JPH07117723B2 - Silver halide color photographic light-sensitive material - Google Patents

Description

The present invention relates to a silver halide color photographic light-sensitive material, and more specifically, the inter-image effect (interlayer effect; hereinafter referred to as IIE) is further emphasized. , A silver halide color photographic light-sensitive material having improved color reproducibility, sharpness and graininess.

[Prior Art and its Problems] Generally, in a silver halide color photographic light-sensitive material, the density of pixels forming an image is smooth and not rough, that is, the graininess is good, or the contour of the image is clear, Moreover, delicate images are depicted without blurring,
That is, photographic characteristics such as good sharpness are required. In recent years, as the sensitivity of color light-sensitive materials has been increased and the size of cameras has been reduced, the demand thereof has become stronger and stronger.

There are techniques for improving color reproducibility by using a DIR coupler and emphasizing IIE, but various DIR compounds are used. For example, at the time of development, a so-called DIR coupler which reacts with an oxidized product of a color developing agent to form a color dye and releases a development inhibitor, and when developed, reacts with an oxidized product of a color developing agent to release a development inhibitor. A so-called DIR substance that does not form a coloring dye, a substance that directly releases a development inhibitor by reacting with an oxidant of a color developing agent, and a release agent that indirectly releases a development inhibitor,
For example, JP-A-54-145135, JP-A-57-154234, and JP-A-58-16294
No. 9, 58-205150, 59-195643, 59-206834,
Examples thereof include those described in Nos. 59-206836, 59-210440, 60-7429, etc. (hereinafter referred to as timing DIR compounds). In the present specification, those exhibiting the DIR effect are generically referred to as DIR compounds.

When these DIR compounds are used in a silver halide color light-sensitive material, a development inhibitor is released from the DIR compound during development, and an effect of inhibiting development of another silver halide emulsion layer, that is, IIE, can be obtained. In particular, it may release so-called diffusible inhibitory groups or diffusible development inhibitor precursors.
The DIR compound is effective and has been used in the recent silver halide color film, and has some effect. DIR
Since the compound has a strong IIE direction (for example, it is strong from the blue-sensitive silver halide emulsion layer to the green-sensitive silver halide emulsion layer, but weak in the opposite direction), the saturation (chroma) of a specific color is improved. Although it can be expected, it was found to be accompanied by an unfavorable effect of “shift in hue”. Further, even if it is diffusive, the addition layer has the strongest suppression effect, so that the gamma (γ) of the addition layer, the sensitivity, the color density decrease, etc. become problems, and an amount sufficient to give sufficient effect to other layers. Is difficult to use.

JP-B-55-47379 and JP-A-57-93344 disclose a technique of using a so-called diffusible DIR compound to emphasize IIE from one color-sensitive layer to another color-sensitive layer.
No. 57, No. 57-56837, No. 59-131937, etc.
Even with these techniques, as described above, it is the current situation that only an insufficient improvement in color reproducibility can be expected.

Therefore, the first technical object of the present invention is to improve the color reproducibility, and particularly to improve the saturation (chroma) reproduction by increasing the IIE in both directions between different color-sensitive layers. .

On the other hand, as described in the above-mentioned patent publications and specifications, it is known that when IIE is generated using a so-called diffusible DIR compound, the sharpness of the image is improved.

This is due to the edge effect between the layers as well as the edge effect within the added layer and the improvement in color contrast accompanying IIE.

Therefore, the present invention uses DIR compounds according to appropriate usage.
The second technical issue is to improve the sharpness of the image by emphasizing the IIE in both directions.

Further, the present invention, as described in the specification, uses the substantially monodisperse core / shell type silver halide grains to make the developability uniform and the shape of the resulting dye cloud uniform. Therefore, the third technical problem is to improve the graininess.

[Means for Solving the Problems] A silver halide color photographic light-sensitive material of the present invention for solving the above technical problems has two or more light-sensitive silver halide emulsion layers having different color sensitivities on a support. A compound (DIR compound) which has a development inhibitor or a development inhibitor precursor by reacting with an oxidant of a developing agent, respectively, in at least two of the photosensitive silver halide emulsion layers having different color sensitivities. At least two light-sensitive silver halide emulsion layers containing at least one development inhibitor or development inhibitor precursor released from the DIR compound and having a diffusivity of more than 0.34 and having different color sensitivities. A silver halide color photographic light-sensitive material characterized by satisfying the following condition A.

[Condition A] When the development inhibitor A and the development inhibitor B are used in the silver halide emulsion layer 1 and the silver halide emulsion layer 2, respectively, the development inhibition power for the silver halide emulsion layer 1 is A> B. However, when the development inhibiting power in the silver halide emulsion layer 2 is A <B,
A DIR compound having a development inhibitor B in the silver halide emulsion layer 1 and a DI having a development inhibitor A in the silver halide emulsion layer 2
Add R compound.

A preferred embodiment of the invention is that at least one light sensitive silver halide emulsion layer comprises substantially monodisperse silver halide grains. In another preferred embodiment of the present invention, at least one light-sensitive silver halide emulsion layer contains core / shell type silver halide grains having a core silver iodide content of 8 to 30 mol%. That is.

Hereinafter, the present invention will be described in more detail.

In the present invention, the substantially monodisperse silver halide grains mean that the weight of silver halide contained within a grain size range of ± 20% around the average grain size is 60% or more of the total weight of silver halide grains. Say something. Here, the average particle size is defined as the particle size ri (three significant digits) when the product ni × ri ³ of the frequencies ni and ri ³ of the particles having the particle size ri becomes maximum.

In the case of spherical silver halide grains, the particle size referred to herein is the diameter thereof, or in the case of grains having a shape other than spherical,
It is the diameter when the projected image is converted into a circular image of a circular area. The particle size can be obtained, for example, by enlarging the particle from 10,000 times to 50,000 times by an electron microscope and measuring the particle diameter on the print or the area of the projected image (the number of measured particles is Indiscriminately over 1000).

The above-mentioned "consisting essentially of monodisperse silver halide grains" can be used as a mixture of silver halide emulsions having different grain sizes within a range that does not impair the effect of monodispersity. Having a plurality of modes are also included in the present invention. Including such cases, the grain size distribution of the silver halide grains consisting of substantially monodispersed silver halide grains is ± 20% centered on the definition as above.
The silver halide grain weight contained in the grain size range is 60% or more, more preferably 70% or more, and particularly preferably 80%.
% Or more.

As the grains other than the monodisperse silver halide grains of the present invention which can be contained in the above emulsion layer, for example, another silver halide emulsion having an average grain size different from that of the monodisperse silver halide grains of the present invention can be used. Included are the silver halide grains included.

According to a preferred embodiment of the present invention, the monodisperse silver halide grains have a grain structure composed of two or more layers having different silver iodide contents, that is, a so-called core / shell type, and the iodide content of the core is It is a silver halide grain having a rate of 8 to 30 mol%.
The average grain size of the silver halide grains is preferably 0.2 to
It is 3 μm, more preferably 0.3 to 0.7 μm. The silver iodide content of the shell is preferably 0.1 to 6 mol%.

The transition of the silver iodide content in the boundary layer between the core and the shell may have a sharp boundary surface or may have a continuous boundary where the boundary is not always clear. The shape of the silver halide grain according to the present invention may be, for example, any of a hexahedron, an octahedron, a tetradecahedron, a plate and a sphere, and may be a mixture of these various shapes. , Octahedral and tetradecahedral grains are preferred. To produce monodisperse silver halide grains, grains having a desired size can be obtained by the double jet method while keeping pAg constant. For highly monodisperse silver halide grains, the method described in JP-A-54-48521 can be applied. For example, it is produced by a method of adding an aqueous potassium iodobromide-gelatin solution and an aqueous ammoniacal silver nitrate solution to an aqueous gelatin solution containing silver halide seed grains while changing the addition rate as a function of time. At this time, highly monodisperse silver halide grains can be obtained by appropriately selecting the time function of addition rate, pH, PAg, temperature and the like.

Monodisperse core / shell type silver halide is prepared by depositing a shell of a soluble halogen compound and a soluble silver salt solution on the core of the monodisperse silver halide grain obtained by the above method by the double jet method. Particles can be formed. The monodisperse core / shell type silver halide grains according to the present invention have a shell thickness in a preferable range of 0.01 to 0.1.
μm. That is, it is preferable that the thickness is 0.01 μm or more in terms of photographic performance, while the effect of the present invention is sufficiently obtained.
0.1 μm or less is preferable.

Regarding the method for producing the above core / shell type silver halide grains, for example, West German Patent 1,169,290 and British Patent 1,027,146
JP-A-57-154232, JP-B-51-1417 and the like.

In the present invention, for example, a cadmium salt, a zinc salt, a lead salt, a thallium salt, an iridium salt or a complex salt thereof, a rhodium salt or a complex salt thereof, and the like may coexist in the process of producing the silver halide grains according to the present invention.

The above-described silver halide grains according to the present invention constitute a silver halide emulsion together with a hydrophilic colloid binder (eg gelatin) usually used in the art.

Next, the above [condition A] will be described in more detail.

Usually, when a DIR compound is used in a certain color-sensitive layer, even if the development inhibitor or precursor released (hereinafter, the development inhibitor including this precursor) is diffusible, it is a release layer. The added layer itself is most suppressed, and it is difficult to use a large amount of DIR compound due to a decrease in concentration and a decrease in sensitivity.

Also, when a DIR compound is used in a layer, that layer experiences a certain amount of development inhibiting power as described above by the development inhibitor of the DIR compound of its own layer. Therefore, a phenomenon occurs in which the development inhibitory effect of the development inhibitor supplied from another layer is not sufficiently exhibited. That is, in both directions between the two color-sensitive layers
When trying to cause IIE, both IIEs will either be of a lower level, or strong in one direction and significantly weaker in the other.

However, it is clear from the results of the study by the present inventors that the released development inhibitors show different development inhibiting powers in different color-sensitive layers, and that the development inhibiting powers differ depending on the type of the development inhibitor. became.

For example, when the development inhibitor A and the development inhibitor B are used in the green-sensitive silver halide emulsion layer and the red-sensitive silver halide emulsion layer in approximately equimolar amounts, development for the green-sensitive silver halide emulsion layer is performed. When the inhibitory power is A> B, but the development inhibitory power in the red-sensitive silver halide emulsion layer is A <B, the DIR compound having the development inhibitor B in the green-sensitive silver halide emulsion layer is red-sensitive halogenated. By adding the DIR compound having the development inhibitor A to the silver emulsion layer, the self-layer-inhibiting property in each added layer is weakened and the other color-sensitive layers are greatly affected [large IIE]. It became possible to give IIE in both directions, and it became possible to greatly increase IIE in both directions.

The usage of such a DIR compound, that is, the method for determining the color-sensitive layer to which the DIR compound should be added, is based on the above example, that is, between the green-sensitive silver halide emulsion layer and the red-sensitive silver halide emulsion layer. It is not only effective, but also effective in other types of different color-sensitive layers. That is, for example, when the development inhibitor C and the development inhibitor D are used in equimolar amounts in the blue-sensitive silver halide emulsion layer and the green-sensitive silver halide emulsion layer, the development for the blue-sensitive silver halide emulsion layer is performed. Inhibitory power is C> D, but development inhibitory power in green-sensitive silver halide emulsion layers is C <D
, The development inhibitor D is added to the blue-sensitive silver halide emulsion layer.
By adding a DIR compound having a development inhibitor C to the green-sensitive silver halide emulsion layer,
It becomes possible to keep the suppression of self-layer in each additive layer weak and to have a great influence (large IIE) on other color-sensitive layers, and to greatly increase IIE in both directions. Became possible.

Further, for example, when the development inhibitor E and the development inhibitor F are used in equimolar amounts in the blue-sensitive silver halide emulsion layer and the red-sensitive silver halide emulsion layer, the development for the blue-sensitive silver halide emulsion layer is performed. When the inhibitory power is E <F, but the developmental inhibitory power in the red-sensitive silver halide emulsion layer is E> F, the DIR compound having the development inhibitor E in the blue-sensitive silver halide emulsion layer is red-sensitive halogenated. By adding a DIR compound having a development inhibitor F to the silver emulsion layer, the self-layer-inhibiting property in each added layer is weakened, and a large influence [large IIE] is exerted on other color-sensitive layers. IIE in both directions, which makes it possible to give
It has become possible to dramatically increase

Note that the present invention is not limited to the case where the development inhibitor is used in an equimolar manner as described above, but by increasing or decreasing the amount of use of each development inhibitor, if the above relationship can be shown, IIE in both directions is similarly set. It can be increased. For example, the development inhibitor G and the development inhibitor H are used, and when they are equimolar, the inhibition power on the green-sensitive silver halide emulsion layer is G >> H and the inhibition power on the red-sensitive silver halide emulsion layer is G >>. In case of H,
By reducing the addition amount of the development inhibitor G (denoted as development inhibitor G '), G'> in the green-sensitive silver halide emulsion layer>
When the relationship of H and G '<H is established in the H- and red-sensitive silver halide emulsion layers, the DIR compound having H is added to the green-sensitive silver halide emulsion layer and the DIR compound having G is added in a lower (mol) amount than the former. By adding it to the red-sensitive silver halide emulsion layer, a large IIE could be obtained in both directions.
The same was true for other types of different color-sensitive layers.

Then, when the combination of the DIR compound having each suppressing group and its additive layer is reversed (for example, in the above specific example,
DIR containing development inhibitor A in green-sensitive silver halide emulsion layer
As a compound, a DIR compound having a development inhibitor B was added to the red-sensitive silver halide emulsion layer), and the self-layer suppressing effect was very strong, and IIE in both directions was extremely small. These cases are also clarified in Examples described later.

In the present invention, the usage of the DIR compound, that is, the selection of the suppressing group of the DIR compound can be carried out, for example, by the following method.

Three types of photosensitive materials having layers having the following compositions are prepared on a transparent support.

Sample (I): Sample having a red-sensitive silver halide emulsion layer A gelatin coating solution containing 0.08 mol of the low-sensitivity red-sensitive silver halide emulsion of Examples 1 and 2 and Exemplified coupler (C-7) per mol of silver. Was applied so that the coated silver amount was 1.4 g / m ² .

Sample (II): Sample having a green-sensitive silver halide emulsion layer A gelatin coating solution containing 0.07 mol of the low-sensitivity green-sensitive silver halide emulsion of Examples 1 and 2 and the exemplified coupler (M-2) per mol of silver. Was applied so that the applied silver amount was 1.1 g / m ² .

Sample (III): Sample having blue-sensitive silver halide emulsion layer A gelatin coating solution containing 0.34 mol of the low-sensitivity blue-sensitive silver halide emulsion of Examples 1 and 2 and Exemplified coupler (Y-4) per mol of silver. Was applied so that the coated silver amount was 0.5 g / m ² .

In addition to the above, each layer contains a gelatin hardening agent and a surfactant. Incidentally, these samples were prepared corresponding to the light-sensitive materials constructed in the examples.

The obtained samples (I) to (III) were exposed to white with a wedge, and the developing time was changed to 1 minute 45 seconds for (I), 2 minutes 40 seconds for (II) and 3 minutes 15 seconds for (III). Except for the above, the treatment is performed according to the treatment method of Example 1 described later. However, this development time was selected so as to approximate the developability of each layer in the multilayer structure in a single layer sample. Here, as the developing solution, those added with various amounts of various development inhibitors and those not added were used so that the development inhibitory powers in the sample (II) were almost equal. Sensitivity * 1 (So) of each of the samples (I) to (III) treated with the developer containing no development inhibitor and sensitivity * 2 of each sample obtained by the development of the developer containing the development inhibitor. (S)
(ΔS) is used as a measure of the development inhibiting power of each color-sensitive layer by each development inhibitor.

* 1) Sensitivity So is the logarithm of the reciprocal of the exposure amount (Eo) at the density point of fog density +0.3, that is, -logEo.

* 2) As in 1) above, the sensitivity S is defined as the logarithm of the reciprocal of the exposure amount (E) at the density point of fog density +0.3, that is, -logE.

Table 1 below shows the difference in the development inhibiting power for each color-sensitive layer for several types of development inhibitors, which were conducted based on the above standard experiment.

When the DIR couplers having the development inhibitors A-1 to A-6 are used, they may be used in a combination in which the development inhibition of the added layer itself is small and the development inhibition of the other layers is large, as described above.

It was confirmed by another experiment that the order of the development inhibiting power of each development inhibitor for each color-sensitive layer in this system of each of the development inhibitors exemplified in Table 1 did not change with the addition amount. Therefore, the red-sensitive silver halide emulsion layer and the blue-sensitive silver halide emulsion layer In order to form a preferable combination with the sensitive silver halide emulsion layer, for example, the value of the red sensitive silver halide emulsion layer (Sample (I)) is standardized by the value of one compound, and the ratio at that time is blue. It is easy to understand if a value is obtained by dividing the value of the sensitive silver halide emulsion layer (Sample (III)) (second
See table).

That is, the following combination examples and the like are listed in Table 1.

[Example of combination of development inhibitor of DIR compound added to red-sensitive silver halide emulsion layer / development inhibitor of DIR compound added to green-sensitive silver halide emulsion layer] A-1 / A-2, A-2 / A-3, A-1 / A-4, A
-1 / A-5, A-1 / A-6, A-2 / A-3, A-2 / A
-4, A-2 / A-5, A-2 / A-6, A-4 / A-
3, A-5 / A-3, A-5 / A-4, A-6 / A-3,
A-6 / A-4 etc.

Similarly, a preferable combination, in which the added layer suppression is small and the other layer suppression is large, between the green-sensitive silver halide emulsion layer and the blue-sensitive silver halide emulsion layer and between the red-sensitive silver halide emulsion layer and the blue-sensitive silver halide emulsion layer, is preferable. You can choose. In selecting the inhibitor in the present invention, it is preferable to adopt the method described above, that is, the sample and the method.

Further, it is preferable that the working distance of the development inhibitor or the development inhibitor precursor released from the DIR compound in order to emphasize IIE is large. That is, it is preferable that the so-called diffusivity is large.

In the present invention, the diffusivity of the development inhibitor or development inhibitor precursor released from the DIR compound can be evaluated by the following method.

A photosensitive material sample (I consisting of a layer having the following composition on a transparent support
V) and (V) were made.

Sample (IV): Sample having a green-sensitive silver halide emulsion layer Silver iodobromide spectrally sensitized to green sensitivity (silver iodide 6 mol%, average particle size 0.48 μm) and exemplified coupler (M-2) as silver A gelatin coating solution containing 0.07 mol per mol of silver was applied.
1 g / m ² , coated so that the amount of gelatin is 3.0 g / m ² , and a protective layer thereon; chemically sensitized and spectrally sensitized silver iodobromide (silver iodide 2 mol%, A gelatin coating solution containing an average particle size of 0.08 μm) was coated so that the coating silver amount was 0.1 g / m ² and the gelatin coating amount was 0.8 g / m ² .

Sample (V): The protective layer of the above sample (IV) from which silver iodobromide was removed.

In addition to the above, each layer contains a gelatin hardening agent and a surfactant.

Samples (IV) and (V) were exposed to white using a wedge and then processed according to the processing method of Example 1 described below except that the development time was set to 2 minutes and 40 seconds. The sensitivity of the sample (V) is 60% in the developer.
(A logarithmic display of -ΔlogE = 0.22) was used in which the amount of each developer was suppressed and the amount in which no development inhibitor was added.

The sensitivity of the sample (IV) when the development inhibitor is not added is So, the sensitivity of the sample (V) is So ′, the sensitivity of the sample (IV) when the development inhibitor is added is S _IV, and the sensitivity of the sample (V sensitivity) When S _V, expressed reduced sensitivity of the sample (IV) ΔSo = So'-S IV, reduced sensitivity ΔS = So-S _V of the sample (V), and diffusivity = ΔS / ΔSo.

However, all the sensitivities were set to the logarithm (-logE) of the reciprocal of the exposure amount at the density point of fog density + 0.3.

The value obtained by this method was used as a measure of diffusivity. Table 3 illustrates the numerical diffusivity of the development inhibitor.

As is clear from Example 1 which will be described later, those having a relatively small diffusivity (A-5: 0.34 or less) also have a small IIE, and therefore those having a diffusivity exceeding 0.34 are preferable. In the present invention, diffusivity of 0.4 or more is more preferable.

In the silver halide color light-sensitive material of the present invention, the same light-sensitive emulsion layers are each (or at least one) 3
Although it can be divided into more than two layers, it is preferable that the number of layers does not exceed 3 because of the diffusibility of the inhibitor or inhibitor precursor generated from the DIR compound of the present invention in the layer.

In recent years, a silver halide color photographic light-sensitive material having high sensitivity, high image quality and good color reproducibility has been desired, but the present invention is directed to such a high-sensitivity silver halide color photographic light-sensitive material. It is effective when applied to materials, but rather more effective.

The following is known as a layer structure for achieving high sensitivity and the like. For example, in the above-mentioned normal layer constitution of each light-sensitive silver halide emulsion layer of a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer, which are successively coated on a support, Part or front part of the light-sensitive silver halide emulsion layer, substantially the same color-sensitive layer,
A high-sensitivity silver halide emulsion layer (hereinafter referred to as a high-sensitivity emulsion layer) and a low-sensitivity silver halide emulsion layer (hereinafter referred to as a low-sensitivity emulsion layer) containing a diffusion-resistant coupler capable of forming substantially the same hue as each other. There is a layer structure in which the layers are separated and adjacently stacked. Hereinafter, this layer structure is referred to as a high-sensitivity forward layer structure.

On the other hand, the following technique is known as an inverse layer structure that achieves high sensitivity.

[A] First, in JP-A-51-49027, (a) each low-sensitivity emulsion layer (RG low-sensitivity layer unit) of a red-sensitive silver halide emulsion layer and a green-sensitive silver halide emulsion layer in order from the support side. (B) On the RG low-sensitivity layer unit, high-sensitivity emulsion layers (RG high-sensitivity layer unit) of a red-sensitive silver halide emulsion layer and a green-sensitive silver halide emulsion layer are sequentially arranged from the support side. (C) On the RG high-sensitivity layer unit, a high-sensitivity and low-sensitivity emulsion layer (B
A high- and low-sensitivity layer unit) is coated. [B] Further, JP-A-53-97424 discloses a silver halide color photographic light-sensitive material of the above-mentioned [A] structure with a low RG sensitivity. It is described that each of the red-sensitive silver halide emulsion layer and the green-sensitive silver halide emulsion layer of the layer unit is separately coated with medium sensitivity and low sensitivity, and [C] Furthermore, according to the present applicant. In Japanese Patent Application No. 58-52115,
The structure in which the RGB low-sensitivity layer unit and the RGB high-sensitivity layer unit are sequentially coated on the support is described.

The silver halide color photographic light-sensitive material of these [A], [B] and [C] constitutions (hereinafter referred to as high-sensitivity reverse layer constitution) is
At least between the high-sensitivity green-sensitive silver halide emulsion layer and the green-sensitive silver halide emulsion layer having a lower sensitivity than the high-sensitivity green-sensitive silver halide emulsion layer, at least a high-sensitivity red-sensitive silver halide emulsion It is an effective means for achieving the object of high sensitivity and high image quality by having layers.

The present invention is effective, or even more effective, when applied to any silver halide color photographic light-sensitive material having the above-mentioned high-sensitivity forward layer structure and high-sensitivity reverse layer structure.

In order to apply the present invention in the case where there are a plurality of identical color-sensitive layers as described above, it is sufficient that the DIR compound which is the object of the combination of the present invention is added to one of them, The effect is further enhanced when it is used for a plurality of layers. When a plurality of layers having the same color sensitivity are added to only one layer, it is advantageous to use the layer having the largest amount of silver, and as the silver halide grains, the substantially monodisperse core / shell type halogenated Most preferred are silver particles.

The silver halide emulsion according to the present invention may be chemically sensitized.

The silver halide emulsion according to the present invention is chemically ripened by adding a sulfur-containing compound, and before, during, or after the chemical ripening, at least one kind of nitrogen-containing heteroaryl having a hydroxytetrazaindene and a mercapto group. You may make it contain at least 1 sort (s) of a ring compound.

The silver halide used in the present invention contains a suitable sensitizing dye in an amount of 5 × 10 ^{−8 to} 3 × 10 ^{−3 with} respect to 1 mol of silver halide in order to impart photosensitivity to a desired wavelength region. Optical sensitization can be performed by adding a mole. Various kinds of sensitizing dyes can be used, and one kind or a combination of two or more kinds of sensitizing dyes can be used.

In order to add a sensitizing dye to the silver halide emulsion according to the present invention, a dye solution such as methyl alcohol, ethyl alcohol, acetone, dimethylformamide or a fluorinated alcohol described in JP-B-50-40659 is hydrophilic. It is used by dissolving it in a basic organic solvent.

The silver halide emulsion may be added at any time from the start of chemical ripening, during ripening, and at the end of ripening, and in some cases, it may be added immediately before the emulsion coating.

The silver halide color photographic light-sensitive material of the present invention may contain a water-soluble dye in the hydrophilic colloid layer as a filter dye or for various purposes such as prevention of irradiation. Such dyes include oxonol dyes, hemioxanol dyes, merocyanine dyes and azo dyes. Of these, oxonol dyes, hemioxonol dyes and merocyanine dyes are useful.

It is more effective to fix these water-soluble dyes in the form of a mold.

Next, the diffusible DIR compound preferably used in the present invention will be described.

The diffusible DIR compound preferably used in the present invention is represented by the following general formula (1).

In formula (1) AY) _m , A represents a coupler component, m represents 1 or 2, and
Y represents a group capable of releasing a development inhibitor having a large diffusibility or a development inhibitor, which is a group which is bonded to the coupling position of the coupler component A and is released by the reaction with the oxidation product of the color developing agent.

It is sufficient that A has the properties of a coupler, and it is not always necessary to form a dye by coupling.

In the general formula (1) of the diffusible DIR compound, Y represents the following general formulas (2A) to (5).

In the above general formulas (2A) to (2D) and (3), R ₁
Is an alkyl group, an alkoxy group, an acylamino group, a halogen atom, an alkoxycarbonyl group, a thiazolideneamino group, an aryloxycarbonyl group, an acyloxy group,
Carbamoyl group, N-alkylcarbamoyl group, N, N-
Dialkylcarbamoyl group, nitro group, amino group, N-
Arylcarbamoyloxy group, sulfamoyl group, N
Represents an alkylcarbamoyloxy group, a hydroxy group, an alkoxycarbonylamino group, an alkylthio group, an arylthio group, an aryl group, a heterocyclic group, a cyano group, an alkylsulfonyl group or an aryloxycarbonylamino group. n represents 1 or 2, when n is 2, R ₁ may be the same or different, and the total number of carbon atoms contained in n R ₁ is 0 to 10.

R ₂ of the general formula (2E) has the same meaning as R ₁ of (2A) to (2D), X represents an oxygen atom, a sulfur atom or a selenium atom,
And in the general formula (4), R ₂ represents an alkyl group, an aryl group or a heterocyclic group.

In formula (5), R ₃ represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group, and R ₄ represents a hydrogen atom, an alkyl group, an aryl group, a halogen atom, an acylamino group, an alkoxycarbonylamino group, an aryloxy. It represents a carbonylamino group, an alkanesulfonamide group, a cyano group, a hetrocyclic group, an alkylthio group or an amino group.

When R ₁ , R ₂ , R ₃ or R ₄ represents an alkyl group, it may be substituted or unsubstituted, linear or branched, or a cyclic alkyl group. The substituent is a halogen atom, a nitro group, a cyano group, an aryl group, an alkoxy group, an aryloxy group, an alkoxycarbonyl group,
Examples thereof include an aryloxycarbonyl group, a sulfamoyl group, a carbamoyl group, a hydroxy group, an alkanesulfonyl group, an arylsulfonyl group, an alkylthio group and an arylthio group.

When R ₁ , R ₂ , R ₃ or R ₄ represents an aryl group, the aryl group may be substituted. As the substituent, an alkyl group, an alkenyl group, an alkoxy group, an alkoxycarbonyl group, a halogen atom, a nitro group, an amino group, a sulfamoyl group, a hydroxy group, a carbamoyl group, an aryloxycarbonylamino group, an alkoxycarbonylamino group, an acylamino group, Examples thereof include a cyano group and a ureido group.

When R ₁ , R ₂ , R ₃ or R ₄ represents a heterocyclic group, it represents a 5-membered or 6-membered monocyclic or condensed ring containing a nitrogen atom, an oxygen atom or a sulfur atom as a hetero atom, and a pyridyl group, A quinolyl group, a furyl group, a benzothiazolyl group, an oxazolyl group, an imidazolyl group, a thiazolyl group, a triazolyl group, a benzotriazolyl group, an imide group, an oxazine group, etc., which are further substituted by the substituents listed for the aryl group. It may have been done.

In formulas (2E) and (4), the number of carbon atoms contained in R ₂ is 1 to 15.

In the above general formula (5), the total number of carbon atoms contained in R ₃ and R ₄ is 1 to 15. In the general formula (1), Y represents the following general formula (6).

Diffusible DIR compound General formula (6) -TIME-INHIBIT In the formula, the TIME group is a group that is bonded to the coupling position of the coupler and can be cleaved by a reaction with a color developing agent. After cleavage from the coupler, the INHIBIT group is appropriately cleaved. It is a group that can be suppressed and released. The INHIBIT group is a development inhibitor.

In the general formula (6), a -TIME-INHIBIT group represents the following general formulas (7) to (13).

In formulas (7) to (13), R ₅ represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an aralkyl group,
Alkoxy group, alkoxycarbonyl group, anilino group,
An acylamino group, a ureido group, a cyano group, a nitro group, a sulfamido group, a sulfamoyl group, a carbamoyl group, an aryl group, a carboxy group, a sulfo group, a hydroxy group, an alkanesulfonyl group, and general formulas (7), (8), and (9) ), (11) and (13), 1 represents 1 or 2, and in the general formulas (7), (11), (12) and (13),
k represents an integer of 0 to 2, and in the general formulas (7), (10) and (11), R ₆ represents an alkyl group, an alkenyl group, an aralkyl group, a cycloalkyl group or an aryl group, ) And (13), B is an oxygen atom or (R ₆ has the same meaning as previously defined.), And the INHIBIT group has the general formula defined by the general formulas (2A), (2B), (3), (4) and (5) and the carbon number. Except the same meaning.

However, in the general formulas (2A), (2B) and (3),
The total number of carbon atoms contained in each R ₁ in a molecule is ₁ to 32.
In the general formula (4), R ₂ has ₁ to 32 carbon atoms, and in the general formula (5), the total number of carbon atoms contained in R ₃ and R ₄ is 0 to 32.

When R ₅ and R ₆ represent an alkyl group, they may be substituted or unsubstituted, linear or cyclic. Examples of the substituent include the substituents enumerated when R _{1 to} R ₄ are alkyl groups.

When R ₅ and R ₆ represent an aryl group, the aryl group may be substituted. Examples of the substituent include the substituents enumerated when R _{1 to} R ₄ are aryl groups.

Of the above diffusible DIR compounds, the general formula (2A), (2
Those having a leaving group represented by B) and (2E) to (4) are particularly preferable.

Examples of the yellow image-forming coupler residue represented by A in the general formula (1) include pivaloyl acetanilide type,
Benzoyl acetanilide type, malon diester type, malon diamide type, dibenzoyl methane type, benzothiazolyl acetamide type, malon ester monoamide type, benzothiazolyl acetate type, benzoxazolyl acetamide type, benzoxazolyl acetate type, Malon diester type, benzimidazolyl acetamide type, or benzimidazolyl acetate type coupler residues, heterocyclic-substituted acetamides contained in U.S. Pat.No. 3,841,880 or coupler residues derived from heterocyclic substituted acetates or U.S. Pat.No. 3,770,446, British Patent 1 , 45
9,171, West German Patent (OLS) 2,503,009, JP-A-50-1397
No. 38 or Research Disclosure 15737, a coupler residue derived from an acylacetamide, or a heterocyclic coupler residue described in US Pat. No. 4,046,574.

Examples of the magenta color image forming coupler residue represented by A include 5-oxo-2-pyrazoline nucleus, pyrazolo- [1,5-
a] A coupler residue having a benzimidazole nucleus or a cyanoacetophenone type coupler residue is preferable. The cyan image forming coupler residue represented by A is preferably a coupler residue having a phenol nucleus or an α-naphthol nucleus, and an indazolone or pyrazolotriazole coupler residue.

Furthermore, the coupler does not substantially form a dye after releasing the development inhibitor by coupling with the oxidized product of the developing agent.
The effect as a DIR coupler is the same. Examples of this type of coupler residue represented by A include U.S. Pat. No. 4,052,213,
Same 4,088,491, same 3,632,345, same 3,958,993 or same
Examples thereof include the coupler residue described in No. 3,961,959.
The preferred diffusible DIR compounds used in the present invention include, but are not limited to, the following compounds.

[Exemplified compound]

These compounds are disclosed in U.S. Patents 4,234,678 and 3,227,554.
Issue 3,617,291, Issue 3,958,993, Issue 4,149,886,
3,933,500, JP-A-57-56837, JP-B-51-13239
No. 2,072,363, 2,070,266, Research Disclosure, December 21, 1981, No. 21228, and the like.

The addition amount of the diffusible DIR compound of the present invention is generally preferably 2 × 10 ^{-4 to} 5 × 10 ^-1 mol, and more preferably 1 × 10 _-3 to 1 × 10 ^-1 mol per mol of silver in the emulsion layer. Is.

In a preferred embodiment of the present invention, the silver halide grains are monodisperse core / shell type silver halide grains having an iodide content of the core of 8 mol% or more and 30 mol% or less. When the iodide content of the core is less than 8 mol%, the expected development suppressing effect cannot be found because the amount of iodide ions released from the core during development is small, as will be described later. or,
If the iodide content of the core exceeds 30 mol%, the amount of iodide ions is too large and the development inhibiting effect is too large, which affects the color developability.

The synergistic effect of the silver halide grains and the DIR compound interacting with each other remarkably improves the color reproducibility and image quality of the color light-sensitive material, particularly sharpness and graininess. This improvement in image quality is due to the development inhibitory effect of the interacting DIR compounds and the monodisperse core / shell type silver halide emulsion. By adding the effect of suppressing the development of iodide ions released during development, the graininess is improved by uniforming the shape of the color dye cloud, and the deterioration of graininess due to the diffusion of the oxidant of the color developing agent is prevented. It is estimated that the sharpness will be significantly improved by strengthening the effect.

To describe the light-sensitive material of the present invention in more detail,
A usual colored magenta coupler can be used in combination in the green-sensitive emulsion layer of the present invention. As the colored magenta coupler, those described in U.S. Pat. Nos. 2,801,171, 3,519,429 and Japanese Patent Publication No. 48-27930 can be used.

Colored magenta couplers which are particularly preferably used are as follows.

Further, a usual color cyan dye coupler can be used in the red-sensitive emulsion layer of the present invention. As the colored cyan coupler, those described in JP-B-55-32461 and British Patent 1,084,480 can be used.

Particularly preferred color cyan couplers include the following.

The light-sensitive emulsion layers constituting the light-sensitive material of the present invention may contain corresponding color forming couplers.

It is generally preferable that the blue-sensitive layer of the present invention contains a coupler forming a yellow dye, and as the yellow color-forming coupler, a known open chain ketomethylene type coupler can be used. Of these, benzoylacetanilide compounds and pivaloylacetanilide compounds can be advantageously used.

Specific examples of yellow color couplers are described in JP-A-47-26133 and 48-48.
-29432, 50-87650, 51-17438, 51-102636
No. 45/19956, U.S. Patents 2,875,057, 3,40
No. 8,194, No. 3,519,429, No. 51-33410, No. 51-107
83, 46-19031, etc.

Particularly preferred couplers are:

Examples of the magenta color forming coupler used in the light-sensitive material of the present invention include pyrazolone compounds, indazolone compounds,
A cyanoacetyl compound, a pyrazolotriazole compound or the like can be used, and a pyrazolone-based compound is particularly advantageous.

Specific examples of magenta color couplers that can be used are disclosed in JP-A-49-1.
11631, JP-B-48-27930, JP-A-56-29236, U.S. Patents 2,600,783, 3,062,653, 3,408,194, and
3,519,429, JP-A-57-94752 and Research Disclosure 12443.

Particularly preferred couplers are:

As the cyan color forming coupler used in the light-sensitive material of the present invention, a phenol compound, a naphthol compound or the like can be used.

Specific examples thereof, U.S. Pat.Nos. 2,423,730 and 2,474,293,
No. 2,895,826 and JP-A No. 50-117422.

Particularly preferred couplers are:

In the silver halide emulsion layer and other photographic constituent layers of the present invention, a non-diffusible DIR compound, a non-diffusible coupler that reacts with an oxidized product of a developing agent to form a diffusible dye that appropriately bleeds, a polymer coupler, etc. A coupler other than the diffusible DIR compound of the present invention may be used in combination. Regarding a non-diffusible DIR compound and a non-diffusible coupler which reacts with an oxidized product of a developing agent to form a diffusible dye that appropriately bleeds, Japanese Patent Application No. 59-1
Reference can be made to the description of No. 93611 and to the description of Japanese Patent Application No. 59-172151 filed by the present applicant regarding polymer couplers. The total amount of the couplers used in each layer may be appropriately selected because the maximum concentration varies depending on the color developability of each coupler, but it is preferably about 0.01 to 0.30 mol per mol of silver halide.

In order to incorporate these diffusible DIR compounds and couplers in the coating solution for silver halide emulsion and other photographic constituent layers according to the present invention, when the diffusible DIR compounds and couplers are alkali-soluble, they are prepared as an alkaline solution. It may be added, and when it is oil-soluble, for example, U.S. Pat.
No. 322,027, No. 2,801,170, No. 2,801,171, No.
No. 2,272,191 and No. 2,304,940, the diffusible DIR compound and the coupler are dissolved in a high-boiling-point solvent, if necessary in combination with a low-boiling-point solvent, and dispersed in fine particles to form a silver halide. It is preferably added to an emulsion or the like. At this time, if necessary, other hydroquinone derivative,
You can use UV absorbers and anti-fading agents together. It is also possible to use a mixture of two or more diffusible DIR compounds and couplers. Further, in the present invention, a method for adding a diffusible DIR compound and a coupler which are preferable in the present invention will be described in detail. With organic acid amides, carbamates, esters, ketones,
Urea derivatives, ethers, hydrocarbons, etc., especially di-n-
Butyl phthalate, tri-cresyl phosphate, triphenyl phosphate, di-isooctyl azelate,
Di-n-butyl sebacate, tri-n-hexyl phosphate, N, N-di-ethyl-caprylamidobutyl, N, N
-Diethyl lauryl amide, n-pentadecyl phenyl ether, di-octyl phthalate, n-nonyl phenol, 3-pentadecyl phenyl ethyl ether, 2,5
-Di-sec-amyl phenyl butyl ether, high-boiling solvent such as monophenyl-di-o-chlorophenyl phosphate or fluoroparaffin, and / or methyl acetate, ethyl acetate, propyl acetate, butyl acetate, butyl propionate, cyclohexanol, diethylene glycol Monoacetate, nitromethane, carbon tetrachloride, chloroform, cyclohexanetetrahydrofuran, methyl alcohol, acetonitrile, dimethylformamide,
Dissolved in a solvent having a low boiling point such as dioxane and methyl ethyl ketone, anionic surfactants such as alkylbenzene sulfonic acid and alkylnaphthalene sulfonic acid and / or nonionic surfactants such as sorbitan sesquioleate and sorbitan monolauric acid ester and / or Alternatively, it is mixed with an aqueous solution containing a hydrophilic binder such as gelatin, emulsified and dispersed by a high speed rotating mixer, a colloid mill or an ultrasonic dispersing device, and then added to the silver halide emulsion.

In addition, the diffusible DIR compound and the coupler may be dispersed by using a latex dispersion method. The latex dispersion method and its effect are described in JP-A-49-74538, JP-A-51-59943,
54-32552 Publications and Research Disclosure 1976
August, No. 14850, pp. 77-79.

Suitable latices include, for example, styrene, acrylates,
n-butyl acrylate, n-butyl methane acrylate, 2-acetoacetoxyethyl methacrylate, 2-
(Methacryloyloxy) ethyltrimethylammonium methosulfate, 3- (methacryloyloxy) propane-1-sulfonic acid sodium salt, N-isopropylacrylamide, N- [2- (2-methyl-4-oxopentyl)] acrylamide, 2- Acrylamide-
Homopolymers, copolymers and terpolymers of monomers such as 2-methylpropanesulfonic acid and the like.

The silver halide color photographic light-sensitive material of the present invention may contain various photographic additives in addition to the above, for example, color stain inhibitors and researches described in JP-A-46-2128 and U.S. Pat. -Antifoggant, stabilizer, UV absorber, color stain inhibitor, color image fading inhibitor, antistatic agent, hardener, which are described in Disclosure Magazine No. 17643.
Surfactants, plasticizers, wetting agents and the like can be used.
In the silver halide color photographic light-sensitive material of the present invention, hydrophilic colloids used for preparing emulsions include gelatin, derivative gelatin, graft polymers of gelatin and other polymers, proteins such as albumin and casein, and hydroxy. Any one of ethyl cellulose derivative, cellulose derivative such as carboxymethyl cellulose, starch derivative, single or copolymer synthetic hydrophilic polymer such as polyvinyl alcohol, polyvinyl imidazole, polyacrylamide and the like is included.

The support of the silver halide color photographic light-sensitive material of the present invention, for example, baryta paper, polyethylene-coated paper, polypropylene synthetic paper, a transparent support provided with a reflective layer or in combination with a reflector, or a glass plate, cellulose acetate, There are transparent supports such as polyester films such as cellulose nitrate or polyethylene terephthalate, polyamide films, polycarbonate films and polystyrene films, and these supports are appropriately selected according to the purpose of use of the light-sensitive material.

Various coating methods such as dipping coating, air doctor coating, curtain coating, and hopper coating can be used for coating the emulsion layers and other constituent layers used in the present invention. Further, a simultaneous coating method of two or more layers by the method described in US Pat. Nos. 2,761,791 and 2,941,898 can also be used.

The processing method of the photographic light-sensitive material relating to the present invention is not particularly limited, and any conventionally known processing method can be applied.

The color developing solution used for processing the silver halide color photographic light-sensitive material of the present invention is not limited, but preferably has a pH containing a color developing agent of 8 or more, more preferably 9 to 10.
12 alkaline aqueous solution. The aromatic primary amine developing agent as the color developing agent is a compound having a primary amino group on the aromatic ring and capable of developing exposed silver halide. A precursor forming such a compound may be added.

As the bleaching agent used in the bleaching solution or the bleach-fixing solution in the bleaching step, those in which a metal ion such as iron, cobalt or copper is coordinated with an organic acid such as aminopolycarboxylic acid or oxalic acid or citric acid are generally known. There is.

The silver halide fixing agent is, for example, sodium thiosulfate, ammonium thiosulfate, potassium thiocyanate, sodium thiocyanate, or thiourea, thioether, etc., which is reacted with silver halide such as those used in ordinary fixing treatment to dissolve in water. Compounds forming a silver salt of The processing temperature of various processing steps such as color development, bleach-fixing (or bleaching / fixing) of the silver halide color photographic light-sensitive material of the present invention, and optionally washing with water, stabilization, drying, etc. is from the viewpoint of rapid processing It is preferably carried out at 30 ° C. or higher.

The silver halide color photographic light-sensitive material of the present invention is disclosed in JP-A-58-1.
No. 4834, No. 58-105145, No. 58-134634 and No. 58-18631
No. 59-89288 and Japanese Patent Application Nos. 58-2709 and 59-89288.

[Effects of the Invention] According to the silver halide color photographic light-sensitive material of the present invention, IIE in both directions can be further increased between different color-sensitive layers, thereby improving color reproducibility, and particularly, saturation ( Chroma) reproduction can be improved and with proper usage
It is also possible to enhance the sharpness and graininess of an image by enhancing IIE in both directions with a DIR compound.

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

In addition, the detection of the improvement effect of image sharpness is performed by MTF (Modulatio
n Transfer Function), spatial frequency 20cycle / mm
It was carried out by comparing the magnitude of the MTF value (MTF * G) of the Green concentration of.

In addition, the granularity (RMS) of a color image with a color image density of 1.0
It was carried out by comparing 1000 times the standard deviation of the variation of the density value caused when scanning with a microdensitometer having a circular scanning aperture diameter of 25 μm.

Further, in all of the following examples, the addition amount in the silver halide color photographic light-sensitive material is shown per 1 m ² , and the silver halide and colloidal silver are shown in terms of silver.

The method of sensitizing the photosensitive silver halide emulsion of the samples used in the following examples is described in detail in the examples of Japanese Patent Application No. 61-101674.

Example 1 A silver iodobromide emulsion shown in Table 4 was prepared by the following production method. Em-1 was usually manufactured by double jet. Em-
Nos. 2 to Em-5 produced core / shell type monodisperse emulsions by the function addition method.

The following layers were sequentially coated on a cellulose triacetate support to prepare a multilayer color film sample.

First layer, antihalation layer (HC layer) An antihalation layer consisting of 0.18 g of black colloidal silver and 1.5 g of gelatin.

Second layer, undercoat layer (1G layer) An undercoat layer made of 2.0 g of gelatin.

Third Sensitivity, Low Sensitivity Layer of Red Sensitive Silver Halide Emulsion Layer (RL Layer) Each of the Ems shown in Table 4 is red-sensitized.
1.4 g, 0.08 mol / mol Ag cyan coupler exemplary compound (C-7), 0.006 mol / mol Ag colored cyan coupler exemplary compound (CC-1), and 0.5 g of the DIR compound shown in Table 5. A low-sensitivity red-sensitive silver halide emulsion layer containing a dispersion that is dissolved in cresyl phosphate (called TCP) and emulsified and dispersed in an aqueous solution containing 1.80 g of gelatin.

Fourth layer, intermediate layer (2G layer) An intermediate layer consisting of 0.14 g of 2,5-di-t-butylhydroquinone and 0.07 g of dibutylphthalero (DBP).

5th layer, low-sensitivity layer of green-sensitive silver halide emulsion layer (GL layer) Each of the Ems shown in Table 4 is green-sensitized.
1.1 g, 0.07 mol / mol Ag magenta coupler exemplified compound (M-2), 0.015 mol / mol Ag colored magenta coupler exemplified compound (CM-5), and DIR compound in Table 5 0.64 g TCP dissolved A low-sensitivity layer of a green-sensitive silver halide emulsion layer containing a dispersion obtained by emulsifying and dispersing in an aqueous solution containing 1.4 g of gelatin.

6th layer, protective layer (3G layer) A protective layer containing 0.8 g of gelatin.

In addition to the above, each layer contains a gelatin hardening agent (1,2-bisvinylsulfonylethane) and a surfactant. Sample No. 1 in which the silver halide emulsion shown in Table 4 and the DIR compound shown in Table 5 were added to the third RL layer and the fifth GL layer
~ No.11 was created.

Green light, red light, and green light + red light were applied to the respective samples via wedges, and the dyes were obtained by processing in the following processing steps.

Processing process (38 ℃) Color development 2 minutes 40 seconds Bleach 6 minutes 30 seconds Washing 3 minutes 15 seconds Fixing 6 minutes 30 seconds Washing 3 minutes 15 seconds Stabilization 3 minutes 15 seconds Drying The composition of the processing solution used in each processing step is as follows. Is the street.

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

[Bleach] Ethylenediaminetetraacetic acid ammonium salt 100.g Ethylenediaminetetraacetic acid diammonium salt 10.0g Ammonium bromide 150.0g Glacial acetic acid 10.0ml Add water to make pH 1 and adjust to pH = 6.0 with ammonia water.

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

[Stabilizer] Formalin (37% aqueous solution) 1.5 ml Conidax (Konishi Rokusha Kogyo Co., Ltd.) 7.5 ml Add 1 to add water.

The characteristic values obtained are shown in Table 5. To the color-sensitive layer
The amount of the DIR compound added is controlled so that the desensitization of the self layer and the decrease of the concentration are almost equal.

If γ * measured with green light on a sample exposed to green light is γAG, and γ * when exposed to green light + red light is γNG, then γAG
/ γ NG represents the size of IIE received by the green-sensitive silver halide emulsion layer. Similarly, γ * measured with red light for a sample exposed to red light is γAR, and γ when exposed to green light + red light *
Is γNR, γAR / γNR represents the magnitude of IIE received by the red-sensitive silver halide emulsion layer. The larger the received IIE, the larger γA / γN.

γ *; If the density of the exposure amount point (Δlog E = 1.0) which is 10 times the exposure amount of the density point of fog + 0.3 is D, then γ = {D− (fog + 0.3)} / 1.0.

As is clear from Table 5, each DIR compound is added so that the self-layer development inhibitory power of each layer becomes almost equal, and from the added amount of the DIR compound, the combination of the present invention is
It is clear that the self-layer development inhibitory power is small (a large amount can be added), the IIE between the color-sensitive layers is large, and the graininess can be obtained by using the emulsion described above. The effect of the present invention is shown by the improvement effect in combination with.

Example 2 The following layers were sequentially coated on a cellulose triacetate film support to prepare a multilayer color film sample.

1st layer, antihalation layer (HC layer) An antihalation layer consisting of 0.24 g of black colloidal silver and 1.7 g of gelatin.

Second layer, isolation layer (IL layer) 0.14 g of 2,5-di-t-butylhydroquinone, 0.07 g of DBP
And an isolation layer consisting of 0.8 g of gelatin.

Third layer, low-sensitivity layer of red-sensitive silver halide emulsion layer (RL layer) Each of the Ems shown in Table 4 is red-sensitized.
1.4g and 0.65g of cyan coupler exemplified compound (C-1
7), 0.05 g of colored cyan coupler exemplified compound (CC-
1) and the DIR compounds shown in Table 6 are dissolved in 0.53 g of TCP and emulsified and dispersed in an aqueous solution containing 1.80 g of gelatin. A low-sensitivity layer of a red-sensitive silver halide emulsion layer. .

Fourth layer, high-sensitivity layer (RH layer) of red-sensitive silver halide emulsion layer Emulsion II consisting of AgBrI containing 0.8 μm of average grain size and 6 mol% of AgI (Emulsion II), red-sensitized 0.9 g , 0.21 g of the cyan coupler exemplified compound (C-8) was dissolved in 0.21 g of TCP, and 1.2 g of gelatin and a dispersion prepared by emulsifying and dispersing in an aqueous solution were used to prepare a high-sensitivity red-sensitive silver halide emulsion layer. Sensitivity layer.

Fifth layer, isolation layer (IL layer) Same as the second layer IL layer.

6th layer, low-sensitivity layer of green-sensitive silver halide emulsion layer (GL layer) Each of the Ems shown in Table 4 is green-sensitized.
1.1g and 0.52g of magenta coupler exemplified compound (M-
2), 0.12 g of the colored magenta coupler exemplified compound (C
M-5), 1.5 g of TCP containing dissolved DIR compounds shown in Table 6
A low-sensitivity layer of a green-sensitive silver halide emulsion layer containing a dispersion obtained by emulsifying and dispersing in an aqueous solution containing 1.4 g of gelatin.

Seventh layer, high-sensitivity layer of green-sensitive silver halide emulsion layer (GH layer) 0.9 g emulsion obtained by color-sensitizing emulsion II to green sensitivity, 0.28 g of magenta coupler exemplified compound (M-12), 0.05 g of the colored magenta coupler exemplified compound (CM-5) was placed in a container
A high-sensitivity layer of a green-sensitive silver halide emulsion layer containing a dispersion of 0.33 g of TCP emulsified and dispersed in an aqueous solution containing 1.2 g of gelatin.

Eighth layer, yellow filter layer (YC layer) 2,5-di-t-butylhydroquinone 0.12g, gelatin 0.9g
A yellow filter layer containing.

9th layer, low-sensitivity layer of blue-sensitive silver halide emulsion layer (BL layer) Each of the Ems shown in Table 4 is blue-sensitized.
0.5 g and 1.0 g of yellow coupler exemplified compound (Y-
4), 0.14 g of TCP in which the DIR compound shown in Table 6 was dissolved
A low-sensitivity layer of a blue-sensitive silver halide emulsion layer containing a dispersion emulsified and dispersed in an aqueous solution containing 1.2 g of gelatin.

The tenth layer, a high-sensitivity layer (BH layer) of a blue-sensitive silver halide emulsion layer: 0.5 g of emulsion, which was obtained by sensitizing emulsion II to blue-sensitivity, and 0.75 g of yellow coupler exemplified compound (Y-4) were dissolved. 0.08g
A high-sensitivity layer of a blue-sensitive silver halide emulsion layer containing a dispersion obtained by emulsifying and dispersing TCP in an aqueous solution containing 1.2 g of gelatin.

Eleventh layer, protective layer (PL layer) A protective layer containing 1.3 g of gelatin.

The sample No. 15 thus prepared was modified as shown in Table 6 below to prepare samples No. 16 to No. 24.

Each layer contains a gelatin hardening agent and a surfactant.

The same processes as in Example 1 were carried out except that each of Samples No. 15 to No. 24 was given a blue light, a green light, a red light and a white light through a wedge and the color development time was 3 minutes 15 seconds. Giving,
A dye image was obtained. The results are shown in Table 6 as in Example 1.

As is clear from Table 6, samples No. 18 to No. according to the present invention.
It can be seen that in Nos. 20 and 23 to No. 24, γA / γN is very large in each color-sensitive layer and high chroma color reproduction is possible compared with the comparative sample. Also, the green light that is most sensitive to the human eye has a high MTF,
It can be seen that an image with high sharpness can be reproduced.

Aside from the exposure described above, samples No. 15 to No. 24 were used to actually photograph the landscape, and the images printed on color paper were compared.
A sharper image than expected with the F value was obtained. It seems to be a synergistic effect of color vividness and sharpness.

Further, in each of Examples 1 and 2, the monodispersed silver halide grains for each layer were used, and each layer was adjusted so that the self-layer development inhibitory forces were almost equal.
A DIR compound is added, and it is clear from the value of the added amount of the DIR compound that the combination of the present invention has a small self-layer development inhibitory power (a large amount can be added). It is clear that the IIE on the way becomes large, the sharpness is remarkably improved, and the graininess is also improved.

Claims (1)

[Claims] 1. A support having two or more light-sensitive silver halide emulsion layers having different color sensitivities, and at least two light-sensitive silver halide emulsion layers having different color sensitivities are respectively developed. 1 each of the compound (DIR compound) that releases the development inhibitor or development inhibitor precursor by reacting with the oxidant of the main agent
At least two photosensitive silver halide emulsion layers containing at least two development inhibitors or development inhibitor precursors having a diffusivity of more than 0.34 and having different color sensitivities, A silver halide color photographic light-sensitive material characterized by satisfying the following condition A. [Condition A] When the development inhibitor A and the development inhibitor B are used in the silver halide emulsion layer 1 and the silver halide emulsion layer 2, respectively, the development inhibiting power for the silver halide emulsion layer 1 is A> However, when the development inhibiting power in the silver halide emulsion layer 2 is A <B, DIR containing the development inhibitor B in the silver halide emulsion layer 1
To the silver halide emulsion layer 2, a DIR compound having a development inhibitor A is added.