JPH0743870A - Positive silver halide color photographic sensitive material - Google Patents

Abstract

PURPOSE:To provide a positive silver halide color photographic sensitive material without affecting on dot reproduction performance, even if the fluctuation of processing occurs. CONSTITUTION:This photographic sensitive material has a layer mainly forming a yellow image, a layer mainly forming a magenta image, and a layer mainly forming a cyan image, and it has at least one combination that when it is exposed to light in an exposure amount of 1/10-10 times that of giving +0.2 minimum density to a first layer optionally selected from the above-mentioned 3 layers in the spectrosensitive region of the first layer and developed, the image density of a second layer optionally selected from the 3 layers is lower than that after development than that not exposed as described above, and a hydrophilic colloidal layer on the side of the image forming layers has a swelling degree of 120-160%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is suitable for producing a proof color image (color proof) from a plurality of black and white halftone images obtained by color separation and halftone image conversion in a color plate making / printing process. The present invention relates to a positive type silver halide color photographic light-sensitive material.

[0002]

2. Description of the Related Art Conventionally, in the process of color plate making / printing, a photopolymer or a diazo compound has been used as a method for obtaining a color proof from a plurality of black and white halftone images obtained by color separation and halftone image conversion. An overlay method for forming a color image and a surprint method are known.

The overlay method is very simple and inexpensive to produce, and has the advantage that it can be used for proofreading by simply stacking four color (subtractive primary colors and black) film sheets. There is a drawback in that the overlapping produces gloss, which results in a texture different from that of the printed matter.

In the surprint method, a colored image is superposed on one support, and a method of obtaining a colored image by toner development utilizing the adhesiveness of a photopolymerizable material is disclosed in US Pat. No. 3,582,327. Nos. 3,607,264 and 3,620,726.

Further, a color proof is formed by transferring a photosensitive coloring sheet to a support, forming an image by exposure and development, laminating another coloring sheet thereon, and repeating the same process. The method of creating is 47
-27441 and JP-A-56-501217.

Further, a method is known in which a photosensitive colored sheet is used and each colored image obtained by exposing and developing the corresponding color separation film is transferred and formed on one support.
-Known as No. 97140. As the colorant of the toner and the color sheet for forming these images, the same coloring material as the printing ink can be used, and thus the color tone of the obtained color proof becomes similar to that of the printed matter.

However, these methods have the drawbacks that images must be superposed or transferred in the process of producing a color proof, which requires a long operation time and a high manufacturing cost.

As a solution to these drawbacks, a method for producing a color proof using a silver salt color photographic light-sensitive material having a white support is disclosed in JP-A-56-113139 and JP-A-5-113139.
6-104335, 62-280746, 62-280747, 62-280
No. 748, No. 62-280749, No. 62-280750, No. 62-280849, etc.

In this method, a color-separated black-and-white halftone image composed of a plurality of sheets converted from color originals into color-separated halftone images is successively printed on one sheet of color paper by a method such as contact printing, and color development is performed. A color image formed by a dye formed from a coupler imagewise by color development is used as a proof image.

However, in this technique, when the color image is approximated to the printed matter, the density of the black image such as characters is insufficient as compared with the printed matter, and the density of the black image such as the characters is increased to approximate the density of the printed matter. If the measures are taken, there is a drawback that the degree of approximation of the color image of the printed matter deteriorates and it is difficult to satisfy both of them.

As a technique for improving this drawback, there has been conventionally known a technique in which, in addition to the yellow color forming layer, the magenta color forming layer and the cyan color forming layer, a fourth black plate layer having a spectral sensitivity different from any of the layers is provided. ing. Also, JP-A-2-289846 and 2-
No. 183251 discloses a technique for improving this problem. Further, JP-A-5-134350 discloses a technique for improving by using an emulsion having sensitivity to all of red, green and blue. However, this technique is especially affected by fluctuations in processing conditions such as processing pH, processing solution agitation, and running.
It has a drawback that the monochromatic halftone dot reproducibility of C tends to fluctuate.

[0012]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to prepare a color proof from halftone image information obtained by color separation and halftone image conversion using a silver halide color photographic light-sensitive material. Another object of the present invention is to provide a silver halide color photographic light-sensitive material for a color proof, which has stable halftone dot reproducibility even with a change in processing conditions and has an improved degree of approximation of image quality to a printed matter.

[0013]

The above object of the present invention has been achieved by the following constitution.

(1) It has a layer that mainly forms a yellow image, a layer that mainly forms a magenta image, and a layer that mainly forms a cyan image.
When the layers are set as the first and second layers, the image density of the first layer is the minimum density +0.2 in the main spectral sensitivity region of the first layer.
At least a combination in which the density of the image of the second layer is smaller than the density after development when exposed and developed with an exposure amount that is 1/10 to 10 times the exposure amount that gives A positive type silver halide color photographic light-sensitive material, wherein the hydrophilic colloid layer on the side having the image forming layer has a swelling degree of 120 to 160%.

(2) The positive-type silver halide color photographic light-sensitive material according to claim 1, wherein at least one of the image forming layer and the layer other than the image forming layer contains a nucleating agent.

(3) The positive type silver halide color according to claim 1 or 2, wherein a silver halide grain is contained in a non-photosensitive layer outside the image forming layer farthest from the support in the image forming layer. Photographic material.

The present invention will be described in detail below.

In the present invention, an internal latent image type silver halide emulsion in which the grain surface is not fogged in advance is used, and after image exposure, a fog treatment (nucleation treatment) is carried out, followed by surface development or image exposure. A positive image can be directly obtained by performing surface development while subjecting to fog treatment.

The above-mentioned fog treatment may be carried out by subjecting the entire surface to exposure, chemically sensitizing with a fog agent, using a strong developing solution, or by heat treatment. The emulsion containing the internal latent image type silver halide emulsion grains has a photosensitive nucleus mainly inside the silver halide grain, has a photosensitive nucleus inside upon exposure, and a latent image is formed inside the grain upon exposure. An emulsion containing silver halide grains as formed.

Various techniques are known in the technical field of the internal latent image type direct positive. For example, US Patent 2,59
2,250, 2,466,957, 2,497,875, 2,588,982
No. 3,761,266, No. 3,761,276, No. 3,796,577, and British Patent No. 1,151,363 are known.

Although the mechanism of forming a positive image is not always clear, for example, Photographic Science and Engineering (Photographic Science and Engineering)
andEngineering), Vol. 20, p. 158 (1976), describes as follows.

Photoelectrons generated in the silver halide crystal grains by imagewise exposure are selectively captured inside the grains to form an internal latent image. Since this internal latent image acts as an effective trap center for electrons in the conduction band, in the exposed particles, the electrons injected in the subsequent fog development process are trapped inside and assist the latent image. Become. In this case, the latent image is inside and therefore not developed by surface development. On the other hand, in particles that have not been subjected to image exposure, at least some of the injected electrons are captured on the surface of the particle and a latent image is formed there, so that the particle is developed by surface development.

The non-pre-fogged internal latent image type silver halide grain which can be used in the present invention mainly forms a latent image inside the silver halide grain, and most of the photosensitive nucleus is inside the grain. An emulsion having silver halide grains having any silver halide such as silver bromide, silver chloride,
It includes silver chlorobromide, silver chloroiodide, silver iodobromide, silver chloroiodobromide and the like.

Particularly preferably, the coated silver amount is about 1 to 3.5 g /
A portion of the sample coated on a transparent support so as to be in the range of m ² was exposed to a light intensity scale for a certain period of time from about 0.1 second to about 1 second, and was substantially silver halide. When only the surface image of a grain not containing a solvent is developed using the following surface developer A at 20 ° C. for 4 minutes, another part of the same emulsion sample is similarly exposed to give an image of the inside of the grain. Is an emulsion exhibiting a maximum density which is not more than 1/5 of the maximum density obtained when developed with the following internal developer B at 20 ° C. for 4 minutes. More preferably, the maximum density obtained with surface developer A is less than the maximum density obtained with internal developer B.
It is not greater than / 10.

(Surface developer A) Metol 2.5 g L-ascorbic acid 10.0 g Sodium metaborate (tetrahydrate) 35.0 g Potassium bromide 1.0 g Water was added 1000 cc (internal developer B) Metol 2.0 g Sodium sulfite ( Anhydrous) 90.0 g Hydroquinone 8.0 g Sodium carbonate (monohydrate) 52.5 g Potassium bromide 5.0 g Potassium iodide 0.5 g Water added 1000 cc Further, various internal latent image type silver halide emulsions preferably used in the present invention are available. Those prepared by the method of. For example, conversion type silver halide emulsions described in U.S. Pat.No. 2,592,250, or U.S. Pat.
No. 6, 3,317,322 and silver halide emulsions having internally chemically sensitized silver halide grains described in 3,367,778, or polyvalent metal ions described in U.S. Pat.Nos. 3,271,157 and 3,447,927. An emulsion having silver halide grains containing therein, or a silver halide emulsion in which the grain surface of the silver halide grains containing a dopant described in U.S. Pat. No. 3,761,276 is weakly chemically sensitized, or No. 50-8524, No. 50-38525, No. 53-2408, etc., and silver halide emulsions composed of grains having a laminated structure, and others described in JP-A Nos. 52-156614 and 55-127549. For example, a silver halide emulsion that has been used.

The internal latent image type silver halide grains preferably used in the present invention are silver halides having any halogen composition such as silver bromide, silver chloride, silver chlorobromide, silver chloroiodide and silver iodobromide. Any silver chloroiodobromide may be used. The grains containing silver chloride have excellent developability and are suitable for rapid processing.

The shape of the silver halide grains used in the present invention is cubic, octahedral, or a mixture of (100) and (111) faces.
It may be a tetrahedron, a shape having a (110) plane, a spherical shape, a flat shape, or the like. An average particle size of 0.05 to 3 μm can be preferably used. The grain size distribution may be a monodisperse emulsion having uniform grain size and crystal habit, or an emulsion having no uniform grain size or crystal habit, but a monodisperse silver halide emulsion having uniform grain size and crystal habit. Is preferred. In the present invention, the monodisperse silver halide emulsion means that the weight of silver halide contained within a grain size range of ± 20% around the average grain size rm is 60% or more of the total weight of silver halide grains. The content is preferably 70% or more, more preferably 80% or more. Here, the average particle size rm is the particle size ri
Is defined as the particle size ri when the product ni × ri ³ of the frequency ni and ri ³ of the particle having (3 significant digits, rounding down to the least significant digit 4) The grain size referred to here is the diameter of a spherical silver halide grain, or the grain diameter of a grain other than a spherical grain. It is the diameter when the projected image is converted into a circular image of the same area. The particle size can be obtained by, for example, enlarging the particles with an electron microscope at a magnification of 10,000 to 50,000 times and measuring the particle diameter on the print or the area at the time of projection (the number of measured particles is not measured). Discrimination shall be 1000 or more).

Particularly preferred highly monodisperse emulsions are those in which the breadth of distribution defined by (grain size standard deviation / mean grain diameter) × 100 = breadth of distribution (%) is 20% or less. Here, the average particle size and the particle size standard deviation are obtained from ri defined above.

The monodisperse emulsion is prepared by adding a water-soluble silver salt solution and a water-soluble halide solution to pAg and p in a gelatin solution containing seed grains.
It can be obtained by adding by the double jet method under the control of H 2. In determining the addition rate, reference can be made to JP-A-54-48521 and JP-A-58-49938. To obtain a more advanced monodisperse emulsion, see JP-A-60-12293.
The growth method in the presence of the tetrazaindene compound disclosed in No. 5 can be applied.

The degree of swelling on the image forming layer side of the light-sensitive material of the present invention can be determined as follows. That is, the hydrophilic colloid layer on the back side of the light-sensitive material having a specific area is peeled and removed. The weight at this time is W0. Immediately measure the weight by immersing the sample in pure water at 38 ° C. for 2 minutes to remove excess water. Let this weight be W1. The hydrophilic colloid layer on the image forming layer side is peeled off and the weight is measured. This weight is W2.

The degree of swelling can be calculated by ((W1-W0) / (W0-W2)) × 100 (%).

In the present invention, the degree of swelling of the hydrophilic colloid layer on the image forming layer side is 120 to 160%, more preferably 120 to 150%.

In the present invention, as a means for adjusting the degree of swelling to a desired value, it is possible to adjust the addition amount of the hardener, select the hardener, and select the conditions of the coating solution such as pH. Is. Further, the sensitive material after coating can be adjusted under the condition of heating and / or humidification.

Among the gelatin hardeners which can be preferably used in the present invention, the active halogen type refers to one containing a halogen atom capable of reacting with gelatin in the molecule, for example, US Pat.
732,303, British patent 932,998, French patent 1,296,928
And the compounds described in JP-B-47-6151 and the like. In addition, the active vinyl type curing agent is one containing a vinyl group capable of reacting with gelatin in the molecule, for example, Japanese Patent Publication No.
-13563, JP-A-49-73122, JP-A-49-73122, JP-A-51-446
No. 3, No. 52-21059, No. 53-41221, No. 53-57257, US Pat. No. 3,490,911 and the like.

Specific examples of gelatin hardening agents that can be preferably used in the present invention are shown below, but the invention is not limited thereto.

(Active halogen type curing agent)

[0037]

[Chemical 1]

(Active vinyl type curing agent)

[0039]

[Chemical 2]

In addition to the above-mentioned patents, these compounds are available as active halogen type compounds in Japanese Patent Publication Nos. 47-33380 and 54-2541.
No. 932,978, etc., and for the active vinyl type, Japanese Patent Publication Nos. 47-24259, 50-35807, and JP-A-49-244.
It can be synthesized according to the method described in No. 35, No. 59-18944, French Patent No. 1,491,807 and the like.

The amount of these hardeners added varies depending on the type of gelatin used, physical characteristics, photographic characteristics of the photographic light-sensitive material, processing conditions, etc., but is generally 0.05 to 20% by weight relative to gelatin in the coating solution. Is preferable, and more preferably 0.1 to 10% by weight. In that case, it is also possible to use together with other hardening agents as needed within the range which does not impair the effect of the present invention.

The curing agent may be added at any stage of preparing a coating solution for forming a gelatin film.

In the light-sensitive material of the present invention, a yellow image forming silver halide emulsion layer (hereinafter sometimes referred to as a yellow layer) and a magenta image forming silver halide emulsion layer (hereinafter sometimes referred to as a magenta layer). In addition to the cyan image-forming silver halide emulsion layer (hereinafter also referred to as a cyan layer), it may have a black image-forming silver halide emulsion layer (also referred to as a black layer).

In the light-sensitive material of the present invention, the yellow layer, the magenta layer and the cyan layer each contain a silver halide emulsion having different spectral sensitivity wavelength regions. It is sufficient that at any wavelength in the wavelength range of the spectral sensitivity of each layer, there is a wavelength exhibiting at least 4 times the sensitivity of the spectral sensitivity of the other layer, and preferably there is a wavelength exhibiting at least 8 times the sensitivity. Is preferred.

In the present invention, the black layer, in one preferred embodiment, has its spectral sensitivity in a wavelength region different from the spectral sensitivity wavelength region of each of the yellow layer, magenta layer and cyan layer. it can. That is,
For example, the yellow layer contains a blue-sensitive emulsion, the magenta layer contains a green-sensitive emulsion, the cyan layer contains a red-sensitive emulsion, and the black layer contains an infrared-sensitive emulsion. The combination of photosensitivity of each layer is not limited to this example and can be set arbitrarily.

Further, in another preferred embodiment of the present invention, the black layer has a spectral sensitivity having a common portion with the spectral sensitivity wavelength regions of the yellow layer, the magenta layer and the cyan layer. That is, a specific example will be described. The yellow layer contains a blue-sensitive emulsion, the magenta layer contains a green-sensitive emulsion, the cyan layer contains a red-sensitive emulsion, and the black layer contains a blue-sensitive emulsion.
It has a silver halide emulsion sensitive to both green and red. The combination of the photosensitivities of the respective layers is not limited to this example and can be set arbitrarily.

The silver halide color photographic light-sensitive material of the present invention has on the support a layer which mainly forms a yellow image, a layer which mainly forms a magenta image and a layer which mainly forms a cyan image, and among the three layers. Any two layers first,
When the second layer is set, the image density of the second layer when exposed and developed in the main spectral sensitivity region of the first layer at an exposure amount giving the first image density of minimum density +0.2, A positive type silver halide light-sensitive material having at least one combination having a density lower than the density after development when not exposed is preferable.

The silver halide color photographic light-sensitive material of the present invention has, on the support, a layer mainly forming a yellow image, a layer mainly forming a magenta image and a layer mainly forming a cyan image. Any two layers first,
When set as the second layer, the exposure amount of 1 which gives the minimum density +0.2 of the first image density in the main spectral sensitivity range of the first layer
A positive type silver halide silver halide photographic material having at least one combination in which the image density of the second layer when exposed and developed at 1/2 is lower than the density after development when not exposed. Is preferred.

The layer mainly forming a yellow image, the layer mainly forming a magenta image and the layer mainly forming a cyan image in the present invention are combined with silver halide having different spectral sensitivity wavelength regions. It is sufficient that at any wavelength in the wavelength range of the spectral sensitivity of each layer, there is a wavelength exhibiting at least 4 times the sensitivity of the spectral sensitivity of the other layer, and preferably there is a wavelength exhibiting at least 8 times the sensitivity. Is preferred. The main spectral sensitivity region in the present invention refers to such different spectral sensitivity wavelength regions.

For the sake of explanation, as one specific example, the first layer is a layer mainly containing a green-sensitive silver halide emulsion for forming a magenta image, and the second layer is a mainly cyan image containing a red-sensitive silver halide emulsion. When it is set as the layer to be formed, when exposure is performed by changing the exposure amount in the green exposure in the main photosensitive wavelength region of the first layer, the exposure amount at which the green density of the main magenta image shows a green density of +0.2 which is the minimum density. It is determined. At that exposure amount, the red density of the main cyan image of the second layer is smaller than the red density of the main cyan image of the second layer obtained by developing without performing the exposure. The concentration is preferably reduced by 0.05 or more, more preferably 0.10 or more. There is no particular limitation on the lower limit, but it is preferable that the lower limit is less than 0.7. More preferably, the width of decrease is less than 0.5.

The method of measuring the densities of the images of the first and second layers can be carried out as follows.

First, a method for measuring the image density of each image forming layer will be described. By measuring the blue light density, green light density, and red light density of the photosensitive material after development, the blue light component, green light component, and red light component of the image formed in each image forming layer are known in advance. The image density formed in each image forming layer can be determined assuming that it is composed of the combination of the image dyes. Thus, the density of the main image of each image forming layer is determined by measurement. The blue light component, the green light component, and the red light component of an image formed by one image forming layer are obtained by sequentially exposing another image by combining the following exposure conditions a to b, and then developing. You can That is, for example, the measurement of the image density of the yellow image-forming blue-sensitive silver halide emulsion layer in the above example will be described.

The main yellow image of the yellow image forming layer can be obtained by developing under the following exposure conditions (b) and (c), and the dye image formed in the yellow image forming layer can be obtained by measuring it with a densitometer. The blue light density component, the green light density component, and the red light density component can be obtained. Other color components of the dye image formed in the magenta image forming layer and each color component of the dye image formed in the cyan image forming layer can be similarly obtained.

(Exposure condition a) The exposure light is changed mainly with light having a wavelength in the main spectral sensitivity region of the yellow image forming layer of the light-sensitive material so that the blue light density of the main yellow image after the development processing becomes the minimum density. Exposure is performed with a limited exposure amount.

(Exposure condition b) The exposure amount is changed mainly by light having a wavelength in the main spectral sensitivity region of the magenta image forming layer of the light-sensitive material, and the green light density of the main magenta image after development processing becomes the minimum density. Exposure is performed with a limited exposure amount.

(Exposure condition c) A minimum amount of red light density of the main cyan image after development is the minimum density by changing the exposure amount mainly with light having a wavelength in the main spectral sensitivity region of the cyan image forming layer of the light-sensitive material. Exposure is performed with a limited exposure amount.

In the present invention, the above-mentioned yellow, magenta and cyan image forming silver halide emulsion layers each contain a silver halide emulsion having a spectral sensitivity having a common part with any emulsion having a spectral sensitivity wavelength region different from each other. Preferably.

In order to simplify the description, in the present specification, among the silver halide emulsions having different spectral sensitivities as described above, the silver halide emulsion contained in the yellow image forming layer is a Y emulsion or a magenta image forming layer. The silver halide emulsion contained in 1) will be referred to as M emulsion, and the silver halide emulsion contained in the cyan image forming layer will be referred to as C emulsion.
Further, a silver halide emulsion having a spectral sensitivity having a common part with any of the emulsions having different spectral sensitivity wavelength regions contained in the yellow, magenta and cyan image forming silver halide emulsion layers is referred to as a P emulsion. And

In the present invention, the P emulsion has a spectral sensitivity having a common region with the spectral sensitivity region of the Y emulsion,
Further, it has a partial sensitivity having a common part with the spectral sensitivity region of the M emulsion and a spectral sensitivity having a common part with the spectral sensitivity region of the C emulsion.

The ratio of the sensitivities of the Y emulsion and the P emulsion when exposed at any wavelength within the spectral sensitivity region of the Y emulsion is preferably in the range of 1/10 to 10. Similarly, the ratio of the sensitivities of the M emulsion and the P emulsion when exposed at any wavelength within the spectral sensitivity region of the M emulsion is preferably from 1/10 to 10.
Similarly, the sensitivity ratio of the C emulsion and the P emulsion when exposed at any wavelength within the spectral sensitivity region of the C emulsion is preferably 1
The range is / 10 to 10.

In one preferred embodiment of the present invention, the yellow image-forming layer contains a blue-sensitive silver halide emulsion, the magenta image-forming layer contains a green-sensitive silver halide emulsion layer, and the cyan image-forming layer. It contains a red-sensitive silver halide emulsion. Further, the yellow image forming emulsion layer contains a silver halide emulsion having sensitivity to any of blue light, green light and red light.

Similarly, the magenta image forming emulsion layer and the cyan image forming emulsion layer are mixed with a silver halide emulsion having sensitivity to any of blue light, green light and red light.

In another preferred embodiment, the yellow imaging layer contains a green sensitive silver halide emulsion,
The magenta image forming layer contains a red-sensitive silver halide emulsion layer and the cyan image forming layer contains an infrared-sensitive silver halide emulsion. Further, the yellow image forming emulsion layer contains a silver halide emulsion having sensitivity to any of green light, red light and infrared light. Similarly, the magenta image forming emulsion layer and the cyan image forming emulsion layer are mixed with a silver halide emulsion image having sensitivity to any of green light, red light and infrared light.

In yet another preferred embodiment, the yellow image-forming layer contains a blue-sensitive silver halide emulsion, the magenta image-forming layer contains an edge-sensitive silver halide emulsion layer and the cyan image-forming layer. It contains a red-sensitive silver halide emulsion. Further, in the yellow image forming layer and the cyan image forming layer, a silver halide emulsion having sensitivity to any of blue light, green light and red light is mixed.

In addition to the above combinations, Y emulsion, M
The color sensitivities of the emulsion and C emulsion can be freely selected, and if the color sensitivities are different from each other, any combination can be used. The P emulsion may be contained in at least one of the yellow layer, the magenta layer and the cyan layer.

The silver halide emulsion (P emulsion) having a spectral sensitivity having a common part with the spectral sensitivity of each of the yellow, magenta and cyan image forming silver halide emulsions of the present invention is realized by selecting a spectral sensitizing dye. You can do it. For example, an emulsion having sensitivity to any of blue light, green light and red light can be prepared by using, for example, a blue-sensitive sensitizing dye, a green-sensitive sensitizing dye and a red-sensitive sensitizing dye.

In one preferred embodiment of the present invention, the grain size of the silver halide is 0.1 μm to 0.6 μm for the red-sensitive layer emulsion.
μm, 0.15 μm to 0.8 μm for green-sensitive emulsions, and 0 for blue-sensitive emulsions.
A range of 3 to 1.2 μm can be preferably used.

The grain size of the P emulsion according to the present invention is not particularly limited, but is preferably 0.4 to 3.0 with respect to the maximum average grain size of the Y emulsion, M emulsion and C emulsion. Is preferred. More preferably, the ratio is 0.7 to 2.0.

The fog processing in the internal latent image type direct positive image formation preferably used in the present invention can be carried out by exposing the whole surface or by using a compound which generates fog nuclei, that is, a fogging agent.

The whole surface exposure is carried out by immersing the imagewise exposed light-sensitive material in a developing solution or other aqueous solution or moistening it and then uniformly exposing the whole surface. The light source used here may be any light source as long as it has light in the photosensitive wavelength region of the photographic light-sensitive material,
Further, high illuminance light such as flash light may be applied for a short time, or weak light may be applied for a long time. Further, the time of the whole surface exposure can be varied over a wide range so that the best positive image can be finally obtained depending on the photographic light-sensitive material, the development processing conditions, the kind of the light source used and the like. Further, it is most preferable that the exposure amount of the whole surface exposure is given in a predetermined range in combination with the light-sensitive material. Usually, when the exposure amount is excessively increased, the minimum density is increased or desensitized, and the image quality tends to be deteriorated.

Next, the fog agent preferably used in the present invention will be described.

A wide variety of compounds can be used as the fog agent used in the present invention, and the fog agent only needs to be present at the time of development processing, for example, in the constituent layers other than the support of the photographic light-sensitive material (among them, among them). In particular, it is preferably in a silver halide emulsion layer), or in a developing solution or a processing solution prior to the development processing. The amount used can be varied over a wide range according to the purpose. The preferable addition amount is 1 to 1,500 mg, preferably 10 to 1 mol per mol of silver halide when added to the silver halide emulsion layer. It is 1,000 mg. When it is added to a processing solution such as a developing solution, the addition amount is preferably 0.01 to 5 g / liter, particularly preferably 0.05 to 1 g / liter.

Examples of the fogging agent used in the present invention include hydrazines described in US Pat. Nos. 2,563,785 and 2,588,982, or hydrazides or hydrazine compounds described in US Pat. No. 3,227,552; US Pat.
Nos. 3,718,479, 3,719,494, 3,734,738 and 3,759,901, and heterocyclic quaternary nitrogen salt compounds; and silver halide surfaces such as acylhydrazinophenylthioureas described in U.S. Pat. No. 4,030,925. And a compound having an adsorption group for Further, these fogging agents can be used in combination. For example, RD1516 described above
No. 2 describes that a non-adsorption type fogging agent is used in combination with an adsorption type fogging agent, and this combination technique is also effective in the present invention.

As the fogging agent used in the present invention, either an adsorption type or a non-adsorption type can be used, or they can be used in combination.

Specific examples of useful fogging agents include hydrazine hydrochloride, 4-methylphenylhydrazine hydrochloride, 1-acetyl-2-phenylhydrazine, 1-formyl-2- (4-methylphenyl) hydrazine, 1 Hydrazine compounds such as -methylsulfonyl-2-phenylhydrazine, 1-methylsulfonyl-2- (3-phenylsulfonamidophenyl) hydrazine, 1-benzoyl-2-phenylhydrazine, and formaldehydephenylhydrazine; 3- (2-formylethyl ) -2-Methylbenzothiazolium bromide, 3- (2-acetylethyl) -2-benzyl-5-phenylbenzoxazolium bromide, 3- (2-acetylethyl) -2-benzylbenzoselenazolium bromide , 2-methyl-3- [3- (phenylhydrazino) propyl] benzothiazolium bromide, 1,2
-Dihydro-3-methyl-4-phenylpyrido [2,1-b] benzothiazolium bromide, 1,2-dihydro-3-methyl-4-phenylpyrido [2,1-b] benzoselenazolium bromide,
4,4'-Ethylenebis (1,2-dihydro-3-methylpyrido [2,1
-b] N-substituted quaternary cycloammonium salts such as benzothiazolium bromide; 5- (3-ethyl-2-benzothiazolinylidene) -3- [4- (2-formylhydrazino) phenyl] Rhodanine, 1,3-bis [4- (2-formylhydrazino) phenyl] thiourea, 7- (3-ethoxythiocarbonylaminobenzamide) -9-methyl-10-propargyl-1,2,3,4- Examples thereof include latrahydroacridinium trifluoromethanesulfonate, 1-formyl-2- [4- {3- (2-methoxyphenyl) ureido} phenyl] hydrazine and the like.

In addition, in the present invention, for example, Research Disclosure No. 22534 (January 1983) 50 to 5
4 pages, the same magazine, No. 15162 (November 1976) pages 76-77, No. 23510 (November 1983) pages 346-352, quaternary salt heterocyclic compounds and hydrazine compounds are used. it can. In the present invention, the nucleating agents described in the following publications can be preferably used. JP-A-3-155543
A quaternary heterocyclic compound represented by the general formula (N-I) described on pages 510 to 514 and a general formula (N-II) described on pages 60 to 65 of JP-A-3-95546. And hydrazine compounds.

Specific examples of particularly preferable compounds are shown below.

(F-1) 7- (3-cyclohexylmethoxythiocarbonylaminobenzamide) -10-propargyl
-1,2,3,4-Tetrahydroacridinium trifluoromethanesulfonate (F-2) 6- (3-ethoxythiocarbonylaminobenzamide) -1-propargyl-2,3-trimethylenequinolinium trifluoromethanesulfo Nato (F-3) 6-ethoxythiocarbonylamino-2-methyl-
1-Propargylquinolinium trifluoromethanesulfonate (F-4) 7- {3- (5-mercaptotetrazol-1-yl) benzamide} -10-propargyl-1,2,3,4-tetrahydroacridinium per Chlorate (F-6) 1-formyl-2- {4- {3- {3- {3- (5-mercaptotetrazol-1-yl) phenyl} ureido} benzsulfonamide} phenyl} hydrazine (F- 7) 1-formyl-2- {4- {3- {5-mercaptotetrazol-1-yl) benzenesulfonamide} phenyl} hydrazine (F-8) 7- (3-ethoxythiocarbonylaminobenzamide) -9- Methyl-10-propargyl-1,2,3,4-tetrahydroacridinium trifluoromethanesulfonate (F-9) 2- {4- {3- {3- {3- {5- {3- {2- Chloro-5- (1-dodecyloxycarbonylethoxycarbonyl) phenylcarbamoyl} -4-hydroxy-1-naphthylthio} tetrazole-1- Le} phenyl} ureido} benzenesulfonamide} phenyl} -1-formylhydrazine In the present invention, a silver halide is used in the non-photosensitive layer outside the image forming layer farthest from the support in the image forming layer. It is preferable to contain particles. The silver halide grains used herein preferably have an average grain size of 0.02 to 0.3 μm. The grain size distribution may be broad or may be so-called monodisperse silver halide grains having a uniform grain size. The halogen composition of silver halide is not limited and any one can be used. For example, silver bromide, silver chloride silver chlorobromide, silver chloroiodide, silver iodobromide, silver chloroiodobromide, etc. can be used. . The silver halide grains do not contribute to image formation. Therefore, the photosensitivity may be high or low.

The photographic light-sensitive material having a silver halide emulsion layer according to the present invention forms a positive image directly by imagewise exposure followed by full exposure or development in the presence of a fogging agent.

As the developer that can be used in the developer used for developing the photographic light-sensitive material according to the present invention,
Conventional silver halide developers, for example, polyhydroxybenzenes such as hydroquinone, aminophenols, 3-
Pyrazolidones, ascorbic acid and its derivatives, reductones, phenylenediamines, etc., or mixtures thereof are included. Specifically, hydroquinone, aminophenol, N-methylaminophenol, 1-phenyl-3-pyrazolidone, 1-phenyl-4,4-dimethyl-3-pyrazolidone,
1-phenyl-4-methyl-4-hydroxymethyl-3-pyrazolidone, ascorbic acid, N, N-diethyl-p-phenylenediamine, diethylamino-o-toluidine, 4-amino-3-methyl-N-ethyl-N -(β-Methanesulfonamidoethyl) aniline, 4-amino-3-methyl-N-ethyl-N- (β-hydroxyethyl) aniline, 4-amino-N-ethyl-N- (β-hydroxyethyl) aniline , 4-amino-3-methyl-N-ethyl-N-
(γ-hydroxypropyl) aniline and the like can be mentioned. It is also possible to incorporate these developers in the emulsion in advance so that they act on the silver halide during immersion in a high pH aqueous solution.

In the silver halide photographic light-sensitive material of the present invention, known photographic additives can be used.

Known photographic additives include, for example, the compounds described in RD17643 and RD18716 shown below.

Additive RD17643 RD18716 Page Classification Page Classification Chemical sensitizer 23 III 648 Upper right sensitizing dye 23 IV 648 Upper right development accelerator 29 XXI 648 Upper right antifoggant 24 VI 649 Lower right stabilizer Stabilization 〃 Color staining prevention Agent 25 VII 650 Left-right Image stabilizer 25 VII UV absorber 25-26 VII 649 Right-650 left Filter dye 〃 〃 Whitening agent 24 V Hardening agent 26 X 651 Right Coating aid 26-27 XI 650 Right interface Activator 26-27 XI 650 Right Plasticizer 27 XII 650 Right Sliding agent 〃 〃 Static inhibitor 〃 〃 Matting agent 28 XVI 650 Right binder 29 IX 651 Right In the emulsion layer of the light-sensitive material of the present invention, a color developing agent is used. It is possible to use a dye-forming coupler which forms a dye by a coupling reaction with the oxidant. The dye-forming couplers are usually selected so that a dye that absorbs the light of the light-sensitive spectrum of the emulsion layer is formed for each emulsion layer. A magenta dye forming coupler is used in the sensitive emulsion layer and a cyan dye forming coupler is used in the red sensitive emulsion layer. However, the silver halide color photographic light-sensitive material may be prepared by a method different from the above combination depending on the purpose.

[0084]

【Example】

Example 1 Corona discharge was applied to both front and back sides of a base paper having a basis weight of 80 g / m ² , and the surface thereof was made of high density polyethylene containing anatase type titanium dioxide at a concentration of 15% by extrusion coating and had a thickness of 27 μm. A resin coating layer was formed, and a polyethylene resin coating layer having an upper and lower two-layer structure was formed on the back surface thereof by a coextrusion coating method to obtain a support.

On the obtained support, each layer having the constitution shown below was coated on the side of the polyethylene layer containing titanium oxide, and the back side was coated on the back side thereof to obtain a multilayer silver halide color photograph. A light-sensitive material was prepared.

(Preparation of Emulsion EM-1) While controlling the aqueous solution containing ossein gelatin at 40 ° C., the aqueous solution containing ammonia and silver nitrate and potassium bromide and sodium chloride (molar ratio KBr: NaCl = 95: 5). ) Is added at the same time by the control double jet method to obtain a particle size of 0.30
A μm cubic silver chlorobromide core emulsion was obtained. At that time, pH and pAg were controlled so as to obtain a cubic particle shape. An aqueous solution containing ammonia and silver nitrate and an aqueous solution containing potassium bromide and sodium chloride (molar ratio KBr: NaCl = 40: 60) were simultaneously added to the obtained core emulsion by the control double jet method to obtain average grains. Diameter 0.42 μm
Formed with a shell until. At that time, pH and pAg were controlled so as to obtain a cubic particle shape.

After washing with water to remove the water-soluble salt, gelatin was added to obtain an emulsion EM-1. The breadth of distribution of this emulsion EM-1 was 8%.

(Preparation of Emulsion EM-2) While controlling the aqueous solution containing ossein gelatin at 40 ° C., the aqueous solution containing ammonia and silver nitrate and potassium bromide and sodium chloride (molar ratio KBr: NaCl = 95: 5). ) Is added at the same time by the control double jet method to obtain a particle size of 0.18
A μm cubic silver chlorobromide core emulsion was obtained. At that time, pH and pAg were controlled so as to obtain a cubic particle shape. An aqueous solution containing ammonia and silver nitrate and an aqueous solution containing potassium bromide and sodium chloride (molar ratio KBr: NaCl = 40: 60) were simultaneously added to the obtained core emulsion by the control double jet method to obtain average grains. Diameter 0.25 μm
Formed with a shell until. At that time, pH and pAg were controlled so as to obtain a cubic particle shape.

After washing with water to remove the water-soluble salt, gelatin was added to obtain an emulsion EM-2. The breadth of distribution of this emulsion EM-2 was 8%.

(Preparation of Blue-Sensitive Emulsion EM-B) After sensitizing sensitizing dye S-1 to EM-1, 600 mg of T-1 was added per mol of silver to obtain blue-sensitive emulsion EM-B. It was made.

(Preparation of Green Sensitive Emulsion EM-G) A green sensitive emulsion EM-G was prepared in the same manner as the blue sensitive emulsion except that the sensitizing dye S-2 was added to EM-2 for color sensitization.

(Preparation of Red-Sensitive Emulsion EM-R) A red-sensitive emulsion EM-R was prepared in the same manner as the blue-sensitive emulsion except that sensitizing dyes S-3 and S-4 were added to EM-2 for color sensitization. It was made.

(Preparation of pan-sensitive emulsion EM-P) Same as the blue-sensitive emulsion except that sensitizing dyes S-1, S-2, S-3 and S-4 were added to EM-1 for color sensitization. Pan-sensitive emulsion EM-
P was prepared.

T-1: 4-hydroxy-6-methyl-1,3,3a,
7-Tetrazaindene

[0095]

[Chemical 3]

Using the above EM-B, EM-G and EM-R, color photographic light-sensitive materials A1 to A4 having the following constitution were prepared. From the first layer to the tenth layer on the surface of the paper support prepared above.
The layer was coated on the back side with an eleventh layer having the following constitution. SA-1 and SA-2 were used as coating aids, and H-1 and H-2 were used as hardeners. Here, the amount of hardener is adjusted to adjust the swelling degree to the following values.
I got A4.

SA-1: sulfosuccinic acid di (2-ethylhexyl) ester sodium SA-2: sulfosuccinic acid di (2,2,3,3,4,4,5,5-octafluoropentyl) ester Sodium H-1: 2,4-dichloro-6-hydroxy-s-triazine
Sodium H-2: Tetrakis (vinylsulfonylmethyl) methane layer composition Coating amount (g / m ² ) 10th layer Gelatin 0.78 (UV absorbing layer) UV absorber (UV-1) 0.065 UV absorber (UV-2 ) 0.120 UV absorber (UV-3) 0.160 Oil-soluble dye 1 0.5 × 10 ^-3 Oil-soluble dye 2 0.5 × 10 ^-3 Solvent (SO-2) 0.1 Silica matting agent 0.03 9th layer Gelatin A 1.43 (blue sensitive layer) ) Blue-sensitive emulsion EM-B (coated silver amount) 0.5 Yellow coupler (YC-1) 0.82 Anti-staining agent (AS-2) 0.025 Solvent (SO-1) 0.82 Inhibitor (ST-1, ST-2, T-) 1) Eighth layer Gelatin A 0.54 (intermediate layer) Anti-color mixing agent (AS-1, AS-3, AS-4 equivalent) 0.055 Solvent (SO-2) 0.072 Anti-irradiation dye (AI-3) 0.03 7th layer Gelatin A 0.42 (yellow yellow colloidal silver 0 .03 Colloidal silver layer) Color mixing inhibitor (AS-1, AS-3, AS-4 equivalent) 0.04 Solvent (SO-2) 0.049 Polyvinylpyrrolidone (PVP) 0.047 6th layer Gelatin A 0.54 (Intermediate layer) Color mixing prevention Agent (AS-1, AS-3, AS-4 equivalent) 0.055 Solvent (SO-2) 0.072 Fifth layer Gelatin A 1.43 (green sensitive layer) Green sensitive emulsion EM-G (coated silver amount) 0.50 Magenta coupler ( MC-1) 0.25 Yellow coupler (YC-2) 0.06 Anti-staining agent (AS-2) 0.019 Solvent (SO-1) 0.31 Inhibitor (ST-1, ST-2, T-1) 4th layer Gelatin A 0.75 (Intermediate layer) Anti-color mixing agent (AS-1, AS-3, AS-4 equivalent) 0.055 Solvent (SO-2) 0.072 Irradiation prevention dye (AI-1) 0.03 Irradiation prevention dye (AI-2) 0.03 3rd layer Gelatin A 1.38 (red sensitive layer) Red sensitive emulsion E -R (Amount of coated silver) 0.30 Cyan coupler (CC-2) 0.44 Solvent (SO-1) 0.31 Stain inhibitor (AS-2) 0.015 Inhibitor (ST-1, ST-2, T-1) Second layer Gelatin A 0.54 (Intermediate layer) Anti-color mixing agent (AS-1, AS-3, AS-4 equivalent) 0.055 Solvent (SO-2) 0.072 First layer Gelatin A 0.54 (HC layer) Black colloidal silver 0.08 Polyvinylpyrrolidone ( PVP) 0.03 11th layer Gelatin 6.00 (Back layer) Silica matting agent 0.65 The amount of silver coated is in terms of silver.

[0098]

[Chemical 4]

The above EM-B, EM-G, EM-R and E
Color photographic light-sensitive material B1 having the following constitution using MP
B4 was created from. The first to tenth layers were coated on the front surface of the paper support prepared above and the eleventh layer was coated on the back surface in the following constitution. SA-1 and SA-2 were used as coating aids, and H-1 and H-2 were used as hardeners. Here, the addition amount of the hardening agent was adjusted to obtain Samples A1 to A4 whose swelling degree became the following value.

Layer composition Coating amount (g / m ² ) 10th layer Gelatin 0.78 (UV absorbing layer) UV absorber (UV-1) 0.065 UV absorber (UV-2) 0.120 UV absorber (UV-3) ) 0.160 oil-soluble dye 1 0.5 × 10 ^-3 oil-soluble dye 2 0.5 × 10 ^-3 solvent (SO-2) 0.1 silica matting agent 0.03 9th layer gelatin A 1.43 (blue sensitive layer) blue sensitive emulsion EM-B (coating) Silver amount) 0.4 Pan-sensitive emulsion EM-P (coated silver amount) 0.10 Yellow coupler (YC-1) 0.82 Anti-stain agent (AS-2) 0.025 Solvent (SO-1) 0.82 Inhibitor (ST-1, ST-2) , T-1) Eighth layer Gelatin A 0.54 (Intermediate layer) Color mixture inhibitor (AS-1, AS-3, AS-4 equivalent) 0.055 Solvent (SO-2) 0.072 Anti-irradiation dye (AI-3) 0.03 7th layer Gelatin A 0.42 (yellow yellow colloidal silver 0.03 colloidal silver layer) Mixed color Sealing agent (AS-1, AS-3, AS-4 eq)
0.04 Solvent (SO-2) 0.049 Polyvinylpyrrolidone (PVP) 0.047 Sixth layer Gelatin A 0.54 (Intermediate layer) Color mixture inhibitor (AS-1, AS-3, AS-4 equivalent) 0.055 Solvent (SO-2 ) 0.072 Fifth layer Gelatin A 1.43 (green-sensitive layer) Green-sensitive emulsion EM-G (coated silver amount) 0.40 Pan-sensitive emulsion EM-P (coated silver amount) 0.10 Magenta coupler (MC-1) 0.25 Yellow coupler (YC-) 2) 0.06 Anti-staining agent (AS-2) 0.019 Solvent (SO-1) 0.31 Inhibitor (ST-1, ST-2, T-1) Fourth layer Gelatin A 0.75 (Intermediate layer) Anti-color mixing agent (AS- 1, AS-3, AS-4 equivalent) 0.055 Solvent (SO-2) 0.072 Anti-irradiation dye (AI-1) 0.03 Anti-irradiation dye (AI-2) 0.03 Third layer Gelatin A 1.38 (red sensitive layer) ) Red-sensitive emulsion EM-R (amount of coated silver) 0.24 Emulsion EM-P (coating silver amount) 0.06 Cyan coupler (CC-2) 0.44 Solvent (SO-1) 0.31 Stain inhibitor (AS-2) 0.015 Inhibitor (ST-1, ST-2, T-1) 2nd layer Gelatin A 0.54 (intermediate layer) Anti-color mixing agent (AS-1, AS-3, AS-4 equivalent) 0.055 Solvent (SO-2) 0.072 1st layer Gelatin A 0.54 (HC layer) Black colloidal silver 0.08 Polyvinylpyrrolidone (PVP) 0.03 11th layer Gelatin 6.00 (backside layer) Silica matting agent 0.65 The amount of coated silver is calculated in terms of silver.

The materials added to the layers are shown below.

SO-1: trioctyl phosphate SO-2: dioctyl phthalate AS-1: 2,4-di-t-octylhydroquinone AS-2: 2,4-di-t-butylhydroquinone AS-4, AS- 3, AI-1, AI-2, AI-3 ST-1: 1- (3-acetamidophenyl) -5-mercaptotetrazole ST-2: N-benzyladenine

[0103]

[Chemical 5]

[0104]

[Chemical 6]

[0105]

[Chemical 7]

Samples C1 to C4 were prepared in the same manner as the samples A1 to A4 prepared above. In Samples C1 to C4, the third layer red-sensitive layer, the fifth layer green-sensitive layer, and the ninth layer blue-sensitive layer contained 10% to ³ % by weight of F-8 and F-9 as a nucleating agent with respect to silver halide. Samples were prepared in the same manner as A1 to A4 except that 10 ^-2 wt% was used.

Further, in exactly the same manner as the samples D1 to D4,
Created E1 to E4. In samples E1 to E4, the average particle size is in the 10th layer
A cubic silver chloride emulsion of 0.20 μm was prepared in the same manner as D1 to D4 except that 0.05 g (in terms of silver) was added so as to have a coating amount.

Samples D1 to D4 were prepared in the same manner as the samples B1 to B4 prepared above. Sample third Soaka sensitive layer in D1 to D4, the fifth Somidori sensitive layer, ^10-3 wt% with respect to silver halide the F-8 and F-9 as nucleating agent in the ninth Soao sensitive layer, 10 ^-2 % by weight
Samples were prepared in exactly the same manner as B1 to B4 except that they were used respectively.

To each of the samples A1 to E4 obtained above, a black plate and a cyan plate of a halftone original document were brought into close contact with each other and exposed under the following exposure condition-1. Then, the black plate and the magenta plate were brought into close contact with each other and exposed under the exposure condition-2 shown below. Further, the black plate and the yellow plate were brought into close contact with the sample and exposed under the exposure condition-3 shown below.

(Exposure condition-1) Each light-sensitive material was passed through a red filter (Ratten No. 26) and an ND filter to adjust the ND filter density when white light was exposed,
0.5 at minimum exposure to minimize red light density after development
Expose for 2 seconds.

(Exposure condition-2) Each light-sensitive material was passed through a green filter (Ratten No. 58) and an ND filter to adjust the ND filter density when exposing white light,
0.5 at minimum exposure to minimize density of green light after development
Expose for 2 seconds.

(Exposure condition-3) Each light-sensitive material was passed through a blue filter (Ratten No. 47B) and an ND filter to adjust the ND filter density when white light was exposed.
0.5 at minimum exposure to minimize blue light density after development
Expose for 2 seconds.

A part of each of the exposed samples was processed under the following processing condition-1. However, although the samples A1 to A4 and the samples B1 to B4 were subjected to fogging exposure, the entire surface of the photosensitive material was uniformly exposed through the developing solution having a thickness of 3 mm while being immersed in the developing solution. Samples C1-C4 and Samples D1-D4
Processing was carried out without any fogging exposure and instead immersed in the developer for that time.

The remaining part of each of the exposed samples was processed under processing condition-2 according to processing condition-1.
However, under the processing condition-2, the processing was performed in exactly the same manner as the processing condition-1 except that the temperature of the developing solution was lowered by 2 ° C. and the pH of the color developing solution was adjusted to 9.15.

Processing Conditions-1 Temperature Time Immersion (Developer) 37 ° C. 12 seconds Fog exposure-12 seconds (A1 to A4, B1 to B4: 1 lux) (C1 to C4, D1 to D4: No irradiation) Development 37 ℃ 95 seconds Bleaching fixing 35 ℃ 45 seconds Stabilization treatment 25-30 ℃ 90 seconds Drying 60-85 ℃ 40 seconds Composition of processing solution (color developing solution) Benzyl alcohol 15.0 ml Cerium sulfate 0.015 g Ethylene glycol 8.0 ml Potassium sulfite 2.5 g Potassium bromide 0.6g Sodium chloride 0.2g Potassium carbonate 25.0g T-1 0.1g Hydroxylamine sulfate 5.0g Diethylenetriamine sodium pentaacetate 2.0g 4-Amino-N-ethyl-N- (β-hydroxyethyl) 4.5g Aniline Sulfate optical brightener (4,4'-diaminostilbenedisulphonic acid derivative) 1.0 g Potassium hydroxide 2.0 g Diethylene glycol 15.0 ml Add water to bring the total volume to 1 liter and adjust the pH to 10.15.

(Bleach-fixing solution) Diethylenetriamine ferric ammonium acetate 90.0 g Diethylenetriamine pentaacetic acid 3.0 g Ammonium thiosulfate (70% aqueous solution) 180 ml Ammonium sulfite (40% aqueous solution) 27.5 ml 3-Mercapto-1,2,4-triazole Adjust the pH to 7.1 with 0.15 g potassium carbonate or glacial acetic acid and add water to make the total volume 1 liter.

(Stabilizing Solution) o-Phenylphenol 0.3 g Potassium sulfite (50% aqueous solution) 12 ml Ethylene glycol 10 g 1-Hydroxyethylidene-1,1-diphosphonic acid 2.5 g Bismuth chloride chloride 0.2 g Zinc sulfate heptahydrate 0.7 g Water Ammonium oxide (28% aqueous solution) 2.0 g Polyvinylpyrrolidone (K-17) 0.2 g Fluorescent brightener (4,4'-diaminostilbenedisulfonic acid derivative) 2.0 g Add water to bring the total volume to 1 liter and add ammonium hydroxide or Adjust the pH to 7.5 with sulfuric acid. The stabilization process is 2
A counter-current system with a tank configuration was adopted.

From the chart obtained by development, Y, M, C
The dot area of the portion where the dot area ratio of the original film of each color was 50% was measured with a dot meter. The obtained results are shown in Table 1.

[0119]

[Table 1]

From the above results, it can be seen that the sample of the present invention is stable because the reproducibility of halftone dots is hardly affected even when a process variation occurs.

[0121]

According to the constitution of the present invention, it is possible to obtain a light-sensitive material which is not easily affected by the reproducibility of halftone dots even when a process variation occurs.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G03C 1/825 5/08 7/20 G03F 3/10 B 7369-2H

Claims (3)

[Claims] 1. A layer mainly forming a yellow image,
It has a layer mainly forming a magenta image and a layer mainly forming a cyan image, and when any two layers of the three layers are set as the first and second layers, the main spectral sensitivity of the first layer In the area, when the image is exposed and developed with an exposure amount that is 1/10 to 10 times the exposure amount that gives the minimum density +0.2, the image density of the second layer is The positive type is characterized in that it has at least one combination which is smaller than the density after development when not performing, and the swelling degree of the hydrophilic colloid layer on the side having the image forming layer is 120 to 160%. Silver halide color photographic light-sensitive material. 2. The positive type silver halide color photographic light-sensitive material according to claim 1, wherein at least one of the image forming layer and the layer other than the image forming layer contains a nucleating agent. 3. The positive-working silver halide color photograph according to claim 1, wherein a silver halide grain is contained in a non-photosensitive layer outside the image forming layer farthest from the support in the image forming layer. Photosensitive material.