JPH08286336A - Silver halide color photosensitive material for color proof manufacture and color proof manufacturing method - Google Patents

Abstract

PURPOSE: To provide a silver halide color photosensitive material for color proof manufacture capable of obtaining a stable image and provide a color proof manufacturing method. CONSTITUTION: In a silver halide color photosensitive material for color proof manufacture which conducts exposure based on dot image information comprising color separated yellow, magenta, cyan, and black image information, at least part of dot image information is converted so that when dot area ratio is 40%, the number of dots per in 1inch<2> is 200×10<3> or more, and the sensitive material contains each layer of a yellow image forming emulsion (called Y emulsion), a magenta image forming emulsion (called M emulsion), a cyan image forming emulsion (called C emulsion), and in addition contains a black image forming emulsion (called S emulsion), and even in the spectral sensitivity region of either emulsion of the Y emulsion, M emulsion, C emulsion, and S emulsion, each emulsion has the spectral sensitivity region at least 6 times higher than other 3 emulsions.

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 silver halide color photographic light-sensitive material for producing a color proof and a method for producing a color proof using the same.

[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 manufacturing method is Shokoku Sho 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 drawbacks that images must be superposed and transferred in the process of producing a color proof, which requires a long operation time and a high production 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.

In recent years, from the viewpoint of improving the image quality of printed matter, there has been a strong demand for practical application of high-definition plate making and printing. However, the conditions for reproducing fine dots are strict, and it is desired to improve their reproducibility. However, the reality is that it has not yet become popular. Furthermore, in terms of obtaining a color proof for high-definition printing as well, there is a point that improvements need to be made as in plate making and printing. In particular, in the color proof to which the silver salt photographic method is applied, even if the small dot reproducibility is good, when it is applied in high definition, unfavorable reproduction is caused from the viewpoint of dot reproducibility (dot gain), and improvement is desired. Further, there are problems of deterioration of reproducibility of gray neutrality, fluctuation of development processing conditions, and fluctuation of neutrality due to minute deviation of register marks.

The frequency modulation (FM) screen method has the same problem as high definition printing. For the FM screen method, for example, “Printing Magazine” 1994 (Vol.
7) As described in detail in 6, p49, etc., the frequency (F) is used to describe the nature of the wave, and the number of waves (frequency) is determined. The concept of amplitude (A) is used to describe the height of a wave. Applying the concept of frequency and the concept of amplitude to screening,
The screen frequency (F) can be understood as the number of halftone dots per cm, and at the same time the width of the halftone dot. On the other hand, the amplitude (A) describes how large a point is in terms of area. Conventional screening produces points of different size, as is well known, but they are all equidistant. This can be referred to as amplitude modulation (AM) screening. In frequency modulation (FM) screening, the spots are always the same size but at different distances.

JP-A 1-260629, JP-A 61-233732 and JP-A 4-1632 disclose YMs having different spectral sensitivities.
A silver halide color photographic light-sensitive material having four emulsion layers of C ink is described. However, the application to high-definition printing, which is a high-quality printing that can simply obtain an image similar to a printed matter, and the printing by FM screening, is not mentioned at all, and there is no description about the drawbacks due to the application to the high-quality printing. Absent.

[0014]

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. Halogenation for producing color proofs, which is produced so that the image quality such as halftone dot quality and image density is similar to that of printed matter, and stable images can be obtained even if processing conditions change or minute misregistration occurs. A silver color photographic light-sensitive material and a method for producing a color proof.

[0015]

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

1. A silver halide color photographic light-sensitive material for producing a color proof that exposes a silver halide color photographic light-sensitive material based on halftone dot image information consisting of color-separated yellow image information, magenta image information, cyan image information and black image information. In the material, at least a part of the halftone dot image information is 1 in when the halftone dot area ratio is 40%.
The halftone image is converted so that the number of halftone dots per ch ² is 200 × 10 ³ or more, and the silver halide color photographic light-sensitive material is provided on a support to form a yellow image forming silver halide. A layer containing an emulsion (referred to as Y emulsion), a layer containing a magenta image forming silver halide emulsion (referred to as M emulsion), a layer containing a cyan image forming silver halide emulsion (referred to as C emulsion) and a fourth Of the above-mentioned Y emulsion, M emulsion, C emulsion, and S emulsion, and at least 6 more than the other three emulsions. A silver halide color photographic light-sensitive material for producing a color proof, which has a spectral sensitivity region with high double sensitivity.

2. 1. A method for producing a color proof in which a silver halide color photographic light-sensitive material is exposed based on halftone dot image information consisting of color-separated yellow image information, magenta image information, cyan image information and black image information. A method for producing a color proof, which comprises using the silver halide color photographic light-sensitive material for producing a color proof of.

3. 2. The halftone dot image information is halftone dot image information produced by frequency modulation.
A method for producing the color proof described.

4. The halftone image in which the halftone dot image information is recorded on a film, wherein the exposure is performed by bringing the film into close contact with the silver halide color photographic light-sensitive material and scanning a light source. 3. The method for producing a color proof according to item 3.

5. 5. The method for producing a color proof according to 4, wherein the light from the light source is exposed through an optical means for improving parallelism.

The present invention will be described in more detail below.

The silver halide photographic light-sensitive material for producing a color proof of the present invention comprises a layer containing a yellow image forming silver halide emulsion (referred to as Y emulsion), a magenta image forming silver halide emulsion (referred to as M emulsion). A layer containing a cyan image forming silver halide emulsion (referred to as C emulsion), and a fourth black image forming silver halide emulsion (S
It is called an emulsion).

Here, the S emulsion for forming the fourth black image may be any emulsion capable of forming a black image by imagewise exposure and development. In a preferred example, the S emulsion can also be used in combination with a black image layer containing a black coupler. Also, in another preferred example, the S emulsion can be used in combination with a black image layer containing a yellow coupler, a magenta coupler and a cyan coupler. Further, the S emulsion contributes to the image formation of a plurality of layers,
It is also a preferable example to form a black image by combining a plurality of images resulting from the development of these S emulsions. As an example of forming a black image by combining a plurality of images, for example, a yellow image layer for forming a yellow image contains an S emulsion, and a blue image (for example, a magenta image and a cyan image) which is a complementary color of the yellow image is separately provided. (Which results in a blue image when formed simultaneously) is also contained in the forming layer, and a black image is formed by developing the S emulsion. Further, the S emulsion may be contained in the magenta image forming layer and its complementary color image forming layer, or the S emulsion may contain the cyan image forming layer in its complementary color image forming layer.

In another preferred example, the S emulsion is contained in any of the yellow image forming layer, the magenta image forming layer and the cyan image forming layer, and the S emulsion is developed to form a black image. . In that case, the yellow image forming layer, the magenta image forming layer and the cyan image forming layer may or may not contain the Y emulsion, M emulsion and C emulsion of the present invention. Good.

One of the most preferred embodiments of the present invention is
A yellow image-forming silver halide emulsion layer in the present invention,
Both the magenta image forming silver halide emulsion layer and the cyan image forming silver halide emulsion layer contain S emulsion.

Yet another most preferred embodiment of this invention is one in which the S emulsion is contained in a black imaging silver halide emulsion layer.

The yellow image forming silver halide emulsion layer, the magenta image forming silver halide emulsion layer and the cyan image forming silver halide emulsion layer of the present invention may be a single layer or may be composed of a plurality of layers. . The order of coating from the support can be selected arbitrarily.

The silver halide photographic light-sensitive material (hereinafter also simply referred to as light-sensitive material) for producing a color proof of the present invention is Y
The silver halide photographic light-sensitive material for making a color proof has a spectral sensitivity region which is at least 6 times higher than the other three emulsions in any of the emulsions of M emulsion, M emulsion, C emulsion and S emulsion. Is. That is, there exists a spectral sensitivity region in which the sensitivity of the Y emulsion is at least 6 times higher than the sensitivity of each of the other M, C, and S emulsions, and the other three M emulsions, the C emulsions, and the S emulsions have the same sensitivity. There is a spectral sensitivity region that is at least 6 times higher than the emulsion.

In any of the Y emulsion, the M emulsion, the C emulsion and the S emulsion, there is preferably a spectral sensitivity region in which the spectral sensitivity region is at least 8 times higher than the other three emulsions.

In one preferred embodiment, the Y emulsion, the M emulsion, the C emulsion and the S emulsion each have a spectral maximum in a wavelength region different from each other. Y emulsion, M emulsion, C
When exposed at a specific wavelength near the maximum value of the spectral sensitivity distribution of one of the emulsions and the S emulsion, the sensitivity of the emulsion has a wavelength region at least 6 times higher than the sensitivity of the other three emulsions. Such a wavelength region exists near the maximum value of the spectral sensitivity distribution of all of the Y emulsion, M emulsion, C emulsion and S emulsion.

In another preferred embodiment, one of the Y, M, C and S emulsions has a spectral sensitivity distribution in which the spectral sensitivity distribution is at least 6 times higher than that of the other three emulsions. In some cases, the spectral sensitivity of the emulsion is not near the maximum. Even in that case, if the sensitivity difference is 6 times, it can be used.

In a preferred embodiment, the Y emulsion, the M emulsion, the C emulsion and the S emulsion all have different spectral wavelength regions, and their maximum sensitizing wavelengths are different from each other. Preferably, the maximum sensitizing wavelengths are different from each other by 20 nm or more. More preferably, they differ by 30 nm or more.

The maximum sensitizing wavelength of the Y emulsion, M emulsion, C emulsion and S emulsion may be any wavelength as long as the above conditions are satisfied. The maximum photosensitive wavelength of each emulsion can be arbitrarily selected from 350 nm to 900 nm. In one preferred embodiment, the Y emulsion is in the blue region, the M emulsion is in the green region, the C emulsion is in the red region, and the S emulsion is in the infrared region. In another preferred embodiment, the Y emulsion is 400 ± 3
It is also preferable to set 0 nm, M emulsion is 460 ± 30 nm, C emulsion is 540 ± 30 nm, and S emulsion is 640 ± 30 nm so that the difference in maximum light-sensitive wavelength of each emulsion is 20 nm or more. In another preferred example, the M emulsion is 580 nm, the C emulsion is 660 nm, and the Y emulsion is 75 nm.
0nm, S emulsion can be set to 850nm. In yet another preferred example, the Y emulsion can be set to 540 nm, the M emulsion to 380 nm, the C emulsion to 460 nm, and the S emulsion to 630 nm. The examples given here are only examples, and the present invention is not limited thereto.

It is essential that any emulsion selected from the Y emulsion, the M emulsion, the C emulsion and the S emulsion is at least 6 times higher than the sensitivity at any wavelength other than the emulsion in any wavelength region. Here, the sensitivity is the sensitivity expressed by the reciprocal of the exposure amount required to bring the density of a certain image layer to the maximum density of -0.3. It is preferably 8 times.

The Y emulsion, M emulsion, C emulsion in the present invention,
The S emulsion can be realized by selecting from conventionally known spectral sensitizing dyes and sensitizing them.

The photosensitive material of the present invention is preferably a positive photosensitive material. The positive-working light-sensitive material of the present invention includes a light-sensitive material according to a direct positive system and a color reversal system, and a so-called positive image is formed by bleaching a dye at the same time when bleaching image-formed silver. The light-sensitive material using the silver dye bleaching method, the light-sensitive material using the color diffusion transfer method and the like are included in the light-sensitive material of the present invention.

In the present invention, the color proof is performed by exposing the silver halide color photographic light-sensitive material on the basis of halftone dot image information composed of color-separated yellow image information, magenta image information, cyan image information and black image information. In the process of producing the halftone dot image information, at least part of the halftone dot image information is converted so that the number of halftone dots per 1 inch ² is 200 × 10 ³ or more when the halftone dot area ratio is 40%. Use the one that has been used. Preferably 300
X10 ³ or more, 400 x 10 ³ or more, more preferably 400
× 10 ^{3 to} 2000 × 10 ³ .

In the present invention, the number of halftone dots can be measured by counting halftone dot images taken by an optical microscope or the like.

The halftone image used in the present invention is particularly effective when it is a halftone image for high-definition printing by the AM screening method which has been generally used conventionally. The present invention is most effective in the case of a halftone image formed by a frequency-modulated so-called FM screen method called a screening method. That is, when a color proof is created by a method other than the present invention from halftone dot image information created by frequency modulation, the average distance between halftone dots is kept at a certain distance or more when the halftone dot% of the original is small. In the frequency-modulated halftone dot, the average distance between the halftone dots becomes closer to each other more rapidly as compared with the AM modulation in accordance with the increase of the halftone dot%. This is because the fluctuation of the neutrality is more likely to occur due to the minute deviation of the register marks, whose halftone dot% is the reference for processing and alignment, and this is effectively improved by the present invention.

In the present invention, it is preferable that the halftone dot image information is a halftone dot image recorded on a film, and the light exposure is performed by bringing the film into close contact with the photosensitive material and scanning the light source. A vacuum adhesion method can be preferably used for adhesion.

In the present invention, it is preferable that the light from the light source is exposed through an optical means for improving the parallelism. Examples of means for improving the parallelism of the light emitted from the light source include optical lenses, reflecting mirrors, a honeycomb structure or the like that allows a wall surface to absorb components other than the parallel light by passing through a linear tubular optical path. To be Also, the parallelism can be improved by an aggregate of optical fibers.

It is also preferable to perform exposure by laser scanning based on the halftone image information.

The reflective support used in the present invention will be described.

The reflection support used in the present invention is preferably a base paper, which is laminated with a polyolefin resin on both sides thereof.

The base paper used in the present invention can be selected from the raw materials generally used for photographic printing paper. Examples thereof include natural pulp, synthetic pulp, a mixture of natural pulp and synthetic pulp, and various raw materials for paper making.
In general, natural pulp mainly composed of softwood pulp, hardwood pulp, mixed pulp of softwood pulp and hardwood pulp, etc. can be widely used.

Further, the support may contain additives such as a sizing agent, a fixing agent, a strength-enhancing agent, a filler, an antistatic agent and a dye, which are generally used in papermaking, and a surface size. An agent, a surface-strengthening agent, an antistatic agent, etc. may be appropriately applied to the surface.

The support preferably has a smooth surface and usually has a weight of 50 to 300 g / m ² .
The resin to be laminated on both sides is ethylene, polyethylene terephthalate, α-olefins such as homopolymers of polypropylene, at least two copolymers of the above olefins, or a mixture of at least two of these various polymers. You can choose from. Particularly preferred polyolefin resins are low density polyethylene, high density polyethylene or mixtures thereof.

The molecular weight of the polyolefin resin is not particularly limited, but is usually 20,000 to 200,
Those in the range of 000 are preferably used.

The polyolefin resin coating layer on the side on which the photographic emulsion of the reflective support used in the present invention is coated is preferably 5 to 50 μm, more preferably 7 to 35 μm.

The polyolefin used for laminating the back side of the support (the reflection side of the side on which the emulsion layer is provided) is usually a melt-laminated mixture of low density polyethylene and high density polyethylene. And this layer is often matted.

In the polyolefin resin used for laminating the surface of the support (the surface on which the emulsion layer is provided) used in the present invention, preferably 13 to 20% by weight, more preferably 15 to 20% by weight of a white pigment is dispersed and mixed. To be done.

As the white pigment, inorganic and / or organic white pigments can be used, preferably inorganic white pigments. Examples of such white pigments include alkaline earth metal sulfates such as barium sulfate and calcium carbonate. Examples thereof include carbonates of alkaline earth metals, finely divided silicic acid, silicas of synthetic silicates, calcium silicate, alumina, hydrated alumina, titanium oxide, zinc oxide, talc, clay and the like.

Of these, preferably barium sulfate,
Calcium carbonate and titanium oxide, more preferably barium sulfate and titanium oxide.

Titanium oxide may be of rutile type or anatase type, and those whose surface is coated with a metal oxide such as hydrous alumina oxide or hydrous ferrite are also used.

In addition, it is preferable to add an antioxidant, a colored pigment for improving whiteness, and a fluorescent whitening agent.

When forming a laminate on the front and back of the support,
Generally, in order to improve the flatness of the developed photographic paper in a normal environment, a means such as slightly increasing the density of the resin layer on the front side or increasing the laminating amount on the back side rather than the front side is used.

In general, the front and back surfaces of the support can be laminated by forming the polyolefin resin composition on the support by melt extrusion coating. In addition, it is preferable to perform corona discharge treatment, flame treatment, or the like on the surface of the support, or on both the front and back surfaces, if necessary. Further, it is preferable to provide a sub-coat layer for improving the adhesiveness with the photographic emulsion on the surface of the surface laminate layer, or a back-coat layer for improving the printability and antistatic property on the back laminate layer.

Further, by coating a hydrophilic colloid layer containing a white pigment on the support, the sharpness is improved, which is preferable. As the white pigment, the same white pigment as described above can be used, but titanium oxide is preferable. It is more preferable to add a hollow fine particle polymer or a high-boiling point organic solvent to the hydrophilic colloid layer containing a white pigment because the sharpness and / or curl resistance can be improved.

In a preferred embodiment of the present invention, it is preferable to form a protective layer on the outermost surface of the light-sensitive material and add fine particle powder to the protective layer. As a fine particle powder (matting agent) and a method of using the same, JP-A-6-9528 is used.
It is preferable to use the technique described in page 3, left column, line 42 to page 4, right column, line 33.

As the reflective support used in the present invention, a synthetic resin film support such as polypropylene whose surface is further coated with polyolefin can be used.

The thickness of the reflective support used in the present invention is not particularly limited, but a thickness of 80 to 160 μm is preferably used. Particularly, those having a thickness of 90 to 130 μm are more preferable.

The shape of the surface of the reflective support used in the present invention may be smooth or may have an appropriate surface roughness, but a reflective support having a gloss close to that of a printed matter is selected. Preferably. For example, JIS B
It is preferable to use a white support having an average surface roughness SRa defined in 0601-1976 of 0.30 to 3.0 μm.

In the present invention, the surface roughness of the image forming surface is preferably 0.30 to 3.0 μm,
Therefore, a matting agent can be contained in the constituent layer on the image forming surface side of the light-sensitive material. The layer to which the matting agent is added includes a silver halide emulsion layer, a protective film, an intermediate layer and an undercoat layer, which may be added to a plurality of layers, and is preferably the uppermost layer of the light-sensitive material.

The surface gloss of the light-sensitive material of the present invention on the image forming layer side preferably has a gloss close to that of a printed matter, and for example, it is measured by the method specified in JIS-Z8741 of the surface of the image forming layer after processing. Gloss GS (60 °) is 5
Those of 15 are preferred. More preferably, it is 5 to 20.

As the silver halide emulsion used in the present invention, a surface latent image type silver halide emulsion forming a latent image on the surface by imagewise exposure is used, and silver halide forming a negative image by development. An emulsion may be used. or,
Using an internal latent image type silver halide emulsion whose surface is not fogged in advance, fog treatment (nucleation treatment) is performed after image exposure, and then surface development is performed, or the surface is subjected to fog treatment after image exposure while the surface is being fogged. The thing which can obtain a positive image directly by developing can also be used preferably.

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.

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.
A portion of the sample coated on the transparent support so as to be in the range of g / m ² was exposed to the light intensity scale for a certain period of time from about 0.1 second to about 1 second, In the case of developing for 4 minutes at 20 ° C. using the following surface developer A which develops only the surface image of the grains not containing the silver halide solvent,
Another part of the same emulsion sample is similarly exposed, and the image inside the grain is developed. The 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 It is preferably an emulsion showing a density. 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 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 3,367,778, and silver halide emulsions having internally chemically sensitized silver halide grains, or U.S. Pat.Nos. 3,271,157, 3,447,927 and * (patent search required) No. 3 No. 5,53,291, an emulsion having silver halide grains containing a polyvalent metal ion described therein, or a silver halide grain containing a doping agent described in U.S. Pat. Sensitized silver halide emulsion, or JP-A-50-8524, 5
No. 0-38525 and No. 53-2408, and silver halide emulsions composed of grains having a laminated structure, and other silver halides described in JP-A Nos. 52-156614 and 55-127549. For example, an emulsion.

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 silver halide grains used in the present invention have a cubic shape, an octahedron shape, a tetrahedral shape composed of a mixture of (100) planes and (111) planes, a shape having a (110) plane, a spherical shape, a tabular shape or the like. Either may be used. The average particle size is 0.
Those having a thickness of 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 6% of the total weight of silver halide grains.
It is preferably 0% or more, more preferably 70%
The above is mentioned, and particularly preferably 80% or more. Here, the average particle size rm is the product ni × ri ³ of the frequency ni and ri ³ particles having a particle size ri is defined as the particle size ri when the maximum. (3 significant digits, minimum digit is 4
In the case of spherical silver halide grains, the diameter is used, and in the case of grains having a shape other than spherical, the projected image is converted into a circular image of the same area. Is the diameter of time. The particle size is, for example, 10,000 times to 5 times with an electron microscope.
It can be obtained by enlarging the image by a factor of ten thousand and photographing it, and measuring the particle diameter on the print or the area at the time of projection. (It is assumed that the number of measured grains is 1000 or more indiscriminately.) A particularly preferred highly monodisperse emulsion is (grain size standard deviation / average grain size) × 100 = distribution defined by the distribution width (%). The area is 20% or less.
Here, the average particle size and the particle size standard deviation are obtained from ri defined above.

The monodisperse emulsion can be obtained by adding a water-soluble silver salt solution and a water-soluble halide solution to a gelatin solution containing seed grains by the double jet method under the control of pAg and pH. 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-60-122 is known.
The growth method in the presence of the tetrazaindene compound disclosed in No. 935 can be applied.

It is also preferable to add two or more monodisperse emulsions to the same color-sensitive layer.

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

The light-sensitive material according to the present invention preferably contains a nitrogen-containing heterocyclic compound having a mercapto group.
Preferred compounds include the general formula [XI] described in JP-A-6-95283, page 19, right column, lines 20 to 49, particularly preferably the general formula described in page 20, left column, line 5 to page 20, right column, line 2 Formula [XII], general formula [XIII], general formula [XIV]
Is. Specific examples of the compound include, for example, JP-A 64-733.
Compounds (1) to (39) described in No. 38, pages 11 to 15 can be mentioned.

The above mercapto compound may be added in an appropriate amount depending on the type of compound used and the layer to be added. When it is added to the silver halide emulsion layer, it is generally 10 ^-8 per mol of silver halide. The range is preferably -10 ^-2 mol, more preferably 10 ^-6 to 10 ^-3 mol.

In one preferred embodiment of the present invention, the grain size of silver halide is 0.1 μm or less for the red-sensitive layer emulsion.
0.6 .mu.m, the green-sensitive layer emulsion was OD. 15 μm to 0.8 μ
m and blue-sensitive emulsions can be preferably used in the range of 0.3 to 1.2 μm.

The magenta coupler used in the present invention is represented by the general formula [M
The compound represented by the formula (1) is preferable since the color-developing dye has good spectral absorption characteristics. Specific examples of preferable compounds include compounds M-1 to M-1 described on pages 8 to 11 of the same publication.
There are nine. Still other specific examples include the compounds M-1 to M-61 described in European Patent Publication No. 0,273,712, pages 6 to 21 and the compounds 1 to 223 described in No. 0,235,913, pages 36 to 92. There are other than the typical examples.

The above-mentioned couplers may be used in combination with other types of magenta couplers, and usually 1 × 10 ^-3 mol to 1 mol is preferable, and 1 × 10 ^-2 mol to 8 is more preferable, per 1 mol of silver halide. It can be used in the range of × 10 ^-1 mol.

The light-sensitive material of the present invention preferably has a spectral absorption λ _L0.2 of a magenta image of ₅₈₀ to 635 nm.

Further, the light-sensitive material having λ _{L0.2 of 580} to 635 _nm has a λ max of spectral absorption of a magenta image of 530.
It is preferably ˜560 nm.

Here, λ _L0.2 and λ max of the spectral absorption of the magenta image of the light-sensitive material of the present invention are quantities measured by the following method.

(Measurement method of λ _L0.2 and λ max) In the case of positive type, the light-sensitive material of the present invention is uniformly exposed to a minimum amount of red light capable of obtaining the minimum density of a cyan image, and a yellow image is obtained. After uniformly exposing with the minimum amount of blue light that gives the lowest density of, after applying white light through the ND filter and developing processing, attach an integrating sphere to the spectrophotometer, and use a standard white plate of magnesium oxide to achieve zero. Corrected 500
A magenta image is produced by adjusting the density of the ND filter so that the maximum value of the absorbance when measuring the spectral absorption at ˜700 nm is 1.0.

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. λ _L0.2 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.

In order to adjust the spectral absorption characteristics of the magenta dye image (or cyan or yellow image) as described above, it is preferable to add a compound having a color tone adjusting action. Examples of the compound for this purpose include general formulas [HBS-I] and [HBS-I] described in JP-A-6-95283, page 22.
-II] is preferable, and a compound represented by the general formula [HBS-II] described on page 22 of the same publication is more preferable.

The magenta image forming layer of the light-sensitive material of the present invention preferably contains a yellow coupler in addition to the magenta coupler. The difference in pKa between these couplers is preferably within 2, and more preferably within 1.5. A preferable yellow coupler to be contained in the magenta image forming layer of the present invention is a coupler represented by the general formula [Y-Ia] described in JP-A-6-95283, page 12, right column. Among the couplers represented by the general formula [Y-1] of the publication, particularly preferred ones are those represented by the general formula [M-
When combined with the magenta coupler represented by 1],
A coupler having a pKa value not lower than 3 by 3 or more than the pKa value of the coupler represented by [M-1].

Specific examples of the compounds include compounds Y-1 and Y-2 described in JP-A-6-95283, pages 12 to 13, as well as the compounds described in pages 13 to 17 of JP-A-2-139542 ( Y-1) to (Y-58) can be preferably used, but the present invention is not limited thereto.

In the present invention, the cyan coupler contained in the cyan image forming layer is a known phenol type,
Naphthol-based or imidazole-based couplers can be used. For example, a phenol-based coupler substituted with an alkyl group, an acylamino group, or a ureido group, 5
A typical example is a naphthol-based coupler formed from an aminonaphthol skeleton, and a 2-equivalent naphthol-based coupler having an oxygen atom introduced as a leaving group. Among them, preferred compounds include general formulas [CI] [C-II] described on page 13 of JP-A-6-95283.

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, λ _{L0.2 of} the yellow image is
Is preferably 515 nm or less.

In the present invention, λ _L0.2 refers to JP-A-6-9528.
It is a value defined by the contents described in the right column, lines 1 to 24 on page 21, of the gazette No. 3, and represents the magnitude of unnecessary absorption on the long wave side in the spectral absorption characteristic of the yellow dye image.

In the present invention, the spectral absorption of the yellow image is preferably λ _L0.8 > 450 nm,
More preferably, _L0.8 > 455 nm. Also, λ
_L0.2 is preferably 510 or less. Further, λmax is preferably 430 nm or more.

In the present invention, a Hitachi 320 type spectrophotometer was equipped with an integrating sphere to measure the spectral absorbance.

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 a preferable coupler is preferable. Kohei
Examples thereof include couplers represented by the general formula [YI] described on page 21 of JP-A 6-95283.

Specific examples of the above couplers include compounds described in JP-A-3-241345, pages 5 to 9, 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 1 per mol of silver halide.
^-3 to 1 mol is preferable, and 1 x 10 ^-2 to 8 is more preferable.
It can be used in the range of × 10 ^-1 mol.

The couplers used in the present invention are usually 1 × per mol of silver halide in each silver halide emulsion layer.
10 ⁻³ mol to 1 mol is preferable, and 1 × 1 is more preferable.
It can be used in the range of 0 ^-2 mol to 8 x 10 ^-1 mol.

When the oil-in-water type emulsion dispersion method is used to add the coupler or other organic compound used in the light-sensitive material of the present invention, it is usually used in a water-insoluble high-boiling point organic solvent having a boiling point of 150 ° C. or higher. If necessary, a low boiling point and / or a water-soluble organic solvent is also used in combination to dissolve, and a surfactant is emulsified and dispersed in a hydrophilic binder such as an aqueous gelatin solution. As a dispersing means, a stirrer, a homogenizer, a colloid mill, a flow jet mixer, an ultrasonic disperser or the like can be used.

After the dispersion or at the same time as the dispersion, a step of removing the low boiling point organic solvent may be added. As the high-boiling-point organic solvent that can be used to dissolve and disperse the coupler and the like, dioctyl phthalate, diisodecyl phthalate, phthalic acid esters such as dibutyl phthalate, tricresyl phosphate, phosphoric acid esters such as trioctyl phosphate, Phosphine oxides such as trioctylphosphine oxide are preferably used. The high-boiling organic solvent preferably has a dielectric constant of 3.5 to 7.0. It is also possible to use two or more high boiling point organic solvents in combination.

A particularly preferable compound as the high boiling point organic solvent is the compound represented by the general formula [HB] described on page 22 of JP-A-6-95283.
S-I] and [HBS-II], and particularly preferably [HBS-II]. Specific compounds include, for example, JP-A-2-124568, 5
Compounds I-1 to II-95 described on pages 3 to 68 can be mentioned.

Preferred compounds as the surfactant used for dispersing the photographic additives and adjusting the surface tension during coating are a hydrophobic group having 8 to 30 carbon atoms and a sulfonic acid group or a salt thereof in one molecule. The thing contained is mentioned. Specific examples thereof include A-1 to A-11 described in JP-A-64-26854. A surfactant having a fluorine atom substituted in the alkyl group is also preferably used. These dispersions are usually added to a coating solution containing a silver halide emulsion, but it is preferable that the time from dispersion to addition to the coating solution and the time from addition to the coating solution and coating are short and 10 hours each. It is preferably within 3 hours, more preferably within 3 hours and within 20 minutes.

An anti-fading agent can be used in combination with each of the above-mentioned couplers in order to prevent fading of the formed dye image due to light, heat, humidity and the like. Preferred compounds include phenyl ether compounds represented by the general formulas I and II described in JP-A-2-66541, page 3, and phenolic compounds represented by the general formula IIIB described in JP-A-3-174150. -90445, the amine compounds represented by the general formula A, the general formulas XII and XI described in JP-A-62-182741.
The metal complexes represented by II, XIV and XV are particularly preferable for the magenta dye. Further, the compound represented by the general formula I ′ described in JP-A 1-196049 and the compound represented by the general formula II described in JP-A-5-11417 are particularly preferable for yellow and cyan dyes.

In the light-sensitive material of the present invention, a compound which reacts with an oxidized product of a developing agent is added to a layer between the light-sensitive layers to prevent color turbidity, or is added to a silver halide emulsion layer to fog. It is preferable to improve the above. The compound for this purpose is preferably a hydroquinone derivative, more preferably a dialkylhydroquinone such as 2,5-di-t-octylhydroquinone. A particularly preferable compound is the compound represented by the general formula II described in JP-A No. 4-133056, and the compound II-1 described in pages 13 to 14 of the same publication.
-II-14 and the compound 1 of the page 17 description are mentioned.

It is preferable to add an ultraviolet absorber to the light-sensitive material of the present invention to prevent static fog and improve the light resistance of dye images. Benzotriazoles are mentioned as preferable ultraviolet absorbers, and particularly preferable compounds are those represented by the general formula III-3 described in JP-A-1-250944.
A compound represented by the general formula described in JP-A-64-66646
Compound III, U described in JP-A-63-187240
V-1L to UV-27L, compounds represented by the general formula I described in JP-A-4-1633, and compounds represented by the general formulas (I) and (II) described in JP-A-5-165144. .

The light-sensitive material of the present invention preferably contains an oil-soluble dye or pigment because the whiteness is improved. Typical specific examples of oil-soluble dyes are described in JP-A-2-842, page (8).
Compounds 1-27 described on page (9) can be mentioned.

Gelatin is preferably used as a binder in the light-sensitive material of the present invention. Especially, in order to remove the coloring components of gelatin, the gelatin extract is treated with hydrogen peroxide, or the raw material ossein is extracted with hydrogen peroxide treated, or ossein produced from uncolored raw bone. The gelatin whose transmittance is improved by using is preferably used.

The gelatin used in the present invention may be any of alkali-treated ossein gelatin, acid-treated gelatin, gelatin derivative and modified gelatin, but alkali-treated ossein gelatin is particularly preferable.

A gelatin solution used in the light-sensitive material of the present invention had a transmittance of 10%, and a solution of 420n was prepared with a spectrophotometer.
When the transmittance is measured with m, it is preferably 70% or more.

The jelly strength of the gelatin used in the present invention (by the Paggy method) is preferably 250 or more,
Particularly preferably, it is 270 g or more.

The total amount of gelatin contained on the image forming surface side of the light-sensitive material of the present invention is preferably less than 11 g / m ² . Although the lower limit is not particularly limited, it is generally preferably 3.0 g / m ² or more in view of physical properties or photographic performance. The amount of gelatin is determined by converting it to the weight of gelatin containing 11.0% of water by the water content measuring method described in the Paggy method.

As the hardener for these binders, it is preferable to use a vinyl sulfone type hardener or a chlorotriazine type hardener alone or in combination. JP 61-249054
It is preferable to use the compounds described in JP-A No. 61-245153. Further, it is preferable to add an antiseptic agent and an antifungal agent as described in JP-A-3-157646 to the colloid layer in order to prevent the growth of molds and bacteria which adversely affect the photographic performance and image storability.

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 these, a black image forming layer, an intermediate layer, a filter layer, a protective layer and the like can be arranged as required.

In the light-sensitive material of the present invention, the reflection density of the raw sample at the maximum wavelength of the spectral sensitivity of the cyan image forming silver halide emulsion layer is preferably 0.7 or more.

The light-sensitive material of the present invention can be obtained by incorporating a coloring material such as a dye having absorption at the above wavelength or black colloidal silver into any of the photographic constituent layers of the present invention. The light-sensitive material of the present invention may contain a water-soluble dye in any silver halide emulsion layer and / or other hydrophilic colloid photographic constituent layers.
In the light-sensitive material of the present invention, a dye having at least one of a carboxyl group, a sulfonamide group and a sulfamoyl group is contained in any silver halide emulsion layer and / or other hydrophilic colloid photographic constituent layers. It can be contained as a solid dispersion.

As the dye having at least one of a carboxyl group, a sulfamoyl group and a sulfonamide group,
The compounds represented by the general formulas [I] to [IX] described on pages 14 to 16 of JP-A-6-95283 can be mentioned.

Specific examples of the dyes represented by the above general formulas [I] to [VIII] include, for example, JP-A No. 4-18545, 13 to 3.
Examples thereof include, but are not limited to, I-1 to VIII to 7 described on page 5.

The layer containing the dye or colloidal silver is not particularly limited, but is preferably contained in the non-photosensitive hydrophilic colloid layer between the support and the emulsion layer closest to the support.

The silver halide in the present invention can be optically sensitized with a sensitizing dye which is usually used. 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) 15162 and 17643 can be referred to.

It is preferable to add a compound for adjusting the gradation of the foot to the light-sensitive material of the present invention. As a preferable compound, a compound represented by the general formula [A
O-II] is preferable. Preferred examples of compounds include compounds II-1 to 1 described on page 18 of the same publication.
II-8 can be mentioned.

The addition amount of the compound [AO-II] is
Preferably 0.001~0.50g / m ^2, more preferably from 0.005~0.20g / m ^2. The compounds may be used alone or in combination of two or more kinds. Further, a quinone derivative having 5 or more carbon atoms may be added to the compound [AO-II] for use. However, in any of these cases, the amount used is 0.001-0.5 as a whole.
It is preferably in the range of 0 g / m ² .

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 entire 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.

[0124] Next, as a technique of the fogging agent that can be used in the present invention, JP-A-6-95283, page 18, right column 3
It is preferable to use the technique described in the left column, line 41, lines 9 to 19.

In order to improve whiteness, it is preferable to add a fluorescent whitening agent to the light-sensitive material of the present invention and / or the processing solution for processing the light-sensitive material of the present invention.

The developing solution, the bleach-fixing solution and the stabilizing solution for processing the light-sensitive material of the present invention are replenishing developing solution, replenishing bleaching solution, replenishing fixing solution, replenishing bleach-fixing solution and replenishing stabilizing solution. Can be continuously developed while replenishing.
In the present invention, the replenishment amount of the developer is preferably 700 cc or less per 1 m ^{2 of} the light-sensitive material, and the effect of the present invention can be more effectively exhibited. More preferably, the effect of the present invention can be more effectively exhibited when it is 500 cc or less. Other processing solutions are similar to the developing solution, and the replenishment rate is 1 m
Per ² is preferably 700 cc or less, and more preferably 500 cc or less, the effect of the present invention can be more effectively exhibited.

As the developer that can be used in the developer used for developing the light-sensitive material of the present invention, a conventional silver halide developer, for example, polyhydroxybenzenes such as hydroquinone, aminophenols and 3-pyrazolidones are used. , Ascorbic acid and its derivatives, reductones, phenylenediamines, etc., or a mixture thereof.

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.

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.

Known photographic additives can be used in the light-sensitive material of the present invention.

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 to 27 XI 650 Right Plasticizer 27 XII 650 Right Sliding agent 〃 〃 Static inhibitor 〃 〃 Matting agent 28 XVI 650 Right binder 29 IX 651 Right As the support that can be used in the photosensitive material of the present invention, Examples thereof include those described on page 28 of RD17643 and page 647 of RD18716. Suitable supports are polymer films, papers, etc., which may be treated for enhancing the adhesiveness, antistatic property and the like.

To form an image using the light-sensitive material of the present invention, it is preferable to use an automatic developing machine of the light source section scanning exposure system. Examples of particularly preferable image forming devices and systems include Konsensus L and Kons manufactured by Konica Corporation.
Ensus570 and Konsensus II can be mentioned.

The present invention is preferably applied to a light-sensitive material in which a developing agent is not incorporated in the light-sensitive material, and particularly preferably to a light-sensitive material having a reflective support for forming an image for direct viewing. For example, a color proof light-sensitive material can be mentioned.

[0136]

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

Example 1-Preparation of Emulsion EM-P1-While controlling the aqueous solution containing ossein gelatin at 40 ° C., an aqueous solution containing ammonia and silver nitrate, potassium bromide and sodium chloride (KBr: NaCl in a molar ratio). = 95: 5)
Was simultaneously added by a 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 that a cube was obtained as a 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. The shell was formed until the average particle size became 0.42 μm. that time,
PH and pAg so that a cube is obtained as the particle shape.
Controlled.

After washing with water to remove the water-soluble salt, gelatin was added to obtain an emulsion EM-P1. The breadth of distribution of this emulsion EM-P1 was 8%.

—Preparation of Emulsion EM-P2— While controlling the aqueous solution containing ossein gelatin at 40 ° C., an aqueous solution containing ammonia and silver nitrate, potassium bromide and sodium chloride (molar ratio KBr: NaCl = 95: 5). )
Was simultaneously added by a control double jet method to obtain a cubic silver chlorobromide core emulsion having a grain size of 0.18 μm. At that time, pH and pAg were controlled so that a cube was obtained as a 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. The shell was formed until the average particle size became 0.25 μm. that time,
PH and pAg so that a cube is obtained as the particle shape.
Controlled.

After washing with water to remove the water-soluble salt, gelatin was added to obtain an emulsion EM-P2. The breadth of distribution of this emulsion EM-P2 was 8%.

Preparation of Blue-Sensitive Silver Halide Emulsion-Emulsion EM-P1 was added with sensitizing dye BS-1 for optimum color sensitization, and then T-1 was added at 600 mg per mol of silver to obtain a blue-sensitive emulsion. Em-B1 was produced.

Preparation of Green-Sensitive Silver Halide Emulsion-Green-sensitive emulsion Em- was prepared in the same manner as blue-sensitive emulsion Em-B1 except that sensitizing dye GS-1 was added to emulsion EM-P2 for optimum color sensitization. G1 was produced.

-Preparation of Red-Sensitive Silver Halide Emulsion-Red was prepared in the same manner as Blue-sensitive emulsion Em-B1 except that sensitizing dyes RS-1 and RS-2 were added to Emulsion EM-P2 for optimum color sensitization. A sensitive emulsion Em-R1 was prepared.

-Preparation of Infrared Sensitive Silver Halide Emulsion-Infrared sensitization was carried out in the same manner as in the blue-sensitive emulsion Em-B1 except that the sensitizing dye IRS-1 was added to the emulsion EM-P1 for optimum color sensitization. Sex emulsion Em-IR was prepared.

T-1: 4-hydroxy-6-methyl-
1,3,3a, 7-Tetrazaindene High-density polyethylene on one side and anatase-type titanium oxide on the other side
The above-mentioned Em-B1, Em-G1, Em-R1, Em- was formed on a paper-pulp reflective support having a thickness of 110 μm, which was laminated with molten polyethylene dispersed in a content of 15% by weight.
Using each emulsion of IR, each layer having the following constitution was coated on the side of the polyethylene layer containing titanium oxide, and on the back side gelatin 6.00 g / m ² , silica matting agent 0.
A multilayer silver halide color photographic light-sensitive material sample 1-1 coated with 65 g / m ² was prepared. As a hardening agent, H-
1, H-2 was added. Surfactants SU-1, SU-2, and SU-3 were added and prepared as coating aids and dispersing aids.

SU-1: sulfosuccinic acid di (2-ethylhexyl) ester / sodium SU-2: sulfosuccinic acid di (2,2,3,3,4,4,5,5-octafluoropentyl) ester sodium salt SU-3: sodium i-propylnaphthalenesulfonate H-1: 2,4-dichloro-6-hydroxy-S-triazine sodium H-2: tetrakis (vinylsulfonylmethyl) methane layer composition coating amount (g / m ² ) 9th layer gelatin 1.60 (UV absorption UV absorber (UV-1) 0.070 absorption layer) UV absorption agent (UV-2) 0.025 UV absorption agent (UV-3) 0.120 Silica matting agent 0.01 8th layer gelatin 1.10 (Blue-sensitive layer) Blue-sensitive emulsion (Em-B1) 0.36 Yellow coupler (Y-1) 0.19 Yellow coupler (Y-2) 0.19 Inhibitor (T-1, T-2, T-3) (molar ratio 1: 1: 1) 0.004 Anti-stain (HQ-1) 0.004 High boiling organic solvent (SO-1) 0.30 7th layer Gelatin 0.94 (Intermediate layer) Anti-stain (HQ-2, HQ-3 etc.) Amount) 0.02 High boiling organic solvent (SO-2) 0.05 Anti-irradiation dye (AI-3) 0.03 6th layer Gelatin 0.45 (Yellow yellow colloidal silver 0.11 colloid layer) Stain inhibitor (HQ-1) 0.03 High boiling organic solvent (SO-2) 0.008 Polyvinylpyrrolidone 0.04 Fifth layer gelatin 0.45 (Intermediate layer) Stain inhibitor (HQ-2) 0.014 Stain inhibitor (HQ-3) 0.014 High boiling organic solvent (SO-2) 0.006 Fourth layer gelatin 1.25 (Green-sensitive layer) Green-sensitive silver chlorobromide emulsion (Em-G1) 0.32 Magenta coupler (M-1) 0.25 Yellow coupler (Y-3) 0.06 Anti-staining agent (HQ-1) 0.035 Inhibitor (T-1) , T-2, T-3) (molar ratio 1: 1: 1) 0.0036 High boiling point organic solvent (SO-1) 0.38 3rd layer gelatin 0.80 (intermediate layer) Stain inhibitor (HQ-2) 0.03 Stain inhibitor (HQ-3) 0.01 Anti-irradiation dye (AI-1) 0.04 High boiling point organic solvent (SO-2) 0.10 Second layer gelatin 0.90 (Red sensitive layer) Red Type silver chlorobromide emulsion (Em-R1) 0.27 Cyan coupler (C-1) 0.35 Anti-staining agent (HQ-1) 0.02 Inhibitor (T-1, T-2, T-3) (molar ratio 1: 1 : 1) 0.002 High boiling organic solvent (SO-1) 0.18 1st layer Gelatin 1.20 (white pigment, liquid paraffin 0.55 containing layer) Anti-irradiation dye (AI-2) 0.055 Titanium oxide 0.50 Support polyethylene laminated paper Agent-containing) * Addition amount of silver halide emulsion is shown in terms of silver.

[0149]

Embedded image

[0150]

Embedded image

[0151]

Embedded image

SO-1: tri (n-octyl) phosphine oxide S0-2: di (i-decyl) phthalate HQ-1: 2,5-di (t-butyl) hydroquinone HQ-2: 2,5- Di [(1,1-dimethyl-4-hexyloxycarbonyl) butyl] hydroquinone HQ-3: 2,5-di-sec-dodecylhydroquinone and 2,5-di-se
c-Tetradecylhydroquinone and 2-sec-dodecyl-5-sec
-A mixture of tetradecylhydroquinone in a weight ratio of 1: 1: 2 T-2: 1- (3-acetamidophenyl) -5-mercaptotetrazole T-3: N-benzyladenine Then, a sample was prepared in the same manner as in sample 1-1. 1-2 was produced.

In Sample 1-2, the 10th layer and the 11th layer having the following constitutions were applied between the first layer and the second layer of Sample 1-1 from the side closer to the support.

Coating amount (g / m ² ) 11th layer Gelatin 0.80 (intermediate layer) Anti-staining agent (HQ-2) 0.03 Anti-staining agent (HQ-3) 0.01 High boiling point solvent (SO-2) 0.01 10th layer Gelatin 1.25 (Infrared photosensitive layer) Infrared photosensitive silver chlorobromide emulsion (EM-IR) 1.00 Yellow coupler (Y-2) 0.50 Magenta coupler (M-1) 0.20 Cyan coupler (C-1) 0.35 Stain prevention Agent (HQ-1) 0.04 High boiling point solvent (SO-1) 2.00 Inhibitor (T-1, T-2, T-3) (molar ratio 1: 1: 1) 0.005 Sample 1-2 is blue. The sensitivity difference was measured at the wavelength showing the maximum spectral sensitivity of the sensitive emulsion, the green sensitive emulsion, the red sensitive emulsion, and the infrared sensitive emulsion, and the difference in sensitivity was found to be the blue sensitive emulsion, the green sensitive emulsion, the red sensitive emulsion, and the infrared sensitive emulsion. In all cases, the difference in sensitivity from the other three emulsions was more than 6 times.

The sample 1-1 obtained as described above was exposed under the exposure condition -1 shown below by bringing a black plate and a cyan plate among halftone originals into close contact with the sample. Next, the black plate and the magenta plate were brought into close contact with the sample and exposed under the exposure condition-2 shown below. Next, the black plate and the yellow plate were brought into close contact with the sample and exposed under the exposure condition-3 shown below.

To the sample 1-2 obtained as described above, a cyan plate of a halftone original document was brought into close contact with the sample and exposed under the exposure condition-1 shown below. Then, the magenta plate was brought into close contact with the sample and exposed under the exposure condition-2 shown below. Then, the yellow plate was brought into close contact with the sample and exposed under the exposure condition-3 shown below. Further, the black plate was brought into close contact with the sample and exposed under the exposure condition-4 shown below.

As the halftone dot original, an original prepared by the AM screen method, which consists of halftone dots of 300 lines per inch, was used. An original prepared by the so-called FM screening method in which the size of each halftone dot was approximately 20 μm was also used. The number of halftone dots per inch ² when the halftone dot area ratio was 40% was 90 × 10 ^{3 for the} former document. The latter was 645 × 10 ³ .

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.

(Exposure condition-1) When exposing each of the light-sensitive materials through a red filter (Ratten No. 26) and an ND filter to expose white light, the ND filter density is adjusted so that the red density after development processing is Exposure is performed for a minimum of 0.5 seconds with the minimum exposure amount.

(Exposure condition-2) When exposing each of the light-sensitive materials to white light through a green filter (Ratten No. 58) and an ND filter, the ND filter density is adjusted so that the green density after development processing is Exposure is performed for a minimum of 0.5 seconds with the minimum exposure amount.

(Exposure condition-3) When exposing each of the light-sensitive materials through a blue filter (Ratten No. 47B) and an ND filter to expose white light, the ND filter density is adjusted so that the blue density after development processing is Exposure is performed for a minimum of 0.5 seconds with the minimum exposure amount.

(Exposure condition-4) When exposing each white material through an infrared transmission filter and an ND filter, the density of the ND filter is adjusted to minimize the black density after development. Exposure for 0.5 seconds with a limited exposure amount.

A daylight fluorescent lamp was used as the light source under the exposure conditions-1 to 3. A xenon lamp was used as a light source under exposure condition-4.

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

A part of another sample was exposed under the same conditions as in the case of the fresh solution treatment and processed in the same manner as in the processing step-1, but the developer in the processing step-1 was replenished with the replenished developing solution. The sample 1-1 was run until the total amount of the replenisher was three times as large as that in the developing tank, and the resulting developer, bleach-fixing solution, and stabilizing solution were used for processing. (Running liquid treatment) Of the obtained images, the image quality based on the black plate was visually evaluated by loupe observation for dot quality at points where the dot areas were 5% and 40%, and was scored at 5 points. Further, the neutrality of the black image based on the black plate was measured using a densitometer. That is, blue density DB, green density DG, red density D obtained from a densitometer at a dot area of 40%
R was measured, DB / DG and DR / DG were calculated, and the values for the new solution were set to 100, and displayed as relative values.

(Processing Step-1) Processing Step Temperature Time Immersion (Developer) 37 ° C 12 seconds Fog exposure-12 seconds Development 37 ° C 95 seconds Bleach fixing 35 ° C 45 seconds Stabilization 25-30 ° C 90 seconds Drying 60- 85 ° C 40 seconds Color developer composition Benzyl alcohol 15.0 ml Cerium sulfate 0.015 g Ethylene glycol 8.0 ml Potassium sulfite 2.5 g Potassium bromide 0.6 g Sodium chloride 0.2 g Potassium carbonate 25.0 g T-1 0.1 g Hydroxylamine sulfate 5.0 g Sodium diethylenetriamine pentaacetate 2.0 g 4-Amino-N-ethyl-N- (β-hydroxyethyl) aniline sulfate 4.5 g Optical brightener (4,4'-diaminostilbene disulfonic acid derivative) 1.0 g Potassium hydroxide 2.0 g Diethylene glycol 15.0 ml Water is added to bring the total volume to 1000 ml, and the pH is adjusted to 10.15.

Bleach-fix solution composition Diethylenetriamine pentaacetate ferric ammonium 90.0 g Diethylenetriamine pentaacetic acid 3.0 g Ammonium thiosulfate (70% aqueous solution) 180.0 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 1000 ml.

Composition of stabilizing solution o-phenylphenol 0.3 g potassium sulfite (50% aqueous solution) 12.0 ml ethylene glycol 10.0 g 1-hydroxyethylidene-1,1-diphosphonic acid 2.5 g bismuth chloride 0.2 g zinc sulfate heptahydrate 0.7 g Ammonium hydroxide (28% aqueous solution) 2.0 g Polyvinylpyrrolidone (K-17) 0.2 g Optical brightener (4,4'-diaminostilbenedisulfonic acid derivative) 2.0 g Add water to bring the total volume to 1000 ml. PH 7 with sulfuric acid. Adjust to 5.

The stabilization treatment was a countercurrent system having a two tank structure.

The formulation of the replenisher for the running process 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 diethylenetriamine pentaacetate 2.0 g 4-Amino-N-ethyl-N- (β-hydroxyethyl) 5.4 g Aniline sulfate Optical brightener (4,4'-diaminostilbene disulfonic 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 the pH to 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 replenishing solution, the bleach-fixing solution and the stabilizing solution was 320 ml per 1 m ^{2 of} the light-sensitive material.

A color proof consisting of halftone images was prepared by using Konsensus 570 manufactured by Konica Corporation. The processing was continuously carried out until the total amount of the color developing replenisher replenished became three times the amount in the color developing tank.

However, the halftone dot quality is relatively scored with 5 being the best halftone dot and 1 being the worst halftone dot quality.

Further, the neutrality was expressed as a relative value, with DB / DG and DR / DG in the case of the new solution being 100, respectively.

[0178]

[Table 1]

From the results shown in Table 1, it can be seen that the samples of the present invention are stable and good on the FM screen with little fluctuation due to the halftone dot quality of the black image and neutrality processing.

Example-2 Sample-2 was prepared according to the sample 1-1 prepared in Example-1. However, the emulsion was additionally added to the eighth blue-sensitive layer of Sample 1-1 as follows. An emulsion was additionally added to the fourth green sensitive layer of Sample 1-1 as follows. Furthermore, Sample 1-1
The emulsion was additionally added to the second red-sensitive layer of No. 2 as shown in Table 21. Sample 2 was prepared in the same manner as sample 1-1 except for the above.

Coating amount (g / m ² ) Eighth layer Infrared photosensitive silver chlorobromide emulsion (EM-IR) 0.3 (Blue sensitive layer) Fourth layer Infrared photosensitive silver chlorobromide emulsion (EM-IR) ) 0.28 (green-sensitive layer) second layer infrared-sensitive silver chlorobromide emulsion (EM-IR) 0.25 (red-sensitive layer) For Sample-2, blue-sensitive emulsion, green-sensitive emulsion, red-sensitive emulsion , The infrared-sensitive emulsion was measured at the wavelength showing the maximum of each spectral sensitivity, the difference in sensitivity was blue-sensitive emulsion, green-sensitive emulsion,
The sensitivity difference between the red-sensitive emulsion and the infrared-sensitive emulsion was more than 6 times that of the other three emulsions.

A cyan plate of a halftone original document was brought into close contact with the obtained sample-2 and exposed under the exposure condition-1 described in Example-1. Then, the magenta plate was brought into close contact with the sample and exposed under the exposure condition-2 shown below. Then, the yellow plate was brought into close contact with the sample and exposed under the exposure condition-3 described in Example-1. Further, the black plate was brought into close contact with the sample and exposed under the exposure condition-4.

For the sample 1-1 produced in Example-1,
Of the original halftone dots, a black plate and a cyan plate were brought into close contact with the sample and exposed under the above exposure condition-1. Next, the black plate and the magenta plate were brought into close contact with the sample and exposed under the exposure condition-2. Next, the black plate and the yellow plate were brought into close contact with the sample and exposed under the above exposure condition-3.

As the halftone dot original, the same original as that used in Example-1 was used.

When performing this exposure, the entire surface to be exposed was simultaneously irradiated with the light from the light source to perform the exposure. (Simultaneous whole surface exposure) Next, a slit-shaped exposure window was installed in the light source, and the light irradiated through the window was used for exposure. The exposure was performed by scanning the photosensitive material. (Scanning exposure) Further, the above scanning exposure was repeated, but the exposure was performed on the photosensitive material side of the exposure window through a means for improving the light parallelism of the honeycomb structure. (Honeycomb scanning exposure) In each of the above-mentioned simultaneous whole surface exposure, scanning exposure, and honeycomb scanning exposure, the registration mark position indicating the reference of the original position of the yellow plate, magenta plate, cyan plate, and black plate of the document is set from the reference point. Exposure was carried out by arranging them so as to be displaced by 20 μm in the respective directions.

With respect to the obtained image, the neutrality was measured with respect to an image in which each of the yellow plate, the magenta plate, the cyan plate and the black plate was 50%. Here, the results of measuring and evaluating DR / DB as an index of neutrality are shown. However, when the value of DR / DG when the register mark of the halftone dot is in the normal position was set to 100, the value of DR / DG when the register mark was misaligned was displayed.

[0187]

[Table 2]

As is clear from Table 2, in Sample 1-1 other than the present invention, when an FM screen original is used, if the register mark is slightly misaligned, the neutrality is greatly deteriorated. At -2, it can be seen that the deterioration of the neutrality is suppressed to a small level and improved. Moreover, it can be seen that the neutrality is improved by the scanning exposure as compared with the simultaneous exposure on the entire surface, and further improved when a means for improving the parallelism is used to obtain a stable image with respect to register mark misalignment.

[0189]

The silver halide color photographic light-sensitive material for producing a color proof and the method for producing a color proof according to the present invention were obtained by color separation and halftone dot image conversion using a silver halide color photographic light-sensitive material. When making a color proof from halftone dot image information, make it so that the image quality such as halftone dot quality and image density is similar to that of the printed matter, and even if there are fluctuations in processing conditions and slight misregistration. A stable image can be obtained.

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Claims (5)

[Claims] 1. A halogen for producing a color proof which exposes a silver halide color photographic light-sensitive material based on halftone dot image information consisting of color-separated yellow image information, magenta image information, cyan image information and black image information. In the silver halide color photographic light-sensitive material, at least a part of the halftone dot image information is 1 inch when the halftone dot area ratio is 40%.
^The halftone image conversion is performed so that the number of halftone dots per ² is 200 × 10 ³ or more, and the silver halide color photographic light-sensitive material is on a support, and a yellow image forming silver halide emulsion is formed. A layer containing a (referred to as Y emulsion), a layer containing a magenta image forming silver halide emulsion (referred to as M emulsion), a layer containing a cyan image forming silver halide emulsion (referred to as C emulsion) and a fourth It has a black image forming silver halide emulsion (referred to as S emulsion) and is at least 6 times more than the other three emulsions in the spectral sensitivity region of any of the Y emulsion, M emulsion, C emulsion and S emulsion. A silver halide color photographic light-sensitive material for producing a color proof, which has a high sensitivity spectral sensitivity region. 2. A method for producing a color proof in which a silver halide color photographic light-sensitive material is exposed on the basis of halftone image information consisting of color-separated yellow image information, magenta image information, cyan image information and black image information. 2. A method for producing a color proof, wherein the silver halide color photographic light-sensitive material for producing a color proof according to claim 1 is used. 3. The halftone dot image information is halftone dot image information produced by frequency modulation.
A method for producing the color proof described. 4. A halftone image in which the halftone image information is recorded on a film, and the exposure is performed by bringing the film into close contact with the silver halide color photographic light-sensitive material of claim 1 and scanning the light source. The method according to claim 2, wherein
Alternatively, the method for producing a color proof according to item 3. 5. The method for producing a color proof according to claim 4, wherein the light from the light source is exposed through an optical means for improving parallelism.