JPH08314081A - Silver halide color photographic light-sensitive material and method for producing color proof - Google Patents

Abstract

(57) [Abstract] [Purpose] Excellent dot reproducibility when producing a color proof from halftone image information obtained by color separation and halftone image conversion using a silver halide color photographic light-sensitive material. It can also be used for FM screening applications (especially excellent in gray and secondary color reproduction in the middle to low density range), excellent in black (gray) color reproduction and halftone dot reproducibility (dot gain), and Provided are a silver halide color photographic light-sensitive material excellent in white background, surface smoothness, curl and curl and a method for producing a color proof. In a silver halide color photographic light-sensitive material containing at least 2 g / m ² or more of white pigment, a yellow image forming silver halide emulsion containing layer, a magenta image forming silver halide emulsion containing layer, and a cyan image forming silver halide. An emulsion-containing layer and a fourth black image-forming silver halide emulsion, and in the spectral sensitivity region of any of the Y emulsion, M emulsion, C emulsion and S emulsion, the other three A silver halide color photographic light-sensitive material having a spectral sensitivity region at least 6 times higher in sensitivity than an emulsion.

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 and a method for producing a color proof.

[0002]

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

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

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

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

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

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

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

In this method, a color-separated black-and-white halftone image composed of a plurality of sheets converted from color originals into color-separated halftone images is successively printed on one sheet of color paper by a method such as contact printing, and color development is performed. A color image formed by a dye formed from a coupler by image development is used as a proofing image, but it is not satisfactory in terms of white background and surface smoothness, and problems such as curling and curling there were.

For the color image thus obtained, the reproduction of black (black) density and the reproduction of small dots are important performances, and it is demanded that the reproduction be closer to that of printed matter.

In recent years, from the viewpoint of improving the image quality of printed matter, it has been strongly demanded that high-precision plate making and printing be put into practical use. However, the conditions for reproducing the fine minimum point are strict, and it is also desired to improve the repeatability thereof. 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, there are problems of deterioration of reproducibility of black (gray) neutrality and deterioration of small point reproducibility.

The frequency modulation (FM) screen method has the same problem as high definition printing. Regarding 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 properties of waves, and the number (frequency) of waves 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, it can be understood as the number of halftone dots per cm at the screen frequency (F) and at the same time the width of the halftone dot. On the other hand, amplitude (A)
Is to describe 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.

Techniques for improving the reproduction of black (gray) are disclosed in JP-A-1-260629 and JP-A-61-233.
Japanese Patent Laid-Open No. 732 and Japanese Patent Laid-Open No. 1632/1992 disclose a technique of providing four emulsion layers of YMC black having different spectral sensitivities. When this technique is applied in high definition, black reproduction is improved, but it is clear that it is not preferable in terms of dot reproducibility (dot gain) and small dot reproduction. There is no description in the above patent regarding the drawbacks of application to high image quality printing, and there is no mention of application to high definition printing or printing by FM screening.

[0014]

Therefore, the first object of the present invention is to produce a color proof from halftone image information obtained by color separation and halftone image conversion using a silver halide color photographic light-sensitive material. In this case, a silver halide color photographic light-sensitive material and a color proof, which can be used for FM screening applications excellent in reproducibility of small dots (especially excellent in gray and secondary color reproduction in the middle to low density range), are prepared. To provide a method. A second object is to provide a silver halide color photographic light-sensitive material excellent in black color (gray) color reproduction and halftone dot reproducibility (dot gain) and a method for producing a color proof. The third purpose is a white background,
It is an object of the present invention to provide a silver halide color photographic light-sensitive material excellent in surface smoothness, curl and curl 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 containing a white pigment of at least 2 g / m ² or more,
A yellow image-forming silver halide emulsion (referred to as Y emulsion) -containing layer, a magenta image-forming silver halide emulsion (referred to as M emulsion) -containing layer, and a cyan image-forming silver halide emulsion (referred to as C emulsion) -containing layer And a fourth black image forming silver halide emulsion (referred to as S emulsion), and said Y emulsion,
A silver halide color photographic light-sensitive material having a spectral sensitivity region which is at least 6 times as sensitive as the other three emulsions in the spectral sensitivity region of any of the M emulsion, C emulsion and S emulsion.

2. In the step of producing a color proof by exposing a silver halide color photographic light-sensitive material to light on the basis of halftone image information consisting of color-separated yellow image information, magenta image information, cyan image information and black image information A part of dot image information has a dot area ratio of 40
%, The number of halftone dots per inch ² is 20.
The halftone image is converted by frequency modulation so as to be 0 × 10 ³ or more, and the silver halide color photographic light-sensitive material is the silver halide color photographic light-sensitive material described in 1 above. And a method for producing a color proof.

3. 2. The silver halide color photographic light-sensitive material as described in 1 above, wherein a hydrophilic colloid layer containing a white pigment is coated adjacent to the reflective support.

4. 4. The halogenated paper according to 1 or 3 above, wherein the reflective support is a base paper in which a composition in which a white pigment is mixed and dispersed in a resin whose main component is polyester is coated on the surface on which the silver halide emulsion-containing layer is coated. Silver color photographic light-sensitive material.

5. Item 1 or 3 above, wherein the substrate of the reflective support and the waterproof resin coating layer on the photosensitive layer coating side are base papers composed of two or more waterproof resin coating layers having different white pigment contents. Silver halide color photographic light-sensitive material.

6. A method for producing a color proof, wherein the silver halide color photographic light-sensitive material is the silver halide color photographic light-sensitive material described in any one of the items 3 to 5.

The present invention will be described in more detail below.

The silver halide color photographic light-sensitive material of the present invention contains a white pigment, and the content thereof means the total amount contained in the reflective support and the photosensitive layer side, and the content of the white pigment of the present invention is contained. The amount is 2 g / m ² or more, preferably 3 g / m ² or more 5
It is 2 g / m ² or less. In the present invention, it is preferable that a hydrophilic colloid layer containing a white pigment is coated on the side of the photosensitive layer on a reflective support containing a white pigment.

The white pigment of the present invention is, for example, rutile type titanium dioxide, anatase type titanium dioxide, barium sulfate,
Barium stearate, silica, alumina, zirconium oxide, kaolin and the like can be used, but titanium dioxide is preferable for various reasons. In order to include the white pigment in the hydrophilic colloid layer, it is preferable that the white pigment is dispersed in a water-soluble binder of hydrophilic colloid such as gelatin which allows the treatment liquid to penetrate. The amount is preferably 1 g / m ² or more 5
It is preferably 0 g / m ² or less, more preferably 2 g / m ² or more and 20 g / m ² or less.

The halftone image used in the present invention is most effective when it is a halftone image formed by a frequency-modulated so-called FM screen method called a screening method. That is, when a color proof is produced by a method other than the present invention from halftone dot image information created by frequency modulation, the average distance between the halftone dots is kept at a certain distance or more when the halftone dot% of the original is small. However, in the case of frequency-modulated halftone dots, the average distance between the halftone dots gets closer to each other more rapidly as compared with the case of AM modulation as the halftone dot% increases. The reason is that the variation 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.

The silver halide color photographic light-sensitive material of the present invention contains a layer containing a yellow image forming silver halide emulsion (referred to as Y emulsion) and 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 (referred to as S 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.

One of the most preferred embodiments of the present invention is
The S emulsion is contained in the black image forming 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. . Further, the order of coating from the reflective support can be arbitrarily selected.

The silver halide color photographic light-sensitive material (hereinafter, also simply referred to as light-sensitive material) of the present invention includes Y emulsion, M emulsion,
Both the C emulsion and the S emulsion have at least 6 in the spectral sensitivity region as compared with the other three emulsions.
It is a light-sensitive material having a spectral sensitivity region with high double sensitivity. 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 which is at least 8 times higher in sensitivity 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 at least 6 times as high as 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 light-sensing 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 ± 30 nm, the M emulsion is 460 ± 30 nm, the C emulsion is 540 ± 30 nm, and the S emulsion is 640 ± 30 nm. It is also preferable to set to. In another preferable example, the M emulsion is 580 nm, the C emulsion is 660 nm, and the Y emulsion is 750 n.
The m and S emulsions can be set to 850 nm. In another preferred example, the Y emulsion is 540 nm and the M emulsion is 38 nm.
0 nm, C emulsion can be set to 460 nm, and S emulsion can be set 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.

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 the halftone dot image information consisting of the color-separated yellow image information, magenta image information, cyan image information and black image information. In the step of producing the halftone image, a part of the halftone dot image information is frequency-modulated 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 image converted. It is preferably 300 × 10 ³ or more, 400 × 10 ³ or more, and 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 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 to expose the light from the light source 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.

Examples of the polyester resin preferably used for the reflective support used in the present invention include polyethylene terephthalate and modified polyesters having polyethylene terephthalate as a main structure (hereinafter referred to as modified polyesters). Polyethylene terephthalate occupies most of the main chain of the modified polyester and comprises a polyester part and a modified part.

The main chain constituent molecules of the modified portion are terephthalic acid, isophthalic acid, 2,6-
Naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, 1,4-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, p-xylidenedicarboxylic acid,
1,4-cyclohexanedicarboxylic acid, adipic acid, sebacic acid, 5-alkali metal sulfo-isophthalic acid, 4
-Alkali metal sulfo-2,6-naphthalenedicarboxylic acid and the like, and ethylene glycol, propylene glycol, 1,4-butanediol, 1,4-hexylenediol, 1,4 as ester bond glycol (diol). -Benzenediol (hydroquinone),
1,4-cyclohexanediol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol, (number average molecular weight 300 to
30,000), polypropylene glycol (number average molecular weight 300 to 30,000) and the like.

Preferably, the dibasic acid is terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid,
1,4-cyclohexanedicarboxylic acid, 5-metal sulfo-isophthalic acid, 4-metal sulfo-2,6-naphthalenedicarboxylic acid, etc. are used, and as glycols, ethylene glycol, propylene glycol, 1,4-cyclohexanedimethanol, polyethylene. Glycol (number average molecular weight 300 to 30,000) or the like is used. The metal ion of the metal sulfo substituent is sodium, potassium, lithium, cesium, etc., preferably sodium.

The modified portion of the modified polyester useful in the present invention is preferably 50 mol% or less with respect to the total polyester bond, and when it exceeds 50 mol%, physical properties as a reflective support such as mechanical strength, glass transition point, The water resistance is reduced and it becomes difficult to use as a reflective support. It is more preferably 40 mol% and particularly preferably 30 mol% or less.

The compound having an alkali metal sulfo group in the modified portion of the modified polyester is 2 for all ester bonds.
It is preferably contained in a proportion of from 10 to 10 mol%, and the adhesiveness between the emulsion layer and the photographic reflective support is excellent. When this compound having an alkali metal sulfo group, for example, 5-sodium sulfo-isophthalic acid is 2 mol% or less, it is almost the same as polyethylene terephthalate, and the meaning of modification is diminished. On the other hand, if it is 10 mol% or more, the water absorption becomes large, the adhesiveness between the paper reflection support and the resin deteriorates, and there is a risk of peeling during the photographic processing, and the water resistance of the photographic reflection support also deteriorates. Problems arise as a photographic reflective support. It is more preferably 2 to 7 mol%, and particularly preferably 3 to 6 mol%.

For the modified portion of the modified polyester, it is also preferable to use polyethylene glycol and / or saturated aliphatic dicarboxylic acid such as adipic acid together with the sulfo compound.

The modified polyester resin useful in the present invention can be synthesized by a conventionally known polyester production method. For example, in the esterification reaction, both the direct esterification of the acid component with the glycol component and the esterification by the transesterification method with glycol using the acid component as a dimethyl ester can be used. At this time, if necessary, a polyester can be polymerized and synthesized by using a transesterification reaction catalyst for esterification and a polymerization reaction catalyst such as antimony oxide in the polymerization reaction. Regarding the polyester components and the synthetic method described above, for example, Polymer Experimental Science Vol. 5, "Polycondensation and Polyaddition" (Kyoritsu Shuppan, 1980), No. 1
03 to 136, or “Synthetic Polymer V” (Asakura Shoten, 1971), pages 187 to 286, can be referred to.

Specific methods for synthesizing the modified polyester are described in US Pat. No. 4,217,441 and JP-A-5-210199, and the modified polyester useful in the present invention can be synthesized by these methods.

It is necessary to use a polyester (including modified polyester) preferably used in the present invention having a sufficiently high molecular weight. The intrinsic viscosity of the polyester used in the present invention is preferably 0.55 to 0.75 cc / g (25 ° C),
It is more preferably 0.58 to 0.73 cc / g (25 ° C).

The polyester resin preferably used in the present invention is formed into a layer by melt extrusion coating the molten resin on a paper reflection support. In this melt extrusion coating method, the resin composition is melted to a predetermined temperature in an extruder and is run on a paper reflection support (supported by a roll on the back side of the paper reflection support at the coating position). Although the resin composition layer is melt-coated from the die slit, the melt-coated resin composition layer may be a single layer coated from a single slit, or may be a plurality of layers formed from a plurality of slits. . Since the melt extrusion temperature is performed at 200 to 350 ° C., the resin, for example, a polyolefin resin,
Of the polyester resins, polyether resins, polyamide resins, polyimide resins, polycarbonate, and the like, any resin that melts in this temperature range can be mixed and melted together to form a layer.

A white pigment is mixed and dispersed in the polyester resin composition for coating the reflection support on the side coated with the silver halide photosensitive layer of the reflection support used in the present invention, and the white pigment is preferably used. Titanium oxide is used, and white pigments such as zinc oxide, barium oxide and neodymium oxide can also be mixed with titanium oxide and used. There are two types of titanium oxide, anatase type and rutile type. The anatase type is preferably used, but the rutile type is also used. Further, these titanium oxides may be mixed and used.

Further, tinting dyes or pigments such as cobalt blue, ultramarine blue, organic dyes (for example, phthalocyanine dyes) may be contained together with these white pigments, and the content thereof is 0.0001 to 0.05. Weight percent is preferred.

The titanium oxide may be untreated titanium oxide which is not surface-treated, but hydrous aluminum oxide,
Surface treated titanium oxide with various inorganic compounds such as silicon dioxide, zirconium oxide and magnesium hydroxide, or titanium oxide treated with various organic compounds such as various alcohols, surfactants, siloxanes and silane coupling agents.
Further, titanium oxide or the like which has been subjected to both the inorganic surface treatment and the organic surface treatment can be used.

As a method for mixing a white pigment with the polyester resin composition, the resin chips and the white pigment, which are dried by heating the resin under vacuum, are directly sprinkled to a predetermined concentration, and the mixture is put into an extruder. A method in which a resin within a range of 200 to 350 ° C. is melt-mixed at a predetermined temperature and applied on a paper reflection support, and a resin chip and a white pigment are melt-mixed with a kneader such as a kneader in advance and taken out as a colored chip. After vacuum drying, there is a method in which a colored chip having a predetermined concentration is mixed as it is or is mixed with a colorless chip so as to have a predetermined concentration and then melted (mixed) with an extruder. Either method is suitable for the photographic reflective support resin composition of the present invention.

The average particle diameter of the white pigment used above is 0.
1 to 0.8 μm is preferable. The weight ratio of the white pigment to the polyester resin is preferably 5 to 70% by weight, more preferably 7 to 50% by weight, and further preferably 10 to 40% by weight.

The thickness of the polyester and white pigment composition coated on the emulsion coated side of the photographic reflective support of the present invention is 5
100 μm is preferable, 5 to 80 μm is more preferable,
10-60 micrometers is more preferable.

The reflection support used in the present invention is provided with the above-mentioned white pigment-containing polyester resin layer on the surface on which the silver halide photosensitive layer is coated. May be the same as or different from the resin on the photosensitive layer side, but it is preferable to use a resin containing polyester, particularly polyethylene terephthalate as a main component.

Inorganic particles may be mixed in the resin composition of the back layer in order to improve writing properties and ink receptivity, or to provide an antistatic layer. A back coat layer may be provided on. The thickness of the resin layer of the back layer may be determined depending on the balance with the thickness of the resin layer of the photosensitive layer, but is preferably 5 to 100 μm. At this time, the surface of the back resin layer may be subjected to activation treatment such as corona discharge treatment or flame treatment.

<Paper Reflective Support> The paper reflective support (also referred to as base paper) used as the reflective support of the silver halide color photographic light-sensitive material of the present invention is a photographic printing paper grade. Examples of the raw material for the base paper include natural pulp, synthetic pulp, a mixture of natural pulp and synthetic pulp, and various raw materials for laminated paper. As the natural pulp, softwood pulp, hardwood pulp, mixed pulp of softwood pulp and hardwood pulp, and the like are used. There are neutral paper, acid paper, etc. produced by the manufacturing method, but it does not depend on the type of the base paper according to the manufacturing method, and any other neutral paper, acid paper, etc. may be used. It is preferable to use a grade base paper. Particularly, photographic printing paper grade neutral paper is preferable. The paper thickness is preferably 40 to 250 μm.

The above-mentioned paper reflection support may be blended with additives such as a sizing agent, a fixing agent, a tension enhancer, a denaturant, an antistatic agent, a dye and an antifoggant which are generally used in papermaking. Alternatively, a surface sizing agent, a surface tension agent, an antistatic agent, or the like may be appropriately applied to the surface.

In the reflective support of the present invention, the content of the white pigment in the water resistant resin coating layer closest to the substrate is such that the content of the white pigment in at least one water resistant resin coating layer above this layer is higher than that of the water resistant resin coating layer. It is preferably lower than the rate. In a further preferred embodiment, the reflective / reflection support having the highest content of white pigment in the waterproof resin coating layer closest to the photosensitive layer, or the reflective / reflection support comprising at least three waterproof resin coating layers, the multilayer A reflective support having the highest content of white pigment in the intermediate layer of the water resistant resin layer can be mentioned. The content of the white pigment in each layer of the multilayer waterproof resin layer is preferably 0% by weight to 45% by weight, more preferably 0% by weight.
% To 40% by weight. In addition, the content of the layer having the highest content of white pigment in the multilayer waterproof resin is preferably 9% by weight to 45% by weight, more preferably 20% by weight.
-40% by weight. If the content of the white pigment in this layer is less than 9% by weight, the effect of enhancing the sharpness of the image is low, and if it exceeds 45% by weight, the melt-extruded film is liable to crack.

In the reflective support of the present invention, the content of the white pigment in the water resistant resin coating layer closest to the substrate is at least one white pigment contained in the water resistant resin coating layer above this layer. It is preferably lower than the rate. In a further preferred embodiment, the reflective support having the highest content of white pigment in the waterproof resin coating layer closest to the photosensitive layer, or the reflective support comprising at least three waterproof resin coating layers, and A reflective support having the highest content of white pigment in the intermediate layer of the resin layer can be mentioned. The content of the white pigment in each layer of the multilayer waterproof resin layer is 0% by weight to 45% by weight, preferably 0% by weight to 40% by weight. In addition, the content of the layer having the highest content of white pigment in the multilayer waterproof resin is 9% by weight to 45% by weight, and more preferably 20% by weight to 40% by weight. If the content of the white pigment in this layer is less than 9% by weight, the effect of enhancing the sharpness of the image is low, and if it exceeds 45% by weight, the melt-extruded film is liable to crack.

The water-resistant resin and the white pigment are mixed by using a metal salt of a higher fatty acid, a higher fatty acid ethyl ester, a higher fatty acid amide, a higher fatty acid or the like as a dispersion aid, and a two-roll, three-roll, kneader, Banbury mixer, etc. A masterbatch formed into pellets by kneading into the resin with the kneader is used. The concentration of the pellet-shaped white pigment is generally about 30% by weight to 75% by weight, and the dispersion aid is generally about 0.5% by weight to 10% by weight with respect to the white pigment.

The water resistant resin layer preferably contains a bluing agent in order to make the white background of the image appear whiter. As the bluing agent, generally known ultramarine blue, cobalt blue, cobalt oxide phosphate, quinacridone pigment and a mixture thereof are used. The particle size of the bluing agent is not particularly limited, but the particle size of a commercially available bluing agent is usually about 0.3 μm to 10 μm, and if the particle size is within this range, there is no particular problem in use.

The content of the bluing agent in the multilayer waterproof resin layer of the reflective support used in the present invention is preferably such that the content of the uppermost layer of the waterproof resin is equal to or higher than the content of the lower layer. The content of the bluing agent is preferably 0.2% by weight to 0.4% by weight in the uppermost layer and 0 to 0.15% by weight in the layer on the lower side thereof.

The bluing agent is kneaded into the waterproof resin with a kneading machine such as a two-roll, three-roll, kneader, Banbury mixer or the like, formed into pellets, and used as a masterbatch. The concentration of the bluing agent in the pellet is 1% to 30% by weight. When making pellets of bluing agent, you can knead white pigment together,
Further, in order to assist the dispersion of the bluing agent, a low molecular weight water resistant resin, a metal salt of a higher fatty acid, a higher fatty acid ester, a higher fatty acid amide, a higher fatty acid or the like can be used as a dispersing aid.

An antioxidant may be contained in the water resistant resin, and the content of the antioxidant is 50 with respect to the water resistant resin.
~ 1000 ppm is suitable. The masterbatch containing the white pigment and / or the bluing agent thus produced is appropriately diluted with a water resistant resin before use.

As the method for forming the multi-layered waterproof resin layer in the present invention, the pellet containing the above-mentioned white pigment and / or bluing-in agent which has been heated and melted is melted on a running substrate such as paper or synthetic paper, or if necessary. Accordingly, there is a method of diluting with a heat-resistant resin and melting it, and then forming by a sequential laminating method or a laminating method using a multi-layer extrusion die of a foot block type, a multi-manifold type, or a malte slot type. The shape of the multilayer extrusion die is generally a T die, a coat hanger die or the like, and is not particularly limited. The outlet temperature at the time of heat-melt extrusion of the waterproof resin is usually 280 ° C to 34 ° C.
The temperature is 0 ° C, particularly preferably 310 ° C to 330 ° C. or,
Before coating the substrate with the resin, it is preferable to subject the substrate to activation treatment such as corona discharge treatment, flame treatment, glow discharge treatment and the like.

The total thickness of the multilayer waterproof resin (white pigment composition) coated on the emulsion coated side of the base paper of the reflective support used in the present invention is preferably 5 to 100 μm.
˜80 μm is more preferable. More preferably 10 to 50
μm. If it is thicker than 100 μm, the brittleness of the resin is emphasized, causing problems such as cracking and other physical properties. 5μ
When the thickness is less than m, the waterproof property which is the original purpose of the coating is impaired, the whiteness and the surface smoothness cannot be satisfied at the same time, and the physical properties of the reflective support are too soft, which is not preferable.

The thickness of each layer of the multilayer waterproof resin layer is preferably 0.5 μm to 50 μm. For example, in the case of a multilayer waterproof resin layer of a multilayer waterproof resin layer having a two-layer structure, the thickness of each layer is preferably 0.5 μm to 50 μm, and the combined total thickness is preferably within the above range. In the case of a three-layer structure, the film thickness of the uppermost layer is 0.5 μm to 10 μm, the film thickness of the intermediate layer is 5 μm to 50 μm, and the lower layer (layer closest to the substrate)
The film thickness is preferably 0.5 μm to 10 μm. When the film thickness of the uppermost layer and the lowermost layer is 0.5 μm or less, die lip streaks are likely to occur due to the action of the highly filled white pigment in the intermediate layer. On the other hand, the top layer, the bottom layer, especially the top layer has a thickness of 1
If it exceeds 0 μm, the sharpness is lowered.

Coating on the surface of the base paper which is not the emulsion coated side,
The thickness of the resin or resin composition is preferably 5 to 100 μm, more preferably 10 μm to 50 μm. If the thickness exceeds this range, the brittleness of the resin is emphasized, causing problems such as cracking and other physical properties. Below this range, the waterproofing property, which is the original purpose of the coating, is impaired, and the physical properties of the reflective support are too soft, which is not preferable.

Further, it is preferable to coat a hydrophilic colloid layer containing a white pigment on the above-mentioned reflective support because the sharpness is improved. Further, it is a preferred embodiment of the present invention that the hydrophilic colloid layer is adjacent to the reflective support. 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.

The surface gloss on the image forming layer side of the light-sensitive material according to the present invention preferably has a gloss close to that of a printed matter,
For example, the glossiness GS (60 °) measured by the method specified in JIS-Z 8741 of the surface of the image forming layer after treatment is 5 to 60.
Are preferred.

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 the fine particle powder (matting agent) and its use, it is preferable to use the technique described in JP-A-6-95283, page 4, left column, line 42 to page 4, right column, line 33.

As the silver halide emulsion used in the light-sensitive material of the present invention, a surface latent image type silver halide emulsion which forms a latent image on the surface by imagewise exposure is used to develop a negative image. You may use the silver halide emulsion. 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 emulsion containing the internal latent image type silver halide emulsion grains means 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 above-mentioned fog treatment may be performed by exposing the whole surface, chemically using a fog agent, using a strong developing solution, or by heat treatment.

The above-mentioned 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 above photographic light-sensitive material, and it is also possible to apply high illuminance light such as flash light for a short time, and it is weak. You may apply light for a long time. Further, the time of the whole surface exposure can be varied within 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 above-mentioned 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.

As the technology of the fogging agent that can be used in the light-sensitive material according to the present invention, use is made of the technology described in JP-A-6-95283, page 18, right column, line 39 to page 19, left column, line 41. Is preferred.

The previously unfogged internal latent image type silver halide grains which can be used in the light-sensitive material of the present invention mainly form a latent image inside the silver halide grains,
An emulsion having silver halide grains having most of the light-sensitive nuclei inside the grains, and any silver halide such as silver bromide, silver chloride, silver chlorobromide, silver chloroiodide, silver iodobromide. , Silver chloroiodobromide and the like.

Particularly preferably, the coated silver amount is about 1 to 3.5 g.
A portion of the sample coated on a transparent reflective support to a range of / m ² was exposed to a light intensity scale for a defined period of time from about 0.1 second to about 1 second and was substantially halogenated. When only the surface image of a grain not containing a silver halide solvent is developed for 4 minutes at 20 ° C. using the following surface developer A, another part of the same emulsion sample is similarly exposed to give the inside of the grain. Is an emulsion showing a maximum density not greater than 1/5 of the maximum density obtained when developed with the following internal developer B for 4 minutes at 20 ° C. More preferably, the maximum density obtained with 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, internal latent image type silver halide preferably used in the light-sensitive material of the present invention. Emulsions include those prepared by various methods. For example, conversion type silver halide emulsions described in U.S. Pat. Emulsion or U.S. Patent 3,271,157
Nos. 3,447,927 and 3,53,291, and emulsions having silver halide grains containing polyvalent metal ions, or halogenated compounds containing a dopant described in U.S. Pat. A silver halide emulsion in which the grain surface of silver grains is weakly chemically sensitized, or JP-A-50-8524.
No. 50-38525 and No. 53-2408, silver halide emulsions composed of grains having a laminated structure, and other halogenated compounds described in JP-A Nos. 52-156614 and 55-127549. Such as silver emulsion.

The shape of the silver halide grains used in the present invention is cubic, octahedral, or a mixture of (100) and (111) faces.
It may be any of tetradecahedrons. Average particle size is 0.05-3μ
Those of m can be preferably used. The grain size distribution may be a monodisperse emulsion having uniform grain size and crystal habit, or an emulsion having no uniform grain size or crystal habit, but a monodisperse silver halide emulsion having uniform grain size and crystal habit. Is preferred. In the present invention, the monodisperse silver halide emulsion means that the weight of silver halide contained within a grain size range of ± 20% around the average grain size rm is 60% or more of the total weight of silver halide grains. The content is preferably 70% or more, more preferably 80% or more. Where the average particle size rm
Is the product of the frequency ni of particles having a particle size r i and r i ³
It is defined as the grain size ri when ri ³ becomes 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 to 50,000 times, and measuring the diameter of the particles on the print or the area at the time of projection. (The number of measured particles is indiscriminate
1000 or more) A particularly preferred highly monodisperse emulsion is one having a distribution width of 20% or less defined by (grain size standard deviation / average grain size) x 100 = breadth of distribution (%). Is. Here, the average particle size and the particle size standard deviation are obtained from ri defined above.

The above 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 of the monodisperse emulsions to the same color-sensitive layer.

The grain size of each emulsion layer used in the light-sensitive material according to the present invention is in a wide range 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 inside.

In one of the preferred embodiments of the present invention, the grain size of silver halide is 0.1 μm to 0.6 μm for the red-sensitive layer emulsion.
It is preferable to use 0.15 .mu.m to 0.1 .mu.m to 0.8 .mu.m for the green sensitive layer emulsion and 0.3 to 1.2 .mu.m for the blue sensitive emulsion.

The light-sensitive material according to the present invention preferably contains a nitrogen-containing heterocyclic compound having a mercapto group.
Preferred compounds include JP-A 6-95283, page 19, right column, lines 20 to 49, general formula [XI], particularly preferably, the same publication, page 20, left column, line 5 to page 20, right column, line 2 They are the formula [XII], the general formula [XIII], and the general formula [XIV]. Specific examples of the compound include compounds (1) to (39) described in JP-A 64-73338, pages 11 to 15.

The above-mentioned mercapto compound may be appropriately added depending on the type of compound used and the layer to be added. Generally, when it is added to the silver halide emulsion layer, it is 10 ⁻⁸ per mol of silver halide. The range is preferably from -10 to ² mol, more preferably from 10 ^-6 to 10 ^-3 mol.

In the silver halide color photographic light-sensitive material of the present invention, 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 have mutually different spectral sensitivities. Containing a silver halide emulsion having a wavelength region, and
An emulsion having spectral sensitivity wavelength regions different from each other contained in the yellow, magenta and cyan image forming silver halide emulsion layers in at least one layer of the yellow, magenta and cyan image forming silver halide emulsion layers. It is preferable that a silver halide emulsion having a spectral sensitivity having a common part with any of the above is contained.

As the magenta coupler used in the light-sensitive material according to the present invention, a compound represented by the general formula [M-1] described in JP-A-6-95283, page 7, right column is preferable because of good spectral absorption characteristics of the color forming dye. . Specific examples of preferable compounds include the compound M described on pages 8 to 11 of the same publication.
-1 to M-19 can be mentioned. 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 magenta couplers can be used in combination with other types of magenta couplers, and usually silver halide 1
It is preferably 1 × 10 ⁻³ mol to 1 mol per mol, and more preferably 1 × 10 ⁻² mol to 8 × 10 ⁻¹ mol.

A magenta image formed in the light-sensitive material of the present invention preferably has a spectral absorption λmax of 530 to 560 nm, and a λL0.2 of 580 to 635 nm.

Here, λL0.2 and λmax of the spectral absorption of the magenta image formed by the silver halide color photographic light-sensitive material according to the present invention are values measured by the following method.

(Measurement Method of λL0.2 and λmax) When a positive type emulsion is used in the light-sensitive material of the present invention, a silver halide color photographic light-sensitive material is used in a minimum amount of light to obtain the minimum density of a cyan image. After uniformly exposing with red light and even with the minimum amount of blue light that can obtain the minimum density of the yellow image, applying white light through the ND filter and then developing, integrating it into the spectrophotometer. Attach a sphere, zero-correct with a standard white plate of magnesium oxide, and set the maximum value of the absorbance to 1.0 when measuring the spectral absorption at 500 to 700 nm.
A magenta image is prepared by adjusting the density of the D filter. When a negative emulsion is used in the light-sensitive material, ND
The density of the ND filter is adjusted so that the maximum absorbance similar to that of the above-mentioned positive is obtained when green light is applied through the filter to develop and form a magenta image. 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.

The magenta image forming layer of the silver halide photographic light-sensitive material according to 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 preferred yellow coupler 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 couplers are the couplers represented by the [M-1] when combined with the magenta coupler represented by the general formula [M-1]. Is a coupler having a pKa value not lower than the pKa value of 3 or more.

Specific examples of the above-mentioned yellow coupler include compounds Y-1 and Y-2 described in JP-A-6-95283, pages 12 to 13, and pages 13 to 17 of JP-A-2-139542. The compounds (Y-1) to (Y-58) described can be preferably used, but are not limited thereto.

As the cyan coupler contained in the cyan image forming layer in the light-sensitive material according to the present invention, known phenol type, naphthol type or imidazole type 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. Among them, preferred compounds include the general formulas [C-I] and [C-II] described in JP-A-6-95283, page 13.

The above cyan coupler is usually used in a silver halide emulsion layer in an amount of 1 × 10 ^-3 to 1 per mol of silver halide.
The amount is preferably mol, and more preferably 1 × 10 ⁻² to 8 × 10 ⁻¹ mol.

As the yellow coupler contained in the yellow image forming layer in the light-sensitive material of the present invention, known acylacetanilide type couplers and the like can be preferably used.

Specific examples of the yellow coupler include:
For example, compounds described in JP-A-3-241345, pages 5 to 9, Y
Compounds represented by --I-1 to Y--I-55, or
3-209466 Nos. 11 to 14, compounds Y-1 to Y-30
The compound represented by can also be preferably used. Furthermore, the general formula [Y-
Examples thereof include couplers represented by I].

The spectral absorption λmax of the yellow image formed by the light-sensitive material according to the present invention is preferably 425 nm or more, and the λL0.2 is preferably 515 nm or less.

The above-mentioned spectral absorption λL0.2 of the yellow color image is a value defined by the contents described in JP-A-6-95283, page 21, right column, lines 1 to 24, and it is the spectrum of the yellow dye image. Absorption characteristics indicate the magnitude of unwanted absorption on the long wave side. The yellow coupler is usually used in the silver halide emulsion layer in an amount of preferably 1 × 10 ⁻³ to 1 mol, and more preferably 1 × 10 ⁻² to 8 × 10 ⁻¹ mol, per mol of silver halide. .

The above-described magenta color image, cyan color image,
And to adjust the spectral absorption characteristics of the yellow image,
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-II] described in JP-A-6-95283, page 22.
The compound represented by
It is a compound represented by the general formula [HBS-II] on page 22.

The yellow image forming layer, the magenta image forming layer and the cyan image forming layer in the light-sensitive material according to the present invention are laminated and coated on the reflective support, but the order from the reflective 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 are formed from the side closer to the reflective support. In addition to these, an intermediate layer, a filter layer, a protective layer and the like can be arranged as required.

An anti-fading agent can be used in combination with each of the magenta, cyan and yellow 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, an amine compound represented by formula A described in JP-A-62-182741
The metal complexes represented by the general formulas XII, XIII, XIV, and XV described in JP-A No. 2004-242242 are particularly preferable for magenta dyes. In addition,
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.

When the oil-in-water emulsion dispersion method is used to add the coupler or other organic compound used in the silver halide photographic light-sensitive material of the present invention, the boiling point is usually
Dissolve in a water-insoluble high-boiling point organic solvent of 150 ° C or higher, if necessary, in combination with a low-boiling point and / or water-soluble organic solvent,
Emulsified and dispersed in a hydrophilic binder such as an aqueous gelatin solution using a surfactant. 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, dibutyl phthalate and the like phthalates, tricresyl phosphate, trioctyl phosphate and the like phosphate esters ,
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 represented by the general formula [HBS] described in JP-A-6-95283, page 22.
-I] and [HBS-II], and particularly preferably [7HBS-II]. Specific compounds include, for example, JP-A-2-124568, 53.
~ Compounds I-1 to II-95 described on page 68 can be mentioned.

Preferred compounds as the surfactant used for dispersing the photographic additives used in the light-sensitive material of the present invention and adjusting the surface tension at the time of coating include hydrophobic compounds having 8 to 30 carbon atoms in one molecule. Examples thereof include those containing a group and a sulfonic acid group or a salt thereof. Specifically, JP-A 64-26854
Examples thereof include A-1 to A-11. 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 to coating are short and 10 hours each. Preferably within 3 hours, 20
Within minutes is more preferable.

The silver halide photosensitive material according to the present invention comprises
It is preferable to add a compound that reacts with an oxidized product of a developing agent to a layer between the light-sensitive layers to prevent color turbidity, and to add a compound to the silver halide emulsion layer to improve fog and the like. The compound for this purpose is preferably a hydroquinone derivative, and more preferably a dialkylhydroquinone such as 2,5-di-t-octylhydroquinone. Particularly preferred compounds are compounds represented by the general formula II described in JP-A No. 4-133056, and examples thereof include compounds II-1 to II-14 described on pages 13 to 14 and compound 1 described on page 17. .

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 II described in JP-A 1-250944.
Compounds represented by I-3, compounds represented by the general formula III described in JP-A-64-66646, UV-1L to UV-27L described in JP-A-63-187240, JP-A-4-1633 Examples thereof include compounds represented by the general formula I described in the publication, and compounds represented by the general formulas (I) and (II) described in JP-A No. 5-165144.

The light-sensitive material according to the present invention preferably contains an oil-soluble dye or pigment because the white background 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 silver halide photographic 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 above-mentioned gelatin may be any of alkali-treated ossein gelatin, acid-treated gelatin, gelatin derivative and modified gelatin, but alkali-treated ossein gelatin is particularly preferable. The transmittance of gelatin is preferably 70% or more when a 10% solution is prepared and the transmittance is measured with a spectrophotometer at 420 nm. The jelly strength (according to the Paggy method) of gelatin is preferably 250 or more, and particularly preferably 270 or more. The ratio of gelatin to the total coated gelatin is not particularly limited, but it is preferable to use a large ratio, and specifically, a ratio of at least 20% to 100% will give a preferable effect.

The total amount of gelatin contained on the image forming surface side of the light-sensitive material according to 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 can be determined by converting it to the weight of gelatin containing 11.0% water by the method for measuring water 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.

In the light-sensitive material according to 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 above light-sensitive material has any of the photographic constituent layers of the present invention,
It can be obtained by incorporating a coloring material such as a dye having absorption in the above wavelength. In the color photographic light-sensitive material of the present invention, in any silver halide emulsion layer and /
Alternatively, a water-soluble dye can be contained in the 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.

The above-mentioned carboxyl group, sulfamoyl group,
Examples of the dye having at least one sulfonamide group include compounds represented by the general formulas [[I] to [IX] described in JP-A-6-95283, pages 14 to 16.

Of the above general formulas [I] to [IX], [I] to
Specific examples of the dye represented by [VIII] include I-1 to VIII to 7 described in JP-A No. 4-18545, pages 13 to 35, but are not limited thereto. Absent.

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

The silver halide in the light-sensitive material of 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) 15162 and 17643 can be referred to.

It is preferable to add a fluorescent whitening agent to the light-sensitive material and / or the processing solution according to the present invention in order to improve the whiteness.

When the light-sensitive material of the present invention is developed with a color developing solution, the developing solution, the bleach-fixing solution and the stabilizing solution are respectively a replenishing developing solution, a replenishing bleaching solution, a replenishing fixing solution and a replenishing bleaching solution. The developing process can be continuously performed while replenishing the fixing solution, the replenishing stabilizing solution, and the like.

In the light-sensitive material according to the present invention, the effect of the present invention can be more effectively exhibited when the replenishment amount of the developing solution is 700 cc or less per 1 m ^{2 of the} light-sensitive material. More preferably, the effect of the present invention can be more effectively exhibited when it is 500 cc or less. The other processing solutions are similar to the developing solutions, and the replenishing amount is 700 cc per 1 m ^{2 of the} light-sensitive material.
The following is preferable, and the effect of the present invention can be more effectively exhibited when it is 500 cc or less.

As the developer that can be used in the developer that can be used for developing the light-sensitive material of the present invention, a conventional silver halide developer, for example, polyhydroxybenzenes such as hydroquinone, aminophenols, 3-pyrazolidones, ascorbic acid and its derivatives, reductones, phenylenediamines, etc., or a mixture 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. If these developers are included in the emulsion in advance,
It is also possible to act on the silver halide during immersion in the aqueous solution.

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

Further, known photographic additives can be used in the light-sensitive material of the present invention. Examples of the known photographic additives include RD17643 and RD18716 shown below.
And the compounds described in 1.

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 〃 〃 Antistatic agent 〃 〃 Matting agent 28 XVI 650 Right binder 29 IX 651 Right Is
It is preferable to use a light exposure scanning exposure type automatic developing machine. As a specific example of a device and system for forming a particularly preferable image, Konsensus L and Konsensus 5 manufactured by Konica Corp.
70, Konsensus and the like.

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.

[0133]

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,
Simultaneous addition of an aqueous solution containing ammonia and silver nitrate and an aqueous solution containing potassium bromide and sodium chloride (molar ratio KBr: NaCl = 95: 5) by the control double jet method to form cubic chlorobromide with a particle size of 0.30 μm A silver core emulsion was obtained. At that time, pH and pA were adjusted so that a cube was obtained as a particle shape.
controlled g.

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 a control double jet method. , Average particle size 0.
The shell was formed to 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-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 and an aqueous solution containing potassium bromide and sodium chloride (molar ratio KBr: NaCl = 95: 5) were simultaneously added by the control double jet method, and cubic chlorobromide with a particle diameter of 0.18 μm was added. A silver core emulsion was obtained. At that time, pH and pA were adjusted so that a cube was obtained as a particle shape.
controlled g.

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 a control double jet method. , Average particle size 0.
The shell was formed to 25 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-P2. The breadth of distribution of this emulsion EM-P2 was 8%.

-Preparation of Blue-Sensitive Silver Halide Emulsion- Optimum color sensitization by adding the sensitizing dye BS-1 to Emulsion EM-P1 and adding 600 mg of T-1 per 1 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 emulsion EM-P2 was optimally sensitized by adding sensitizing dyes RS-1 and RS-2. Sensitive emulsion Em-
R1 was made.

—Preparation of Infrared Sensitive Silver Halide Emulsion— Infrared sensitization was carried out in the same manner as for 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-KR was prepared.

-Preparation of pan-sensitive silver halide emulsion-Blue-sensitive emulsion except that the sensitizing dyes BS-1, GS-1, RS-1 and RS-2 were added to emulsion EM-P1 for optimum color sensitization. A pan-sensitive emulsion Em-K was prepared in the same manner as Em-B1.

T-1: 4-hydroxy-6-methyl-1,3,3a, 7-
Tetrazaindene High-density polyethylene on one side, laminated on the other side of molten polyethylene containing anatase-type titanium oxide dispersed in a content of 15% by weight, on a paper-pulp reflective support having a thickness of 110 μm, Em-B1, Em-G1, Em-R1, Em-K, Em-
Using each emulsion of KR, apply each layer of the following composition on the side of polyethylene layer containing titanium oxide, and further apply gelatin 6.00 g / m ² and silica matting agent 0.65 g / m ² on the back side. Multi-layer silver halide color photographic material sample 1-1
Was produced. H-1 and H-2 were added as hardeners. Surfactants SU-1 and SU-2 as coating aids and dispersing aids
Was added to prepare.

SU-1: Di (2-ethylhexyl) sulfosuccinate
Ester Sodium SU-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 ) Eighth layer Gelatin 1.60 (UV absorbing UV absorber (UV-1) 0.070 absorbing layer) UV absorber ( UV-2) 0.025 UV absorber (UV-3) 0.120 Silica matting agent 0.01 7th layer Gelatin 1.10 Pan-sensitive emulsion (Em-K) 0.04 (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-staining agent (HQ-1) 0.004 Compound (SO- 1) 0.30 6th layer Gelatin 0.94 (Intermediate layer) Anti-staining agent (HQ-2, HQ-3, etc. weight) 0.02 Compound (SO-2) 0.05 Anti-irradiation dye (AI-3) 0.03 5th layer Gelatin 1.25 General Sensitive milk (Em-K) 0.05 (Green-sensitive layer) Green-sensitive silver chlorobromide emulsion (Em-G1) 0.32 Magenta coupler (M-1) 0.25 Yellow coupler (Y-3) 0.06 Stain inhibitor (HQ-1) 0.035 Inhibition Agent (T-1, T-2, T-3) (molar ratio 1: 1: 1) 0.0036 Compound (SO-1) 0.38 4th layer Gelatin 0.80 (Intermediate layer) Stain inhibitor (HQ-2) 0.03 Stain Inhibitor (HQ-3) 0.01 Compound (SO-2) 0.10 Anti-irradiation dye (AI-1) 0.04 3rd layer Gelatin 0.90 Pan-sensitive emulsion (Em-K) 0.075 (Red-sensitive layer) Red-sensitive 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 Compound (SO-1) 0.18 2nd layer Gelatin 1.20 (White pigment, anti-staining agent (HQ-2, HQ-3, etc.) 0.02 containing layer) Compound (SO-2) 0.05 Anti-irradiation dye (AI-2) 0.015 Oxidation Titanium 3.00 1st layer Gelatin 1.20 (Anti liquid paraffin 0.55 Deployment layer) anti-irradiation dye (AI-2) 0.040 reflector Support Polyethylene laminated paper (the colorant-containing trace amounts) amount of the titanium oxide 2.00 ※ silver halide emulsion exhibited in terms of silver.

Next, Samples 1-2 to 1-4 were prepared with the following structure, in which the amount of titanium oxide in the third layer was changed. or,
Sample 1-1'was prepared in the same manner as in Sample 1-3, except that the second infrared-sensitive layer was a general-purpose emulsion using a general-purpose emulsion.

Layer composition Coating amount (g / m ² ) 9th layer Gelatin 1.60 (UV absorber UV absorber (UV-1) 0.070 absorber layer) UV absorber (UV-2) 0.025 UV absorber (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 agent (HQ-1) 0.004 Compound (SO-1) 0.30 7th layer Gelatin 0.94 (Intermediate layer) Anti-stain agent (HQ-2, HQ) -3 equivalent weight) 0.02 Compound (SO-2) 0.05 Irradiation prevention dye (AI-3) 0.03 6th 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 Compound (SO- 1) 0.38 5th layer gelatin 0.80 (intermediate layer) Stain prevention (HQ-2) 0.03 Anti-staining agent (HQ-3) 0.01 Compound (SO-2) 0.10 Anti-irradiation dye (AI-1) 0.04 4th layer Gelatin 0.90 (Red-sensitive layer) Red-sensitive 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 Compound (SO -1) 0.18 3rd layer Gelatin 1.20 (white pigment, anti-staining agent (HQ-2, HQ-3, etc. weight) 0.02 containing layer) Compound (SO-2) 0.05 Anti-irradiation dye (AI-2) 0.015 Titanium oxide or less Second layer Gelatin 1.25 (Infrared photosensitive layer) Infrared photosensitive silver chlorobromide emulsion (Em-KR) 1.00 Yellow coupler (Y-2) 0.50 Magenta coupler (M-1) 0.20 Cyan coupler (C-1 ) 0.35 Anti-staining agent (HQ-1) 0.04 Inhibitor (T-1, T-2, T-3) (molar ratio 1: 1: 1) 0.005 Exemplified compound (SO-1) 0.20 1st layer Gelatin 1.20 ( Anti liquid paraffin 0.55 halation layer) Ira Anti-diation dye (AI-2) 0.040 Reflective support Polyethylene laminated paper (containing a trace amount of colorant) Titanium oxide 1.50 * The addition amount of silver halide emulsion is shown in terms of silver.

The structure of each compound is shown below.

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

[0151]

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[0152]

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[0153]

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Samples 1-1 and 1 obtained as described above
-1 ', a black plate and a cyan plate of a halftone original document were brought into close contact with the sample 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 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.

Next, samples 1-2 obtained as described above
For 1-4, 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. Next, the magenta plate was brought into close contact with the sample and the exposure conditions shown below-2
Exposed. 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 a halftone dot original, an original prepared by a screen method consisting 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 1 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. 25) 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 density of the ND filter is adjusted so that the green density after development 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 to white light through a blue filter (Ratten No. 47B) and an ND filter, the ND filter density is adjusted so that the blue density after development is Exposure is performed for a minimum of 0.5 seconds with the minimum exposure amount.

(Exposure Condition-4) When exposing each light-sensitive material through an infrared transmission filter and an ND filter and exposing it to white light, 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.

Under the following processing conditions, the processing was continuously carried out until the total amount of the replenished color developing replenishing solution became three times the amount in the color developing tank.

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 Dry 60-85 ° C 40 seconds Color development Liquid composition Benzyl alcohol 15.0 ml Ceric 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 Diethylenetriamine sodium pentaacetate 2.0 g 4-Amino-N-ethyl-N- (β-hydroxyethyl) aniline sulfate 4.5g Optical brightener (4,4'-diaminostilbene disulfonic acid derivative) 1.0g Potassium hydroxide 2.0g Diethylene glycol 15.0ml Water In addition, adjust the total volume to 1000 ml and adjust to pH 10.15.

Bleach-fix solution composition Diethylenetriamine pentaacetate ferric ammonium 90.0g Diethylenetriamine pentaacetic acid 3.0g Ammonium thiosulfate (70% aqueous solution) 180.0ml Ammonium sulfite (40% aqueous solution) 27.5ml 3-Mercapto-1,2,4-triazole Adjust to pH 7.1 with 0.15g potassium carbonate or glacial acetic acid, and add water to make the total volume 1000ml.

Composition of stabilizing solution o-Phenylphenol 0.3g Potassium sulfite (50% aqueous solution) 12.0ml Ethylene glycol 10.0g 1-Hydroxyethylidene-1,1-diphosphonic acid 2.5g Bismuth chloride 0.2g Zinc sulfate heptahydrate 0 0.7g Ammonium hydroxide (28% aqueous solution) 2.0g Polyvinylpyrrolidone (K-17) 0.2g Optical brightener (4,4'-diaminostilbene disulfonic acid derivative) 2.0g Add water to make the total volume 1000ml Adjust to pH 7.5 with ammonium or sulfuric acid.

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

The prescription 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 2.0g 4-Amino-N-ethyl-N- (β-hydroxyethyl) 5.4g Aniline sulfate Optical brightener (4,4'-diaminostilbene disulfonic acid 1.0g derivative) Potassium hydroxide 2.0g Diethylene glycol
18.0 ml of water is added to bring the total volume to 1 liter and the pH is adjusted to 10.35.

(Bleach-fixing solution replenisher) 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 produced using Konsensus 570 manufactured by Konica Corporation. The processing was continuously carried out until the total amount of the color developing replenisher replenished reached 3 times the amount in the color developing tank.

In addition to these, the above 1-1 'and 1-
3 was exposed under the following conditions, treated under the above-mentioned treatment conditions, and measured from the characteristic curve obtained by measuring the concentration with a PDA-84 type densitometer manufactured by Konica Corporation. The sensitivity of the silver halide emulsion was determined.

(Exposure condition-E) Samples 1-1 'and 1-
3 is exposed to white light for 0.5 seconds through a red filter (Ratten No. 25) and a wedge, and then exposed to a xenon lamp through an infrared transmission filter and an ND filter. At that time, the density of the ND filter is adjusted, and exposure is performed for 0.5 seconds with the minimum exposure amount that minimizes the red density of the white background after the development processing.

(Exposure condition-F) Samples 1-1 'and 1-
3 is exposed to white light for 0.5 seconds through a green filter (Ratten No. 58) and a wedge, and then exposed to a xenon lamp through an infrared transmission filter and an ND filter. At that time, the density of the ND filter is adjusted, and exposure is performed for 0.5 seconds with the minimum exposure amount that minimizes the green density of the white background after the development processing.

(Exposure Conditions-G) Samples 1-1 'and 1-
3 is exposed to white light for 0.5 seconds through a blue filter (Ratten No. 47B) and a wedge, and then exposed to a xenon lamp through an infrared transmission filter and an ND filter. At that time, the density of the ND filter is adjusted, and exposure is performed for 0.5 seconds with a minimum exposure amount that minimizes the blue density of the white background after the development processing.

(Exposure condition-H) Samples 1-1 'and 1-
3 is exposed with a xenon lamp through a wedge, and then through a red filter (Ratten No. 25) and an ND filter. Next, the green filter (Ratten N)
o. 58) and through an ND filter. Furthermore, a blue filter (Ratten No. 47B) and ND
Expose through a filter. At that time, the respective ND filter densities are adjusted, and exposure is performed for 0.5 seconds with the minimum exposure amount that minimizes the density of each color of the white background after the development processing.

A daylight fluorescent lamp was used as the white light source.

Exposure conditions-When the sensitivity of the red-sensitive emulsion obtained by the exposure of E was set to 100, the other emulsions were as follows.

Infrared sensitive emulsion: 10.2 Green sensitive emulsion: 1.
2.9 Blue-sensitive emulsion 9.1 General-sensitive emulsion: 111 When the sensitivity of the green-sensitive emulsion obtained by exposure under the exposure condition-F was set to 100, the other emulsions were as follows.

Infrared sensitive emulsion: 6.2 Red sensitive emulsion: 1
4.9 Blue-sensitive emulsion 13.2 General-sensitive emulsion: 110 When the sensitivity of the blue-sensitive emulsion obtained by exposure under the exposure condition-G was set to 100, the other emulsions were as follows.

Infrared sensitive emulsion: 5.8 Red sensitive emulsion: 8.
2 Blue-sensitive emulsion 11.5 General-purpose emulsion: 120 When the sensitivity of the infrared-sensitive emulsion obtained by exposure under the exposure condition-H was set to 100, the other emulsions were as follows.

Red-sensitive emulsion: 8.5 Green-sensitive emulsion: 5.0
Blue-sensitive emulsion: 3.4 General-sensitive emulsion: 105 From the above, the emulsions of Samples 1-1 and 1-1 'are outside the sensitivity difference of the present invention, and the emulsions of Samples 1-2 to 1-4 are the present invention. It was within the difference in sensitivity.

Among the obtained images, with respect to the image based on the black plate, the halftone dot quality of the points having halftone dot areas of 5% and 40% was visually evaluated by a loupe observation and scored by five sensory evaluations. The dot quality at 5% is small dot reproducibility, 40%
The halftone dot quality was evaluated as a substitute for dot gain. 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, and DB / DG and DR / DG were calculated and evaluated. The results obtained are shown below.

AM screen halftone original white pigment 40% black image halftone quality sample No amount (g / m ² ) DB / DG DR / DG 5% 40% Category 1-1 3 75 80 4 4 4 Comparison 1-1 ′ 3.5 77 77 81 4 4 comparison 1-2 0 85 89 2 3 3 comparison 1-3 3.5 92 92 96 4 5 invention 1-4 10.5 95 98 5 5 invention FM screen halftone original white pigment 40 % Black image Halftone quality Sample No coverage (g / m ² ) DB / DG DR / DG 5% 40% Category 1-1 3 66 75 3 3 Comparison 1-1 ′ 3.5 68 68 78 3 4 Comparison 1- 2 0 82 86 12 Comparison 1-3 3.5 90 90 93 4 4 Inventive 1-4 10.5 92 95 5 4 Inventive Note) ・ The halftone dot quality is 5 which is the best halftone dot quality. Relative evaluation with halftone dot quality as 1 ・ Value in 40% black image is better as it is closer to 100 As is clear from the above results It can be seen that the samples of the present invention have good black (gray) reproducibility (neutrality) and halftone dot quality. Further, it can be seen that the sample of the present invention has good black reproducibility even when an FM screen original is used.

Example 2 Samples 2-3 and 2-4 were prepared in the same manner as in Samples 1-3 and 1-4 of Example 1 except that the third layer of titanium oxide was added to the first layer. did. Samples 1-3 of Example 1
In addition to -4, the same processing as in Example 1 was performed, and the small point reproducibility was visually evaluated with a loupe. As a result, 2% of the samples 1-3 and 1-4 were visible, whereas the samples 2-3 and 2-4 having the titanium oxide layer as the first layer were 1%.
%, The small point reproducibility was good.

Example 3 A polyethylene composition (density 0.95 g / cc, melt index 8.0 g / 10 min) was melt-extruded and laminated at 300 ° C. on the side opposite to the side coated with a silver halide emulsion. To a back laminating layer of 7.5 g / m ² and then to the side on which the silver halide emulsion is applied,
Polyethylene terephthalate composition (intrinsic viscosity 0.72
cc / g) of 80 parts by weight and anatase type titanium oxide white pigment of 20 parts by weight are kneaded, and then melt extruded at 300 ° C. and laminated with a water-resistant resin of 30 g / m ² by laminating to have a resin coating layer on both sides. A paper reflective support having a thickness of 110 μm was prepared. Samples 3-1 to 3-4 were prepared in the same configuration as Samples 1-1 to 1-4 of Example 1 except that this paper reflection support was used. In addition, the same treatment as in Example 1 was performed, and a white background was additionally added for evaluation. The results obtained are shown below.

AM screen halftone original white pigment white 40% black image halftone quality sample No amount (g / m ² ) (440nm concentration) DB / DG DR / DG 5% 40% Category 3-1 3 0.099 75 80 4 4 Comparison 3-2 0 0.105 85 89 2 3 Comparison 1-3 3.5 0.092 92 96 4 5 Invention 1-4 10.5 0.089 95 98 5 5 Invention 3-3 3.5 0.079 93 96 5 5 Invention 3-4 10.5 0.072 95 97 5 5 Present invention Note: A density analyzer on a white background was measured with a color analyzer 607 manufactured by Hitachi, Ltd.

From the above results, it is understood that the use of the paper reflecting support according to the present invention is more preferable in terms of white background.

Example 4 In the preparation of the sample of the present invention of Example 1, a reflective support A and a reflective support B each having a multilayered resin layer on the side coated with a silver halide emulsion as shown below were prepared. When Example 1 was repeated in exactly the same manner except that it was changed, similar results were obtained. In addition, more preferable results were obtained in terms of surface smoothness, curl, and curl on white background and visual evaluation.

[0192] On low-density polyethylene, reflective support A top layer: titanium dioxide content 15% by weight, film thickness 15
μm, total amount of titanium oxide 2.4 g / m ² Bottom layer: titanium dioxide content 0% by weight, film thickness 15 μm
m Reflective support B Top layer ... Titanium dioxide content 10% by weight, film thickness 2.
0 μm, total titanium oxide amount 7.9 g / m ² intermediate layer: titanium dioxide content 25% by weight, film thickness 20
μm bottom layer: Titanium dioxide content 10% by weight, film thickness 2.
Titanium dioxide was added at a rate of 0 μm, and zinc stearate was added at a rate of 3.0% by weight with respect to the amount of titanium dioxide, and kneaded with ultramarine blue (Daiichi Kasei Kogyo DV-1) in a Banbury mixer. After that, it was formed into pellets to form a masterbatch. The titanium dioxide used was 0.15 μm to 0.35 μm in electron microscope measurement, and the amount of hydrated aluminum oxide coated was 0.75% by weight based on titanium dioxide in the form of aluminum oxide. After corona treatment on 80g paper substrate, use a multi-layer extrusion coating die to
Melt extrusion was performed at 20 ° C. to provide a polyethylene laminate layer with the above-mentioned film thickness. The surface of this polyethylene layer was prepared by glow discharge treatment.

Example 5 In Examples 1 to 4, the number per 1 inch ² produced by the FM screening method at a dot area ratio of 40% was 1
When repeated using a halftone original having a size of 500 × 10 ³ , the same results as in Examples 1 to 4 were obtained.

[0194]

The method for producing a silver halide color photographic light-sensitive material and a color proof according to the present invention is based on halftone image information obtained by color separation and halftone image conversion using a silver halide color photographic light-sensitive material. When producing a color proof, it can also be used for FM screening applications with excellent small point reproducibility (especially excellent in gray and secondary color reproduction in the middle to low density range), and color reproduction of a black background (gray). And excellent dot reproducibility (dot gain), and also has excellent effects on white background, surface smoothness, curl and curl.

Continuation of front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical indication location G03F 3/10 G03F 3/10 B (72) Inventor Yasuo Tosaka 28 Horinouchi, Odawara-shi, Kanagawa Konica Stock Company

Claims (6)

[Claims] 1. A silver halide color photographic light-sensitive material containing at least 2 g / m ² or more of a white pigment, a yellow image forming silver halide emulsion (referred to as Y emulsion) containing layer, a magenta image forming silver halide emulsion. An M-emulsion-containing layer, a cyan image-forming silver halide emulsion (C-emulsion) -containing layer, and a fourth black image-forming silver halide emulsion (S-emulsion), and The Y emulsion,
A silver halide color photographic light-sensitive material having a spectral sensitivity region which is at least 6 times as sensitive as the other three emulsions in the spectral sensitivity region of any of the M emulsion, C emulsion and S emulsion. 2. A color proof is prepared by exposing a silver halide color photographic light-sensitive material on the basis of halftone dot image information consisting of color-separated yellow image information, magenta image information, cyan image information and black image information. In the process, a part of the halftone dot image information has a halftone dot area ratio of 40%.
, The number of halftone dots per inch ² is 200
The half-tone image conversion is performed by frequency modulation so as to be 10 ³ or more, and the silver halide color photographic light-sensitive material is the silver halide color photographic light-sensitive material according to claim 1. And a method for producing a color proof. 3. A silver halide color photographic light-sensitive material according to claim 1, wherein a hydrophilic colloid layer containing a white pigment is coated adjacent to the reflective support. 4. The base paper, wherein the reflection support is a base paper coated with a composition in which a white pigment is mixed and dispersed in a resin containing polyester as a main component, on the surface on which the silver halide emulsion-containing layer is coated. Or a silver halide color photographic light-sensitive material as described in 3 above. 5. The base paper of the reflective support and the waterproof resin coating layer on the photosensitive layer coating side thereof are base papers composed of two or more waterproof resin coating layers having different white pigment contents. The silver halide color photographic light-sensitive material according to claim 1. 6. The production of a color proof according to claim 2, wherein the silver halide color photographic light-sensitive material is the silver halide color photographic light-sensitive material according to any one of claims 3 to 5. Method.