blue-sensitive silver halide emulsion layer. It is provided. Further, each emulsion layer is provided with other intermediate layers for various special purposes, and a protective layer as the outermost layer. Furthermore, for example, in a silver halide photographic light-sensitive material for color photographic paper, a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, and a blue-sensitive silver halide emulsion layer are generally arranged in this order from the exposed side. It is painted with
Similar to silver halide photographic materials for color negatives, intermediate layers such as an ultraviolet absorbing layer, protective layers, etc. are provided for each specific purpose. It is also known that each of these silver halide emulsion layers is provided in a different arrangement from the above, and furthermore, each silver halide emulsion layer is sensitive to substantially the same wavelength range for each color light. It is also known to use a photosensitive silver halide emulsion layer consisting of two layers. In these silver halide color photographic materials, exposed silver halide grains are developed using, for example, an aromatic primary amine color developing agent as a single color developing agent, and the resulting color developing agent is oxidized. A dye image is formed by reaction of the product with the dye-forming coupler.

In this method, phenolic or naphtholic cyan couplers, 5-pyrazolones, pyrazolinobenzimidazoles, pyrazolotriazoles, indacylones or cyanocoupler couplers, 5-pyrazolones, pyrazolinobenzimidazoles, pyrazolotriazoles, indacylones or cyanocouplers are typically used to form cyan, magenta and yellow dye images, respectively. Acetyl-based Bouinta couplers and acylacetamide-based yellow couplers are used. These dye-forming couplers are contained in the light-sensitive silver halide emulsion layer or in the developing solution. This invention relates to a silver halide photographic light-sensitive material.

[Prior Art] In recent years, there has been a demand in the industry for silver halide color photographic materials with high image quality. In the so-called color negative/positive system in which the final image is obtained by printing on a material, the problem is that the image quality, especially the image sharpness, of silver halide photographic materials for color photographic paper is lower than that of silver halide photographic materials for color negatives. It has become.

The reason why the image sharpness of silver halide photographic materials for color photographic paper is low is considered to be as follows.

In other words, since a white reflective support is used, the halation and irradiation caused by light scattering within the reflective support and reflection on the surface of the reflective support during exposure are extremely large. This is the biggest cause.

As a technique for preventing deterioration of image sharpness due to halation and irradiation, it is known to provide a colored layer such as an antihalation layer or a filter layer. A technique is known in which a coloring agent such as colloidal silver is added to an alkali-soluble resin or a hydrophilic colloid in such a colored layer. It goes without saying that it must be completely decolored in the processing steps after exposure of the photosensitive material, such as the development step, but it is also required to have excellent spectral absorption and be photochemically inert. . However, in the case of colloidal silver, it is not always possible to obtain sufficiently favorable spectral characteristics, which has a negative effect on color reproducibility, and also because it is not completely inert from a photographic chemical perspective, it causes undesirable fog in the silver halide emulsion layer. There were some shortcomings.

Also, British Patent Nos. 5114, 809 and 1,277.
No. 429.

JP 48-85130, JP 49-99820, JP 49-114420, JP 49-129537, JP 5
No. 2-108115, No. 59-25845, U.S. Patent No. 2,274,782, No. 2,533,472, U.S. Patent No. 2
, 95111.879, 3,125,448, 3,148.187, 3,177.078, 3
, 247, 127, 3.540.887, 3.
No. 575,704, No. 3,853,805, No. 3,7
No. 18,472, No. 4,071,312, No. 4,07
It is known that water-soluble dyes such as those described in No. 0,352 are incorporated into silver halide color photographic materials, but such dyes are not sufficient to prevent irradiation and halation. It was not possible to obtain high image sharpness.

Furthermore, there is also a known technique for improving image sharpness by roughening the surface of the support by processing the surface of the support, such as in JP-A No. 48-89731, but the effect of improving image sharpness by this technique is extremely low. Very little.

Furthermore, mainly for negative silver halide photographic light-sensitive materials, US Pat. No. 3,148,082 and US Pat.
Compounds that couple with oxidized color developing agents to produce dyes and release development inhibitors, such as those described in U.S. Patent No. 27,554, or U.S. Pat.
A development inhibitor is released by coupling with an oxidized form of a color developing agent as described in No. 45, but a compound that does not form a dye (DIR compound) enhances the so-called interimage effect and improves image sharpness. Although techniques for improving the IRR are known, in the structure of ordinary silver halide photographic materials for color photographic paper, the IRR is
Even when the compound was used, almost no effect of improving image sharpness was obtained.

On the other hand, a so-called fast-reaction coupler is known as a type of yellow coupler used in a blue-sensitive silver halide emulsion layer, but its use has caused a problem of significant fogging.

[Problems to be Solved by the Invention] The present invention has been made in view of the above, and provides a silver halide color photographic light-sensitive material that has good color reproducibility and high image sharpness, and can suppress the occurrence of fog. The technical challenge is to provide the following.

Means for Solving Problem c] The silver halide color photographic light-sensitive material of the present invention which solves the above technical problem has at least a blue-sensitive silver halide emulsion layer and a green-sensitive silver halide emulsion layer on a reflective support. In a silver halide color photographic light-sensitive material having photographic constituent layers including a red-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer, at least one of the photographic constituent layers contains development inhibition by reacting with an oxidized form of a color developing agent. an i-diro coupler which contains at least one compound that releases a chemical substance or a precursor thereof (hereinafter referred to as a DIR compound) and has a relative coupling reaction rate of 0.3 or more in a blue-sensitive silver halide emulsion layer. (hereinafter referred to as a fast-reactive yellow coupler).

Here, the photographic constituent layers refer to all hydrophilic colloid layers involved in image formation, such as silver halide emulsion layers, subbing layers, intermediate M (mere intermediate layer, filter layer, ultraviolet absorption layer, antihalation layer). etc.), protective layer, etc.

The DIR compound of the present invention may be contained in at least one of the photographic constituent layers, but is preferably contained in the green-sensitive silver halide emulsion layer and/or its adjacent layer. Furthermore, a preferred embodiment of the present invention is that the red-sensitive silver halide emulsion layer contains at least one compound represented by the following general formula (I).

General Formula (I) In General Formula (1), R1 is a straight chain or branched alkyl group having 2 to 4 carbon atoms, R2 is a hydrogen atom or a straight chain or branched alkyl group having 1 to 4 carbon atoms, R3 and R4 may be the same or different, and each represents a straight chain or branched alkyl group having 1 to 10 carbon atoms.

The present invention will be explained in more detail below.

Typical DIR compounds of the present invention include DIR couplers in which a group capable of forming a compound having a development inhibiting effect when separated from the active site is introduced into the active site of the coupler; for example, British Patent No. 935, 454, U.S. Patent No. 3,227,554, U.S. Patent No. 4,095.984,
It is described in No. 4,149,888, Japanese Unexamined Patent Publication No. 151944/1984, etc. The above-mentioned DIR coupler has the property that, when subjected to a coupling reaction with an oxidized form of a color developing agent, the coupler core forms a dye while releasing a development inhibitor. Further, the present invention is disclosed in U.S. Pat. No. 3,852,345, U.S. Pat. f1i33
No. 3.1381.95f3, No. 4,052,21
No. 3, JP-A-53-110529, JP-A No. 54-1333
No. 3, No. 55-161237, etc., when a coupling reaction occurs with an oxidized form of a color developing agent,
Also included are compounds that release development inhibitors but do not form dyes.

Furthermore, JP-A-54-145135 and JP-A-56-1
No. 14946 and No. 57-154234, No. 58-2
When reacted with an oxidized form of a color developing agent such as those described in No. Also included in the invention are so-called timing DII'l compounds, which are compounds that release inhibitors.

Also, JP-A No. 58-160954, No. 58-16294
Timing DI in which a timing group as described above is bonded to a coupler core that produces a completely diffusible dye when reacted with an oxidized color developing agent described in No. 9.
It also includes R compounds.

According to the present invention, more preferred DIR compounds can be represented by the following general formulas ([I) and (III), among which the most preferred DIR compound is a compound represented by the following general formula (m).

General formula (n) CouP-inhibitor In the formula, Goup is a coupler component (compound) capable of coupling with an oxidized form of a color developing agent, such as open-chain ketomethylene compounds such as acylacetanilides and acylacetate esters, pyrazolones, Pyrazolotriazoles,
These are dye-forming couplers such as pyrazolinobenzimidazoles, indasilones, phenols, and naphthols, and coupling components that do not substantially form dyes such as acetophenones, indanones, and oxacylones.

In addition, the inhibitor in the above formula is a component (compound) that is released by reaction with a color developing agent and inhibits the development of silver halide.
and preferred compounds include benztriazole,
There are heterocyclic compounds and heterocyclic mercapto compounds such as 3-octylthio-1,2,4-)riazole and the like.

Examples of the above-mentioned heterocyclic group include a tetrazolyl group, thiadiazolyl group, oxadiazolyl group, thiazolyl group, oxasilyl group, imidazolyl group, triazolyl group, and the like. Specifically, 1-phenyltetrazolyl group, ■-ethyltetrazolyl group,! -(4-hydroxyphenyl)tetrazolyl group, 1,3.4-thiazolyl group,
Examples include 5-methyl-1,3,4-oxadiazolyl group, benzthiazolyl group, benzoxasilyl group, benzimidazolyl group, and 4) 1-1.2.4-triazolyl group.

In addition, in the above general formula (II), the inhibitor is bonded to the active site of Coup.

In the general formula (m) Coup -TI)IE-inhibitor, the inhibitor is the same as defined in the above general formula (If). Coup also includes coupler components that form completely diffusible dyes, as defined in general formula (U). TIME is expressed by the following general formula (ff
), (V), (VI) and (■), but are not limited to these.

General formula (IV) In the formula, X represents an atomic group necessary to complete the benzene ring or naphthalene ring, Y is -0-1 -3-, -N- (where R7 is a hydrogen atom, ) represents an alkyl group or an aryl group, and the coupler component (
: Bonded to the coupling position of oup.

Further, Rs and Rs each represent a group having the same meaning as R7 above, but Rs is substituted with -, and is bonded to a hetero atom contained in the inhibitor.

General formula (V) In the formula, W is a group having the same meaning as Y in the general formula (J), and R8 and R9 are also R5 in the general formula (■).
and a group having the same meaning as Rg.

Rra is a hydrogen atom, an alkyl group, an aryl group, an acyl group, a sulfone group, an alkoxycarbonyl group, a heterocyclic residue, and Ru is a hydrogen atom, an alkyl group, an aryl group, a heterocyclic residue, an alkoxy group, an amino group, It represents an acylamido group, a sulfonamide group, a carboxy group, an alkoxycarbonyl group, a carbamoyl group, a cyan group, and this timing group is bonded by W to the coupling position of Caup.

R day 10- is attached to the heteroatom of the inhibitor.

s Next, an example of a timing group that releases an inhibitor by an intramolecular nucleophilic substitution reaction is shown by the general formula (Vl).

General formula (Vl) Nu -E In the formula, Nu is a nucleophilic group having an electron-rich oxygen, sulfur or nitrogen atom, and is bonded to the coupling position of Caup. E is an electrophilic group having an electron-poor carbonyl, thiocarbonyl, phosphinyl, or thiophosphinyl group and is bonded to the heteroatom of the inhibitor. V has a steric relationship between Nu and E, and after Nu is released from Coup, it undergoes an intramolecular nucleophilic substitution reaction accompanied by the formation of a 3- to 7-membered ring, and thereby releases the inhibitor. It is a binding group that can be released.

General formula (VII) Goup-0CHz-inhibitor Coup and inhibitor have the same meanings as above.

A typical example of the DIR compound according to the present invention will be described in the space below, but the present invention is not limited thereto.

[Exemplary compounds]

(D-1) (D-2) l H3 (D-3) (D-4) H (D-5) H N=N (D-10) (I)-11) (D-13) No.

CD-15) (D-16) No.

(D-17) H NN” Ichino
−Nono
ζnot (D-28) (D-49) OL (D-30) (D-31) CD-36) (D-37) (D-38) ol,)12socool(oooo12)(25(D
-39) (D-40) (D-41) (D-42) (D-43) (D-44) H (D-46) (D-48) (D-49) (D-50) t (D-56) (D-57) (D-58) t (D-59) OL (D-80) (D-61) (D-62) (D-63) (D-64) H H O □H3 (D-66) H (D-67) H H (D-68) (D-69) (D-70) (D-71) H (D-72) (D-73) (D-74 ) (D-75) C,H.

(D-76) OH OH (D-82) (D-83) The DIR compound of the present invention can be added to a photosensitive silver halide emulsion layer and/or a non-photosensitive photographic constituent layer. It is preferably added to a green-sensitive silver halide emulsion layer, especially a green-sensitive silver halide emulsion layer and/or its adjacent layer.

Two or more types of DIR compounds of the present invention may be contained in the same layer, or the same DIR compound may be contained in two or more different layers.

It is generally preferable to use these DIR compounds in an amount of 2×IO''4 to 5XlQ-1 mol per mol of silver in the emulsion layer, more preferably lX 10-3 to l
'% Jl/ is used.

Next, the fast-reacting yellow coupler of the present invention will be explained.

The fast-reactive yellow coupler used in the blue-sensitive silver halide emulsion layer according to the present invention is a yellow coupler with a relative coupling reaction rate of 0.3 or more, preferably a relative coupling reaction rate of 0.5 or more. It is a yellow coupler.

The coupling reaction rate of the couplers is determined by the rate of the coupling reaction of the two couplers M and N, which give different dyes that can be clearly separated from each other, in the color image obtained by mixing the mixture and adding it to a silver halide emulsion for color development. It can be determined as a relative value by measuring the amount of pigment.

If the maximum concentration (DM) sag of coupler M is expressed as the color development in the middle stage, and the color development of coupler N is expressed as (DN)wax,, the color development of DN, then the reaction activity of the double force puller is The ratio RM/RN is expressed by the following formula.

That is, in a silver halide emulsion containing mixed couplers, 1
The value of the coupling activity ratio RM/RN can be determined from the slope of the straight line obtained by plotting several pairs of DM and DN obtained by applying various stages of exposure and developing one color on two orthogonal axes. .

Here, by using a constant coupler N and determining the value of RM/RN for various couplers as described above, the value of the relative coupling reaction rate can be determined.

In the present invention, the RM/RN value when the following coupler is used as the above coupler N is used.Although the amount of the fast-reactive yellow coupler of the present invention is not limited, the blue-sensitive silver halide emulsion layer is 2 X go-3 per mole of silver
The lx amount is preferably 62 to 5XIO-1 mol, more preferably 62 to 5XIO-1 mol.

Specific examples of the fast-reacting yellow coupler of the present invention are listed below, but the invention is not limited thereto.

The following margins [Example compounds] (Y-1) (Y-2) (Y-3) (Y-4) (Y-5) (Y-6) (Y-7) (Y-8) (RM/RN =0.65) (Y-9) (Y-10) (Y-11) (Y-12) (Y-13) (Y-14) HOHa (RM/RN=0.96) (Y-15
) t (Y-18) (Y-17) −-N (Y-18) t (Y-19) OL (Y-20) OL (几M/RN=0.88) (Y-21) (γ -zz,) Next, the compound represented by the general formula (I) (hereinafter referred to as the cyan coupler of the present invention) which is preferably used in the red-sensitive silver halide emulsion layer of the photographic light-sensitive material of the present invention will be explained. .

In the general formula (I), R1 is a linear or branched alkyl group having 2 to 4 carbon atoms (e.g., ethyl group, propyl group, butyl group, t-butyl group, etc.), and R2 is a hydrogen atom or having 1 to 4 carbon atoms. 4
linear or branched alkyl group (e.g., methyl group, ethyl group, propyl group, butyl group, t-butyl group, etc.), R3
and R4 may be the same or different, and each has 1 to 1 carbon atoms.
10 straight-chain or branched alkyl groups (e.g. methyl group,
Ethyl group, propyl group, t-propyl group, butyl group, t
-butyl group, etc.).

When the red-sensitive silver halide emulsion layer of the present invention is composed of 2M or more layers, the cyan coupler of the present invention may be contained in at least one red-sensitive silver halide emulsion layer.

Although the amount of cyan coupler added in the present invention is not limited,
2 x 1 per mole of silver in the red-sensitive silver halide emulsion layer
(1-3 to 5 x 0-mol is preferred, more preferably I x 10-2 to 5 x 1 g-' morph.

The cyan coupler of the present invention is disclosed in U.S. Patent No. 3,772,002.
No. 3,933,494, Special Publication No. 49-11572
Compounds disclosed in No. 1, etc. can be used.

Margin below Specific examples of the cyan coupler of the present invention are listed below.

[Exemplary compounds]

(0-1) 2-((2,4-di-tart-amylphenol)acetamide)-4,6-dichloroc1-
5-ethylphenol t (0-2) 2-(α-(2,4-di-tert-amylphenoxy)butanamide)-4,6-dichloro-
5-Ethylphenol L (0-3) 2-((2,4-di-tert-butylphenoxy)acetamide)-4,6-dichloro-5-
Butylphenol (0-4) 2-(α-(2,4-di-tert-amylphenol)hexanamide]-4,6-dichloro-5-ethylphenol (0-5) 2-(α-(2, 4-ditart-amylphenoxy)-β-methylbutanamide) -4,s-dichloro-5-ethylphenol (0-6) 6-((2,4-ditart-amylphenoxy)acetamide)-4, 6-dichloro-5-
Propylphenol (0-7) 2-((2,4-di-tert-7milphenol)acetamide) -4,6-dichloro-5
-tsrt-butylphenol Synthesis examples of exemplified compounds of the present invention are shown below, but other exemplified compounds can also be synthesized by the same method.

Synthesis of Exemplified Compound (0-1) (1)-a Synthesis of 2-nitro-4,6-dichloro-5-ethylphenol 2-nitro-5-ethylphenol 33.9°Iodine 0.
61 and ferric chloride 1.5. p to 150 ml of glacial acetic acid
dissolve. This was added to sul7lyl chloride 75- at 40°C.
It takes 3 hours to get off the axis.

The precipitate formed during the dropwise addition is dissolved by S reaction by heating and refluxing after completion of the addition of sul7lyl chloride. Heat to reflux for about 2 hours.

The reaction solution was poured into water, and the resulting crystals were purified by recrystallization with methanol. 2(1)-a was confirmed by nuclear magnetic resonance spectroscopy and elemental analysis.

(Synthesis of phenol in IJ-b2-amino-4,6-dichloro-5-ethyl (1)-a21.2.9t-300mffi was dissolved in 7 alcohol, a catalytic amount of Raney nickel was added thereto,
Hydrogen was passed through the reactor at normal pressure until no hydrogen was absorbed. After the reaction, Raney nickel was removed and alcohol was distilled off under reduced pressure. The residue (υ-su) was subjected to the next acylation without purification.

(1) -c2-((2,4-di-tart-amyl-2-enoxy)acetamide)-4,6-dichloro-5-ethylphenol synthesis (υ-18.5J of the crude amino compound obtained in
A mixture consisting of - glacial acetic acid and 16.7 liters of Suzaka soda? I
[K is dissolved, and an acetic acid solution prepared by dissolving 28.0 J of 2,4-di-tert-aminophenoxyacetic acid chloride in 5011 d of acetic acid is added dropwise at room temperature. The mixture was added dropwise over 30 minutes, and after stirring for an additional 30 minutes, one reaction solution was poured into ice water. The generated precipitate is collected by filtration, dried, and then recrystallized twice from acetonitrile to obtain the desired product. The target product was confirmed by elemental analysis and nuclear magnetic resonance spectroscopy.

028H3sNO8O12 Margin below In order to incorporate the fast-reacting yellow coupler and DIR compound of the present invention into the silver halide emulsion or other photographic constituent layer coating solution according to the present invention, the fast-reacting yellow coupler of the present invention and If the DIR compound is alkali-soluble, it may be added as an alkaline solution; if it is oil-soluble, it may be added as described in, for example, U.S. Pat. No. 2,322.
, No. 027, No. 2,801,170, No. 2.80
No. 1,171, No. 2,272.191 and No. 2
, 304,940, the fast-reactive yellow coupler and DIR compound of the present invention are dissolved in a high-boiling point solvent, if necessary in combination with a low-boiling point solvent, and dispersed in the form of fine particles. It is preferable to add it to a silver halide emulsion. At this time, other hydroquinone derivatives, ultraviolet absorbers, anti-fading agents, etc. may be used in combination as necessary, and two or more types of fast-reactive yellows of the present invention may be added. The coupler and the DIR compound may be used as a mixture.Moreover, to describe in detail the method of adding the fast-reacting yellow coupler and DIR compound of the present invention, which is preferred in the present invention, one or more of the above-mentioned The fast-reacting yellow coupler and DIR compound of the invention are used together with other couplers, hydroquinone derivatives, anti-fading agents, ultraviolet absorbers, etc. as necessary, as well as organic acid amides, carbamates, esters, ketones, urea derivatives, and ethers. ,
Hydrocarbons etc., especially di-n-butyl phthalate, triresyl phosphate, triphenyl phosphate,
Di-isooctyl azelate, di-n-butyl sebacate, tri-n-hexyl phosphate, N,N-di-ethyl-caprylamidobutyl, N,N-diethyl laurylamide, n-pentadecyl phenyl ether, di-octyl Phthalate, n-nonylphenol, 3-pentadecyl phenylethyl ether, 2,5-di-5ec-
High-boiling solvents such as amyl phenyl butyl ether, monophenyl-di-rochlorophenyl phosphate or fluorohalaffin, and/or methyl acetate, ethyl acetate, propyl acetate, butyl acetate, butyl propionate, cyclohexanol, diethylene glycol monoacetate, nitromethane, Carbon chloride, chloroform, cyclohexane tetrahydrofuran, methyl alcohol,
Acetonitrile, dimethylformamide, dioxane,
Dissolved in a low boiling point solvent such as methyl ethyl ketone, anionic surfactants such as alkylbenzenesulfonic acids and alkylnaphthalenesulfonic acids and/or nonionic surfactants such as sorbitan sesquioleate and sorbitan monolaurate, and/or gelatin. It is mixed with an aqueous solution containing a hydrophilic binder such as, emulsified and dispersed using a high-speed rotating mixer, colloid mill, ultrasonic dispersion device, etc., and then added to a silver halide emulsion.

In addition, the above coupler or DIR compound may be dispersed using a latex dispersion method.The latex dispersion method and its effects are described in JP-A-49-74538 and JP-A-51-5.
No. 9943, 54-32552 specification publication and research
Disclosure August 1976, No. 14850
．． It is described on pages 77-79.

Suitable latexes include, for example, styrene, acrylate,
n-butyl acrylate, n-butyl methacrylate,
2-7 Cetoacetoxyethyl methacrylate, 2-(methacryloyloxy)ethyltrimethylammonium methosulfate, 3-(methacryloyloxy)propane-1-sulfonic acid sodium salt, N-isopropylacrylamide, N-(2-(2- methyl-4-oxopentyl)]acrylamide, 2-acrylamide-
Seven-dimensional homopolymers, copolymers and terpolymers such as 2-methylpropanesulfonic acid and the like.

The above DIR compounds are disclosed in U.S. Pat. No. 3,227,554, U.S. Pat.
Same 3. fi32.345, fi3,928,041,
No. 3,933,500, No. 3,938,998, No. 3,958,983, No. 3. ! No. 361,959, No. 4.046.574, No. 4,052,213, No. 4
, No. 063,950, No. 4,095,984, No. 4,
149,888, British Patent No. 4,234.678, British Patent No. 2,072,383, British Patent No. 2,070,288, Research Disclosure No. 21228 (1981)
, JP-A-50-81144, JP-A No. 50-81145,
No. 51-13239, No. 51-64927, No. 51
-104825, 51-105819, 52-
No. 65433, No. 52-82423, No. 52-117
No. 627, No. 52-130327, No. 52-1546
No. 31, No. 53-7232, No. 53-9116, No. 53-29717, No. 53-70821, No. 53-
No. 103472, No. 53-110529, No. 53-1
No. 35333, No. 53-143223, No. 54-13
No. 333, No. 54-49138, No. 54-11424
No. 1, No. 57-35858, No. 54-145135, No. 55-161237, No. 56-114946,
It can be synthesized by the methods described in Japanese Patent Application No. 57-154234, Japanese Patent Application No. 57-56837, Japanese Patent Application No. 57-44831, Japanese Patent Application No. 57-45809, etc.

The development inhibitor released from the DIR compound of the present invention in a manner corresponding to the image density during development suppresses the development in a layer corresponding to the image density when the layer is a light-sensitive emulsion layer, thereby suppressing the development of the image. On the other hand, when the released development inhibitor diffuses into other layers, the development of the other layers is caused to correspond to the density of the image in the diffusion source layer. It is possible to obtain two types of image effects: a so-called inter-image effect, such as a suppressing mask effect, and the like.

Although the amount of silver (silver material amount) in the silver halide emulsion layer in the silver halide color photographic light-sensitive material of the present invention is not limited,
0.3 to Ig/r for the entire photosensitive silver halide emulsion layer
In other words, in order to obtain excellent image quality, the silver amount is preferably Ig/rn' or less; on the other hand, in order to obtain high maximum density and high sensitivity, Preferably, the amount of silver is 0.3 g/m'' or more.

Silver halide compositions preferably used in the present invention include silver chloride, silver bromide, silver chlorobromide, and silver chloroiodobromide.

Furthermore, it may be a combination mixture of these, i.e., in order to realize fast developability, it is preferable that the halogen composition of the silver halide contains a chlorine atom, and a salt odor containing at least 1% silver chloride. Silver oxide or silver chloroiodobromide is particularly preferred.

Further, the crystals of these silver halide grains may be normal crystals, twin crystals, or other crystals, and [l. 0.0] plane and [1,1
, 'l] Any ratio can be used for the plane. Furthermore,
The crystal structure of these silver halide grains may be uniform from the inside to the outside, or may have a layered structure (core-shell type) in which the inside and outside are different. The silver halide may be of the type that forms a latent image mainly on the surface or of the type that forms it inside the grain.
No. 934 and Japanese Patent Application No. 170070/1983) may also be used.

The silver halide grains preferably used in the present invention are substantially monodisperse, and may be obtained by any preparation method such as an acid method, a neutral method, or an ammonia method.

Alternatively, for example, seed particles may be produced using an acidic method, and then grown using an ammonia method, which has a fast growth rate, to grow to a predetermined size. ．． It is preferable that silver ions and halide ions are sequentially and simultaneously implanted and mixed in an amount commensurate with the growth rate of silver halide grains as described in, for example, JP-A No. 54-48521, while controlling p7kg and the like.

Preferably, the silver halide grains according to the present invention are prepared as described above. A composition containing the silver halide grains is referred to herein as a silver halide emulsion.

These silver halide emulsions contain: active gelatin: sulfur sensitizers such as allylthiocarbamide, thiourea, cystine, selenium sensitizers; reduction sensitizers such as stannous salts, urea dioxide, etc. , polyamines, etc.; noble metal sensitizers such as gold sensitizers, specifically potassium aurithiocyanate, potassium chloroaurate, 2-aurothio-3-
Sensitizers such as methylbenzothiazolium chloride or water-soluble salts such as ruthenium, palladium, platinum, rhodium, iridium, etc., specifically ammonium chloroparadate, potassium chlorooleate and sodium chlorovaladate (these These substances act as sensitizers or fog suppressants depending on the amount. It may also be chemically sensitized (for example, in combination with a sensitizer).

The silver halide emulsion according to the present invention is chemically ripened by adding a sulfur-containing compound, and before, during, or after this chemical ripening, a nitrogen-containing emulsion having at least one hydroxytetrazaindene and mercapto group is produced. It may also contain at least one type of terocyclic compound.

The silver halide used in the present invention is mixed with an appropriate sensitizing dye in an amount of 5 X IQ-8 to 3 X I per mole of silver halide in order to impart photosensitivity to the desired wavelength range.
Optical sensitization may be achieved by adding n-3 moles.

Various sensitizing dyes can be used, and each sensitizing dye can be used alone or in combination of two or more types. Examples of the sensitizing dyes that can be advantageously used in the present invention include the following: I can list kimono.

That is, as a sensitizing dye used in a blue-sensitive silver halide emulsion layer, for example, the West German patent! No. 329,080, U.S. Patent No. 2,231,858, U.S. Patent No. 2,493,748,
No. 2.503,776, No. 2,519,001, No. 2,912,329, No. 3. [i56,959, 3,872,897, 3,894.217, 4
, No. 025,349, No. 4,048,572, British Patent No. 1,242,588, and Japanese Patent Publication No. 14030/1973.

Examples include those described in No. 52-24844. Further, as a sensitizing dye used in a green-sensitive silver halide emulsion, for example, U.S. Patent No. 1.1139.20
No. 1, No. 2,072,908, No. 2,739,149
No. 2,1145.783, British Patent No. 505,97
Typical examples thereof include cyanine dyes, merocyanine dyes, and composite cyanine dyes as described in No. 9 and the like. Furthermore, as sensitizing dyes used in red-sensitive silver halide emulsions, for example, US Pat.
, No. 269,234, No. 2,270,378, No. 2.
No. 442,710, No. 2,454. E129, same 2,
Typical examples include cyanine dyes, merocyanine dyes, and composite cyanine dyes such as those described in No. 778,280. Furthermore, cyanine dyes, merocyanine dyes or composite cyanine dyes such as those described in U.S. Pat. No. 2,213,885, U.S. Pat. It can be advantageously used in green-sensitive silver halide emulsions or red-sensitive silver halide emulsions.

These sensitizing dyes may be used alone or in combination.

The photographic material of the present invention may be optically sensitized in a desired wavelength range by a spectral sensitization method using cyanine or merocyanine dyes alone or in combination, if necessary.

A typical particularly preferred spectral sensitization method is, for example, Japanese Patent Publication No. 43-493 concerning the combination of benzimidazolocarbocyanine and benzoxazolocarbocyanine.
No. 6, No. 43-22884, No. 45-18433,
No. 47-37443, No. 48-28293, No. 49
No.-6209, No. 53-12375, JP-A-52-2
No. 3931, No. 52-51932, No. 54-8011
No. 8, No. 58-153926, No. 59-116646
No. 59-116647 and the like.

Further, regarding the combination of carbocyanine having a benzimidazole nucleus with other cyanine or merocyanine, for example, Japanese Patent Publication Nos. 45-25831 and 47-11
No. 114, No. 47-25379, No. 48-38406
No. 48-38407, No. 54-34535, No. 55-1569, JP-A-50-33220, No. 50
-38526, 51-107127, 51-1
No. 15820, No. 51-135528, No. 52-10
No. 4916, No. 52-104917, and the like.

Furthermore, regarding combinations of benzoxazolocarbocyanine (oxa-carbocyanine) and other carbocyanines, for example, Japanese Patent Publication Nos. 44-32753 and 46
-11627, Japanese Unexamined Patent Publication No. 1483/1983, and Japanese Patent Publication No. 38408/1983 regarding merocyanine.
No. 48-41204, No. 50-40662, JP-A No. 58-25728, No. 58-10753, No. 5
No. 8-91445, No. 59-116645, No. 50-
No. 33828 etc. are mentioned.

Regarding combinations of thiacarbocyanin and other carbocyanins, for example, Japanese Patent Publications Nos. 43-4932, 43-4933, 45-26470, and 46
-18107, No. 47-8741, JP-A-59-1
No. 14533, etc., and the method described in Japanese Patent Publication No. 49-6207, which uses zeromethine or dimethine merocyanine, monomethine or trimethine cyanine, and styryl dye, can be advantageously used.

In order to add these sensitizing dyes to the silver halide emulsion according to the present invention, a dye solution such as methyl alcohol, ethyl alcohol, acetone, dimethylformamide, or fluorinated alcohol described in Japanese Patent Publication No. 40659/1984 is used in advance. It is used by dissolving it in a wood-friendly organic solvent.

The addition may be made at any time such as at the start of chemical ripening of the silver halide emulsion, during ripening, or at the end of ripening, and in some cases, it may be added at a step immediately before coating the emulsion.

Each of the silver halide emulsion layers according to the present invention contains a coupler other than the fast-reactive dye, low coupler and DIR compound of the present invention, that is, a compound capable of reacting with an oxidized product of a single color developing agent to form a dye. The blue-sensitive silver halide emulsion layer according to the present invention contains the fast-reactive yellow coupler of the present invention, but the blue-sensitive silver halide emulsion layer contains a yellow coupler other than the present invention. However, it is preferable that yellow couplers other than the present invention be used in an amount of less than 45 mol % based on the total amount of yellow couplers. Each of the silveride emulsion layers can contain a coupler, that is, a compound capable of reacting with an oxidized form of a color developing agent to form a dye.

As the couplers that can be used in the present invention, yellow couplers, magenta couplers and cyan couplers can be used without any particular limitations. These couplers may be so-called 2-equivalent type couplers or 4-equivalent type couplers, and in combination with these couplers, it is also possible to use diffusible dye-releasing type couplers.

The yellow coupler includes an open-chain ketomethylene compound and a so-called two-equivalent type coupler.
〇-aryl substituted coupler, active point -〇-acyl substituted coupler, active point hydantoin compound substituted coupler, active point urazole compound substituted coupler and active point succinimide compound substituted coupler, active point fluorine substituted coupler, active point chlorine or bromine substituted coupler Coupler, active point -〇-
Sulfonyl-substituted couplers and the like can be used as effective yellow couplers. Specific examples of yellow couplers that can be used include U.S. Pat.
, No. 285,508, No. 3,408.1!34, No. 3
．． No. 551.155, No. 3.582.322, No. 3,
No. 725,072, No. 3,891,445, West German Patent No. 1,547,888, West German Patent Publication No. 2,219,91
No. 7, No. 2,261,381, No. 2,414.006
No., British Patent No. 1.425.020, Special Publication No. 51-10
No. 783, JP-A-47-26133, JP-A No. 48-731
No. 47, No. 51-102636, No. 50-8341, No. 50-15336, No. 50-130442, No. 51-21827, No. 50-87650, No. 52-
No. 82424, No. 52-115219, No. 58-95
Examples include those described in No. 346 and the like.

Examples of magenta couplers used in the present invention include pyrazolone, pyrazolotriazole, pyrazolinobenzimidazole, and indacylon compounds.

These magenta couplers are similar to the yellow couplers 4
It is an equivalent type coupler (it may also be a two-equivalent type coupler; specific examples of magenta couplers include U.S. Pat. Nos. 2,800,788, 2,983,808, and 3).
．． No. 082,853, No. 3,127,2139, No. 3
, 311.476, 3,419,311, 3,
No. 519,429, No. 3.558.3113, No. 3,
No. 582,322, No. 3,815,508.

3.834.908, 3.8111,445,
West German Patent No. 1,810.484, West German Patent Application (Ol,
S) No. 2,408,885, No. 2,417,945
No. 2,418,959, No. 2,424.467, Japanese Patent Publication No. 40-6031, Japanese Patent Publication No. 20826/1982, No. 52-58922, No. 49-129538, No. 49-74027 , No. 50-159336, No. 52
-42121, 49-74028, 50-60
No. 233, No. 51-26541, No. 53-55122
and Japanese Patent Application No. 55-110943.

Further, useful cyan couplers used in the present invention include, for example, phenol couplers, naphthol couplers, and the like. These cyan couplers may be not only 4-equivalent type couplers but also 2-equivalent type couplers like the yellow couplers. Specific examples of cyan couplers include U.S. Pat. Nos. 2,3811,929 and 2,434,272. No. 2.474.293, No. 2
, No. 521,908, No. 2,895,828, No. 3,
No. 034,892, No. 3,311,478, No. 3,4
58.315, 3,478.51113, 3,
No. 583,171, No. 3.591,383, No. 3,7
No. 87,411, No. 4,004,929, West German Patent Application (OL S) No. 2,414,830, No. 2,45
4.329, JP-A No. 48-59838, JP-A No. 51-2
No. 6034, No. 48-5055, No. 51-14682
No. 7, No. 52-69624, No. 52-90932,
Examples include those described in No. 58-95348.

The method of adding the above-mentioned coupler that can be used in the present invention into the photographic constituent layer of the present invention can refer to the method of adding the fast-reacting yellow coupler and DIR compound of the present invention, and the amount added is not limited. is I per mole of silver
X IQ-3 to 5 mol is preferable, more preferably I
X 10-2 to 5 X 10-'.

The silver halide color photographic light-sensitive material of the present invention may contain the following ingredients: as a filter dye in one or more of the photographic constituent layers, or for irradiation prevention and other various purposes.
Such dyes, which may contain water-soluble dyes (AI dyes), include oxonol dyes, hemioxonol dyes, merocyanine dyes and azo dyes. Among them, oxonol mN, hemioxonol dyes and merocyanine dyes are useful. Specific examples of dyes that can be used include British Patent No. 584,809, British Patent No. 1.277.429, and JP-A-4
No. 8-85130, No. 49-99620, No. 49-1
No. 14420, No. 49-129537, No. 52-10
No. 8115, No. 59-25845, U.S. Patent No. 2,27
No. 4,782, No. 2,533,472, No. 2,958
, No. 879, No. 3,125,448, No. 3,148,
No. 187, No. 3,177.078, No. 3,247.1
No. 27, No. 3,540.887, No. 3,575,70
No. 4, No. 3,853,905, No. 3.718,472
No. 4,071,312 and No. 4,070,352.

These AI dyes are generally used at a concentration of 2 per mole silver in the emulsion layer.
It is preferable to use XIQ-3 to 5XIQ-1 mol, more preferably IXIQ-2 to IX+◎-mol.

The silver halide color photographic light-sensitive material of the present invention may contain various other photographic additives, such as antifoggants, stabilizers, ultraviolet absorbers, etc. described in Research Disclosure No. 171343, Color stain prevention agent, optical brightener, color image fading prevention agent, antistatic agent,
Hardeners, surfactants, plasticizers, wetting agents, etc. can be used.

In the silver halide color photographic light-sensitive material of the present invention, the woody colloids used to prepare the emulsion include gelatin, derivative gelatin, graft polymers of gelatin and other polymers, proteins such as albumin and casein, Any of cellulose derivatives such as hydroxyethyl cellulose derivatives and carboxymethyl cellulose, starch derivatives, single or copolymer synthetic wood-philic polymers such as polyvinyl alcohol, polyvinylimidazole, and polyacrylamide are included.

The support for the silver halide color photographic light-sensitive material of the present invention may be any support having one reflection property, such as baryta paper, polyethylene coated paper, or polypropylene synthetic paper with one reflection layer. Or a transparent support 1 that is used in conjunction with a reflector, such as a glass plate, a polyester film such as cellulose acetate, cellulose nitrate, or polyethylene terephthalate, a polyamide film, a polycarbonate film, a polystyrene film, etc., and these supports are used for the purpose of use of the photosensitive material. be selected accordingly.

Various coating methods such as dipping coating, air doctor coating, curtain coating, and hopper coating can be used to coat the silver halide emulsion layer and other photographic constituent layers used in the present invention. Also, U.S. Patent No. 2,761
It is also possible to use a simultaneous coating method of two or more layers by the method described in , No. 791 and No. 2,941.8138.

In the present invention, the coating position of each emulsion layer can be determined arbitrarily.For example, in the case of a full-color photosensitive material for photographic paper, the blue-sensitive silver halide emulsion layer, the green-sensitive silver halide emulsion layer, and the green-sensitive silver halide emulsion layer are sequentially applied from the support side. The arrangement is preferably a silver emulsion layer and a red-sensitive silver halide emulsion layer, and each of these light-sensitive silver halide emulsion layers may consist of two or more layers.

In the photosensitive material of the present invention, it is optional to provide an intermediate layer with an appropriate thickness depending on the purpose, but in addition, a filter layer,
Various layers such as an anti-curl layer, a protective layer, and an antihalation layer can be used in appropriate combinations as constituent layers.

In these constituent layers, wood-philic colloids that can be used in the emulsion layer as described above can be similarly used as a binder, and can also be contained in the emulsion layer as described above. Various photographic additives can be included.

There are no particular restrictions on the method of processing photographic light-sensitive materials using the silver halide emulsion according to the present invention, and any processing method can be applied. For example, typical methods include:
After color development, a bleach-fixing treatment is carried out, and if necessary, washing and/or stabilization treatment is carried out; after color development, bleaching and fixing are carried out separately, and if necessary, further washing and/or stabilization treatment is carried out; or Pre-hardening, neutralization, color development, stop fixing, washing with water, bleaching, fixing, washing with water, post-hardening, washing with water in that order, color development, washing with water, supplementary color development, stopping, bleaching, fixing, washing with water, stabilization Processing may be performed using any method, such as Method 1, in which the developed silver produced by color development is subjected to halogenation bleaching, and then color development is performed again to increase the amount of dye produced.

The color developing solution used in processing the silver halide emulsion of the present invention is an alkaline aqueous solution containing one color developing agent and preferably having a pH of 8 or higher, more preferably a pH of 9 to 12. The aromatic primary amine developing agent used as the color developing agent is a compound having a primary amine group on an aromatic ring and has the ability to develop exposed silver halide. Precursors that form such compounds may also be added.

The color developing agent mentioned above is typically p-phenylenediamine type, and the following are preferred examples.

4-Amino-N, N-diethylaniline, 3-methyl-
4-7 minnow N, N-diethylaniline, 4-amino-
N-ethyl-N-β-hydroxyethylaniline, 3-
Methyl-4-amino-N-β-hydroxyethylaniline, 3-methyl-4-amino-N-ethyl-N-β-methoxyethylaniline, 3-methyl-4-amino-N-
Ethyl-N-β-methanesulfonamidoethylaniline, 3-methoxy-4-aminoethylroot β-hydroxyethylaniline, 3-methoxy-4-amino-N-
Ethylroot β-methoxyethylaniline, 3-acetamido-4-amino-N, N-dimethylaniline, N-ethylut β-[β-(β-methoxyethoxy)ethoxy]ethyl-3-methyl-4-aminoaniline, toethyl-N -β-(β-methoxyethoxy)ethyl-3-methyl-4-aminoaniline and salts thereof such as sulfates,
These include hydrochloride, sulfite, p-toluenesulfonate, and the like.

Furthermore, for example, JP-A-48-64932, JP-A-50-1
31526, No. 51-95849, and those described by Bent et al., Journal of the American Chemical Society, Vol. 73, pp. 3100-3125 (1951) are also mentioned as representative examples.

The amount of these aromatic primary amino compounds used depends on where the activity of the developer is set, but in order to increase the activity, it is preferable to increase the amount used, and the amount used is 0. It is used in a range of 0,002 mol/i to 0.7 mol/i. In addition, two or more compounds may be used in appropriate combination depending on the purpose. For example, 3-methyl-4-amino-N,N-diethylaniline and 3-methyl-4-amino-N-ethyl-N-β- Methanesulfonamide ethylaniline, 3-methyl-4-7 minnow N
-Ethyl-N-β-methanesulfonamidoethylaniline and 3-methyl-4-amino-N-ethyl-N-β-hydroxyethylaniline, etc. may be used in any combination depending on the purpose.

The color developer used in the present invention further contains various commonly added components, such as alkaline agents such as sodium hydroxide and sodium carbonate, alkali metal sulfites,
Alkali metal bisulfites, alkali metal ocyanates, alkali metal halides, benzyl alcohol,
A water softener, a thickening agent, a development accelerator, etc. can also be optionally included.

Examples of additives other than the above added to the color developing solution include bromides such as potassium bromide and ammonium bromide;
In addition to compounds for rapid processing solutions such as alkali iodide, nitrobenzimidazole, mercaptobenzimidazole, 5-methyl-benztriazole, l-phenyl-5-mercaptotetrazole, anti-stain agents, anti-sludge agents, preservatives, There are multilayer effect promoters, chelating agents, etc.

Bleaching agents used in bleaching solutions or bleach-fixing solutions in the bleaching process are generally known to be those in which metal ions such as iron, cobalt, and copper are coordinated with aminopolycarboxylic acids or organic acids such as oxalic acid and citric acid. There is. The following are representative examples of the above-mentioned 7-minoboricarboxylic acid.

Ethylenediaminetetraacetic aciddiethylenetriaminepentaacetic acidpropylenediaminetetraacetic acidnitrilotriacetic acidiminodiacetic acid ethyl ether diaminetetraacetic acidethylenediaminetetrapropionic acidethylenediaminetetraacetic acid disodium saltdiethylenetriaminepentaacetic acid pentasodium saltnitrilotriacetic acid sodium saltBleaching solution contains various additives along with the above bleaching agents. When a bleach-fixing solution is used in the bleaching step, a solution containing a silver halide fixing agent in addition to the bleaching agent is used. Further, the bleach-fix solution may further contain a halogen compound such as potassium bromide. As in the case of the above-mentioned bleach solution, various other additives such as jfPH buffer, optical brightener, antifoaming agent, surfactant, preservative, chelating agent, stabilizer, organic solvent, etc. addition,
It may be included.

Examples of silver halide fixing agents include sodium thiosulfate, ammonium periosulfate, sodium thiosulfate,
Mention may be made of compounds which react with silver halides to form water-soluble silver salts, such as sodium thiocyanate, or 1,000 ureas, thioethers and the like used in conventional fixing processes.

Color development of the silver halide color photographic light-sensitive material of the present invention,
The processing temperature of bleach-fixing (or bleaching, fixing), and various processing steps such as washing with water, stabilization, and drying, which are carried out as necessary, is preferably carried out at 30° C. or higher from the viewpoint of rapid processing.

The silver halide color photographic light-sensitive material of the present invention is disclosed in Japanese Unexamined Patent Publication No. 58
- No. 14834, No. 58-105145, No. 5B-1
No. 34634 and No. 58-18631 and patent application 1973
A stabilizing treatment as an alternative to washing may be performed as shown in Japanese Patent No. 8-2709 and Japanese Patent No. 59-89288.

[Effects of the Invention] According to the silver halide color photographic light-sensitive material of the present invention, at least one of the photographic constituent layers contains a DIR compound, and the blue-sensitive silver halide emulsion layer contains a fast-reactive yellow coupler. Because it is characterized by containing at least one of the following, it has good color reproducibility and high image sharpness,
Furthermore, the occurrence of fog can be suppressed.

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

Example 1 Silver halide color photographic light-sensitive material samples No. 1 were prepared by sequentially coating the following layers on a paper support laminated on both sides with polyethylene from the support side.

Layer 1 @--1.2g/rn'' gelatin, 0.32
g/m' (in terms of silver, the same applies hereinafter) blue-sensitive silver chlorobromide emulsion (
layer containing 0.80 g/m'' yellow coupler (YY-1) dissolved in 0.50 g/nf dioctyl phthalate (silver bromide content 80 mol%).

Layer 2...0.70g/rr1'' gelatin, 12wg
/rn' anti-irradiation dye (AI-1) and flag/m' (A 1-2).

fi3 --- 1.25g/rf gelati 7, 0.
25 g/m” green-sensitive silver chlorobromide emulsion (silver bromide content 7
0.82 g/m'' of magenta coupler (MM
-1) and 0.03 g/m'' of the exemplary compound (D-84
).

Layer 4: Intermediate layer consisting of gelatin of 1.20 g/rrf.

5. Gelatin of 111.20g/rrIt, 0.
A red-sensitive silver chlorobromide emulsion (silver bromide content 70 mol %) of 30 g/rn', an exemplary compound of cyan coupler (C-2 ).

Layer 6・φ・1.00g/go gelatin and 0.20g
0.30 g/m dissolved in dioctyl phthalate of /go
A layer containing an ultraviolet absorber (UV-1).

Layer 70: A layer containing 0.50 g/rn' of gelatin.

(YY -1) (MM-1) t t (AI-1) (AI-2) (UV-t) 0, l[,1(t) As a hardening agent, 2,4-dichloro-8 - Sodium hydroxy-s-triazine in M2.4 and 7,
Each was added in an amount of 0.017 g per Ig of gelatin.

In addition, Samples No. 2 to No. 4 were prepared in the same manner as Sample No. 1, except that the yellow coupler and DIR compound of Calendar 1 in Sample No. I were changed as shown in Table 1 below.
It was created.

Each of the photosensitive material samples Nos. 1 to 4 was exposed to white light and decomposed light through an optical wedge and an MTF value measurement wedge, and then processed in the following steps.

Processing process (38℃) Color development 3 minutes 30 seconds Bleach fixing 1 minute 30 seconds Wash with water 1 minute Drying 60-80℃ 2 minutes The composition of each treatment liquid is as follows.

[Color developer] Pure water 800ml benzyl alcohol 15ml sulfuric acid-resistant roxyamine 2.0g potassium bromide
1.5g sodium chloride
1.0g potassium sulfite
2.0g triethanolamine 2.0
gN-ethyl-N-β-methanesulfonamidoethyl-3-methyl-4-7 minoaniline sulfate 4.5g1-hydroxyethylidene-1,1-diphosphonic acid (80% aqueous solution)
1.5m potassium carbonate
32g WhitexBB (56% aqueous solution)
2m (fluorescent brightener, manufactured by Sumitomo Chemical Co., Ltd.) Add pure water to make 1 liter 20% potassium hydroxide or 10%
Adjust to p)I=10.1 with dilute sulfuric acid.

[Fixer B] Pure water 550ml Iron (III) ethylenediaminetetraacetate Ammonium 65g Ammonium thiosulfate 85g Sodium hydrogen sulfite 10g 77 Sodium bisulfite
2g ethylenediaminetetraacetic acid-disodium 20g sodium bromide 10g Add pure water to make one sentence, and add aqueous ammonia or dilute sulfuric acid to pl=
Adjust to 7.0.

Sensitometry was performed on each sample after the above treatment,
The maximum density (Dm) and fog (Fog) of the blue-sensitive silver halide emulsion layer were determined. Furthermore, the MTF (Modulati) of the green-sensitive silver halide emulsion layer.

Transfer Function) was determined using a microdensitometer, and the MTF values at a spatial frequency of 5 lines/lsm were compared. Note that the determination of image sharpness by MTF is well known among those skilled in the art, but rTbe
theor! of the photography
It is described in process 3rd editor J. Furthermore, the interimage effect was measured to examine color reproducibility. The magnitude of the interimage effect is determined by the ratio γB of the sensitometry of the dye image at the time of separation exposure to γW of the sensitometry corresponding to the dye image at the time of white light exposure [γB; Gamma (γ),
Comparison was made using γW; gamma (γ) of white exposure. The results are shown in Table 1.

As is clear from the results in Table 1 above, when a yellow coupler other than the present invention is included (Sample No. 1), an excessive interimage effect occurs when a DIR coupler is used in combination with the green-sensitive silver halide emulsion layer.

As a result, although a high maximum density cannot be obtained, the present invention (Samples Nos. 3 and 4) containing the fast-reacting yellow coupler of the present invention and containing a DIR compound has a moderate interimage effect and a wide sharpness. Not only is the improvement recognized, but it is also found that according to the present invention, the occurrence of fog is suppressed and a high maximum density can be obtained.

Claims (1)

[Claims] A silver halide color photographic light-sensitive material having photographic constituent layers including at least a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer on a reflective support, wherein the photograph At least one of the constituent layers
The layer contains at least one compound that releases a development-inhibiting substance or its precursor by reacting with an oxidized form of a color developing agent, and the blue-sensitive silver halide emulsion layer has a relative coupling reaction rate. A silver halide color photographic material containing at least one yellow coupler of 0.3 or more.