JPH0425843A - Photosensitive material - Google Patents

Abstract

PURPOSE:To improve the raw life of the photosensitive material which contains photosensitive microcapsules by specifying drying conditions and humidifiction conditions. CONSTITUTION:A photosensitive layer which contains microcapsules of silver halide, a reducing agent, a polymerizing compound, a color image formation substance, and a base (precursor) is formed on a base body. The photosensitive layer after coating is dried at wet-valve temperature of 1 - 50 deg.C until the water in the coating layer is reduced to <=60% of the weight of hydrophilic colloid in the coating layer, then dried at dry-bulb temperature of 1 - 50 deg.C, and further humidified for >=5 seconds in an atmosphere of 10 - 35 deg. temperature and 40 - 75% relative humidity and then taken up. The material is stored preferably for >=5 hours at 35 - 55 deg.C atmospheric temperature within seven days after being taken up.

Description

Detailed Description of the Invention "Industrial Application Field" A support having a photosensitive layer containing at least one microcapsule containing silver halide, a reducing agent, a polymerizable compound, a color image forming substance, and a base or base precursor. Regarding photosensitive materials.

``Prior Art'' A photosensitive material having a photosensitive layer containing silver halide, a reducing agent, and a polymerizable compound on a support is used in an image forming method in which a latent image of silver halide is formed and a polymerizable compound is polymerized. can be used.

As an image forming method, for example, Japanese Patent Publication No. 45-1114
No. 9, No. 47-20741, No. 49-10697,
JP-A-57-138632 and JP-A No. 5B-1691
Examples include methods described in various publications such as No. 43. In these methods, when exposed silver halide is developed using a developer, the reducing agent is oxidized and at the same time coexisting polymerizable compounds (e.g. vinyl compounds) start polymerizing, resulting in image-like formation. Therefore, the above-mentioned method requires a development process using a liquid, and the process requires a relatively long time.

The present inventors attempted to improve the above-mentioned image forming method and invented a method capable of forming a polymer compound by dry processing, and a patent application for this invention has already been filed (Japanese Unexamined Patent Application Publication No. 1983-1973).
6906), this method is a recording material (photosensitive material) in which a photosensitive layer consisting of a photosensitive silver salt (silver halide), a reducing agent, a crosslinking compound (polymerizable compound), and a binder is supported on a support. ) is imagewise exposed to form a latent image, and then, by heating, a polymer compound is formed in the area where the latent image of the photosensitive silver salt has been formed. That is, this image forming method is a method of polymerizing a polymerizable compound in a portion where a silver halide latent image is formed.

In addition, the present inventors have disclosed that, as one aspect of the above-mentioned image forming method, silver halide, a reducing agent, a polymerizable compound,
Simultaneously with or after imagewise exposure, a photosensitive material having a photosensitive layer containing a color image-forming substance is subjected to a development treatment to polymerize and harden the polymerizable compound, thereby immobilizing the color image-forming portion of the cured portion. A patent application has already been filed for an image recording method characterized by
73145). This image recording method is extremely useful as a color image forming method because a desired color image can be easily obtained by using various dyes with different coloring hues and forms as color image forming substances contained in the photosensitive material. This is an advantageous method. A major feature of this method is that it can use pigments as color image-forming substances, which are characterized by strong line color but cannot be used in ordinary silver halide photographic materials. Furthermore, as a preferred embodiment of a photosensitive material capable of producing a color image, a photosensitive material having a photosensitive layer formed by accommodating the above-mentioned color image forming substance in microcapsules together with a photosensitive component such as silver halide has also been proposed.

In such photosensitive microcapsules, the important point is the method of generating a base for starting the development reaction of silver halide.

JP-A-64-9441, JP-A No. 64-68746, JP-A No. 6
No. 4-68749, etc., contain compounds that generate bases when heated;
No. 40, No. 63-32546, No. 63-186229
and JP-A-1154139 describe methods for using these bases or base precursors.

However, in the base generation methods described in these patents, the base is generated outside the microcapsule containing the silver halide, so it takes time for the base component to penetrate the microcapsule wall. Therefore, it was not possible to increase the development speed sufficiently.

On the other hand, among these photosensitive materials, photosensitive materials containing photosensitive microcapsules containing a base or a base precursor are described in JP-A-63-32251, JP-A-63-926861, JP-A-1-160148, and the like. These photosensitive microcapsules are characterized by rapid development because the base is generated inside the microcapsules and can be developed at a relatively low thermal development temperature.

``Problems to be Solved by the Invention'' The photosensitive materials containing photosensitive microcapsules containing a base or a base precursor described in these patents have the disadvantage of poor shelf life.

It was known that this poor shelf life is mainly caused by reactions caused by bases or base precursors, and is particularly likely to be accelerated at high temperatures. However, when we conducted a simulation experiment in which photosensitive materials were actually manufactured, processed, shipped, and sold, we found significant changes that could not have been predicted from forced aging tests at high temperatures. It was found that this change was largely influenced by the history of the photosensitive material during the process up to processing, rather than by the storage conditions in the test.

It was also found that this change was large during the first few months, and smaller after that.

There has been a desire for a photosensitive material that can be shipped as soon as possible after manufacturing and that exhibits little subsequent change in performance. As a result of studies, the present inventor was able to create a photosensitive material with little change in performance by controlling the history from coating to processing.

``Object of the Invention'' The object of the present invention is to provide a photosensitive material with excellent shelf life.

The present invention also allows rapid thermal development at relatively low temperatures, and does not change photographic performance even when the development temperature changes (
The purpose is to provide a new photosensitive material.

The present invention also aims to provide homogeneous images with no noticeable grain at intermediate densities.

Another object of the present invention is to provide a photosensitive material that has a high maximum image density, a low minimum image density, and is rich in gradations.

Another object of the present invention is to provide a photosensitive material with high sensitivity.

"Means for Solving the Problems" The objects of the present invention have been achieved by the following (1) to (3).

(1) In a photosensitive material having on a support a photosensitive layer containing microcapsules containing silver halide, a reducing agent, a polymerizable compound, a color image forming substance, and a base or base precursor, after coating the photosensitive layer, the coating is applied. The water contained in the layer is 60% of the weight of the hydrophilic colloid contained in the coating layer.
% under a wet bulb temperature of 1-50°C, then drying at a dry bulb temperature of 1-50°C, and then at a temperature of 10-35°C and a relative humidity of 40-75%. A photosensitive material characterized in that it is wetted in an atmosphere of 5 seconds or more and then rolled up.

(2) Within 7 days after winding, the ambient temperature is 35°C or higher and 55°C.
2. The photosensitive material according to claim 1, which has been stored at temperatures below 0.degree. C. for 5 hours or more.

(3) The photosensitive material according to claims (1) and (2), wherein the photosensitive material is sealed in a moisture-proof container at a relative humidity of 30% to 70%.

The photosensitive material of the present invention is dried at a wet bulb temperature of 1 to 50'C until the initial stage of drying, which reduces the water content in the coating layer to a value of 60% or less based on the weight of the hydrophilic colloid contained in the coating layer. and then additionally dried at a dry bulb temperature of 1 to 50°C,
Further, it is preferable to condition the humidity in an atmosphere with a temperature of 10 to 35°C and a relative humidity of 40 to 75% for at least 5 seconds before winding and manufacturing.The wet bulb temperature at the initial stage of drying is more preferably 5 to 45°C.
1. The dry bulb temperature for additional drying is more preferably 20 to 45
℃, and furthermore, humidity control is at a temperature of 15-25℃ and a relative humidity of 5
More preferably 0 to 70%.

Hydrophilic colloids included in the coating layer of the present invention include transparent or translucent hydrophilic binders.

For example, gelatin, gelatin derivatives, cellulose derivatives,
These include natural materials such as starch, carrageenan, gum arabic, etc., and synthetic polymeric materials such as polyvinyl compounds in aqueous solutions such as polyvinyl alcohol, polyvinylpyrrolidone, acrylamide polymers, etc.

If a coating solution containing these hydrophilic binders can be set, it is preferable to perform the initial stage of drying at a wet bulb temperature of 5 to 25°C, which is lower than the setting temperature, and in the case of a coating solution containing a hydrophilic binder that does not set, drying The initial wet bulb temperature is 2
It is best to dry quickly at 5-45°C.

Binders other than hydrophilic colloids, such as dispersed vinyl compounds such as Latinx, may also be used at the same time.

The photosensitive material of the present invention has an ambient temperature of 35% within 7 days of winding.
It has been stored at a temperature of 55°C or higher for 5 hours or more.

Preferably, it is stored in a heated refrigerator for at least 5 hours and up to 7 days at an ambient temperature of 35°C to 45'C within 3 days from 1 hour after winding.

Note that this heating storage may be carried out in the rolled state, or may be carried out after the rolled up photographic material is sealed in a moisture-proof container.

Furthermore, the process may be carried out after the wound photosensitive material is slit or cut into small pieces and placed in a container such as a cassette.

The photosensitive material of the present invention is sealed in a moisture-proof container at a relative humidity of 30% to 70%. Here, the moisture-proof container is one containing a material with a moisture permeability of 103 g/rd-24 hr or less at 40° C. and 90% relative humidity, preferably 1 Og/rr.
It is sealed with a material of f-24hr or less.

For specific examples of these materials, see "New Packaging Materials."
(written by Tadahiko Kuzura and Hewao, published by Kyoritsu Shuppan in 1988). Among them, the material for the multilayer film is preferred, and in particular, at least one layer of the multilayer film is preferably aluminum foil.Next, silver halide that can be used in the present invention will be described.

Light-sensitive materials contain silver chloride, silver bromide, silver halide,
Any grains of silver iodide, silver chlorobromide, silver chloroiodide, silver iodobromide, or silver chloroiodobromide can be used.

Silver halide grains in photographic emulsions include those with regular crystals such as cubes, octahedrons, and tetradecahedrons, those with irregular crystal shapes such as spherical and plate shapes, and those with twin planes. may have crystal defects, or a composite form thereof.

The grain size of the silver halide may be fine grains of about 0.01 micron or less, or large grains with a projected area diameter of up to about 10 microns.

Tabular grains having aspect ratios of about 5 or more can also be used in the present invention. Tabular grains are described by Gutoff, Photographic Science and Engineering.
ence and Engineering), No. 14
9, pp. 248-257 (1970); U.S. Patent No. 4.
No. 434226, No. 4.414.310, No. 4.43
3.048, British Patent No. 4,439.520 and British Patent No. 2.112.157.

The crystal structure may be --like, the inside and outside may have different halogen compositions, it may be a layered structure, or silver halides with different compositions may be joined by epitaxial bonding. It may also be bonded with a compound other than silver halide, such as silver rhodan or lead oxide.

Examples of silver halide photographic emulsions that can be used in the present invention include Research Disclosure (RD) No.

1.7643 (December 1978), pp. 22-23"1
．． Emulsion preparation
n andtypes)', and N(11871
6 (November 1979), p. 648, etc.

The silver halide emulsion used is usually one that has been subjected to physical ripening, chemical ripening, and spectral sensitization. Additives used in such processes are Research Disclosure+-NCL
17643 and K18716, and the relevant parts are summarized in the table below.

Known photographic additives that can be used in the present invention are also described in the above two Research Disclosures, and the relevant descriptions are shown in the table below.

- Attachment 1 "Drawing month" - ■ r 歿LOW C - - ■ l slow - Chemical sensitizers Page 23 Page 648 Right column Anger level increasing agents
Same as above Same as above Spectral sensitizer 23-2
Page 4 Page 648 Right column Chromatic enhancer Same as above
Page 649 Right column Anti-fog agent Pages 24-25 64
Page 9, right column ~ and stabilizer The above-mentioned silver halide grains include Japanese Patent Application Laid-Open No. 63-6
It is preferable to use silver halide grains having a relatively low fog value, such as the light-sensitive material described in Japanese Patent No. 8830.

In order to uniformly contain silver halide in the microcapsules, it is preferable that a copolymer consisting of a hydrophilic repeating unit and a hydrophobic repeating unit be dissolved in the polymerizable compound. For details, please refer to JP-A-62-20
There are descriptions in 9450 and JP-A-63-287844.

As the base and base precursor that can be used in the photographic material of the present invention, inorganic bases and organic bases, or their base precursors (decarboxylation type, thermal decomposition type, reaction type, complex salt forming type, etc.) can be used.

Preferred base precursors include JP-A-59-18
No. 0549, No. 59-180537, No. 59-195
No. 237, No. 61-32844, No. 61-36743
No. 61-51140, No. 61-52638, No. 61. -52639, 61. -53631, same 6
No. 1-53634, No. 61-53635, No. 61-5
No. 3636, No. 61-53637, No. 61-5363
No. 8, No. 61-53639, No. 61-53640,
No. 61-55644, No. 61-55645, No. 61
-55646, 61-84640, 61-10
No. 7240, No. 61-219950, No. 61-251
No. 840, No. 61-252544, No. 61-3134
No. 31, No. 63-316740, No. 64-68746
No. 62-209138 and Japanese Patent Application No. 62-209138, salts of organic acids and bases that are decarboxylated by heating, and
Examples include compounds that eliminate bases upon heating as described in JP-A-59-157637, JP-A-59-166943, and JP-A-63-96159.

The base precursor of the present invention includes 50'C to 2
It is preferable to release the base at 00°C, and the temperature between 80°C and 1
The base precursor used in the present invention is more preferably released at 80°C.
Particularly preferred are those using a guanidine derivative as the base moiety described in JP-A-68746.

The base or base precursor can be used in the optical material in a wide range of amounts. The base or base precursor is suitably used in an amount of 100% by weight or less, more preferably 0.1% by weight of the coating film of the photosensitive layer.
In the present invention, the base and/or base precursor may be used alone or as a mixture of two or more.

In the present invention, the base or base precursor is contained in photosensitive microcapsules. A method for incorporating a base precursor into a capsule is described in Japanese Patent Application Laid-Open No. 64-32251.
It may be introduced directly into a polymerizable compound in the form of solid dispersion as described in Japanese Patent Application No. 63-21.8964 and Japanese Patent Application No. 1-160148.
As described in the specification, the base precursor may be introduced into the polymerizable compound in the form of an emulsification while being dispersed in water.

Specific examples of these bases and base precursors are shown below, but are not limited thereto.

Finally, there are no particular restrictions on the color image-forming substances that can be used in light-sensitive materials (although various types can be used; that is, substances that are themselves colored, dyes, and substances that are colorless or light-colored themselves). However, color image-forming substances also include substances that develop color when exposed to external engineering (heating, pressure, light irradiation, etc.) or contact with another component (color developer).

Preferably, solid pigments are used as color image-forming materials in the present invention.

As the solid material 4 that can be used in photosensitive materials, in addition to commercially available products, known products described in various documents can be used.Regarding literature, color index (C, r,
) Handbook, “Latest Pigment Handbook” edited by Japan Chest T4 Technology Association (1
977), “Latest Pigment Application Technology J CMC Publishing (1)
986), [Printing Ink Technology, (CMC Publishing, 19
(published in 1984), etc.

By color, the types of pigments include white pigments, black pigments, yellow pigments, orange pigments, brown pigments, red pigments, purple pigments, blue pigments, green pigments, fluorescent pigments, metal powder pigments, and others.
Included are polymer-bound dyes.

Specifically, insoluble ab pigments, azo lake pigments, condensed azo pigments, chelate azo pigments, phthalocyanine pigments, anthraquinone pigments, perylene and perinone pigments, thioindigo pigments, quinacridone pigments, dioxazine pigments, and iso-1' pigments. Linone pigments, quinophthalone pigments, dyed with lake pigments, azine pigments, nitroso pigments,
Nitro pigments, natural pigments, fluorescent pigments, inorganic pigments, etc. can be used.

The pigment that can be used in the present invention may be the bare pigment described in 1 above, or may be a pigment that has been subjected to a surface treatment. Surface treatment methods include surface coating with resin or wax;
How to attach surfactants, reactive substances! Methods of bonding (for example, silane coupling agents, epoxy compounds, polyisonanate, etc.) to the pigment surface are considered and are described in the following documents.

Properties and Applications of Metallic Soaps (Saiwai Shobo) Printing Ink Technology (CMC Publishing, 1984) Latest Pigment Application Technology (CMC Publishing, 1986) The particle size of the pigment that can be used in the present invention is 0.05 mm after being dispersed in the polymerizable compound. 01μ～10
It is preferably in the μ range, and more preferably in the range of 0.05 to 1 μ.

The amount of pigment is 5 to 120 parts by weight per 100 parts by weight of the polymerizable compound.
It is preferably used in a proportion of 10 to 60 parts by weight, more preferably 10 to 60 parts by weight.

As a method for dispersing the pigment into the polymerizable compound, known dispersion techniques used in ink production, toner production, etc. can be used. Examples of the dispersing machine include Santo's Mill, Attritor, Burr Mill, Super Mill, Ball Mill, Impeller, Desparza-KD Mill, Colloid Mill, Dynatron, Miki Roll Mill, Pressurized Niegoo, and the like. For details, see "Latest Pigment Application Technology J (CMC Publishing, 1986)"
There is a description in .

Leuco dyes can also be used as color image-forming substances in the present invention.

For S-light materials using leuco dyes, see Japanese Patent Application Laid-open No. 1983
Leuco dyes that can be used in light-sensitive materials are described in JP-A-62-209436, and leuco dyes that can be used are described on pages 2 to 8 of the same publication. Specifically, leuco dyes include triphenylmethane-phthalide series, fluoran series, phenothiazine series, indolyl phthalide series, leucoolamine series, spiropyran series, rhodamine lactam series, triphenylmethane series, azaphthalide series, and chromeno-dyes. Indole type etc. can be used.

For S-light materials using yellow coloring leuco dyes, see JP-A-62-288827 and JP-A-62-288828.
No. 63-112190, and No. 63-25
No. 1.278, No. 63-251279, No. 63-25
1280 and 64-42275, regarding photosensitive materials using cyan color-forming leuco dyes, see JP-A Nos. 63-53542 and 63-113446, and black color-forming leuco dyes. Regarding photosensitive materials using JP-A-63-129338,
-112188, each is described.

On the other hand, examples of substances that develop color due to some kind of energy such as heating, pressure, or light irradiation include thermochromic compounds,
Piezochromic compounds, photochromic compounds, and leuco compounds such as triarylmethane dyes, quinone dyes, indigoid dyes, and azine dyes are known. All of these develop color upon heating, pressurization, light irradiation, or air oxidation.

Examples of substances that develop color upon contact with another component include various systems that develop color due to acid-base reactions, redox reactions, coupling reactions, chelate formation reactions, etc. between two or more components.

For example, "Introductory Chemistry of Special Paper" by Hiroyuki Moriga (1932)
Pressure-sensitive copying paper (pages 29-58), azography (pages 87-95), heat-sensitive coloring by chemical change (pages 118-120), and other known coloring systems, or Kinki Kagaku It is possible to use the coloring system etc. described in the seminar sponsored by the industry association, ``Latest dye chemistry - Attractive uses and new developments as functional dyes - J Proceedings, pp. 26-32 (June 19, 1980). Specifically, a coloring system consisting of a coloring agent with a partial structure such as lactone, lactam, spiropyran, etc. used in pressure-sensitive paper, and an acidic substance (color developer) such as acid clay or phenols;
Systems using azo coupling reactions of aromatic diazonium salts, diasocutes, diazosulfonates with naphthols, anilines, active methylenes, etc.; reactions of hexamethylenetetramine with ferric ions and gallic acid, and phenolphthalene. Chelate-forming reactions such as reactions with combrecranes and alkaline earth metal ions; redox reactions such as the reaction between ferric stearate and pyrogallol and the reaction between silver behenate and 4-methoxy-1-naphthol. Available.

The color image forming substance is preferably used in a proportion of 0.5 to 50 parts by weight per 100 parts by weight of the polymerizable compound,
It is more preferable to use it in a proportion of 2 to 30 parts by weight, and when a color developer is used, it is preferably used in a proportion of about 0.2 to 10.000 parts by weight per 1 part of the color former. preferable.

In addition, when using two types of substances that cause a color-forming reaction when in contact as the solid color image-forming substances described above, one of the substances that cause a color-forming reaction and a polymerizable compound may be placed in microcapsules. A color image can be formed on the photosensitive layer by allowing other substances among the substances contained in the microcapsules and causing the above-mentioned color-forming reaction to exist outside the microcapsules containing the polymerizable compound. A photosensitive material from which a color image can be obtained without using an image-receiving material as described above is described in JP-A-62-209444.

Dyes can also be used in photosensitive materials. For photosensitive materials using dyes, see JP-A-62-1, 87346.
The dye is described on page 307 of the same publication.

As dyes which are themselves colored substances, in addition to commercially available ones, known dyes described in various literatures (for example, "Dye Handbook", collected by the Organic Synthetic Chemistry Association, published in 1970) can be used. Specific examples include dyes such as ab dyes, metal complex azo dyes, pyrazolone azo dyes, anthraquinone dyes, phthalocyanine dyes, carbonium dyes, quinone imine dyes, and methine dyes.

These color image-forming substances may be used alone or in combination of two or more types, such as a mixture of two types of pigments or a mixture of a pigment and a leuco dye.

Next, polymerizable compounds that can be used in the present invention will be described.

The polymerizable compound used in the photosensitive material is a compound in which -S has addition polymerizability or ring-opening polymerizability. Compounds having addition polymerizability include compounds having an ethylenically unsaturated group, compounds having ring-opening polymerizability include compounds having an epochine group, and compounds having an ethylenically unsaturated group are particularly preferred.

Compounds with ethylenically unsaturated groups that can be used in photosensitive materials include acrylic acid and its salts, acrylic esters, acrylamides, methacrylic acid and its salts, methacrylic esters, methacrylamides, and maleic anhydride. Examples include acids, maleic esters, itaconic esters, styrenes, vinyl nityls, vinyl esters, N-vinyl heterocycles, allyl ethers, allyl esters, and derivatives thereof.

Specific examples of polymerizable compounds that can be used in photosensitive materials include n-butyl acrylate, cyclohexyl acrylate, 2-ethyl hequinol acrylate, benzyl acrylate, furfuryl acrylate, and ethyne ethoxy. Ethyl acrylate, tricyclodecanyl oquine acrylate, nonylphenyl oquine ethyl acrylate, 1,3-dioxolane acrylate, hexanediol diacrylate, butanediol diacrylate, neopentyl glycol diacrylate, tricyclodecane dimethylol diacrylate, trimethylol Bronokunton triacrylate,
Pentaerythritol tetraacrylate, nbentaerythritol bentaacrylate, dipentaerythritol hexaacrylate, polyoxyethylated bisphenol A diacrylate, 2-(2-hydroquine)
11-dimethylethyl)-5-hydroxymethyl-5-
Ethyl-1,3-one oxane diacrylate, 2-(2
-Hydroquine-1,1-dimethylethyl)-5,5-dihydroxymethyl-1,3-dioxane triacrylate, triacrylate of propylene oxide adduct of trimethylolpropane, polyacrylate of hydroquine polyether, polynistyl acrylate and Examples include polyurethane axolate.

Other specific examples of methacrylic acid esters include methyl methacrylate, butyl methacrylate, ethylene glycol dimethacrylate, butanediol dimethacrylate, neopentyl glycol dimethacrylate, trimethylolpropane trimethacrylate, pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate, Methacrylate and dimethacrylate of polyoxyalkylenated bisphenol A can be mentioned.

The above polymerizable compounds may be used alone or in combination of two or more. A photosensitive material using a combination of two or more types of polymerizable compounds is described in JP-A-62-210445. Note that a substance in which a polymerizable functional group such as a vinyl group or a vinylidene group is introduced into the chemical structure of a reducing agent can also be used as a polymerizable compound.

Next, the reducing agent that can be used in the present invention will be described.

A reducing agent that can be used in a light-sensitive material has a function of reducing silver halide and/or a function of promoting (or inhibiting) polymerization of a polymerizable compound. There are various types of reducing agents having the above functions. The above-mentioned sensitizers include hydroquinones, catechols, p-aminophenols, p-phinidinediamines, 3-pyrazolidones, 3-aminopyrazoles, 4-amino-5-
Pyrazolones, 5-aminouracils, 4,5-dihydroxy-6-amitubirimidines, reductones, amylreductones, 0- or p-sulfonamidophenols, 0- or p-sulfonamidonaphthols,
24-sulfonamitophenols, 2,4-disulfonamidonaphthols, 0- or p-acylaminophenols, 2-sulfonamidoindanones, 4-
Sulfonamide-5-pyrazolones, 3-sulfonamide indoles, sulfonamitovirazolohenzimidazoles, sulfonamide pyrazolotriazoles, α
- Sulfonamide ketones, hydrazines, etc. By adjusting the type, amount, etc. of the reducing agent, it is possible to polymerize the polymerizable compound in either the area where a latent image of silver halide is formed or the area where a latent image is not formed. In a system in which a polymerizable compound is polymerized in a portion where a silver halide latent image is not formed, l-phenyl-3-pyrazolidones, hydroquinones, and sulfonamidophenols are particularly preferred as reducing agents.

Regarding various reducing agents having the above-mentioned functions, please refer to JP-A-61-183640, JP-A-61-1.88535, JP-A-61-228441, and JP-A-62-1999.
No. 70836, No. 62-86354, No. 62-863
s No. 5, No. 62-206540, No. 62-264
No. 041, No. 62-109437, No. 63-2544
No. 42, Japanese Patent Application No. 63-97379, No. 63-2967
No. 74, No. 63-296775, Patent Application Hei], -27
No. 175, No. 1-54101, No. 1-91162,
1-90087 and other publications (including those described as developing agents or hydrazine derivatives), and the above-mentioned reducing agents are described in T. James + The
Theory of the Photography
c Process 4th edition, pp. 291-334 (197
7) Research Disclosure Magazine Vat, 1
70. i, No. 17029 of June 978 (9-1
5), and also in No. 17643 (pages 22-31) of the same magazine, Vol. 1.176, December 1978. Furthermore, as in the photosensitive material described in JP-A No. 62-210446, a reducing agent precursor capable of releasing the reducing agent under heating conditions or in contact with a base may be used in place of the reducing agent. good. The reducing agents and reducing agent precursors described in each of the above-mentioned publications, specifications, and literature can also be effectively used in the light-sensitive material in this specification. Therefore, the r-reducing agent J in this specification includes the reducing agents and reducing agent precursors described in each of the above-mentioned publications, specifications, and literatures.

Among these reducing agents, those having basicity that form salts with acids can also be used in the form of salts with appropriate acids.

These reducing agents may be used alone, or two or more types of reducing agents may be used in combination as described in each of the above specifications. When two or more types of reducing agents are used together, the interaction of the reducing agents is, first, to promote the reduction of silver halide (and/or organic silver salt) through so-called superadditivity; , silver halide (
The oxidized form of the first reducing agent produced by the reduction of the first reducing agent (and/or organic silver salt) causes the polymerization of the polymerizable compound (or suppresses the polymerization) through a redox reaction with other reducing agents coexisting. ), etc. can be considered. However, in actual use, the reactions described above may occur simultaneously, so it is difficult to specify which effect is responsible.

Specific examples of the above reducing agent are shown below.

CHl CH.

CH C 9H.

C,H.

(ID The amount of reducing agent added can be varied widely. Generally, it is 0.1 to 1500 mol%, preferably 10 to 1500 mol%, based on the silver salt.
It is 300 mol%.

Next, microcapsules that can be used in the present invention will be described. Regarding the microcapsules, various known techniques can be applied without particular limitations. Examples include U.S. Pat. No. 2,800,457 and U.S. Pat.
No. 8, methods using coacervation of hydrophilic wall-forming materials described in each specification, specifications described in U.S. Patent No. 3,287,154 and British Patent No. 990,443, and Japanese Patent Publication No. 3
No. 8-19574, No. 42-446 and No. 42-7
Interfacial polymerization method described in Publication No. 71, US Patent No. 341825
No. 0 and No. 3,660,304 by precipitation of polymers described in each specification; a method using the isonicanate polyol wall material described in U.S. Pat. No. 3,796,669; Method used, US Pat. No. 4,001,140
No. 4,087,376, and No. 4,089,802 Methods using urea-formaldehyde-based or urea-formaldehyde resin runol-based wall forming materials described in the specifications: Melamine-formaldehyde resin, hydroquine, described in U.S. Pat. No. 4,025,455 Method using wall-forming materials such as propyl cellulose: Japanese Patent Publication No. 36-91
68 and JP-A No. 51-9079: in 5 situ method by polymerization of monomers described in each publication: British Patent No. 9
Examples include the polymerization dispersion cooling method described in US Pat. No. 27807 and No. 965074, and the spray drying method described in US Pat. No. 311.1407 and British Patent No. 930422. Although the method for microcapsulating oil droplets of a polymerizable compound is not limited to the above, a method in which a core material is emulsified and then a polymer film is formed as a microcapsule wall is particularly preferred. In addition,
A photosensitive material using microcapsules having an outer shell made of polyamide resin and/or polyester resin is described in JP-A-62-209437. Regarding photosensitive materials, see JP-A No. 62-20'9438, and about photosensitive materials using microcapsules having outer shells made of amino aldehyde resin, see JP-A No. 62-209439.
Regarding a photosensitive material using microcapsules having an outer shell made of ceratin, see JP-A-62-209440.
A photosensitive material using microcapsules having an outer shell made of Epoquine resin is described in JP-A-62-209441, and a photosensitive material using microcapsules having a composite resin outer shell containing polyamide resin and polyurea resin is specifically described JP-A No. 62-209447 describes a photosensitive material using microcapsules having a composite resin outer shell containing polyurethane resin and polyester resin.
Each of these is described in Japanese Patent No. 2-209442.

It is preferable that the silver halide be present in the wall material constituting the outer shell of the microcapsule. Regarding photosensitive materials containing silver halide in the wall material of microcapsules, JP-A No. 6
It is described in Japanese Patent No. 2-169147.

In addition, Japanese Patent Application No. 1-37782 discloses that in order to obtain capsules with particularly excellent wall density, a reaction product of a water-soluble polymer having a sulfinic acid group and a polymerizable compound having an ethylenically unsaturated group is used. A microcapsule is disclosed in which a polymer wall of a high molecular compound is provided around a membrane.
It is preferably used in the present invention.

Are there any particular restrictions on the support for the photosensitive material of the present invention?
It is preferable to use a material that can withstand the processing temperature during development.

Materials that can be used for the support include crow, paper, high quality paper, baryta, coated paper, cast coated paper,
Synthetic paper, metals and their analogs, polyester, polyethylene, polypropylene, acetylcellulose, cellulose ester, polyhinyl acetal, polystyrene,
Examples include films such as polycarbonate and polyethylene terephthalate polyimide, and papers laminated with resin materials and polymers such as polyethylene.

In addition, when using a porous support such as paper, JP-A-62-
No. 209529, No. 63-38934, No. 63-81
No. 339, No. 63-81340, No. 63-97941
Supports described in various publications such as No., No. 64-88543, and No. 64-88544 can be used.

Various image formation accelerators can be used in the photosensitive material. Image formation accelerators have the following functions: ■ Accelerating the movement of bases or base precursors, ■ Accelerating the reaction between reducing agents and silver salts, and ■ Accelerating the immobilization of dye-donating substances through polymerization. In terms of function, they are classified into the aforementioned bases or base precursor nucleophilic compounds, oils, heat solvents, surfactants, compounds that interact with silver or silver salts, and compounds that have an oxygen scavenging function. However, these substance groups generally have multiple functions and usually have some of the above-mentioned promoting effects. For details of these, see U.S. Pat.
It is described in publications such as No. 09443 and specifications.

The purpose of photosensitive materials is to initiate polymerization in a system that polymerizes polymerizable compounds in areas where latent silver halide images are not formed, or to polymerize unpolymerized polymerizable compounds after image transfer. A thermal or photopolymerization initiator can be used as the initiator.

Examples of thermal polymerization initiators include azo compounds, organic peroxides, inorganic peroxides, sulfinic acids, and the like. For details, please refer to “Iff polymerization between addition polymerization J” (1983
(Kyoritsu Shuppan), pages 6 to 18, etc.

Examples of photopolymerization initiators include hendephenones, acetophenones, hendiynes, thioxansones, and the like. For details on these, see “Ultraviolet curing system J (1989, General Technology Center), Vol.
It is described on pages 3 to 147, etc.

! Various hardeners can be used in the coating material A. Specifically, aldehyde hardeners, aziridine hardeners, Evoquin hardeners, vinyl sulfone hardeners, N-
Examples include methylol-based hardeners and high molecular hardeners. For details, see U.S. Pat. No. 4,678,739, 4141iI
No. 9-116655, No. 62-245261, No. 61
There are descriptions in various publications such as No. -18942 and No. 62-234157.

Various surfactants can be used in photosensitive materials for the purposes of coating aids, improving peelability, improving slipperiness, preventing electrification, promoting development, and the like. Specific examples of surfactants are given in JP-A-62-1
It is described in No. 73463, No. 62-183457, etc.

An antistatic agent can be used in the photosensitive material for the purpose of preventing static electricity. Research Disclosure Lff No. 17643 (No. 27, November 1978) as an antistatic agent.
page) etc.

A dye or pigment may be added to the photosensitive layer of the photosensitive material for the purpose of preventing halation or irradiation. JP-A-63-29748 describes a photosensitive material in which a white pigment is added to the photosensitive layer. be. The microcapsules may contain a pigment that has the property of being decolored by heating or light irradiation. The dye having the property of being decolored by heating or light irradiation can function as a yellow filter in conventional silver salt photography. A photosensitive material using a dye that has the property of being decolored by heating or light irradiation as described above is described in JP-A-63-97940.

The anti-smudge agent used in photosensitive materials is preferably a particulate material that is solid at room temperature.
Starch particles described in the specification of No. 232347, fine polymer powders described in the specification of US Pat. No. 3,625,736, etc., microcapsule particles containing no color former as described in the specification of British Patent No. 1,235,991, etc., and US Pat. No. 2,711,375. Examples include inorganic particles such as cellulose fine powder, cruzi, kaolin, hentonite, waxite, zinc oxide, titanium oxide, and alumina. The average particle size of the particles is preferably in the range of 3 to 50 μm, more preferably in the range of 5 to 40 μm in volume average diameter. It is more effective for the particles to be larger than microcapsules.

When a solvent for a polymerizable compound is used in a photosensitive material, it is preferable to encapsulate it in a microcapsule separate from the microcapsule containing the polymerizable compound. Regarding photosensitive materials using organic solvents that are miscible with polymerizable compounds encapsulated in microcapsules, Japanese Patent Application Laid-Open No. 62-2095
There is a description in Publication No. 24. A photosensitive material using a water-soluble vinyl polymer as described above, which may be used by adsorbing a water-soluble vinyl polymer to the silver halide grains mentioned above, is described in JP-A-63-91652.

Examples of optional components that can be included in the photosensitive layer in addition to those mentioned above and their usage are also found in the application specifications and Research Disclosure D V OI regarding the above-mentioned series of photosensitive materials.

No. 17029, June 1978 (pages 9-15).

Layers that can be optionally provided on the photosensitive material include an image-receiving layer, a heating layer, an antistatic layer, an anti-curl layer, a release layer,
Examples include a cover sheet or protective layer, a layer containing a base or a base precursor, a base barrier layer, an antihalation layer (colored layer), and the like.

Instead of using the image-receiving material described below as a method of using the photosensitive material, the above image-receiving layer may be provided on the photosensitive material and an image may be formed on this layer. The image-receiving layer provided on the photosensitive material can have the same structure as the image-receiving layer provided on the image-receiving material. Details of the image receiving layer will be described later.

Regarding photosensitive materials using a heating layer:
1-294434, and JP-A-62-210447 regarding photosensitive materials provided with a cover note or protective layer.
For photosensitive materials provided with a layer containing a base or base precursor, see JP-A No. 62-253140, and for photosensitive materials provided with a colored layer as an antihalation layer, see JP-A No. 63-101842. , respectively. Further, a photosensitive material provided with a base barrier layer is also described in the above-mentioned Japanese Patent Application Laid-Open No. 62-253140. Further examples of other auxiliary layers and their use B
H2 is also described in the application specifications related to the above-mentioned series of photosensitive materials.

For photosensitive materials, there are various processing temperatures and processing times during development.
Various development stoppers can be used for the purpose of always obtaining a constant image.

The development stopper referred to here is a compound that neutralizes the base immediately after proper development or reacts with the base to lower the base concentration in the film and stop development, or a compound that inhibits development by interacting with silver and silver salts. It is a compound that

Specifically, an acid precursor that releases acid upon heating;
Examples include electrophilic compounds that undergo a substitution reaction with coexisting bases when heated, nitrogen-containing heterocyclic compounds, mercapto compounds, and precursors thereof.

For more details, see JP-A No. 62-253159 (31) - (
32), Japanese Patent Application No. 1-72479, Japanese Patent Application No. 1-3471, etc.

In the present invention, an organic metal salt can also be used as an oxidizing agent together with photosensitive silver halide.

Among such organic metal salts, organic silver salts are particularly preferably used.

Organic compounds that can be used to form the above organic silver salt oxidizing agent include U.S. Pat.
There are henzotriazurs, fatty acids and other compounds described in columns 53 and the like. Furthermore, silver salts of carboxylic acids having an alkynyl group such as silver phenylpropiolate described in JP-A-60-113235, and JP-A-61-24904
Acetylene silver described in the publications No. 4 and No. 64-57256 is also useful. Two or more types of organic silver salts may be used in combination.

The above N-containing silver salts have the following properties per mole of photosensitive silver halide:
0.01 to 10 mol, preferably 0.01 to 1
Moles can be used together. Photosensitive silver halide is 0 in terms of silver (if it contains silver salt, add it to silver salt)
．． 1 to 10 g/bo is appropriate.

Various antifoggants or photographic stabilizers can be used in the present invention. An example is RD176
43 (1978), pages 24-25, nitrogen-containing carboxylic acids and phosphoric acids described in JP-A-59-1.68442, or mercapto-described in JP-A-59-111636. Compounds and metal salts thereof, acetylene compounds described in JP-A-62-87957, and the like are used.

The photosensitive material of the present invention is used to form an image according to the usage method described below, and a zero-order image receiving material, which is generally used as an image receiving material, will be described. The image-receiving material may include only a support, but generally an image-receiving layer may be provided on the support.

Supports for image-receiving materials include glass, paper, high quality paper, baryta paper, coated paper, cast coated paper, synthetic paper, metals and their analogues, polyester, polyethylene, polypropylene, acetyl cellulose, cellulose ester,
Films such as polyvinyl acecool, polystyrene, polycarbonate, and polyethylene terephthalate, as well as papers laminated with resin materials and polymers such as polyethylene, can be treated.

In addition, when a porous material such as paper is used as a support for the image-receiving material, it is preferable that the support has a certain level of smoothness as in the image-receiving material described in JP-A-61-209530. Further, an image receiving material using a transparent support is described in JP-A-62-209531.

The image-receiving layer of the image-receiving material is composed of a white pigment, a binder, and other additives, and it is thought that the white pigment itself or the voids between the particles of the white pigment receive the polymerizable compound.

Regarding white pigments used in the image-receiving layer, white pigments include, for example, oxides such as silicon oxide, titanium oxide, zinc oxide, magnesium oxide, aluminum oxide, magnesium sulfate, barium sulfate, aluminum sulfate, and magnesium carbonate. Funium, barium carbonate, calcium carbonate, calcium silicate, magnesium hydroxide, magfusium phosphate,
Other examples include alkaline earth metal salts such as magnesium hydrogen phosphate, aluminum silicate, aluminum hydroxide, zinc sulfide, various sugar clays, talc, kaolin, zeolite, acid clay, activated clay, and glass.

As organic white pigments, polyethylene, polystyrene,
Examples include benzoguanamine, resin, urea-formalin resin, melamine-formalin resin, polyamide resin, and the like. These white pigments may be used alone or in combination, but those with high oil absorption for polymerizable compounds are preferred.

Further, as the binder used in the image-receiving layer of the present invention, water-soluble polymers, polymer latexes, polymers soluble in organic solvents, and the like can be used. As a water-soluble polymer,
Examples include cellulose derivatives such as carboquine methylcellulose, hydroquine ethylcellulose, and methylcellulose, proteins such as gelatin, phthalated gelatin, casein, and ovalbumin, starches such as dextrin, and etherified starch, polyvinyl alcohol, polyvinyl alcohol partial acecool, and polyvinyl alcohol. N-vinylpyrrolidone,
Polyacrylic acid, polymethacrylic acid, polyacrylamide, polyvinylimidazole, polyvinyl alcohol,
Examples include synthetic polymers such as polystyrene sulfonic acid, locust bean gum, pullulan, gum arabic, and sodium alginate.

Examples of the polymer latex include styrene-butadiene copolymer latex, methyl methacrylate, butadiene copolymer latex, acrylic ester and/or
Alternatively, methacrylic acid ester polymers or copolymer latexes, ethylene/vinyl acetate copolymer latexes, etc. may be mentioned.

Examples of polymers soluble in organic solvents include polyester resins, polyurethane resins, polyvinyl chloride resins, polyacrylonitrile resins, and the like.

The above-mentioned binders can be used in combination of two or more types, and can also be used in combination in such a ratio that the two types of binders cause phase separation. An example of such a method of use is described in Japanese Patent Application No. 313483/1983.

The average particle size of the white pigment is 0.1~20μ, preferably 0.1~10μ, and the coating amount is 0゜1g~60g,
Preferably, it is in the range of 0.5g to 30g. The weight ratio of white pigment to binder is 1 part pigment to 0 part binder.
The range of O1 to 0.4 is preferable, and the range of 0.03 to 0.3 is more preferable.

In addition to the binder and white 11 inch, the image receiving layer can contain various additives as described below.

For example, when using a coloring system consisting of a coloring agent and a color developer, the color developer can be included in the image-receiving layer. Typical color developers include phenols, organic acids or their salts, or esters, but when a leuco dye is used as a color image forming substance, zinc salts of salicylic acid derivatives are preferred; Among them, 3゜5-di-α-
Zinc methylhensylsalicylate is preferred.

The above color developer is applied to the image-receiving layer at a concentration of 0. Preferably, the coating amount is in the range of 1 to 50 g/rrf.

More preferably, it is in the range of 0.5 to 20 g/n.

The image-receiving layer may contain a thermoplastic compound. When the image-receiving layer contains a thermoplastic compound, it is preferable that the image-receiving layer itself is constituted as an aggregate of thermoplastic compound fine particles. Image receiving layer configured as above:! It has the advantage that it is easy to form a transferred image, and that a glossy image can be obtained by heating after image formation. There are no particular restrictions on the thermoplastic compound mentioned above, and known plastic resins (
It can be arbitrarily selected from wax, wax, etc. However, the glass transition point of the thermoplastic resin and the melting point of the wax are preferably 200'C or less. Regarding the image-receiving material having an image-receiving layer containing thermoplastic compound fine particles as described above, Japanese Patent Laid-Open No. 62-28
There are descriptions in No. 0071 and Publication No. 62-280739.

The image-receiving layer may contain a photopolymerization initiator or a thermal polymerization initiator. In image formation using an image receiving material,
The pigment is transferred together with the unpolymerized polymerizable compound. Therefore, a photopolymerization initiator or a thermal polymerization initiator can be added to the image-receiving layer for the purpose of smoothly proceeding with the curing process (fixing process) of the unpolymerized polymerizable compound. In addition, regarding an image receiving material having an image receiving layer containing a photopolymerization initiator, Japanese Patent Application Laid-Open No. 1982
Japanese Unexamined Patent Publication No. 161149 describes an image receiving material having an image receiving layer containing a thermal polymerization initiator.

A dye or pigment can be included in the image-receiving layer for the purpose of adding characters, symbols, frames, etc. to the image-receiving layer, or for the purpose of making the background of an image a specific color. Further, a dye or a pigment may be included in the image-receiving layer for the purpose of making it easier to distinguish between the front and back sides of the image-receiving material. As the dye or pigment, various known substances including dyes or pigments that can be used in image formation can be used, but there is a risk that the dye or pigment may damage the image formed in the image-receiving layer. In some cases, it is preferable to lower the dyeing density of the dye or pigment (for example, make the reflection density 1 or less), or to use a dye or pigment that has the property of being decolored by heating or light irradiation. An image-receiving material having an image-receiving layer containing a dye or pigment that has the property of being decolored by heating or light irradiation is described in Japanese Patent Application Laid-Open No. 62-251741.

When the dye or pigment described above is contained in the image-receiving layer, it may be contained uniformly or unevenly distributed in a portion. For example, when the support is made of a light-transmitting material, a portion of the reflected image becomes a projected image due to the white pigment contained in the image-receiving layer. By doing so, image information that is unnecessary in the projected image can also be written as a reflected image in the image-receiving layer portion containing the white pigment.

The image-receiving layer may be configured as two or more layers depending on the functions described above. Further, the layer thickness of the image-receiving layer is 5 to 5
The range is preferably from IO to 200 μm.
More preferably, it is in the range of pm.

Note that a protective layer may be further provided on the image-receiving layer. Further, a layer made of aggregates of fine particles of a thermoplastic compound may be further provided on the image receiving layer, and for an image receiving material in which N made of aggregates of fine particles of a thermoplastic compound is further provided on the image receiving layer, there are special features. There is a description in JP-A-62-210460.

Furthermore, an adhesive or a layer containing an adhesive and a release paper may be sequentially laminated on the surface of the support opposite to the side on which the image-receiving layer is provided, the sticker-like image-receiving material having the above structure. Regarding Japanese Patent Application Laid-Open No. 63-24647 by the present applicant,
There is a description in the bulletin.

The method of using the photosensitive material will be described below.

The photosensitive material can be used simultaneously with imagewise exposure or after imagewise exposure.
Although various exposure means can be used as the above-mentioned exposure method used after development processing, a latent image of silver halide is generally obtained by imagewise exposure to radiation including visible light. The type of light source and amount of exposure
Sensitivity wavelength of silver halide (if dye sensitization is performed,
It can be selected depending on the sensitized wavelength) and sensitivity. Further, the original image may be a black and white image or a color image.

The photosensitive material is developed at the same time as the above-mentioned imagewise exposure or after the imagewise exposure.
Development processing using a developer described in Japanese Patent No. 49 or the like may be performed. As mentioned above, the method described in Japanese Patent Application Laid-Open No. 61-69062 which performs heat development treatment is a dry treatment, and therefore has the advantage of being simple to operate and capable of processing in a short time. Therefore, the development process for photosensitive materials is as follows:
The latter is especially good.

As the heating method in the above heat development treatment, various conventionally known methods can be used. In addition, like the photosensitive material described in JP-A No. 61-294434,
A heat generating layer may be provided on the photosensitive material and used as a heating means. Further, as in the image forming method described in JP-A-62-210461, heat development may be performed while suppressing the amount of oxygen present in the photosensitive layer. The heating temperature is generally 50°C to 200°C, preferably 60°C to 15°C.
It is 0'C. The heating time is generally 1 second or more, preferably 1 second to 5 minutes, and more preferably 1 second to 1 minute.

The photosensitive material can be thermally developed as described above to polymerize the polymerizable compound in the area where the silver halide latent image is formed or the area where the silver halide latent image is not formed.

In this way, by pressing the photosensitive material and the image-receiving material, which have obtained a polymer image on the photosensitive layer, in a superimposed state,
The unpolymerized polymerizable compound can be transferred to an image-receiving material to obtain a color image on the image-receiving material.

As the above-mentioned pressurizing method, a conventionally known method can be used.

For example, the photosensitive material and the image-receiving material may be sandwiched between press plates such as a presser, pressure may be applied while conveying using a pressure roller such as a nip roll, or the pressure may be applied intermittently using a dot impact device or the like.

Alternatively, highly pressurized air can be blown with an air gun or the like, or the pressure can be applied with an ultrasonic generator, a piezoelectric element, or the like.

Photosensitive materials include color photography and printing photosensitive materials, printing photosensitive materials, computer graphic hard copy photosensitive materials,
It has many uses, such as photosensitive materials for copying machines.

The present invention will be explained in more detail with reference to the following examples, but the present invention is not limited thereto.

Examples of the present invention and comparative examples will be described below.

Fruit 1'' (2F Gelatin aqueous solution (20 g of gelatin, 0.5 g of sodium chloride, and 10 μm of (AGS-1) were added to 1600 ad of water, adjusted to pH 4.0 with IN sulfuric acid, and kept at 50°C) Aqueous solution 2 containing 71 g of potassium bromide
00m and silver nitrate aqueous solution (nitric acid ia 100 in 200d of water
g (dissolved)) were simultaneously added at equal flow rates over 15 minutes.

1 minute after this addition was completed, exacerbation dye (SR1) 4
00■ and (SR-2) 800■ were added, and 100 d of an aqueous solution containing 3.65 g of potassium iodide was added at an equal flow rate over 5 minutes 15 minutes after the addition of the aggravating dye. This emulsion was sedimented, washed with water, desalted, and then 3.5 g of gelatin was added and dissolved, and the average particle size was 0.18.
Monodispersed tetradecahedral silver iodobromide emulsion (E
R-1) 460g was prepared.

(SR-1) (SR-2) (CI(2)4SO3 (AGS-1) (CHz) 3SO3HN (CzHs) s2H5 Halon EG-1 0.005M potassium bromide and 0.1M sodium chloride While stirring, add 30I1g of (AGS-1) to 1.22g of a 3.0% gelatin solution containing 6.
Add 150c of 0.3M silver nitrate solution to a reaction vessel kept at 0°C.
150 cc of a halogen salt aqueous solution containing c, 0.18 M potassium bromide, and 0.5 M sodium chloride was added over 5 minutes by the double agent method.

Nucleation was thereby performed by obtaining silver chlorobromide grains of 0.20 μm and a silver chloride content of 40 mol %. Subsequently, 600 cc of an aqueous solution containing 70 g of silver nitrate, 600 cc of an aqueous solution containing 29 g of potassium bromide, and 11 g of sodium chloride were simultaneously added in a double agent over 60 minutes at 60°C.

Furthermore, 410 g of sensitizing dye (SO-1) was added and stirred for about 10 minutes, then the emulsion was cooled to 35°C and washed with water by the usual flocculation method, and 6 g of gelatin was added to pH 6.2.
, after adjusting the pAg to 7.8, sodium thiosulfate, chloroauric acid, 4-hydroxy-6-methyl 1.3.3a, 7
- Optimally chemically sensitized by adding chitrazaindene. The particles were cubic silver chlorobromide particles with a diameter of 0.43 μm and a silver chloride content of 40 mol %.

(SG-1) Well-stirred gelatin aqueous fi (20 g of gelatin, 3 g of potassium bromide in 800 cc of water, and (AGS-
0.2 g of 1) was added and kept at 60° C.), and the following solutions (1) and (2) were added simultaneously over 60 minutes.

Thereafter, the following solutions (3) and (4) were simultaneously added over 20 minutes.

Further, after starting the addition of the liquid (3), the following dye solution was added over a period of 40 minutes from 5 minutes.

After washing with water and desalting, 5 g of lime-treated ossein gelatin was added to adjust the pH to 6.2 and PA, g to 8.5, and then sodium thiosulfate and 4-hydroxy-6 methyl-1.3
．． Optimal chemical sensitization was carried out by adding 3a,7-chitrazaindene and chloroauric acid. In this way, the average particle size, 0.
400 g of a 60 μm monodispersed tetradecahedral silver iodobromide emulsion was obtained.

Dye solution: (SB-1) 0.12g and (SB2
) 0.12 g dissolved in 200 cc of methanol (SI3-1) (SB-2) 3% aqueous solution of gelatin in a 300 d dispersion container 13
0 g, base precursor (BC-1) 70 g and 200 d of glass beads with a diameter of 0.5 to 0.75 ma+ were added, and dispersed for 30 minutes at 300 μm using a Dyno Mill to obtain a base with a particle size of 1.0 μm or less. Precursor (B G
-], , ) solid dispersion (KB-1) was obtained.

328 g of GC-polymerizable compound (MN-1) was mixed with 72 g of Microlith Blue 40A (trade name, manufactured by Ciba Geigy), and the mixture was heated at 5000 revolutions per minute using an Eiger motor mill (manufactured by Eiger Engineering). Stir for 1 hour,
A dispersion (C; C-1) was obtained.

Pigment dispersion of GM-IGY-1 (same as G(, -1), but instead of Microlith Blue 4GA, Microlith Red 177A (trade name, manufactured by Chiha Geigy) and Microlith Yellow 4GA (trade name, (manufactured by Chiha Geigy),
Pigment dispersion (C, 1vl-1) and (G”y”-1)
I got it.

Copolymer (1,
37g of (SV-1) 20% (wt%) solution of P-1)
was dissolved. To 51.6 g of this solution (RD-1,)
2.42g, (RD-2) 4.5g (FF-1)0
．． 001g, (FF-2) 0゜001g, (FF-3
)0. 001g, (FF4) 0.001g, (
FF-5) 0. 001. g (ST-1) was added to prepare an oily solution.

To this solution were added 4.2 g of silver halide emulsion (ER-1), 22 g of solid dispersion (KB-11, 8 mg of sodium thiosulfate, and 8 µm of chloroauric acid) and kept at 50 °C for 20 minutes. While keeping the temperature at 60°C, stir for 5 minutes at 15,000 revolutions per minute using a homogenizer.
10 emulsion photosensitive composition (PR-1) was obtained.

Polymerizable compound (MN-1) Kayarad R684 Nippon Kayaku Copolymer (IP-1) CHl +CH2-C÷, 3 COzCHzCH=CL L -←CHz-C+++ CO□H (SV CHff-CH-CH2OCH3 H (RD (RD (FF ■ (FF 2) (FF-3) H (FF-4) (FF-5) (ST ■) C+5lhtOH Microcapsule 10 g of a 15% aqueous solution of CR- polymer (2P-1) and polymer (2P '-2) A mixture of 130g of 7.1% aqueous solution
Adjusted to H5.0. Add the above photosensitive composition (
PR-1) was added thereto, and the mixture was stirred for 20 minutes at 60° C. and 5,000 revolutions per minute using a daysilver to obtain an emulsion in the form of a W10/W emulsion.

Separately, 20.0 g of a 37% formaldehyde aqueous solution and 76.3 g of distilled water were added to 14.8 g of melamine, heated to 60° C., and stirred for 30 minutes to obtain a transparent aqueous solution of melamine/formaldehyde initial condensate.

69.3 g of this initial condensate in water was added to the above W10/W emulsion, and the pH was adjusted to 5.0 using a 10% aqueous solution of sulfuric acid. Next, this was heated to 60℃ for 30 minutes.
and further stirred for 60 minutes. 12 more urea
g was added, the pH was adjusted to 3.5 using a 10% aqueous solution of sulfuric acid, and the pH was adjusted to 6.5 using a 10% aqueous solution of sodium hydroxide.
A photosensitive microcapsule dispersion (CR-1) having a capsule wall made of formaldehyde resin was prepared.

Polymer (2P-1) Potassium polyvinylbenzenesulfinate polymer (2
P-2) -90 (Wako Pure Chemical Industries Ltd.) PC, -I Same as the photosensitive composition of PB-1 (PR-1,), but as a silver halide emulsion, each (EC -1) (EB-1) was used, and a photosensitive composition (PC-1) was prepared in the same manner except that sodium periosulfate and chloroauric acid were not added.
(PB-1) was obtained.

Same as the photosensitive microcapsule dispersion (CR-1), except that the photosensitive composition (PC; -1), (PB~1)
) using photosensitive microcapsule dispersion (CG-1)
(CB-1) was prepared.

Photosensitive microcapsule dispersion (CR-1) (CG-1
) (CB-1) (300 g each) - After leaving to stand naturally day and night to allow most of the microcapsules to settle, the upper 210 g of liquid was removed by decantation.
Add 0g of water to make a photosensitive microcapsule dispersion (CC
R-I) (CCG-1) (CCB-1) was prepared.

TF-'s.

Photosensitive microcapsule dispersion (CCR-1) 53g,
(CCB-1) 53g, (CCC;-1) 53g, polyvinyl alcohol (product name PVA205 manufactured by Kuraray ■) 5g, Emmalex NP-8 (made by Nippon Emulsion W) Ig, (KK-1) 0.3g and distilled A coating liquid (TF-1) was prepared by adding 30 cc of water and stirring thoroughly.

(KK-1) CHzCOOCHzCH (CJs) (:aHwNaOf
fS CHCOOC)IzCH(CJs)Ca)LF
Coating solution F-~0 (TF-1) was applied by extrusion method, dried under the conditions shown in Table 1, rolled up, placed in a warm storage, and
4.The materials were moistened and sealed in moisture-proof bags laminated with aluminum to prepare photosensitive materials FF-1 to FF-10. After winding up and until humidity control, the film was stored at 25°C and 60% unless it was placed in a heated refrigerator. After storing these photosensitive materials at room temperature for two months, they were exposed to light using a halogen lamp whose color temperature was adjusted to 3100K and through a filter with a transmission density of O to 4.0 that was continuously changed under an exposure condition of 200001 ux for 1 second. 1 in a drum type heat developing machine heated to 135°C.
The light-sensitive material was heat-developed for 0 seconds and then layered with an image-receiving material (R5-1) to be described later, and in that state was passed through a pressure roller of 1300 kg/cj at a speed of 2 CI/sec. The image-receiving material was then peeled off from the photosensitive material to obtain a positive image on the image-receiving material. The density of the obtained image was measured.

[Preparation of image-receiving material (R3-1)] Calcium carbonate (Callite SA, manufactured by Shiroishi Central Research Institute)
80.0g, surfactant (Boys 520, manufactured by Kao ■) 1
．． 9 g and 118.1 g of water were mixed and dispersed for 10 minutes at 2000 revolutions per minute using a Polytron disperser (PT 10/35 model, manufactured by Kinematica). This dispersion liquid 52
g, 4 g of a 10% aqueous solution of surfactant (a), and 10 polyvinyl alcohol (PVA-117, ■ manufactured by Kuraray)
% aqueous solution and further add water to bring the total amount to 1.
A coating solution for forming an image-receiving layer was prepared using 30 g.

This coating solution was applied to a paper support (JIS-P
A paper support using atoms having a fiber length distribution defined by -8207 such that the sum of the weight percent of the 24 mesh residue and the weight percent of the 42 mesh residue is 30 to 60%. Refer to Japanese Patent Application Laid-open No. 63-186239.
An image receiving material (RS-1) was prepared by drying at 0°C.

In addition, in order to observe the change in performance over a two-month period, a photosensitive material that had been stored in the freezer for two months was also subjected to the same development process.
Based on the performance of this photographic material stored frozen, changes in performance of the photographic material stored at room temperature for two months were evaluated. Changes in performance were evaluated by looking at the decrease in density at a sensitivity point of 0.8 in the transferred image of the photosensitive material frozen at -10°C. The results are shown in Table 2.

Table 2 Drying, winding temperature control, and heating of the present invention! All of the photosensitive materials that were stored under the storage conditions and packaged in containers showed little change in performance over two months at room temperature.

Claims (3)

[Claims] (1) In a photosensitive material having on a support a photosensitive layer containing microcapsules containing silver halide, a reducing agent, a polymerizable compound, a color image forming substance, and a base or base precursor, after coating the photosensitive layer, the coating is applied. The water contained in the layer is 60% of the weight of the hydrophilic colloid contained in the coating layer.
% under a wet bulb temperature of 1-50°C, then drying under a dry bulb temperature of 1-50°C, and then at a temperature of 10-35°C and a relative humidity of 40-75%. A photosensitive material characterized in that it is manufactured by winding after conditioning the humidity in an atmosphere for 5 seconds or more. (2) Within 7 days after winding, the ambient temperature is 35°C or higher and 55°C.
2. The photosensitive material according to claim 1, which has been stored at temperatures below 0.degree. C. for 5 hours or more. (3) The photosensitive material according to claim (1) or (2), wherein the photosensitive material is sealed in a moisture-proof container at a relative humidity of 30% to 70%.