JPH0614179B2 - Silver halide color photosensitive material - Google Patents

Description

TECHNICAL FIELD The present invention relates to a silver halide color photographic light-sensitive material, and particularly to a silver halide color photographic light-sensitive material suitable for photography with improved graininess and sharpness. It is about.

(Prior Art) In recent years, high-sensitivity and small format silver halide color negative films have been developed, and a color negative photographic light-sensitive material having high sensitivity and excellent image quality is strongly desired.

In response to such demands, much research has been done centering on the improvement of silver halide emulsions.

For example, a technique for using tabular grains is disclosed in U.S. Pat. No. 5,698,698, which is intended to improve sensitivity including improvement of color sensitizing efficiency by a sensitizing dye, improve sensitivity / granularity relationship, improve sharpness, and improve covering power. 4434226 and 44143
10, same 4433048, same 4414306, same 445
9353.

In addition, JP-A-58-113930 and JP-A-58-1139.
No. 34, No. 59-119350, and each publication, a tabular silver halide emulsion having an aspect ratio of 8: 1 or more is used in a high-sensitivity layer to provide high sensitivity, graininess, sharpness, and color reproducibility. Has been disclosed for improved multilayer color photographic light-sensitive material.

Further, in JP-A No. 61-77847, a sharpness using a flat silver halide emulsion having an aspect ratio of 5: 1 or more in a high sensitivity layer and a monodispersed silver halide emulsion in a low sensitivity layer is disclosed. And a multilayer color photographic light-sensitive material having improved color reproducibility.

However, as a result of investigations by the present inventors, when a tabular silver halide emulsion was used in the high-sensitivity layer, particularly in the highest sensitivity layer of the blue light-sensitive layer, the graininess of the layer was practically satisfactory. I didn't reach the level. It is speculated that this is because the large sensitizing effect of the dye, which is a feature of tabular grains, is not sufficiently exhibited in the blue color-sensitive layer.

In order to achieve photographic properties such as high sensitivity, high contrast and excellent graininess, a monodisperse silver halide emulsion having a narrow grain size distribution as described in JP-A-52-153428 is advantageous. It has been known. Further, a core having a silver halide phase having a different composition inside the emulsion grain /
It is also possible to use shell-type emulsion grains so that the functions of the emulsion grains from light reception to image formation are separated as much as possible into the core and shell portions of the emulsion grains to improve the utilization efficiency of incident light. Is.

Furthermore, it is considered preferable to narrow the distribution of halogen composition between grains in order to obtain a high-contrast emulsion.

However, the monodisperse silver halide emulsion has a large light scattering depending on its size, and particularly when the low-sensitivity layer is composed of the monodisperse emulsion, the light scattering causes the sharpness to be a level which cannot be practically satisfied.

(Problems to be Solved by the Invention) An object of the present invention is to provide a silver halide color light-sensitive material having high sensitivity and good graininess and sharpness.

(Means for Solving Problems) An object of the present invention is to provide at least a blue light-sensitive layer in a silver halide photographic light-sensitive material which has blue, green and red light-sensitive layers on a support and can form a multicolor image. Is composed of at least two layers of a high-sensitivity layer and a low-sensitivity layer, and the highest-sensitivity layer of the blue-sensitive layer contains an emulsion of substantially monodisperse regular crystal silver halide grains, and It can be achieved by a silver halide photographic light-sensitive material containing an emulsion composed of silver halide grains having an average aspect ratio of 5: 1 or more in at least one layer other than the highest sensitivity layer, a green light-sensitive layer or a red light-sensitive layer.

The silver halide photographic light-sensitive material of the present invention has a multilayer structure in which emulsion layers containing a binder for separately recording blue light, green light and red light and silver halide grains are superposed, and at least one of the emulsion layers is Consists of a high sensitivity layer and a low sensitivity layer. The following are examples of particularly practical layer configurations.

(1) BH / BL / GH / GL / RH / RL / S (2) BH / BL / GH / RH / GL / RL / S (3) BH / BM / BL / GH / GM / GL / RH / RM
/ RL / S (4) BH / GH / RH / BL / GL / RL / S (5) BH / BL / GH / RH / GM / GL / RM / RL
/ S where B is a blue-sensitive layer, G is a green-sensitive layer, R is a red-sensitive layer, H is a highest sensitivity layer, M is an intermediate layer, L is a low sensitivity layer, and S is a support, The description of the non-photosensitive layers such as the protective layer, the filter layer, the intermediate layer, the antihalation layer and the undercoat layer is omitted. Of these, the particularly preferred layer structure is (1) or
(3).

In the case of the layer constitution (1), monodisperse silver halide grains (hereinafter abbreviated as "monodisperse grains") are used for BH, and tabular silver halide grains having an average aspect ratio of 5: 1 or more for other layers. (Hereinafter abbreviated as “tabular grains”) is used. BL is particularly preferable for the layer using tabular silver halide grains, and it is more preferable to use it also for GH and / or GL.

In the case of the layer structure of (1), the preferable combination of emulsions is as follows.

In the case of the layer structure of (1), a more desirable combination of emulsions is
It is as follows.

In either case, it is desirable not to use tabular grains for RH and RL.

In the case of the layer construction of (3), the desirable emulsion combinations are as follows.

In the case of the layer construction of (3), more desirable combinations of emulsions are as follows.

When the film thickness between the support and the emulsion layer farthest from the support is divided into two parts, and the region far from the support is defined as region A and the near one is defined as region B, the emulsion layer farthest from the support is It is desirable that the blue-sensitive highest sensitivity layer contains monodisperse grains, at least one layer containing tabular grains in the region A, and at least one layer containing monodisperse grains in the region B. More preferably, the emulsion layer far away from the support is composed of monodisperse grains, the region A is composed entirely of layers containing tabular grains and the region B is composed entirely of layers containing monodisperse grains.

The light scattering properties of emulsion grains generally depend on their grain size and size distribution, shape, halogen composition and the like. When the grain size distribution is monodisperse, the light scattering by the emulsion grains becomes relatively small when the average size is larger than 0.8 μm. In the emulsion layer farthest from the support (corresponding to BH in a normal color negative photosensitive material), grains having an average grain size of 0.8 μm or more are often used, so that the distribution is uniform and light scattering easily occurs. It is advantageous in terms of sharpness to use monodisperse particles which do not contain small-sized particles of 0.8 μm or less. BH is a layer that makes a large contribution to graininess,
Monodisperse particles having excellent granularity are preferred. Further, in the area A, it is advantageous in terms of sharpness to use tabular grains with little light scattering even if the average grain size is 0.8 μm or less. On the other hand, when tabular grains are used in the region B, the low frequency MTF becomes small and the sharpness deteriorates. This is a phenomenon in which the tabular grain has a small scattering probability for light incident perpendicularly to two parallel planes forming the tabular grain, but the scattering probability increases conversely as the incident angle deviates from vertical. In the region A in which the ratio of straight light is large, the tabular grains have a smaller light scattering probability, but in the region B in which the ratio of diffused light is higher due to scattering in the upper layer, the tabular grains are larger than the non-tabular grains. Rather, it is presumed that this is because the light scattering probability increases. Therefore, it is desirable to use monodisperse grains in the region B without using tabular grains and avoiding the grain size region where light scattering is as large as possible.

In particular, these effects were synergistically increased by the combination, and the effects of the present invention were beyond expectations.

In the silver halide photographic light-sensitive material of the present invention, the most sensitive layer of the blue light-sensitive layer contains an emulsion composed of silver halide grains which are substantially monodisperse.

In the present invention, the monodispersed silver halide grains mean that the weight of silver halide grains contained within a grain size range of ± 20% around the average grain size is 60% of the weight of silver halide grains.
% Or more, preferably 70% or more, particularly preferably 80% or more.

Here, the average particle diameter, the frequency of the particles having a particle size gamma ⁱ n ⁱ
The grain size r ⁱ is defined when the product n ⁱ × γ ^{i3 of} γ ⁱ³ and γ ⁱ³ becomes maximum.

(3 significant digits, rounding down to the least significant digit is rounded off.) The grain size referred to here is the diameter of a spherical silver halide grain, or the diameter of a grain other than a spherical grain. It has an equivalent diameter.

The silver halide grains used in the highest sensitivity layer of the blue light-sensitive layer of the present invention are preferably core / shell type emulsions. As a method for obtaining an emulsion composed of core / shell type normal crystals,
It can be obtained by adding a water-soluble silver salt solution and a water-soluble halide solution to a gelatin solution containing seed grains which are normal crystals by the double jet method under the control of pAg and pH. To determine the addition rate, see JP-A-54-4
Reference can be made to 8521 and 58-49938.

The method for producing an emulsion consisting of twin crystals of the core / shell type is as follows.
For example, JP-A-54-118823 can be referred to. These methods are characterized by forming a silver iodide nucleus in the initial stage and then adding a water-soluble silver salt and a water-soluble halide solution to cause a conversion reaction to form a core made of silver iodobromide.

The core / shell type twin crystal emulsion is produced by ripening a multi-twin crystal nuclei emulsion in the presence of a silver halide solvent to obtain a monodisperse spherical seed emulsion, which is then grown by the double jet method. You can also get

The silver halide grains for the high-sensitivity layer preferably used in the present invention have a grain structure composed of two or more layers having different silver iodide contents, and among the two or more layers, The silver iodide content in the outermost surface layer (shell portion) is preferably lower than that in the inner layer (core portion). The silver iodide content of the core is 5 to 4
Although 0 mol% can be used, it is preferably 15 to 40 mol%, more preferably 25 to 40 mol%. The silver iodide content of the shell portion is less than 5 mol%, preferably 0.5 to 4.0 mol%.

In the present invention, the difference in content between the core portion having a high silver iodide content and the shell portion having a low content of the silver halide grains may have a sharp boundary, and the boundary is not always clear and continuous. It may change. As a method of continuously changing the halogen composition of the boundary between the core and the shell, a method of gradually changing the composition of the added halide solution in the double jet method can be used. Further, the silver iodide composition in the core portion and the shell portion may be unevenly distributed.

Further, the proportion of the shell portion of the core / shell type silver halide grains is 10 to 80%, preferably 15 to 70%,
It is more preferably 20 to 60%.

In the present invention, the silver halide for the high sensitivity layer is silver bromide.
Although silver iodide and silver iodobromide can be used, silver iodobromide is particularly preferable, and a small amount of silver chloride is acceptable as long as the photographic performance of the emulsion is not impaired.

The monodisperse emulsion of the present invention can be obtained, for example, from European Patent No. 14
The relative standard deviation of the silver iodide content of each grain measured by the method described in No. 7,868A is 20% or less, and more preferably the relative standard deviation is 12% or less.

The substantially monodisperse regular crystal silver halide grains of the present invention may be grains such as cubes, tetrahedra and octahedra, and mixtures thereof, but octahedra are particularly preferred.

The average particle size of the monodisperse silver halide grains used in the highest sensitivity layer of the blue light-sensitive layer of the present invention is 0.6 in terms of graininess and sharpness.
It is preferably at least μm, and most preferably 0.8 μm to 1.8 μm.

In the silver halide photographic light-sensitive material of the present invention, at least one of the blue light-sensitive layer other than the highest sensitivity layer, the green light-sensitive layer and the blue light-sensitive layer has an average aspect ratio of 5: 1.
The emulsion has tabular silver halide grains as described above. At least the low-sensitivity layer of the blue light-sensitive layer preferably contains an emulsion comprising such tabular silver halide grains. Aspect ratio refers to the ratio of particle diameter: thickness.
Here, the diameter of a silver halide grain means the diameter of a circle having an area equal to the projected area of the grain. The silver halide grain (tabular silver halide grain) specified by the above aspect ratio used in the present invention has an aspect ratio of 5 or more, preferably 1 or more.
00 or less, more preferably 5 or more and 50 or less, and particularly preferably 5 or more and 20 or less.

In the present invention, the tabular silver halide grains have a diameter of 0.5.
˜15.0 μm, preferably 1.0 to 10.0 μm.

In the layer containing tabular silver halide grains of the present invention, it is preferred that the tabular grains are present in an amount of 40% or more, particularly 60% or more, based on the total weight of silver halide grains in the layer.

When the tabular grains used in the present invention are not sensitized by epitaxially growing different kinds of silver salts on the surface thereof, the halogen composition of the tabular silver halide grains is silver bromide or silver iodobromide. The silver iodobromide having a silver iodide content of 0 to 15 mol% is more preferable.

Particularly preferred is silver iodobromide.

A particularly preferable silver iodide content is 4 to 10 mol%.

Further, the tabular silver iodobromide grain has first and second parallel main surfaces facing each other and a central region extending between the two main surfaces, and at least one lateral surface extending between the two main surfaces. A grain internal structure having an outer region displacing in a direction (direction parallel to the main surface) and having different iodide content in the central region and iodide content in the outer region is preferable. Of these, more preferred are those having an internal grain structure in which the iodide content in the outer region is lower than the iodide content in the central region. Also, preferably, the outer region has a composition distribution that surrounds the central region so as to form a ring in the lateral direction. The transition of the iodide content in the boundary layer between the central region and the outer region may have a sharp boundary surface, or may have a boundary which is not necessarily obvious but continuously changes.

As a method for producing tabular grains having a halogen composition distribution as described above, there are disclosed in JP-A-52-15428 and JP-A-5-15428.
4-118823, 58-113927, 59.
The production method described in, for example, -99433 can be referred to.

The tabular silver halide grains according to the present invention may be polydisperse or monodisperse, but are preferably monodisperse.

Further, as a preferable method for obtaining an emulsion composed of monodisperse tabular grains, core grains composed of multiple twins are aged in the presence of a silver halide solvent to form a seed population composed of monodisperse spherical grains. After that, a method of growing it can be used. As a more preferable method, a tetrazaindene compound may be present during the growth of tabular grains to increase the ratio of tabular grains and improve monodispersity.

When the tabular silver halide grain used in the present invention is sensitized by epitaxially growing different kinds of silver halide on the surface thereof, the tabular crystal described above can be used as it is as a host crystal. Tabular grains composed of silver halide can also be used as host crystals. Silver bromide, silver chloride, or silver chlorobromide can be used as the silver halide used for the epitaxial growth, and silver bromide is particularly preferable. Further, the silver halide in the epitaxial growth portion may contain silver iodide in an amount of 5 mol% or less.

In the tabular epitaxial silver halide used in the present invention, the proportion occupied by the epitaxial crystals is preferably 5 to 30 mol% and more preferably 10 to 20 mol% based on the total number of silver halide mols.

The epitaxial growth of the epitaxial tabular silver halide used in the present invention is preferably carried out selectively at a limited site on the surface of the silver halide, and examples thereof include edges, corners, and annular sites. Such a silver halide emulsion is disclosed in JP-A-58-108.
No. 526, No. 59-119350, No. 59-1335.
It can be obtained by using the method of JP-A-40.

In the photographic emulsion layer of the photographic light-sensitive material used in the present invention, any silver halide of silver bromide, silver iodobromide, silver iodochlorobromide, silver chlorobromide and silver chloride is used in addition to the above-mentioned emulsion. You may use. A preferred silver halide is silver iodobromide or silver iodochlorobromide containing about 30 mol% or less of silver iodide. Particularly preferred is silver iodobromide containing from about 2 mol% to about 25 mol% silver iodide.

The silver halide grains in the photographic emulsion may be so-called regular grains having regular crystal bodies such as cubes, octahedra and tetradecahedrons, and those having an irregular crystal shape such as spheres, It may have a crystal defect such as a twin plane or a composite form thereof.

The grain size of the silver halide may be fine grains of about 0.1 micron or less, or large grains with a projected area diameter of up to about 10 microns, a monodisperse emulsion having a narrow distribution, or a polydisperse grain having a wide distribution. It may be an emulsion.

The silver halide photographic emulsion which can be used in the present invention can be produced by a known method, for example, Research Disclosure (RD), No. 17643 (December 1978), 22.
Pp. 23, "I. Emulsion preparation and
types) ”and ibid., No. 18716 (11 November 1979)
Mon.), page 648.

The photographic emulsion used in the present invention is described in "Physics and Chemistry of Photography" by Graphide, published by Paul Montel (P.Glafkides, Chim.
ie et Physique Photograhique Paul Montel. 196
7), “Photoemulsion Chemistry” by Duffin, published by Forcal Press, Inc. (GF Duffin, Photograhic Emulsion Chemistr
y (Focal Press, 1966), "Production and Coating of Photographic Emulsions" by Zelikmann et al., published by Focal Press (VL Zeli).
kman et al. Making and Coating Photographic Emulsio
n, Focal Press, 1964) and the like. That is, the acidic method, the neutral method,
Any method such as the ammonia method may be used, and the method of reacting the soluble silver salt and the soluble halogen salt is a one-sided mixing method,
Any of the simultaneous mixing method and the combination thereof may be used. A method of forming grains in the presence of excess silver ions (so-called reverse mixing method) can also be used. As one type of the simultaneous mixing method, a method of keeping pAg in a liquid phase where silver halide is formed constant, that is, a so-called controlled double jet method can be used. According to this method, a silver halide emulsion having a regulated crystal form and a substantially uniform grain size can be obtained.

Two or more kinds of silver halide emulsions formed separately may be mixed and used.

The silver halide emulsion composed of the regular grains can be obtained by controlling the pAg and pH during grain formation.
For details, see, for example, Photographic Science and Eng.
ineering) Volume 6, 159-165 (1962); Journal of Photographic Science (Jour)
nal of Photographic Science), Volume 12, 242-2
51 (1964), U.S. Pat. No. 3,655,394 and British Pat. No. 1,413,748.

The emulsion of the present invention is usually used after physical ripening, chemical ripening and spectral sensitization. Additives used in such processes are Research Disclosure No. 176.
43 and ibid. No. 18716, the relevant parts are summarized in the table below.

Known photographic additives that can be used in the present invention are also described in the above two Research Disclosures, and the locations thereof are shown in the table below.

The dye of the following general formula (I) can be used in the blue photosensitive layer. Especially when tabular grains are used in the blue photosensitive layer, it is preferable to use these dyes.

General formula (I) (In the formula, Z ₁ and Z ₂ are a thiazole ring, a benzothiazole ring, a naphthothiazole ring, a selenazole ring,
It represents a group of atoms necessary for completing a benzoselenazole ring, a naphthoselenazole ring, an imidazole ring, a benzimidazole ring, a naphthimidazole ring, an oxazole ring, a benzoxazole ring, a naphthoxazole ring, a pyridine ring, or a quinoline ring.

At least one of R ₁ and R ₂ represents an alkyl group having one carboxyl group or a sulfo group, when one of R ₁ and R ₂ is an alkyl group having a carboxyl group or a sulfo group, the other One represents an alkyl group.

X Represents an anion, and n represents 1 or 2. Well
The sensitizing dye represented by the general formula (I) forms an inner salt.
N represents 1. ) Examples of particularly preferable compounds include the following dyes.
It

The amount of dye used is 5 × 10 ⁻⁵ to 2 per mol of silver halide.
× 10 ^-3 mol is preferable, and 2 × 10 ^{-4 to} 7 × 10 ^-4 mol is particularly preferable.

Various color couplers can be used in the present invention, and specific examples thereof are described in the patents described in Research Disclosure (RD) No. 17643, VII-CG. As the dye-forming coupler, a coupler which gives the three primary colors (that is, yellow, magenta and cyan) of the subtractive color method by color development is important, and specific examples of the diffusion resistant 4-equivalent or 2-equivalent coupler are described in the above RD1.
In addition to the couplers described in the patents described in 7643, VII-C and D, the following can be preferably used in the present invention.

A typical example of the yellow coupler that can be used in the present invention is a hydrophobic acylacetamide coupler having a ballast group. A specific example is US Pat. No. 2,
No. 407,210, No. 2,875,057 and No. 3,265,506. In the present invention, it is preferable to use a two-equivalent yellow coupler, and US Pat. Nos. 3,408,194 and 3,447,928 are preferred.
No. 3,933,501 and No. 4,022.
No. 620 and other yellow couplers of oxygen atom elimination type or Japanese Patent Publication No. 58-10739, U.S. Pat. Nos. 4,401,752, 4,326,024, R
D18053 (April 1979), US Pat. No. 1,42
No. 5,020, West German Application Publication No. 2,219,917,
Typical examples thereof include nitrogen atom releasing yellow couplers described in Nos. 2,261,361, 2,329,587 and 2,433,812. The α-pivaloyl acetanilide type coupler is excellent in the fastness of the color forming dye, especially the light fastness, while
The benzoylacetanilide coupler provides high color density.

Examples of magenta couplers that can be used in the present invention include hydrophobic indazolone or cyanoacetyl, preferably 5-pyrazolone and pyrazoloazole couplers having a ballast group. The 5-pyrazolo-based coupler is preferably a coupler in which the 3-position is substituted with an arylamino group or an acylamino group, from the viewpoint of the hue and color density of the color forming dye, and typical examples thereof are US Pat.
No. 11,082, No. 2,343,703, No. 2,
No. 600,788, No. 2,908,573, No. 3,062,653, No. 3,152,896 and No. 3,936,015. As the leaving group of the 2-equivalent 5-pyrazolone-based coupler, the nitrogen atom leaving group described in US Pat. No. 4,310,619 or the arylthio group described in US Pat. No. 4,351,897 is particularly preferable. European Patent No. 73,
The 5-pyrazolone-based coupler having a ballast group described in JP-A 636 can obtain a high color density. Pyrazoloazole couplers include pyrazolobenzimidazoles described in U.S. Pat. No. 3,061,432, preferably pyrazolo [5,1-c] [1] described in U.S. Pat. No. 3,725,067. , 2, 4] Triazoles, Research Disclosure 24220 (June 1984)
And the pyrazolotetrazoles and Research Disclosure 242 described in JP-A-60-33552.
30 (June 1984) and JP-A-60-43659.
And the pyrazolopyrazoles described in No. The imidazo [1,2] described in U.S. Pat. No. 4,500,630, in terms of low yellow sub-absorption of the coloring dye and light fastness.
-B] pyrazoles are preferred and are described in US Pat.
Pyrazolo [1,5-b] [1,
2,4] triazole is particularly preferred.

Cyan couplers that can be used in the present invention include hydrophobic and diffusion-resistant naphthol-based and phenol-based couplers. The naphthol-based couplers described in U.S. Pat. No. 2,474,293, preferably U.S. Pat. 052
No. 212, No. 4,146, 396, No. 4,22
Typical examples are the oxygen atom desorption type two-equivalent naphthol couplers described in JP-A-8,233 and JP-A-4,296,200. Further, specific examples of the phenol-based coupler are described in US Pat. Nos. 2,369,929 and 2,8.
01,171, 2,772,162, 2,
No. 895,826.

A coupler capable of forming a cyan dye which is fast against humidity and temperature is preferably used in the present invention, and a typical example thereof is ethyl at the meta position of the phenol nucleus described in US Pat. No. 3,772,002. Phenolic Cyan Coupler Having Alkyl Groups More than One Group, US Pat. No. 2,7
No. 72,162, No. 3,758,308, No. 4,
126,396, 4,334,011, 4,327,173, West German Patent Publication 3,329,7.
2,5-diacylamino-substituted phenol-based couplers described in U.S. Pat. No. 29, European Patent No. 121,365 and the like, U.S. Pat. Nos. 3,446,622 and 4,33.
3,999, 4,451,559 and 4,427,767, and the like, such as a phenolic coupler having a phenylureido group at the 2-position and an acylamino group at the 5-position. Is. European Patent No. 16
The cyan couplers described in JP-A No. 1,626A in which the 5-position of naphthol is substituted with a sulfonamide group, an amide group, etc. are also excellent in the fastness of a color image and can be preferably used in the present invention.

In order to correct the unnecessary absorption of the color forming dye, it is preferable to mask the color sensitive material for photographing with a colored coupler in combination. Yellow colored magenta couplers described in U.S. Pat. No. 4,163,670 and Japanese Patent Publication No. 57-39413 or U.S. Pat. No. 4,004,929.
No. 4,138,248 and British Patent No. 1,1.
Typical examples are magenta colored cyan couplers described in JP-A No. 46,368. Other colored couplers are described in RD17643, paragraphs VII-G above.

The graininess can be improved by using a coupler in which the color forming dye has an appropriate diffusibility. Such couplers are
U.S. Pat. No. 4,366,237 and British Patent No. 2,
Specific examples of magenta couplers are disclosed in 125,570, European Patent No. 96,570 and West German Patent Application Publication No. 3,2.
No. 34,533 describes specific examples of yellow, magenta or cyan couplers.

The dye-forming coupler and the above-mentioned special coupler may form a dimer or higher polymer. Typical examples of polymerized dye forming couplers are found in US Pat. No. 3,451,82.
0 and 4,080,211. Specific examples of polymerized magenta couplers are described in British Patent No. 2,102,173 and US Patent No. 4,367,
282.

Couplers that release a photographically useful residue upon coupling are also preferably used in the present invention. The DIR coupler releasing the development inhibitor is RD17643, VI described above.
The couplers of the patents described in paragraphs I-F are useful.

A preferred combination with the present invention is JP-A-57-
No. 151944, a developer inactivating type; U.S. Pat. No. 4,248,962 and JP-A-57-154234.
Timing type represented by the Japanese Patent No. 59-39653
No. 57-151944, JP-A No. 58-217932 and JP-A Nos.
Developer inactivating DIR couplers described in Japanese Patent Application Nos. 59-75474, 59-82214, 59-82214 and 59-90438, and Japanese Patent Application No. 59-75438.
It is a reactive DIR coupler described in JP-A-39653 and the like. In order to emphasize the effect of improving the sharpness by the combination of tabular grains and monodisperse grains of the present invention, for example, JP-A-57-
A DIR coupler having a timing type and a large diffusibility of a leaving group as described in 56837 is particularly desirable.

In the light-sensitive material of the present invention, a coupler capable of releasing a nucleating agent or a development accelerator or a precursor thereof imagewise during development can be used. Specific examples of such compounds include British Patent Nos. 2,097,140 and 2,13.
No. 1,188. A coupler which releases a nucleating agent having an adsorbing action on silver halide is particularly preferable, and specific examples thereof are disclosed in JP-A-59-1576.
38 and 59-170840.

The coupler used in the present invention can be introduced into the light-sensitive material by various known dispersion methods, for example, a solid dispersion method, an alkali dispersion method, preferably a latex dispersion method, and more preferably an oil-in-water dispersion method, etc. are typical examples. be able to. In the oil-in-water dispersion method, after dissolving in either a single liquid of a high boiling organic solvent having a boiling point of 175 ° C. or higher and a so-called auxiliary solvent having a low boiling point or a mixed liquid of both, water or gelatin is added in the presence of a surfactant. Finely dispersed in an aqueous medium such as an aqueous solution. Examples of high boiling organic solvents are US Pat. No. 2,32
2, 027 and the like. The dispersion may be accompanied by phase inversion, and if necessary, the auxiliary solvent may be removed or reduced by distillation, washing with noodles or ultrafiltration, and then used for coating.

The steps of latex dispersion method, effects, and specific examples of latex for impregnation are described in US Pat. No. 4,199,363, West German Patent Application (OLS) Nos. 2,541,274 and 2,541,230. It is described in.

Suitable supports which can be used in the present invention are, for example, those described above in R.
D. No. 17643, page 28, and No. 18716, page 647, right column to page 648, left column.

The color photographic light-sensitive material according to the present invention has the above-mentioned RD, N
o.17643, pages 28-29 and ibid., No. 18716.
No. 651 left column to right column can be developed by a usual method.

The color developing solution used for the development processing of the light-sensitive material of the present invention is preferably an alkaline aqueous solution containing an aromatic primary amine type color developing agent as a main component. As the color developing agent, an aminophenol compound is also useful, but a p-phenylenediamine compound is preferably used, and typical examples thereof include 3-methyl-4-amino-N, N-diethylaniline and 3-methyl. -4-amino-N-ethyl-N-
β-hydroxylethylaniline, 3-methyl-4-amino-N-ethyl-N-β-methanesulfonamidoethylaniline, 3-methyl-4-amino-N-ethyl-N
-Β-methoxyethylaniline and sulfates thereof,
Hydrochloride or p-toluene sulfonic acid salt etc. are mentioned. Salts of these diamines are generally more stable than those in the free state, and are preferably used.

The color developing solution is a pH buffering agent such as an alkali metal carbonate, borate or phosphate, a development inhibitor such as a bromide, an iodide, a benzimidazole, a benzothiazole or a mercapto compound, or an antifoggant. Etc. are generally included. If necessary, preservatives such as hydroxylamine or sulfite, organic solvents such as triethanolamine and diethylene glycol, benzyl alcohol, polyethylene glycol, quaternary ammonium salts, development accelerators such as amines, and dyes. Forming couplers, competing couplers, nucleating agents such as sodium boron hydride, auxiliary developing agents such as 1-phenyl-3-pyrazolidone, tackifiers, aminopolycarboxylic acids,
Various chelating agents typified by aminopolyphosphonic acid, alkylphosphonic acid, and phosphonocarboxylic acid, and antioxidants described in West German Patent Application (OLS) No. 2,622,950 are added to the color developer. May be.

In the development processing of a reversal color light-sensitive material, black and white development is usually performed before color development. This black and white developer contains dihydroxybenzenes such as hydroquinone, 1-phenyl-
3-pyrazolidones such as 3-pyrazolidone or N-
Known black-and-white developing agents such as aminophenols such as methyl-p-aminophenol can be used alone or in combination.

The photographic emulsion layer after color development is usually bleached. The bleaching process may be performed at the same time as the fixing process, or may be performed on the spot. Further, in order to speed up the process, a bleach-fixing process may be performed after the bleaching process. Examples of bleaching agents include iron (III), cobalt (III), chromium (VI), copper (II)
Compounds of polyvalent metals such as, peracids, quinones, and nitrone compounds are used. Phelicyanide as a typical bleaching agent; dichromate; iron (III) or cobalt (III)
Complex salts of amino acid such as ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, nitrilotriacetic acid, 1,3-diamino-2-propanoltetraacetic acid, or organic acids such as citric acid, tartaric acid, malic acid; A salt; a manganate; a nitrosofer or the like can be used. Of these, ethylenediaminetetraacetic acid iron (III) salt, diethylenetriamine iron pentaacetate
(III) Salt and persulfate are preferable from the viewpoint of rapid treatment and environmental pollution. Further, the ethylenediaminetetraacetic acid iron (III) complex salt is particularly useful in both the independent bleaching solution and the one-bath bleach-fixing solution.

If necessary, a bleaching accelerator can be used in the bleaching solution, the bleach-fixing solution and their pre-bath. Specific examples of useful bleach accelerators are described in the following specifications: US Pat. No. 3,893,858, West German Patent 1,290,8.
12, No. 2,059,988, JP-A-53-327.
No. 36, No. 53-57831, No. 37418, No. 5
No. 3-65732, No. 53-72623, No. 53-9
No. 5630, No. 53-95631, No. 53-1042
No. 32, No. 53-124424, No. 53-14162.
No. 3, No. 53-28426, Research Disclosure No. 17129 (July 1978), etc., and a compound having a mercapto group or a disulfide group;
Thiazolidine derivatives as described in JP-A-50-140129; JP-B-45-8506 and JP-A-52.
-20832, 53-32735, U.S. Pat. No. 3,706,561; thiourea derivatives; West German Patent 1,127,715; JP 58-16235; Iodides; West German. Patent Nos. 966,410 and 2,
Polyethylene oxides described in 748,430;
Polyamine compounds described in JP-B-45-8836; Others, JP-A-49-42434 and JP-A-49-59644
No. 53-94927, No. 54-35727, No. 55-26506 and No. 58-163940, and the iodine and bromine ions can also be used. Of these, compounds having a mercapto group or a disulfide group are preferable from the viewpoint of having a large accelerating effect, and particularly, US Pat.
893,858, West German Patent 1,290,812,
The compounds described in JP-A-53-95630 are preferred.
Further, the compounds described in US Pat. No. 4,552,834 are also preferable. These bleaching accelerators may be added to the light-sensitive material. These bleaching accelerators are particularly effective when bleach-fixing a color light-sensitive material for photography.

Examples of the fixing agent include thiosulfates, thiocyanates, thioether compounds thioureas, and a large amount of iodides, but thiosulfate is generally used. As the bleach-fixing solution and the preservative for the fixing solution, sulfite, bisulfite or carbonyl bisulfite adduct is preferable.

After bleach-fixing treatment or fixing treatment, washing treatment and stabilizing treatment are usually carried out. Various known compounds may be added to the washing process and the stabilizing process for the purpose of preventing precipitation and saving water. For example, in order to prevent precipitation, hard water softeners such as inorganic phosphoric acid, aminopolycarboxylic acid, organic aminopolyphosphonic acid, organic phosphoric acid, bactericides and antibacterial agents that prevent the generation of various bacteria, algae and molds. An agent, a metal salt typified by a magnesium salt or an aluminum salt bismuth salt, a surfactant for preventing drying load or unevenness, and various hardeners can be added as necessary. Or West Photographic Science and Engineering magazine (LE West, Pho
t. Sci. Eng.), Volume 6, pages 344-359 (196)
The compounds described in 5) and the like may be added. It is particularly effective to add a chelating agent or an antifungal agent.

In the water washing step, it is common to carry out countercurrent water washing of two or more layers to save water. Furthermore, instead of the water washing step, JP-A-57 / 57
You may implement the multistage countercurrent stabilization treatment process as described in -8543. In the case of this step, a countercurrent bath of 2 to 9 tanks is required. In addition to the above-mentioned additives, various compounds are added to the stabilizing bath for the purpose of stabilizing an image. For example membrane pH
Buffers (for example, borate, metaborate, borax, phosphate, carbonate, potassium hydroxide, sodium hydroxide, ammonia water, etc.) for adjusting (for example, pH 3 to 9)
Representative examples include aldehydes such as monocarboxylic acids, dicarboxylic acids, and polycarboxylic acids used in combination) and formalin. In addition, if necessary, chelating agents (inorganic phosphoric acid, aminopolycarboxylic acid, organic phosphoric acid, organic phosphonic acid, aminopolyphosphonic acid, phosphonocarboxylic acid, etc.), bactericides (benzisothiazolinone, irithiazolone, 4- Thiazoline benzimidazole, halogenated phenol, sulfanilamide, benzotriazole, etc.), surfactants, optical brighteners, hardeners and other various additives may be used, and two or more of the same or different target compounds may be used. You may use together above.

Further, it is preferable to add various ammonium salts such as ammonium chloride, ammonium nitrate, ammonium sulfate, ammonium phosphate, ammonium sulfite, and ammonium thiosulfate as a film pH adjuster after the treatment.

Further, in the case of the color photosensitive material for photographing, the (washing-stabilizing) step after fixing which is usually performed can be replaced with the above-mentioned stabilizing step and the washing step (water saving processing). At this time, if the magenta coupler is 2 equivalents, the formalin in the stabilizing bath may be removed.

The washing and stabilizing treatment time of the present invention is usually 20 seconds to 10 minutes, preferably 20 seconds to 5 minutes, though it varies depending on the type of the photosensitive material and the processing conditions.

The silver halide color light-sensitive material of the present invention may contain a color developing agent for the purpose of simplifying and accelerating the processing. For incorporation, it is preferable to use various precursors of color developing agents. For example, US Pat. No. 3,34
Indoaniline compounds described in No. 2,597, No. 3,
342, 599, Research Disclosure 14
Schiff base type compounds described in 850 and 15159, aldol compounds described in 13924, metal salt complexes described in US Pat. No. 3,719,492, JP-A-53
Including urethane compounds described in JP-A-135628, JP-A-56-6235 and JP-A-56-16133,
56-59232, 56-67842, 56
No. 83734, No. 56-83735, No. 56-83
No. 736, No. 56-89735, No. 56-81837.
No. 56-54430, No. 56-106241,
Various salt type precursors described in JP-A-56-107236, JP-A-57-97531, JP-A-57-83565 and the like can be mentioned.

The silver halide color light-sensitive material of the present invention may contain various 1-phenyl-3-pyrazolidones in order to accelerate color development, if necessary. Typical compounds are JP-A-56-64339 and JP-A-57-144547.
No. 57-211147, No. 58-50532,
No. 58-50536, No. 58-50533, No. 58
-50534, 58-50535 and 58-
No. 115438.

Various treatment liquids in the present invention are used at 10 ° C to 50 ° C. A temperature of 33 ° C. to 38 ° C. is standard, but it is possible to increase the temperature to accelerate the processing to shorten the processing time, and to lower the temperature to improve the image quality and the stability of the processing liquid. it can. Further, in order to save silver in the light-sensitive material, processing using cobalt intensification or hydrogen peroxide intensification described in West German Patent No. 2,226,770 or US Pat. No. 3,674,499 may be performed.

If necessary, a heater, a temperature sensor, a liquid level sensor, a circulation pump, a filter, a floating pig, a squeegee, etc. may be provided in each treatment bath.

Further, in the case of continuous processing, a constant finish can be obtained by using a replenisher for each processing solution to prevent fluctuations in the liquid composition. The replenishment amount can be reduced to half or less than the standard replenishment amount for cost reduction.

(Examples) Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited thereto.

Example 1 On a subbed cellulose triacetate film support,
Multi-layer color light-sensitive materials 101 to 110 were produced by coating each layer having the following composition in multiple layers.

(Photosensitive Layer Composition) The numbers corresponding to the respective components indicate the coating amount expressed in g / m ² , and for silver halide, the coating amount in terms of silver. However, for the sensitizing dye and the coupler, the coating amount is shown in mol unit per mol of silver halide in the same layer.

1st layer; antihalation layer black colloidal silver ...... silver 0.18 gelatin ...... 1.40 second layer; intermediate layer 2,5-di-t-pentadecyl hydroquinone ...... 0 .18 C-1 ... 0.07 C-3 ... 0.02 U-1 ... 0.08 U-2 ... 0.08 HBS-1 ... 0.10 HBS-2 ... 0.02 gelatin ... 1.04 third layer; first red-sensitive emulsion layer silver iodobromide emulsion ... silver 0. 50 Sensitizing dye IX: 6.9 × 10 ⁻⁵ Sensitizing dye II: 1.8 × 10 ⁻⁵ Sensitizing dye III: 3.1 × 10 ⁻⁴ Sensitizing dye IV: 4.0 × 10 ⁻⁵ C-2: 0.146 HBS-1: 0.005 C-15: 0.0050 Gelatin: ... 1 20 fourth layer; sensitization second red-sensitive emulsion layer Silver iodobromide emulsion ----- silver 1.15 Dye IX ----- 5.1 × ^{10 -5} Sensitizing dye II ..... 1.4 × 10 ⁻⁵ Sensitizing dye III: 2.3 × 10 ⁻⁴ Sensitizing dye IV: 3.0 × 10 ⁻⁵ C-2: 0.060 C-3: 0.008 C-15: 0.004 HBS-1: 0.005 Gelatin: 1.50 Fifth layer: Third red sensation Emulsion layer Silver iodobromide emulsion: Silver 1.50 Sensitizing dye IX: 5.4 × 10 ⁻⁵ Sensitizing dye II: 1.4 × 10 ⁻⁵ Sensitizing dye Dye III: 2.4 × 10 ⁻⁴ Sensitizing Dye IV: 3.1 × 10 ⁻⁵ C-5: 0.012 C-3: 0 0.003 C-4 0.004 HBS-1 0.32 Zera 1.63 Sixth layer; Intermediate layer Gelatine 1.06 Seventh layer: First green emulsion layer Silver iodobromide emulsion Silver 0.35 Sensitization Dye V: 3.0 × 10 ⁻⁵ Sensitizing Dye VI: 1.0 × 10 ⁻⁴ Sensitizing Dye VII: 3.8 × 10 ⁻⁴ C-6 ... 0.120 C-1 ... 0.021 C-7 ... 0.030 C-8 ... 0.025 HBS-1 ... 0. 20 Gelatin: 0.70 Eighth layer: Second green-sensitive emulsion layer Silver iodobromide emulsion: Silver 0.75 Sensitizing dye V: 2.1 × 10 ⁻⁵ Sensitizing dye VI: 7.0 × 10 ⁻⁵ Sensitizing dye VII: 2.6 × 10 ⁻⁴ C-6: 0.021 C-8 -0.004 C-1 ... 0.002 C-7 ... 0. 03 HSB-1 ・ ・ ・ 0.15 Gelatin ・ ・ ・ 0.80 9th layer; 3rd green emulsion layer Silver iodobromide ・ ・ ・ ・ ・ Silver 1.80 Sensitizing dye V ・ ・・ ・ ・ 3.5 × 10 ^-5 sensitizing dye VI ・ ・ ・ 8.0 × 10 ^-5 sensitizing dye VII ・ ・ ・ 3.0 × 10 ^-4 C-6 ・ ・ ・0.011 C-1 0.001 HBS-2 0.69 Gelatin 1.74 10th tank; Yellow filter layer Yellow colloidal silver Silver 0.05 2,5-di-t-pentadecyl hydroquinone ... 0.03 gelatin ... 0.95 11th layer; 1st blue-sensitive emulsion layer; silver iodobromide emulsion ... Silver 0.24 Sensitizing dye VIII ・ ・ ・ 3.5 × 10 ^-4 C-9 ・ ・ ・ 0.27 C-8 ・ ・ ・ 0.005 HBS-1 ・ ・ ・ ・ ・0.2 Gelatin ..... 1.28 12th layer; sensitization second blue-sensitive emulsion layer Silver iodobromide emulsion ----- silver 0.45 Dye VIII ····· 2.1 × ^{10 -4} C -9 ... 0.098 HBS-1 ... 0.03 gelatin ... 0.46 13th layer; 3rd blue-sensitive emulsion layer Silver iodobromide emulsion ... Silver 0.77 Sensitizing dye VIII: 2.2 × 10 ⁻⁴ C-9: 0.036 HBS-1: 0.07 Gelatin: 0. 69 14th layer; 1st protective layer Silver iodobromide (silver iodide 1 mol%, average particle size 0.07 μ) ・ ・ ・ Silver 0.5 U-1 ・ ・ ・ ・ ・ 0.11 U- 2 ...... 0.17 HBS-1 ・ ・ ・ ・ ・ 0.90 Fifteenth layer; Second protective layer Polymethylmethacrylate particles (diameter about 1.5 μm) ・ ・ ・ ・ ・ 0.54 S -1 ... 0.1 The S-2 ----- 0.10 Gelatin ..... 0.72 each was added in addition to gelatin hardeners H-1 and surfactant of the composition.

Structures of compounds used in Examples U-1 C-1 U-2 C-2 C-3 C-4 C-5 C-6 C-7 C-8 C-9 C-10 C-11 C-12 C-13 C-14 C-15 S-1 S-2 HBS-1 tricresyl phosphate HBS-2 dibutyl phthalate HBS-3 tri-n-hexyl phosphate H-1 Sensitizing dye I II III IV V VI VII VIII IX Sensitizing dye X Each of the samples 101 to 110 was prepared by using the emulsions A to P having the contents shown in Table 1 as shown in Table 2.

The samples 101 to 110 thus obtained were treated with 4800
After uniform exposure for 1/100 seconds with white light of ° K 5 lux and the development processing described below, the graininess was evaluated by the RMS value obtained by measuring the micro density using an aperture of 48 µm.

In addition, as an evaluation of color image sharpness, MTF (Modulation Tr
Ansfer Function) was obtained, and the MTF values at 20 lines / mm were compared by relative values (the value of Comparative Sample 101 was 100).

[Treatment step] (38 ° C) Treatment time Color development 3 minutes 15 seconds Bleach 6 minutes 30 seconds Washing 2 minutes 10 seconds Fixing 4 minutes 20 seconds Washing 3 minutes 15 seconds Stability 1 minute 05 seconds The treatment liquid composition used in the treatment step is It was as follows.

Color developer Diethylenetriamine pentaacetic acid 1.0 g 1-Hydroxyethylidene-1,1-diphosphonic acid 2.0 g Sodium sulfite 4.0 g Potassium carbonate 30.0 g Potassium bromide 1.4 g Potassium iodide 1.3 mg Hydroxylamine sulfate 2 .4 g 4- (N-ethyl-N-β-hydroxyethylamino) -2-methylaniline sulfate 4.5 g Water was added to 1.0 pH 10.0 Bleaching solution Ethylenediaminetetraacetic acid ferric ammonium salt 100.0 g Ethylenediaminetetraacetic acid disodium salt 10.0 g Ammonium bromide 150.0 g Ammonium nitrate 10.0 g Water is added to 1.0 pH 6.0 Fixing solution Ethylenediaminetetraacetic acid disodium salt 1.0 g Sodium sulfite 4.0 g Ammonium thiosulfate aqueous solution (70%) 175.0m heavy sulfur dioxide Sodium acid 4.6 Add water 1.0 pH 6.6 Stabilizer Formalin (40%) 2.0 m Polyoxyethylene-p-monononyl phenyl ether (Average degree of polymerization 10) 0.3 g Add water 1 .0 As is clear from Table 3, the combined use of the silver halide emulsions of the present invention was found to have a remarkable improving effect on the sharpness and graininess. Sample 105 uses a flat plate for the high-sensitivity layer and a monodisperse emulsion for the low-sensitivity layer.
In the embodiment of No. 77847, the sample (for example, sample 106) of the present invention is superior to sample 105 in graininess and sharpness.

Example 2 On a subbed cellulose triacetate film support,
Multi-layer color light-sensitive materials 201 to 204 were produced by applying multiple layers having the compositions shown below.

(Photosensitive Layer Composition) The meanings and units of the numbers are the same as in Example 1.

First layer (antihalation layer) Black colloidal silver 0.2 Gelatin 1.0 Ultraviolet absorber UV-1 0.2 Dispersion oil OIL-1 0.02 Second layer (intermediate layer) Fine silver bromide (average particle size) 0.07 μ) 0.15 Gelatin 1.0 Third layer (first red-sensitive emulsion layer) Silver iodobromide emulsion 0.7 Gelatin 0.9 Sensitizing dye A 1.0 × 10 ⁻⁴ Sensitizing dye B 2 0.0 × 10 ⁻⁴ coupler C-21 0.3 coupler C-22 0.3 coupler C-23 0.2 coupler C-24 0.02 coupler C-25 0.01 dispersion oil OIL-1 0.1 dispersion Oil OIL-2 0.1 Fourth layer (second red-sensitive emulsion layer) Silver iodobromide emulsion 1.0 Gelatin 1.0 Sensitizing dye A 3 × 10 ⁻⁴ Sensitizing dye B 2 × 10 ⁻⁴ Coupler C -21 0.01 Coupler C-22 0.05 Coupler C-23 0.03 Puller C-26 0.01 Coupler C-27 0.02 Coupler C-28 0.02 Coupler C-29 0.02 Dispersion oil OIL-2 0.1 Fifth layer (intermediate layer) Gelatin 1.0 Compound Cpd- A 0.05 Dispersion oil OIL-2 0.05 Sixth layer (first green-sensitive emulsion layer) Silver iodobromide emulsion 0.6 Gelatin 1.0 Sensitizing dye C 3 × 10 ⁻⁴ Sensitizing dye D 2 × 10 ^-4 coupler C-30 0.4 coupler C-31 0.1 coupler C-32 0.02 coupler C-36 0.01 dispersed oil OIL-2 0.05 seventh layer (second green-sensitive layer) iodine Silver bromide emulsion 0.9 Gelatin 0.9 Sensitizing dye C 2 × 10 ⁻⁴ Sensitizing dye D 1.5 × 10 ⁻⁴ Coupler C-32 0.08 Coupler C-34 0.05 Dispersion oil OIL-1 0.08 dispersed oil OIL-3 0.03 8th layer ( Middle layer) Gelatin 1.2 Compound Cpd-A 0.6 Dispersion oil OIL-1 0.3 Ninth layer (yellow filter layer) Yellow colloidal silver 0.2 Gelatin 0.8 Compound Cpd-A 0.2 Dispersion oil OIL -1 0.1 Tenth layer (first blue-sensitive emulsion layer) Silver iodobromide emulsion 0.8 Gelatin 1.0 Sensitizing dye E ^{3x10 -4} Sensitizing dye F ^{3x10 -4} Coupler C-35 0.9 Coupler C-36 0.05 Dispersion oil OIL-3 0.01 11th layer (second blue sensitive emulsion layer) Silver iodobromide emulsion 0.5 Gelatin 0.5 Sensitizing dye E 1 × 10 ^-4 Sensitizing dye F 1 × 10 ⁻⁴ Coupler C-35 0.2 Coupler C-36 0.05 Dispersion oil OIL-3 0.01 12th layer (first protective layer) Gelatin 0.5 Coupler C-36 0. 1 UV absorber UV-2 0.1 UV absorber UV -3 0.2 Dispersed oil OIL-3 0.01 13th layer (second protective layer) Fine grain silver bromide emulsion (average grain size 0.07μ) 0.25 Gelatin 0.5 Polymethylmethacrylate grain (diameter 1. 5 μ) 0.2 Formaldehyde scavenger S-1; 0.5 Other surfactant W-1 and hardener H-1 were added.

Sensitizing dye A Sensitizing dye B Same as above C Same as above D Sensitizing dye E Same as above F Coupler C-21 Coupler C-22 Coupler C-23 Coupler C-24 Coupler C-25 Coupler C-26 Coupler C-27 Coupler C-28 Coupler C-29 Coupler C-30 Coupler C-31 Coupler C-32 Coupler C-33 Coupler C-34 Coupler C-35 Coupler C-36 Surfactant W-1 Formalin Scavenger S-1 Dispersion oil OIL-1 Same as above OIL-2 Same as above OIL-3 UV absorber UV-1 Same as above UV-2 Same as UV-3 Compound CpdA Samples 201 to 204 were prepared by using the emulsions a to k having the contents shown in Table 4 as shown in Table 5. The film thickness of each layer is as shown in Table 6.

These samples were exposed by the same method as described in Example 1, and then subjected to the development processing described below, and the RMS value and MTF value thereof were measured. However, the exposure of the RMS measurement sample was changed to 2 lux. The measurement results are shown in Table 7.

<Development processing step> Development processing was performed at 38 ° C according to the following processing steps.

Color development 3 minutes 15 seconds Bleach fixing 1 minute to 15 seconds Rinse 2 minutes Stability 40 seconds The composition of the processing liquid used in each step was as follows.

Color developer Diethylenetriaminepentaacetic acid 1.0 g 1-Hydroxyethylidene-1,1, disphonic acid 2.0 g Sodium sulfite 4.0 g Potassium carbonate 30.0 g Potassium bromide 1.4 g Potassium iodide 1.3 mg Hydroxylamine sulfate 2 .4 g 4- (N-ethyl-N-β-hydroxyethylamino) -2-methylaniline sulfate 4.5 g Water was added to 1.0 pH 10.0 Bleach-fixing solution Ethylenediaminetetraacetic acid / ferric ammonium salt 100.0 g Ethylenediaminetetraacetic acid disodium dihydrate 5.0 g Sodium sulfite 10.0 g Ammonium thiosulfate aqueous solution (70%) 220.0 m Add water 1.0 pH 6.9 Rinse water 1.0 Ethylenediamine tetra Acetic acid disodium salt 0.2g Sulfanilamide 0.2g Stabilizer Forma (37% W / V) 2.0 m Polyoxyethylene-p-monononylphenyl ether (average degree of polymerization 10) 0.3 g Water was added 1 As is clear from Table 7, the sample 202 of the present invention was For example, sample 20 which is an embodiment of JP-A-61-177847.
Better graininess and sharpness than No. 1. Moreover, the sample 203 not using tabular grains has a particularly large MTF at a low frequency and is superior in sharpness to the sample 202 using tabular grains in the layer close to the support. Furthermore, the sample 204 in which the monodisperse particles are not used in the layer in the region close to the support is inferior in granularity to the sample using the monodisperse particles, for example, 203.

Example 3 The sample 201 of Example 2 includes the sixth layer, the tenth layer, and the first layer.
Sample 301 was prepared in which one layer of coupler C-36 was replaced with coupler C-33 in equimolar amounts. Further, in the sample 202 of Example 2, couplers C-36 of the sixth layer, the tenth layer and the eleventh layer were respectively equimolar, and the coupler C was used.
A sample 302 in which -33 was substituted was prepared.

Samples 201, 301, 202 and 302 were exposed and developed in the same manner as described in the examples, and their MTFs were obtained.
The value was measured. The measurement results are shown in Table 8.

As is clear from Table 8, Sample 20 using DIR coupler C-36 which is a timing type and has a large diffusibility of the leaving group
1 is superior in sharpness to the sample 301 using C-33, and the sample 202 also shows an MTF value superior to that of the sample 302. The effect of improving the sharpness according to the present invention is D
It can be seen that it is more remarkable in the sample using the IR coupler C-36.

Example 4 Multilayer color light-sensitive materials 401 to 403 were prepared by applying multiple layers of the following compositions on a subbed cellulose triacetate film support.

(Composition of photosensitive layer) The numbers corresponding to the respective components are shown by the same notation as that shown in Example 1.

First layer: antihalation layer Black colloidal silver ・ ・ ・ ・ ・ Silver 0.15 U-1 ・ ・ ・ 0.5 U-2 ・ ・ ・ 0.2 HBS-3 ・ ・ ・ ・ ・ 0 .4 Gelatin: 1.5 Second layer: intermediate layer C-7: 0.10 C-3: 0.11 2,5-di-t-octylhydroquinone ... 0.05 HBS-1 ... 0.10 Gelatin ... 1.50 Third layer: first red-sensitive emulsion layer Silver iodobromide emulsion ... 0.9 C -12 ... 0.35 C-13 ... 0.37 C-3 ... 0.12 C-15 ... 0.052 HBS-3 ...・ 0.30 Sensitizing dye I ・ ・ ・ ・ ・ 4.5 × 10 ^-4 Same II ・ ・ ・ 1.4 × 10 ^-5 Same III ・ ・ ・ 2.3 × 10 ^-4 Same IV ····· 3.0 × ^{10 -5} gelatin ... 1.50 fourth layer: sensitization second red-sensitive emulsion layer silver iodobromide emulsion ..... 1.0 dye I ····· 3.0 × ^{10 -4} same II ··・ ・ ・ 1.0 × 10 ^-5 Same III ・ ・ ・ 1.5 × 10 ^-4 Same IV ・ ・ ・ 2.0 × 10 ^-5 C-4 ・ ・ ・ 0.078 C -3 ... 0.045 HBS-1 ... 0.010 Gelatin ... 0.80 Fifth layer: intermediate layer 2,5-di-t-octylhydroquinone ...・ 0.12 HBS-1 ・ ・ ・ 0.20 Gelatin ・ ・ ・ 1.0 Sixth layer: First green sensitive emulsion layer Silver iodobromide emulsion ・ ・ ・ ・ ・ 0.5 Sensitizing dye V: 6.0 × 10 ⁻⁵ Same VI: 2.0 × 10 ⁻⁴ Sensitizing dye VII: 4.0 × 10 ⁻⁴ C-6 ... -0.27 C-1 ... 0.072 C-7 ... 0 12 C-8 ・ ・ ・ 0.010 HBS-1 ・ ・ ・ 0.15 Gelatin ・ ・ ・ 0.70 Seventh layer: second green emulsion layer Silver iodobromide emulsion ・ ・ ・..0.8 sensitizing dye V ... 4.0 × 10 ^-5 same VI ・ ・ ・ 1.5 × 10 ^-4 same VII ・ ・ ・ 3.0 × 10 ^-4 C -6 ... 0.071 C-1 ... 0.021 C-7 ... 0.016 HBS-2 ... 0.10 Gelatin ... 0 .91 8th layer: intermediate layer 2,5-di-t-octylhydroquinone ... 0.05 HBS-2 ... 0.10 gelatin ... 0.70 9th layer: Emulsion layer Silver iodobromide: 0.40 Sensitizing dye X: 5.0 × 10 ^-4 C-8: 0.051 C-14: 0 .095 HBS-1 0.15 HBS-2 0.15 Gelatin 0.60 Tenth layer: Yellow filter layer Yellow colloidal silver 0.85 2,5-di-t-octyl ha Idroquinone 0.15 HBS-1 0.20 Gelatin 0.80 11th layer: 1st blue-sensitive emulsion layer Silver iodobromide emulsion 0 .35 Sensitizing dye VIII: 7.0 × 10 ⁻⁴ C-9: 1.10 C-8: 0.050 HBS-1: 0. 40 Gelatin ・ ・ ・ 1.5 12th layer: 2nd blue-sensitive emulsion layer Silver iodobromide emulsion ・ ・ ・ 0.5 Sensitizing dye VIII ・ ・ ・ 1.5 × 10 ^-4 C -9 0.31 HBS-1 0.12 Gelatin 0.88 13th layer: Intermediate layer U-1 0.12 U- 0.16 HBS-3 0.12 Gelatin 0.75 14th layer: protective layer Silver iodobromide emulsion (4 mol% silver iodide, grain size) (Coefficient of variation: 10%, average particle size: 0.08μ) 0.15 Polymethylmethacrylate particles (diameter: 1.5μ)
0.2 S-1 ... 0.05 S-2 ... 0.15 Gelatin ... 0.80 In addition to the above composition, each layer contains a surfactant and a gelatin hardening agent. H-1 was added.

Samples 401 to 403 were prepared by using emulsions having the contents shown in Table 4 as shown in Table 9.

These samples were exposed and developed in the same manner as described in Example 1 and their RMS and MTF values were measured. RM
The S measurement sample was exposed at 2 lux. The measurement results are shown in Table 10.

Also in the layer structure of Example 4, the sample of the present invention achieves excellent graininess and sharpness.

Claims (1)

[Claims] 1. A silver halide photographic light-sensitive material having blue, green and red light-sensitive layers on a support and capable of forming a multicolor image, wherein at least the blue light-sensitive layer is at least a high-sensitivity layer and a low-sensitivity layer. A layer other than the highest sensitivity layer of the blue light-sensitive layer, a green light-sensitive layer or a layer containing an emulsion composed of normal crystal silver halide grains in which the highest light-sensitive layer of the blue light-sensitive layer is substantially monodisperse. A silver halide color light-sensitive material, characterized in that at least one of the red light-sensitive layers contains an emulsion comprising silver halide grains having an average aspect ratio of 5: 1 or more.