JPH0743860A - Color image forming method and silver halide color photographic sensitive material used therefor - Google Patents

Abstract

PURPOSE:To obtain a color proof having photographic color-developed image hue and a black background approximated to a color print and superior in gray dot gradation reproduction (dot gain). CONSTITUTION:The silver halide color photographic sensitive material has at least each one of yellow and magenta and cyan image forming silver halide emulsion layers on a support, and contains an emulsion sensitive to all the red, green, and blue lights, and the color image is formed by exposing a yellow dot image film and a black dot image film to a first light, a magenta dot image film and a black dot image film to a second light, and a cyan dot image film and a black dot image film to a third light, (each light is different from each other in the wavelength region), and further exposing the black dot image films in one or more times.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color 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 an image forming method and a 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 simply by stacking film sheets of four colors (primary color of subtractive color mixture and black). 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. This method is an effective means in obtaining an image similar to a printed matter, however, it is necessary to newly provide a black plate layer, the thickness of the emulsion layer is increased, and the halftone dot is caused by deterioration of sharpness. There is a problem in that reproducibility is deteriorated, physical properties such as curl are deteriorated, manufacturing cost is increased, and when the black plate layer is processed by separate exposure, it takes a lot of processing steps.

As means for solving these problems, Japanese Patent Laid-Open No. 5-13
In No. 450, we effectively utilize the overlap of the single color densities of yellow, magenta and cyan, and add a slight density to it.
A technique has been proposed in which the density of a black background is increased and a color proof image is obtained with three exposures. According to this patent, the number of exposure processing steps is certainly three, and the cost,
It is expected that problems such as sharpness will be resolved. However, in recent trends, it has been desired to obtain a stable and high-quality color proof, and according to this method, there is a big drawback that sufficient gray gradation cannot be reproduced in a high density portion. I found out that Especially, it was fatal that the color and tone of hair could not be reproduced well.

[0013]

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a color proof which has a photographic color image hue and a black background similar to those of a printed matter and which is excellent in reproduction of gray halftone dots (dot gain). And a silver halide color photographic light-sensitive material.

[0014]

The above object of the present invention can be achieved by the following constitution.

1. On the support at least one yellow image-forming silver halide emulsion layer, at least one magenta image-forming silver halide emulsion layer, at least one
A silver halide color photographic light-sensitive material having a cyan image forming silver halide emulsion layer and containing an emulsion having color sensitivity to all of red light, green light and blue light. Exposure with the first light through the plate halftone image film and black halftone dot image film, exposure with the second light through the magenta plate image film and black halftone dot image film, and cyan halftone dot image film and black ink Exposure by the third light through the plate halftone image film (however, the first light,
The second light and the third light have different wavelength ranges from each other, and are exposed one or more times through a black halftone dot image film, and then a color image is formed. Forming method.

2. In the silver halide color photographic light-sensitive material processed by the color image forming method, the cyan image forming layer, the magenta image forming layer and the yellow image forming layer each contain an emulsion having different color sensitivity, and at least each image forming layer is formed. A halogenation characterized in that one layer contains an emulsion having sensitivity to all light of red light, green light and blue light having a sensitivity of 1.5 times or more as high as that of the emulsion in an arbitrary wavelength. Silver color photographic light-sensitive material.

3. In the silver halide color photographic light-sensitive material processed by the color image forming method, the cyan image forming layer, the magenta image forming layer and the yellow image forming layer each contain an emulsion having different color sensitivity, and have a sensitivity at an arbitrary wavelength. Red light with a sensitivity 1.5 times higher than that of the emulsion,
A silver halide color photographic light-sensitive material comprising at least one layer containing an emulsion having color sensitivity to all light of green light and blue light.

The present invention will be described in more detail below.

In the present invention, a layer mainly forming a yellow image (hereinafter sometimes referred to as a yellow layer) means that the dye image is absorbed by 42 when the image formation of the layer is carried out.
Has at least one absorption maximum between 0 nm and 490 nm, and 45
Absorption at 0 nm is at least 1.5 times greater than absorption at 550 nm or 650 nm. In the present invention, the layer mainly forming a yellow image may contain an optional auxiliary image dye in addition to the yellow image dye.

In the present invention, the layer mainly forming a magenta image (hereinafter sometimes referred to as a magenta layer) means that when the image formation of the layer is performed, the absorption of the dye image is 5%.
It has at least one absorption maximum between 20 nm and 590 nm, and has an absorption at 550 nm of at least 1.5 times or more than that at 450 nm or 650 nm. In the present invention, the layer mainly forming a magenta image may contain any auxiliary image dye in addition to the magenta image dye.

In the present invention, a layer mainly forming a cyan image (hereinafter sometimes referred to as a cyan layer) means that the dye image has an absorption of 620 nm when the image is formed on the layer.
Has at least one absorption maximum at ~ 690nm and 650nm
The absorption at is at least 1.5 times or more than that at 450 nm or 550 nm. In the present invention, the layer mainly forming a cyan image may contain a cyan image dye as well as any auxiliary image dye.

The yellow, magenta and cyan images of the present invention may be dye images formed by color development, diffusion transfer images or dye images obtained by the silver dye bleaching method.

In the present invention, the layer mainly forming a yellow image, the layer mainly forming a magenta image and the layer mainly forming a cyan image are combined with silver halide having different spectral sensitivity wavelength regions from each other. It is more preferable that at any wavelength in the wavelength range of the spectral sensitivity of each layer, there is at least 8 times the sensitivity that shows at least 4 times the sensitivity of the other layers. Is more preferable. In the present invention, the main spectral sensitivity region refers to these mutually different spectral sensitivity wavelength regions, and exposure can be performed using a light source having a spectral energy distribution within this wavelength region.

As the color light-sensitive material of the present invention, any light-sensitive material can be used as long as it is a silver halide color photographic light-sensitive material capable of forming a positive image. As an example, a direct positive type silver halide color photographic material capable of forming a coloring dye by coupling with an oxidized product of a color developing agent can be used. Still another preferable example is a reversal sensitive material capable of forming a positive image by reversal processing. In yet another example, a silver dye bleaching type light-sensitive material can be preferably used. In the present invention, the yellow layer,
The magenta layer and the cyan layer have different main spectral sensitivities.

Emulsions contained in the yellow layer, the magenta layer, and the cyan layer and having different main spectral sensitivity regions are referred to as Y emulsion, M emulsion, and C emulsion, respectively. An emulsion having color sensitivity to all of red light, green light and blue light is referred to as a P emulsion here. In the present invention, the P emulsion is contained in at least one of the yellow layer, the magenta layer and the cyan layer, or one or more layers containing the P emulsion can be provided separately.

The spectral sensitivity of the P emulsion is, for example, assuming that the P emulsion is mixed with the Y emulsion, and the ratio of the sensitivity of the Y emulsion and the P emulsion when exposed at an arbitrary wavelength within the spectral sensitivity region of the yellow layer is as follows. It is preferably in the range of 1/10 to 10:10. Similarly, M
M when exposed at an arbitrary wavelength within the spectral sensitivity region of the emulsion
The ratio of the sensitivity of the emulsion to that of the P emulsion is preferably in the range of 1/10 to 10. Similarly, the ratio of the sensitivities of the C emulsion and the P emulsion when exposed at any wavelength within the spectral sensitivity region of the C emulsion is preferably in the range of 1/10 to 10.

In the present invention, a Y emulsion, an M emulsion or a C emulsion and a P emulsion when exposed at an arbitrary wavelength within the spectral sensitivity region of the yellow layer, the spectral sensitivity region of the magenta layer or the spectral sensitivity region of the cyan layer. The sensitivity ratio is preferably 1.5 or more, more preferably 2 or more.

In one preferred embodiment of the invention, the yellow layer contains a blue-sensitive silver halide emulsion, the magenta layer contains a green-sensitive silver halide emulsion and the cyan layer contains a red-sensitive silver halide emulsion. is doing. Further, the yellow layer has a sensitivity to any of blue light, green light, and red light, and particularly, the sensitivity to red light is 1.5 times or more that of a red-sensitive silver halide emulsion. Emulsion mixed.

In one example of another preferred embodiment of the present invention, the yellow layer contains a blue-sensitive silver halide emulsion, the magenta layer contains a green-sensitive silver halide emulsion, and the cyan layer contains a red-sensitive silver halide emulsion. Contains. Further, one layer other than the above three layers has sensitivity to blue, green, and red sensitivities, and the sensitivity in red light is 1.5 times or more that of red-sensitive silver halide emulsions. It contains a silver halide emulsion and a material which forms a black color after processing.

The material forming a black color includes a black coupler, and a mixture of materials which become yellow, magenta and cyan dyes after development processing in a normal silver halide color photograph.

In one example of another preferred embodiment of the present invention, the yellow layer contains a blue-sensitive silver halide emulsion,
The magenta layer contains a green-sensitive silver halide emulsion and the cyan layer contains a red-sensitive silver halide emulsion. Further, the three layers other than the above three layers are sensitive to blue light, green light and red light, and the sensitivity to red light is 1.5 times or more that of red-sensitive silver halide emulsions. And silver halide emulsions each having a yellow, magenta,
Contains a material that forms a cyan image.

In addition to the above-described embodiments, the color sensitivity of the silver halide emulsion of the yellow layer, the halogenated emulsion of the magenta and the halogenated emulsion of the cyan layer can be freely selected, and the color sensitivities of the two layers are mutually sensitive. Any combination of sexes can be taken.

In the image forming method of the present invention, the positive type silver halide light-sensitive material as described above is exposed to first light through a yellow plate halftone dot image film and a black plate halftone dot image film, and a magenta plate halftone dot is exposed. 1 through the second exposure through the image film and the black halftone dot image film, through the third light through the cyan halftone dot image film and the black halftone dot image film and through the black halftone dot image film 1 After exposure is performed more than once, an image can be formed by the image forming means. In addition, the light having the same wavelength as the first light, the second light, and / or the third light can be used for the exposure performed only through the black halftone dot image film. The above-mentioned first light, second light, and third light are preferably in the visible light range, and are not particularly limited as long as they have wavelength regions different from each other. The color can be selected according to the color sensitivity of the color-forming layer to be colored, and red light, green light, and blue light can be conveniently used.

As the silver halide emulsion used in the present invention, any silver halide emulsion can be used as long as a positive image can be obtained as an image obtained by development. A surface latent image type silver halide emulsion that forms a latent image on the surface by image exposure may be used, and a silver halide emulsion that forms a negative silver image by developing may be used. Also, using an internal latent image type silver halide emulsion in which the grain surface is not previously fogged, fog treatment (nucleation treatment) is performed after image exposure, and then surface development is performed, or fog treatment is performed after image exposure. However, those which can directly obtain a positive image by carrying out surface development can be preferably used.

The above-mentioned fog treatment may be performed by exposing the entire surface, chemically using a fog agent, using a strong developing solution, or by heat treatment. . The emulsion containing the internal latent image type silver halide emulsion grains is a silver halide having a photosensitive nucleus mainly inside the silver halide crystal grains and forming a latent image inside the grains upon exposure. A grain-containing emulsion.

Various techniques have been known so far in the technical field of the internal latent image type direct positive. For example, U.S. Patents 2,592,250, 2,466,957, 2,497,875,
2,588,982, 3,761,266, 3,761,276, 3,7
The methods described in 96,577 and British Patent 1,151,363 are known.

The mechanism of forming a positive image is not necessarily clear, but for example, Photographic Science and Engineering (Photographic Scien
ce and Engineering, Vol. 20, p. 158 (1976), describes as follows.

The photoelectrons generated in the silver halide crystal grains by the 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 grains which can be used in the present invention form a latent image mainly inside the silver halide grains and have most of the photosensitive nuclei inside the grains. An emulsion having silver halide grains, comprising 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 the transparent support so as to be in the range of 1 / m ² is exposed to the light intensity scale for a predetermined time from about 0.1 second to about 1 second, and is substantially halogenated. When only the surface image of a grain not containing a silver solvent is developed using the following surface developer A at 4 ° C. for 4 minutes, another part of the same emulsion sample is similarly exposed and It is an emulsion showing a maximum density which is not larger than ⅕ of the maximum density obtained when the image is developed with the following internal developer B at 20 ° C. for 4 minutes. More preferably, the maximum density obtained using surface developer A is no greater than 1/10 of the maximum density obtained with internal developer B.

(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 to 1000 ml (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 ml Also, various internal latent image type silver halide emulsions preferably used in the present invention can be used. Those prepared by the method of.

Conversion type silver halide emulsions described in, for example, US Pat. No. 2,592,250, or US patents
No. 3,206,316, No. 3,317,322 and No. 3,367,778, and silver halide emulsions having internally chemically sensitized silver halide grains, or U.S. Pat.
47,927 and 3,53,291, emulsions having silver halide grains containing polyvalent metal ions, or silver halide grains containing a doping agent described in U.S. Pat. A silver halide emulsion in which the grain surface is weakly chemically sensitized, or JP-A-50-8524 and 50-38525.
And silver halide emulsions composed of grains having a laminated structure described in JP-A No. 53-2408 and others.
And the silver halide emulsions described in JP-A Nos. 614 and 55-127549.

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 a cube, an octahedron, a tetrahedron composed of a mixture of (100) planes and (111) planes, a shape having (110) planes, a spherical shape,
It may be flat or the like. Average particle size is 0.05-3
Those having a size of μm can be preferably used. The particle size distribution is the particle size,
And a monodisperse emulsion having uniform 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 preferable.
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. What is good, preferably 70% or more,
More preferably, it is 80% or more. Where the average particle size rm
Is the product of the frequency n _i and r _i ^{3 of} particles having a particle size r _i n _i ×
It is defined as the particle size r _i when r _i ³ is maximum. (3 significant digits, rounding down to the least significant digit 4) The grain size referred to here is the diameter of spherical silver halide grains, or
In the case of particles having a shape other than spherical, it is the diameter when the projected image is converted into a circular image having the same area. The particle size can be obtained, for example, by magnifying the particles with an electron microscope at a magnification of 10,000 times 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 indiscriminate
Particularly preferable highly monodisperse emulsion having a grain size of 1000 or more is one having a distribution width defined by (grain size standard deviation / average grain size) x 100 = distribution breadth (%) of 20% or less. Is. Here, the average particle size and the particle size standard deviation are obtained from r _i defined above.

The monodisperse emulsion is prepared by adding a water-soluble silver salt solution and a water-soluble halide solution to pAg and pH in a gelatin solution containing seed grains.
Under the control of the double jet method. In determining the addition rate, reference can be made to JP-A-54-48521 and JP-A-58-49938. As a method for obtaining a more advanced monodisperse emulsion, JP-A-60-122935 is known.
The growth method in the presence of the tetrazaindene compound disclosed in US Pat.

The grain size of each emulsion layer of the silver halide photographic light-sensitive material according to the present invention is wide in consideration of various characteristics such as required performance, particularly sensitivity, sensitivity balance, sharpness of color separation, graininess and the like. You can decide from within the range.

In a preferred embodiment of the present invention, the grain size of silver halide is 0.1 μm to 0.6 μm for the red-sensitive layer emulsion.
μm, green-sensitive layer emulsion is 0.15 μm to 0.8 μm, and blue-sensitive emulsion is 0.1 μm.
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. The diameter is preferable. More preferably, the ratio is 0.7 to 2.0.

The yellow image forming layer, the magenta image forming layer and the cyan image forming layer of the present invention are laminated and coated on a support, but the order from the support may be any order. One preferred embodiment is, for example, a cyan image forming layer, a magenta image forming layer, and a yellow image forming layer from the side closer to the support. In addition to this, if necessary, an intermediate layer, a filter layer,
A protective layer or the like can be arranged.

The silver halide in the present invention can be optically sensitized with a commonly used sensitizing dye. It is also useful for the silver halide emulsion of the present invention to use a combination of sensitizing dyes used for supersensitization such as an internal latent image type silver halide emulsion and a negative type silver halide emulsion. Regarding the sensitizing dyes, Research Disclosure (hereinafter abbreviated as RD) Nos. 15162 and 17643 can be referred to.

In the silver halide photographic light-sensitive material of the present invention, a yellow image forming layer, a magenta image forming layer and a cyan image forming layer after the photographic processing having a color developing processing step is performed. The maximum density of the solid area (100% halftone dot area) is 1.50 to 1.90
And a silver halide color photographic light-sensitive material with a black color component density of 1.90 or higher corresponding to the solid image area of the black plate (halftone dot ratio of the black plate is 100%). preferable.

The fog treatment 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 fog 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 gives a certain range of exposure amount in combination with the photosensitive 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. 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 others). 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 and 1-formyl-2- [4- {3- (2-methoxyphenyl) ureido} phenyl] hydrazine.

The photographic light-sensitive material having a silver halide emulsion layer according to the present invention forms a positive image directly by subjecting it to imagewise exposure and then developing it in the presence of a fogging agent.

Examples of the developer that can be used in the developer used for developing the photographic light-sensitive material according to the present invention are:
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 the immersion in the high pH aqueous solution.

The developer used in the present invention may further contain a specific antifoggant and development inhibitor, or these developer additives may be optionally incorporated in the constituent layers of the photographic light-sensitive material. Is also possible.

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 contamination 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.

These dye-forming couplers preferably have a group called a ballast group having a carbon number of 8 or more, which makes the coupler non-diffusible, in the molecule. Also, these dye-forming couplers need only reduce 4 molecules of silver ion in order to form 1 molecule of dye, but they need only reduce 2 molecules of silver ion even if they are 4 equivalence. Either of two equivalence may be used. Releases a development inhibitor along with development, releases a development inhibitor at the same time as a DIR coupler that improves image sharpness and image graininess, and produces a colorless compound by coupling reaction with an oxidized product of a developing agent. DIR compounds may be used.

The DIR coupler and the DIR compound used have an inhibitor directly bound to the coupling position and an inhibitor bound to the coupling position via a divalent group, and are separated by the coupling reaction. Those which are bonded so as to release the inhibitor by intramolecular nucleophilic reaction, intramolecular electron transfer reaction and the like (referred to as timing DIR coupler and timing DIR compound) are included.

A colorless coupler (also referred to as a competing coupler) which undergoes a coupling reaction with an oxidized product of an aromatic primary amine developer but does not form a dye can be used in combination with the dye-forming coupler.

As the yellow dye-forming coupler, known acylacetanilide type couplers can be preferably used. Among these, benzoylacetanilide compounds and pivaloylacetanilide compounds are advantageous.

In the present invention, λL0.2 of the yellow image is
Is preferably 515 nm.

In the present invention, λL0.2 means 560 to 650 nm in the spectral absorbance A (λ) of the yellow image defined below.
Absorbance average value Am

[0070]

[Equation 1]

The maximum value of the above-mentioned spectral absorbance Am with reference to
Absorbance Amax at wavelength λmax corresponding to ax is larger than Am
In a yellow image having a high value of 1.0 ± 0.05, it means a wavelength on the long-wave side of λmax and corresponding to the absorbance A = 0.8 × Am + 0.2 × Amax. Further, λL0.8 means a wavelength showing A = 0.2 × Am + 0.8 × Amax in the above-mentioned spectral absorbance.

Amax is the absorbance at λmax of the yellow image, which is usually found at 400 nm or more, but 400 to 500 nm when the maximum value of the color image is not found due to the intervening factors such as UV absorbers. Absolute value of dA / dλ between dA / d
λ represents the absorbance at the smallest wavelength, that is, the absorbance at the shoulder.

The above-mentioned yellow image has the following conditions of resolution exposure:
It is formed by adjusting the exposure amount so that Amax-Am becomes 1.0 ± 0.05 and developing.

In the present invention, the spectral absorption of the yellow image is preferably λL0.8> 450 nm, and λL0.8>
More preferably> 455 nm. Further, λL0.2 is preferably 510 or less. Further, λmax is preferably 430 nm or more.

In the present invention, the spectrophotometer was measured by attaching an integrating sphere to a Hitachi 320 type spectrophotometer.

When the light-sensitive material of the present invention uses a coupler as a substance for forming a yellow image, any coupler can be used as long as it satisfies the above conditions, but preferred couplers are as follows. Examples thereof include couplers represented by the general formula [Y-I].

[0077]

[Chemical 1]

In the above formula, R ₁ represents an alkyl group or a cycloalkyl group, R ₂ represents an alkyl group, a cycloalkyl group, an acyl group or an aryl group, R ₃ represents a group capable of substituting on the benzene ring, n represents 0 or 1, Y represents a monovalent ballast group, and Z represents a hydrogen atom or a group capable of splitting off upon coupling.

Specific examples of the above-mentioned coupler include, for example, the compounds described on pages 5 to 9 of JP-A-3-241345, Y-I-
The compounds represented by 1 to Y-I-55 can be preferably used. Further, the compounds described on pages 11 to 14 of JP-A-3-209466 and the compounds represented by Y-1 to Y-30 can also be preferably used.

These yellow couplers are usually used in a silver halide emulsion layer in an amount of 1 × 10 ^-3 per mol of silver halide.
It can be used in an amount of 1 to 1 mol, preferably 1 × 10 ^-2 to 8 × 10 ^-1 mol.

The magenta image-forming layer according to the present invention preferably contains a compound represented by the following general formula (MI).

[0082]

[Chemical 2]

In the formula, Z represents a non-metal atom group necessary for forming a nitrogen-containing heterocycle, and the ring formed by Z may have a substituent.

X represents a hydrogen atom or a group capable of splitting off upon reaction with an oxidized product of a color developing agent. R represents a hydrogen atom or a substituent.

In the above general formula [MI], the substituent represented by R is not particularly limited, but is typically alkyl, aryl, anilino, acylamino, sulfonamide, alkylthio, arylthio, alkenyl, cycloalkyl. Other groups such as halogen atom and cycloalkenyl, alkynyl, heterocycle, sulfonyl, sulfinyl, phosphonyl, acyl, carbamoyl, sulfamoyl, cyano, alkoxy, aryloxy, heterocycleoxy, siloxy, acyloxy, and the like. Carbamoyloxy, amino, alkylamino, imide, ureido, sulfamoylamino, alkoxycarbonylamino, aryloxycarbonylamino, alkoxycarbonyl, aryloxycarbonyl, heterocyclic thio groups, and spiro. A compound residue, a bridged hydrocarbon compound residue, etc. are also mentioned.

The substituent represented by R, the group represented by X which can be removed by the reaction with the oxidation product of the color developing agent, the nitrogen-containing heterocycle formed by Z and the ring formed by Z may have. The preferred range and specific examples of the substituents and the preferred specific examples of the magenta coupler represented by the general formula [MI] are the same as those described in EP-A 0327272, page 5, line 23 to page 8, line 52. is there.

Typical examples of the magenta coupler represented by the general formula [MI] include M-1 to M-19 described in Japanese Patent Application No. 4-246870.

Still another specific example is European Published Patent 0273.
Compounds M-1 to M-61 described in No. 712, pages 6 to 21
And compounds 1 to 2 described in No. 0235913, pages 36 to 92
There are other than the representative examples described above in 23.

Further, the coupler is a Journal of the Chemical Society.
ciety), Perkin I (1977), 2047-2052, US Pat. No. 3,725,067, JP-A-59-99437, 58-42045.
No. 59, No. 162548, No. 59-171956, No. 60-33552, No. 60-33552
60-43659, 60-172982, 60-190779, 62-20945
It can be synthesized with reference to No. 7 and No. 63-307453.

[0090] aforementioned couplers can also be used with other types of magenta couplers, usually 1 mol of silver halide per 1 × 10 ^-3 mol to 1 mol, preferably 1 × 10 ^-2 mol to 8 × 10 ^- It can be used in the range of ¹ mol.

The color photographic light-sensitive material of the present invention preferably has a spectral absorption λL0.2 of a magenta image of 580 to 635 nm.

Further, the silver halide color photographic light-sensitive material having λL0.2 of 580 to 635 nm has a λ of spectral absorption of magenta image.
It is preferable that max is 530 to 560 nm.

Here, λL0.2 and λmax of the spectral absorption of the magenta image of the silver halide color photographic material of the present invention are measured by the following method.

(Method of measuring λL0.2 and λmax) In the case of the positive type, a silver halide color photographic light-sensitive material is uniformly exposed to a minimum amount of red light capable of obtaining the minimum density of a cyan image, and yellow. After uniformly exposing with the minimum amount of blue light that gives the lowest density of the image, applying white light through the ND filter and then developing, attach an integrating sphere to the spectrophotometer and use a standard white plate of magnesium oxide. A magenta image is prepared by adjusting the density of the ND filter so that the maximum absorbance is 1.0 when the spectral absorption at 500 to 700 nm is measured with zero correction.

In the case of the negative type, the density of the ND filter is adjusted so that the maximum absorbance similar to that of the above-mentioned positive is obtained when a magenta image is formed by developing by applying green light through the ND filter. λL0.2 means a wavelength longer than the wavelength at which the maximum absorbance is 1.0 on the spectral absorbance curve of this magenta image and at which the absorbance is 0.2.

As the cyan dye-forming coupler, known phenol-based, naphthol-based or imidazole-based couplers can be used. Typical examples include phenol-based couplers substituted with an alkyl group, an acylamino group, or a ureido group, naphthol-based couplers formed from a 5-aminonaphthol skeleton, and 2-equivalent naphthol-based couplers having an oxygen atom introduced as a leaving group. To be done.

Examples of the support that can be used in the light-sensitive material of the present invention include the above-mentioned RD17643, page 28 and RD18716.
Pp. 647 of the above. Suitable supports are polymer films, papers, etc., which may be treated for enhancing the adhesiveness, antistatic property and the like.

[0098]

EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited thereto.

Example 1 (Preparation of Emulsion EM-1) While controlling the aqueous solution containing ossein gelatin at 40 ° C., the aqueous solution containing ammonia and silver nitrate, potassium bromide and sodium chloride (KB in molar ratio).
An aqueous solution containing r: NaCl = 95: 5) was simultaneously added by the control double jet method to obtain a cubic silver chlorobromide core emulsion having a grain size of 0.30 μm. At that time, pH and pAg were controlled so as to obtain a cubic particle shape. The obtained core emulsion further contains an aqueous solution containing ammonia and silver nitrate, potassium bromide and sodium chloride (KBr: NaCl = 4 in molar ratio).
An aqueous solution containing 0:60) was simultaneously added by the control double jet method to form a shell until the average particle size became 0.42 μm. 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, 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
The shell was formed 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 the sensitizing dye D-1 to EM-1, 600 mg of T-1 was added per mol of silver to obtain a 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 D-2 was added to EM-1 for color sensitization.

(Preparation of red-sensitive emulsion EM-R) Red-sensitive emulsion EM-R was prepared in the same manner as blue-sensitive emulsion except that sensitizing dyes D-3 and D-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 D-1, D-2, D-3 and D-4 were added to EM-1 for color sensitization. Pan-sensitive emulsion EM-
P1, EM-P2 and EM-P3 were produced.

However, EM-P1 is an emulsion prepared so that the spectral sensitivity in the red light region is almost the same as that of the red-sensitive emulsion EM-R. Similarly, EM-P2 has a red spectral sensitivity in the red light region. EM-P3 is an emulsion prepared to have 1.5 times the sensitivity of EM-R. Similarly, EM-P3 is an emulsion prepared to have twice the spectral sensitivity in the red light region as red-sensitive emulsion EM-R. is there.

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

[0109]

[Chemical 3]

Emulsions prepared above EM-B, EM-G,
EM-R, EM-P, EM-P1, EM-P2 and EM
Using P-P3, a color photographic light-sensitive material having the following constitution was produced.

As the support, anatase titanium oxide was used.
0 μm RC paper was used. The first to tenth layers were applied, and the back surface was coated with the eleventh layer in the following constitution. SA-1 and SA-2 were used as coating aids, and H- was used as a hardener.
Samples were prepared using H-1 and H-2.

In the preparation of the coating solution, the pan-sensitive emulsion contained in the third, fifth and ninth layers was mixed with the coating solution prepared except for the pan-sensitive emulsion prepared separately. ,
Immediately thereafter, coating was performed. The gelatin used was a gelatin whose transmittance was improved by adding hydrogen peroxide solution in the latter stage of liming of ossein to reduce the coloring of ossein and then extracting.

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 1.43 (blue sensitive layer) Blue-sensitive emulsion EM-B (coated silver amount) 0.4 Pan-sensitive emulsion EM-P1 (coated silver amount) 0.1 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 0.54 (Intermediate layer) Anti-color mixing agent (AS-1, AS-3, AS-4) 0.055 Solvent (SO-2) 0.072 Anti-irradiation dye (AI-3) 0.03 7th layer Gelatin 0.42 (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 0.54 (Intermediate layer) Color mixture Inhibitor (AS-1, AS-3, AS-4 equivalent) 0.055 Solvent (SO-2) 0.072 Fifth layer Gelatin 1.43 (Green sensitive layer) Green sensitive emulsion EM-G (Coated silver amount) 0.40 General sensitive emulsion EM-P1 (Amount of coated silver) 0.10 Magenta coupler (MC-1) 0.25 Yellow coupler (YC-2) 0.06 Anti-stain agent (AS-2) 0.019 Solvent (SO-1) 0.31 Inhibitor (ST-1, ST- 2, T-1) 4th layer Gelatin 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 3rd layer Gelatin 1.38 (Red-sensitive layer) Red-sensitive emulsion EM-R (coated silver amount) 0.24 Pan-sensitive emulsion EM-P1 (coated silver amount) 0.06 Cyan coupler (CC-2) 0.44 Solvent (SO-1) 0.31 Anti-stain agent (AS-2) 0.015 Inhibitor (ST-1, ST-2, T-1) Second layer Gelatin 0.54 (Intermediate layer) Color mixture inhibitor (AS-1, AS-3, AS-4 equivalent) ) 0.055 Solvent (SO-2) 0.072 1st layer Gelatin 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 coated silver is calculated in terms of silver.

The above sample was designated as sample A. Similarly, a sample in which the pan-sensitive emulsion was changed from EM-P1 to EM-P2 was prepared and designated as sample B. Similarly, pan-sensitive emulsion EM-P
A sample in which the sample No. 1 was changed to EM-P3 was prepared as sample C. For comparison, samples were prepared by replacing the pan-sensitive emulsion EM-P1 in each layer with EM-B, EM-G, and EM-R, respectively.

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

[0116]

[Chemical 4]

[0117]

[Chemical 5]

[0118]

[Chemical 6]

[0119]

[Chemical 7]

For the sample A and the comparison obtained as described above, the black plate and the cyan plate of the original halftone dots were brought into close contact with each other and exposed under the exposure condition-1 shown below. Next, the black plate and the magenta plate were brought into close contact with the sample, and the exposure conditions shown below −
Exposed at 2. 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.

Next, similarly to the produced samples A to C, similarly, exposure conditions from 1 to 3 were sequentially exposed, and only the black plate of the original document was brought into close contact with it and exposed under the exposure condition-4 shown below.

Each of the light-sensitive materials thus exposed was processed by the development processing steps shown below to obtain a dye image consisting of halftone dots.

The results of the obtained concentration measurement are shown. The concentration was measured using PDA-65 manufactured by Konica.

(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.
With the minimum exposure amount that minimizes the red light density after development processing
Expose for 0.5 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 white light was exposed,
With the minimum exposure amount that minimizes the green light density after development processing
Expose for 0.5 seconds.

(Exposure condition-3) Each light-sensitive material is passed through a blue filter (Ratten No. 47B) and an ND filter to adjust the ND filter density when exposing white light so that the green light density after development is minimized. Exposure for 0.5 seconds with the minimum exposure amount.

(Exposure condition-4) Each of the light-sensitive materials was sequentially exposed under the above-mentioned exposure conditions-1 to 3 and then passed through an infrared filter (Ratten No. 26) and an ND filter,
Adjust the ND filter density when exposing white light,
Exposure is performed for 0.5 seconds with 30% light amount of exposure condition-1.

A daylight fluorescent lamp was used as a light source under exposure conditions-1 to 3.

Processing was carried out according to the following processing step-1 (new solution processing). However, the fog exposure was uniformly exposed on the entire surface of the light-sensitive material through the layer of the developing solution having a thickness of 3 mm while being immersed in the developing solution.

Processing Step-1 Temperature Time Immersion (Developer) 37 ° C 12 seconds Fog exposure-12 seconds (1 lux) Development 37 ° C 95 seconds Bleach-fixing 35 ° C 45 seconds Stabilization 25-30 ° C 90 seconds Dry 60- 85 ° C 40 seconds Processing solution composition (color developer) Benzyl alcohol 15.0ml Cerium sulfate 0.015g Ethylene glycol 8.0ml Potassium sulfite 2.5g Potassium bromide 0.6g Sodium chloride 0.2g Potassium carbonate 25.0g T-1 0.1g Hydroxylamine Sulfate 5.0 g Sodium diethylenetriaminepentaacetate 2.0 g 4-Amino-N-ethyl-N- (β-hydroxyethyl) 4.5 g Aniline sulfate Optical brightener (4,4'-diaminostilbenedisulfonic acid derivative) 1.0
g Potassium hydroxide 2.0 g Diethylene glycol 15.0 ml Water is added to bring the total volume to 1 liter, and the pH is adjusted to 10.15.

(Bleach-fixing solution) diethylenetriaminepentaacetic acid ferric ammonium 90.0 g diethylenetriaminepentaacetic 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 bring the total volume to 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 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.

The prescription of the replenisher for running is shown below.

(Color development replenisher) Benzyl alcohol 18.5 ml Cerium sulfate 0.015 g Ethylene glycol 10.0 ml Potassium sulfite 2.5 g Potassium bromide 0.3 g Sodium chloride 0.2 g Potassium carbonate 25.0 g T-1 0.1 g Hydroxylamine sulfate 5.0 g Sodium diethylenetriaminepentaacetate 2.0 g 4-Amino-N-ethyl-N- (β-hydroxyethyl) 5.4 g Aniline sulfate Optical brightener (4,4'-diaminostilbenedisulfonic acid derivative) 1.0 g Potassium hydroxide 2.0 g Diethylene glycol 18.0 ml Add water to make the total volume 1 liter and adjust to pH 10.35.

(Bleach-fixing solution replenishing solution) The same as the above-mentioned bleach-fixing solution.

(Stabilizer Replenisher) Same as the above stabilizer.

The replenishing amount of the developing solution replenishing solution, the bleach-fixing solution and the stabilizing solution was 320 ml per 1 square meter of the light-sensitive material.

The results of the dot gain measurement and evaluation are shown below.

<Measurement of Dot Gain> The dot gain (DG ₈₀ ) at 80% is the solid density (Dt) of the halftone dot image of 175 / inch, the 80% halftone dot (D ₈₀ ) and the white background (Db). X-
It was measured with a rite and calculated using the following Murray Davis method.

[0140]

[Equation 2]

<Evaluation Method> For each of the obtained gray dot gains (DG ₈₀ ), the dot gain of the proof print is set to 100.
Evaluated as.

[0142]

[Table 1]

As is clear from Table 1 above, Nos. 2, 3 and 4 of the present invention have low monochromatic density and are excellent in color reproduction.
The black background of black is also excellent, and especially the dot gain in the high-density portion is superior to that of the sample 1 exposed three times. This is an important property to see the shade and tone of hair. It is also possible to process with three exposures if performance is not a concern.

Example 2 Samples A, B and C prepared in Example 1 were exposed to light and developed as in Example 1 to obtain standard samples. Further, for each of the samples A, B, and C, the fourth exposure (exposure condition-
It was confirmed that the density variation of cyan single color when the light amount in 4) was changed by ± 15%.

[0145]

[Table 2]

As is clear from the results of Table 2, in order to stably obtain a monochromatic density and dot gain close to those of printed matter, the sensitivity of the pan-sensitive emulsion at an arbitrary wavelength (here, red light) corresponds to that of the image forming layer. (Here red sensitive layer) emulsion 1.
It is desirable to have a sensitivity of 5 times or more.

Also, with respect to the comparative light-sensitive material which did not use the black emulsion, the above-mentioned four times exposure was carried out and the density fluctuation of the single color due to the light quantity change was confirmed, but it was a bad value of 0.35.

Example 3 Using EM-B, EM-G, EM-R and EM-R3 prepared in Example 1, a silver halide color photographic light-sensitive material having the following constitution, Sample D was prepared.

Layer composition Coating amount (g / m ² ) 12th layer Gelatin 0.78 (UV absorbing layer) UV absorber (UV-1) 0.065 UV absorbing layer (UV-2) 0.195 Solvent (SO-2) 0.1 Colloidal Silica 0.03 11th layer Gelatin 1.05 (pan-sensitive layer) Pan-sensitive emulsion EM-P3 (coating silver amount) 0.30 Yellow coupler (YC-1) 0.21 Magenta coupler (MC-1) 0.063 Cyan coupler (CC-1) 0.110 Stain prevention Agent (AS-2) 0.019 Solvent (SO-1) 0.615 10th layer Gelatin 0.75 (Intermediate layer) Color mixture inhibitor (AS-1) 0.055 Solvent (SO-2) 0.072 9th layer Gelatin 1.14 (Blue sensitive layer) Blue Sensitive Emulsion EM-B (Amount of coated silver) 0.4 Yellow coupler (YC-1) 0.656 Anti-stain agent (AS-2) 0.02 Solvent (SO-1) 0.656 Inhibitor (ST-1, ST-2, T-1) Eighth layer Gelatin 0.54 (intermediate layer) Anti-color mixing agent (AS-1) 0.055 (SO-2) 0.072 7th layer gelatin 0.42 (Yellow yellow colloidal silver 0.1 colloidal silver layer) Anti-color mixing agent (AS-1) 0.04 Solvent (SO-2) 0.049 Polyvinylpyrrolidone (PVP) 0.047 6th layer gelatin 0.54 ( Intermediate layer) Anti-color mixing agent (AS-1) 0.055 Solvent (SO-2) 0.072 Fifth layer Gelatin 1.14 (Green-sensitive layer) Green-sensitive emulsion EM-G (Coating silver amount) 0.40 Magenta coupler (MC-1) 0.20 Stain Inhibitor (AS-2) 0.0152 Solvent (SO-1) 0.248 Inhibitor (ST-1, ST-2, T-1) 4th layer Gelatin 0.75 (Intermediate layer) Color mixture inhibitor (AS-1) 0.055 Solvent ( SO-2) 0.072 Third layer Gelatin 1.10 (Red-sensitive layer) Red-sensitive emulsion EM-R (Amount of coated silver) 0.24 Cyan coupler (CC-3) 0.352 Solvent (SO-1) 0.248 Anti-stain agent (AS-2) 0.012 Inhibitor (ST-1, ST-2, T-1) Second layer Gelatin 0.54 (Intermediate layer) Anti-color mixing agent (AS-1, AS-3, AS-4 equivalent) 0.055 Solvent (SO-2) 0.072 13th layer Gelatin 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 sample D obtained as described above was subjected to the exposure and development treatment applied to the sample C in Example 1. As a result of comparing the obtained performance with the evaluation of the sample C, similarly, the single color density is low and the color reproduction is excellent. It was also confirmed that the black background of the black ink and the dot gain in the high density area were close to those of the printed matter.

[0151]

According to the present invention, a color proof having a density close to that of a proof printed matter and having a good color tone can be obtained.
It can be obtained with a single exposure and has excellent gray dot gain.

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

Claims (3)

[Claims] 1. A support having at least one yellow image-forming silver halide emulsion layer, at least one magenta image-forming silver halide emulsion layer and at least one cyan image-forming silver halide emulsion. A silver halide color photographic light-sensitive material having a layer and containing an emulsion having sensitivity to all of red light, green light and blue light, a yellow plate halftone image film and a black plate halftone dot. Exposure through a first light through an image film, exposure through a second light through a magenta plate image film and black halftone dot image film, and third through a cyan plate halftone image film and black halftone dot image film After exposure by light (however, the first light, the second light, and the third light have different wavelength ranges from each other), and further exposure through the black halftone dot image film one or more times, A color image forming method characterized by forming a color image. 2. A silver halide color photographic light-sensitive material processed by the color image forming method, wherein the cyan image forming layer, the magenta image forming layer and the yellow image forming layer each contain an emulsion having different color sensitivity, and At least one of the image-forming layers contains an emulsion having sensitivity to all wavelengths of red light, green light and blue light having a sensitivity at any wavelength of 1.5 times or more that of the emulsion. Characteristic silver halide color photographic light-sensitive material. 3. A silver halide color photographic light-sensitive material processed by the color image forming method, wherein the cyan image forming layer, the magenta image forming layer and the yellow image forming layer each contain an emulsion having different color sensitivity, and are optional. Silver halide having at least one layer containing an emulsion having sensitivity to all light of red light, green light and blue light having a sensitivity of 1.5 times or more as high as that of the emulsion. Color photographic light-sensitive material.