JPH08314143A - Plate making method using heat-developable silver complex salt diffusion transfer method - Google Patents

Abstract

PURPOSE: To provide a method for easily and rapidly forming a planographic printing plate. CONSTITUTION: This method for forming the planographic printing plate comprises forming the planographic printing plate in the following manner: After imagewise exposure or simultaneously with the imagewise exposure of a silver halide photosensitive material contg. at least a photosensitive silver halide, binder and basic metal compd. hardly soluble in water on a base and an image receiving material contg. a complex forming compd. for metal ions constituting the basic metal compd. and silver halide solvent and coated and provided with a physical development nucleus layer on its outside surface are heated by superposing their film surfaces on each other in the presence of a reducing agent and water and thereafter, both materials are peeled, by which the silver image by the silver complex salt diffusion method is formed on the physical development nucleus layer. This silver image is utilized as an ink receptive part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for making a lithographic printing plate by a silver complex salt diffusion transfer method, and more particularly to a method for making a lithographic printing plate using simple and rapid thermal development.
The present invention also relates to a method of making a lithographic printing plate having improved printing durability.

[0002]

2. Description of the Related Art A printing plate is known in which a metal silver image formed by applying a silver complex salt diffusion transfer method (DTR method) is used as an ink receiving property. For example, Japanese Patent Publication Sho-48-167
No. 25, No. 48-30562, No. 48-29723.
No. 52-150105 and 53-21602.
No. 56-8145, No. 57-211148, and U.S. Pat. Nos. 3,220,837 and 3,721,559.
No. 3,490,905 and the like. However, the methods described in these documents are not necessarily easy to handle because they use an unstable developing solution and require a long developing time, and improvements are desired. Further, as described in JP-A-57-212148, etc., D
Also in the planographic printing plate to which TR is applied, it is required to improve the printing durability like the other planographic printing plates. DT
The printing durability of the silver image obtained by the R method depends on the production conditions of the transferred silver particles (stability constant of silver complex salt, diffusion rate, reduction rate, coexisting substance, etc.), that is, the developed silver particles obtained thereby. It is known to be greatly affected by the size, shape and surface condition of the. Therefore, it has been desired to provide a lithographic printing material having a simple and rapid method and excellent printing durability, and a method for producing the same.

[0003]

SUMMARY OF THE INVENTION Therefore, a first object of the present invention is to provide a method for forming a lithographic printing plate easily and quickly without using a developing solution. A second object of the present invention is to provide a lithographic printing material having excellent printing durability and a method for producing the same.

[0004]

The above-mentioned object is to carry out, after imagewise exposure, a silver halide light-sensitive material containing on a support at least a light-sensitive silver halide, a binder and a basic metal compound which is poorly soluble in water. Alternatively, at the same time as imagewise exposure, an image receiving material containing a complex forming compound for a metal ion constituting the basic metal compound and a silver halide solvent, and a physical development nucleus layer coated on the outer surface thereof, a reducing agent, and After overlapping the film surfaces in the presence of water and heating, both materials are peeled off to form a silver image on the physical development nucleus layer by the silver complex salt diffusion transfer method, and the silver image is used as an ink receiving part. It was achieved by a method of preparing a lithographic printing plate characterized by:

The present invention will be described in detail below. In the present invention, the water-insoluble basic metal compound used in the light-sensitive material and the complex forming compound with respect to the metal ion constituting the basic metal compound used in the image receiving material are used as a base precursor. That is, they both release a base as a result of a complexing reaction in the presence of water. Regarding the combination of the sparingly soluble basic metal compound and the complex-forming compound, JP-A-62-129848, European Patent Publication 210,660A2, and US Pat.
No. 0,445 and the like.

Preferred sparingly soluble basic metal compounds are zinc or aluminum oxides, hydroxides and basic carbonates, particularly preferably zinc oxide, zinc hydroxide and basic zinc carbonate. The sparingly soluble basic metal compound is used by dispersing fine particles in a hydrophilic binder as described in JP-A-59-174830. The average particle size of the fine particles is 0.001 to 5 μm, preferably 0.01
~ 2 μm. The content in the photosensitive material is 0.01 g /
m ^{2 to 5} g / m ² , preferably 0.05 to ² g
/ M ² .

The complex-forming compound used in the image-receiving material of the present invention is known as a chelating agent in analytical chemistry and a water softening agent in photographic chemistry. The details are described in A. It is also described in "Complex Reaction" (Sangyo Tosho) by Ringbom, translated by Nobuyuki Tanaka and Haruko Sugi. The complex forming compound preferred in the present invention is a water-soluble compound, and examples thereof include aminopolycarboxylic acids (including salts) such as ethylenediaminetetraacetic acid, nitrilotriacetic acid, and diethylenetriaminepentaacetic acid, aminotris (methylenephosphonic acid), ethylenediamine. Aminophosphonic acid (salt) such as tetramethylenephosphonic acid, 2-picolinic acid, pyridine-
Examples thereof include pyridinecarboxylic acid (salt) such as 2,6-dicarboxylic acid and 5-ethyl-2-picolinic acid. Among these, pyridinecarboxylic acid (salt) is particularly preferable.

In the present invention, the complex-forming compound is preferably used as a salt neutralized with a base. Particularly, salts with guanidines, amidines, organic bases such as tetraalkylammonium hydroxide and salts with alkali metals such as sodium, potassium and lithium are preferable. Specific examples of preferable complex-forming compounds are described in JP-A-62-129848.
And European Patent Publication 210,660A2. The content of the complex-forming compound in the image receiving material is 0.01.
10 to 10 g / m ² , preferably 0.05 to 5 g / m ^2.
m ² .

In the present invention, physical development nuclei are contained in the outer surface layer of the image receiving material, and the physical development nuclei reduce the soluble silver salt diffused from the light-sensitive material to convert it to physical development silver and fix it. Is. Physical development nuclei include zinc, mercury, lead, cadmium, iron, chromium, nickel, tin, cobalt, heavy metals such as copper, or palladium, platinum,
Any known physical development nuclei such as noble metals such as silver and gold or colloidal particles of chalcogen compounds such as sulfur, selenium and tellurium can be used. These physical development nuclei substances are prepared by reducing the corresponding metal ions with a reducing agent such as ascorbic acid or sodium borohydride to form a metal colloid dispersion, or by dissolving soluble sulfide, selenide or telluride solutions. It is obtained by mixing to form a colloidal dispersion of water-insoluble metal sulfide, metal selenide or metal telluride. These dispersions are preferably formed in a hydrophilic binder such as gelatin. The method for preparing colloidal silver particles is described in US Pat. No. 2,688,601.
If necessary, a desalting method for removing excess salt, which is known in the silver halide emulsion preparation method, may be carried out. The size of the physical development nuclei is preferably 0.0005 to 0.5 μm, particularly preferably 0.001 to 0.1 μm. These physical development nuclei are usually contained in an amount of 10 ^{−3 to} 100 mg / m ² , preferably 10 ^{−2 to} 10 mg / m ² . Physical development nuclei are
Although it can be prepared separately and added to the coating solution, for example, it may be prepared by reacting silver nitrate with sodium sulfide or gold chloride with a reducing agent in a coating solution containing a hydrophilic binder. . Physical development nuclei include silver, silver sulfide,
Palladium sulfide and the like are preferably used.

Although various hydrophilic polymers described below can be used as the binder of the physical development nucleus layer, the amount thereof is preferably as small as possible in order to expose the transferred silver image on the surface as much as possible. It is 100% by weight or less, preferably 50% by weight or less, relative to the development nuclei. The thickness of the physical development nucleus layer is preferably about 1 μm or less, particularly preferably 0.5 μm or less. The physical development nucleus layer may not necessarily have a binder, and in this case, it can be provided on the emulsion layer by a vacuum vapor deposition method, a cathode sputtering method, or the like.

Known silver halide solvents can be used in the image-receiving material of the present invention. For example, thiosulfates such as sodium thiosulfate and ammonium thiosulfate, sulfites such as sodium sulfite, JP-B-47-1.
Organic thioether compounds such as 1,8-dihydroxy-3,6-dithiaoctane, 2,2-thiodiethanol and 6,9-dioxa-3,12-dithiatetradecane-1,14-diol described in 1386, Japanese Patent Application No. Flat 6-325
Compounds having a 5- or 6-membered imide ring, such as uracil and hydantoin described in JP-A-350-350;
Compounds of the following general formula described in No. 19 can be used. In ^{N (R 1) (R 2} ) -C (= S) -X-R 3 formula, X represents a sulfur atom or an oxygen atom. R ¹ and R ² may be the same or different and each represents an aliphatic group, an aryl group, a heterocyclic group or an amino group.
R ³ represents an aliphatic group or an aryl group. R ¹ and R ²
Alternatively, R ² and R ³ may combine with each other to form a 5- or 6-membered heterocycle. In the present invention, among the above compounds, compounds having a 5- or 6-membered imide ring such as uracil and hydantoin are particularly preferable.

The content of the silver halide solvent in the image receiving material is 0.01-5 g / m ² , preferably 0.05-
It is 2.5 g / m ² . The molar ratio is 1/20 to 20 times, and preferably 1/1, the amount of silver coated on the light-sensitive material.
It is 0 to 10 times. The silver halide solvent may be dissolved in a solvent such as water, methanol, ethanol, acetone, DMF or an alkaline aqueous solution and added to the coating solution,
Solid fine particles may be dispersed and added to the coating solution.

In the present invention, Japanese Patent Application No. Hei 6-32535.
A polymer having a repeating unit of vinyl imidazole and / or vinyl pyrrolidone described in No. 0 as a constituent can be contained in the image receiving material.

The light-sensitive material used in the present invention basically has a light-sensitive silver halide, a hydrophilic binder, and a water-insoluble basic metal compound on a support, and further, if necessary, is reduced. Agents, organic metal salt oxidizing agents, antihalation dyes and pigments, and the like can be included. These components are often added to the same layer,
It is also possible to divide and add to another layer. Although the reducing agent is preferably incorporated in the light-sensitive material, it may be supplied from the outside by, for example, a method of diffusing it from the image-receiving material. The silver halide emulsion light-sensitive layer may be divided into two or more layers, if necessary.

In the light-sensitive material, various non-light-sensitive layers such as a protective layer, an undercoat layer, an intermediate layer, a filter layer and an antihalation layer are provided between and above and below the silver halide emulsion layers. It is also possible to provide various auxiliary layers such as a back layer on the opposite side of the support. Specifically, an undercoat layer as described in US Pat. No. 5,051,335, JP-A-1-120,553, and JP-A-5-34,88.
No. 4 and No. 2-64,634 and a reducing agent or DI
Intermediate layer with R compound, US Pat. No. 5,017,45
4, No. 5,139,919, JP-A-2-235,0.
An intermediate layer having an electron transfer agent as described in JP-A-44, a protective layer having a reducing agent as described in JP-A-4-249,245, or a layer combining these may be provided. When the support is polyethylene laminated paper containing a white pigment such as titanium oxide, the back layer preferably has an antistatic function and a surface resistivity of 10 ¹² Ω · cm or less. The binder of the back layer is not only hydrophilic one such as gelatin but also Japanese Patent Application No. 6-1
The polymers described in 77183 and the like can be used.

The photosensitive silver halide usable in the present invention is preferably silver chloride, silver iodochloride, silver chlorobromide or silver iodochlorobromide. In particular, the silver chloride content is preferably 80 mol% or more. Further, the silver chloride content is 90 mol% or more. The silver iodide content is preferably 2 mol% or less, more preferably 1 mol% or less, further preferably 0.5 mol% or less. The silver halide used in the present invention may be either a surface latent image type or an internal latent image type. The internal latent image type emulsion is used as a direct reversal emulsion in combination with a nucleating agent or an optical fogging. Further, it may be a multi-structured grain having different halogen compositions inside the grain and on the grain surface. Further, silver halide emulsions having different compositions may be joined by epitaxial joining. In particular, in the high silver chloride emulsion used in the present invention, a structure having a silver bromide localized phase in the inside and / or on the surface of the silver halide as described above is also used. it can.
The halogen composition of the localized phase preferably has a silver bromide content of at least 20 mol%, and more preferably more than 30 mol%. The silver bromide content of the silver bromide localized phase is analyzed by an X-ray diffraction method or the like. For example, C.R.Berry, S.J.Marino (CR Berry, S.J.M.
ario) Photographic Science and Technology (Photographic Science)
No. and Technology, vol. 2, p. 149 (1955) and vol. 4, p. The silver bromide localized phase is formed inside the grain, on the edge of the grain, at the corner,
Alternatively, it can be on the surface, but a preferable example thereof is one that is epitaxially bonded to the corner portion of the particle.

The shape of the silver halide grains is a normal crystal not containing twin planes, a single twin containing one twin plane, a parallel multiple twin containing two or more parallel twin planes, and a non-parallel twin. It can be used according to the purpose from non-parallel multi-twin crystals having two or more crystal planes, spheres, potatoes, flat plates having a high aspect ratio, and composite systems thereof. Regarding the shape of twinned grains, edited by The Photographic Society of Japan, Fundamentals of Photographic Industry-Silver Salt Photograph (Corona Publishing Co., Ltd.)
It is described on page 3. In the case of a normal crystal, cubic grains having (100) faces, octahedrons having (111) faces, or dodecahedron grains having (110) faces can be used. For dodecahedron grains, Japanese Examined Patent Publication No. 55-4273
No. 7 and JP-A No. 60-222842. Furthermore, it is reported in Journal of Imaging Science, Vol. 30, page 247 (1986). (Hll) plane, (hh
Particles of (l) plane, (hk0) plane and (hkl) plane can also be used according to the purpose. A tetrahedron having (111) faces and (100) faces and a grain having (111) faces and (110) faces can also be used. If necessary, polyhedral grains such as 38-faced, rhomboidal 24-faced, 46-faced, and 68-faced grains can also be used. A flat plate having a high aspect ratio can also be preferably used. Tabular grains of high silver chloride emulsion grains having (111) planes are disclosed in U.S. Pat. Nos. 4,399,215 and 4,400,473.
No. 5,217,858, JP-A-2-32, etc., tabular grains of high silver chloride emulsion grains having a (100) plane are disclosed in U.S. Pat. Nos. 4,946,772 and 5,275,93.
No. 0, 5264337, Japanese Patent Application No. 4-214109
Japanese Patent Application No. 5-96250, European Patent 0534395.
It is described in A1 and the like. Such a tabular grain having a high aspect ratio has a large surface area as compared with a normal crystal having the same volume, and therefore the adsorption amount of the sensitizing dye can be increased, which is advantageous in terms of color sensitization sensitivity. Since it has a large specific surface area, it has the advantage of high development activity.

The average grain size of silver halide grains is 0.05 μm.
Any size may be used, from fine particles of m or less to large-sized particles having a projected area diameter of more than 10 μm. The thickness is preferably 0.1 to 2 μm, particularly preferably 0.1 to 0.9 μm. The grain size distribution is, for example, ± 30% of the average grain size based on the number or weight of grains of the silver halide emulsion.
A monodisperse emulsion having a grain size distribution within which 80% or more of all grains fall may be used, or a polydisperse emulsion having a wide grain size distribution may be used. Preferably,
A monodisperse emulsion is used. In addition, JP-A-1-16774
No. 3 and No. 4-2233463, two or more kinds of monodisperse silver halide emulsions having substantially the same color sensitivity and different grain sizes may be used together for the purpose of adjusting gradation. Good. Two or more emulsions may be mixed in the same layer or may be formed in different layers. It is also possible to use two or more kinds of polydisperse silver halide emulsions or a combination of monodisperse emulsions and polydisperse emulsions. Further, two or more kinds of monodisperse silver halide emulsions having different heavy metal contents described later may be used in combination, or two or more kinds of monodisperse silver halide emulsions having different chemical ripening may be used in combination.

In the process of preparing the silver halide emulsion in the present invention, it is preferable to carry out a desalting step for removing excess salt. A Nudel water washing method performed by gelling gelatin may be used, and inorganic salts composed of polyvalent anions (for example, sodium sulfate), anionic surfactants, anionic polymers (for example, sodium polystyrene sulfonate), Gelatin derivative (aliphatic acylated gelatin,
A precipitation method (flocculation) using aromatic acylated gelatin, aromatic carbamoylated gelatin, etc. may be used. Alternatively, U.S. Pat. No. 4,758,505, JP-A-62-113137, and JP-B-59-43727.
U.S. Pat. No. 4,334,012 may be used, or a natural sedimentation method or a centrifugal separation method may be used. Usually, the sedimentation method is preferably used.

A method for preparing a silver halide emulsion is described in "Graphics and Chemistry" by Graphide, published by Paul Montel (P.Gl.
afkides, Chimie et Physique Photographique Paul Mo
ntel, 1967) "Photoemulsion Chemistry" by Duffin, published by Focal Press (GF Duffin, Photographic Emulsio
n Chemistry (Focal Press, 1966), "Production and coating of photographic emulsions" by Zelikmann et al., published by Focal Press.
(VL Zelikman et al. Making and Coating Photogra
phic Emulsion. Focal Press, 1964). The preparation method may be any of the acidic method, the neutral method and the ammonia method. As a method of reacting the soluble silver salt and the soluble halogen salt, a one-sided mixing method, a simultaneous mixing method, or a combination thereof can be used. It is also possible to use a method of forming grains in the state of excess silver ions (so-called reverse mixing method). As one form of the simultaneous mixing method, a method of keeping pAg constant in a liquid layer in which silver halide is formed,
That is, a so-called controlled double jet method can be used. According to this method, a silver halide emulsion having a regular crystal system and a substantially uniform grain size can be obtained.

In the preparation of silver halide emulsion, it is preferable to adjust pAg and pH during grain formation. pAg
For adjusting pH and pH, see Photographic Science and Engineering.
and Engineering) Volume 6, 159-165 (196
2); Journal of Photographic Science, Volume 12, 24
2 to 251 (1964), U.S. Pat. No. 3,655,394 and British Patent No. 1413748.

By using a silver halide solvent during the formation of silver halide grains, a silver halide emulsion having a higher degree of monodispersity can be produced. An example of a silver halide solvent is thiocyanate (US Pat. No. 2,222,264).
Nos. 2,448,534 and 3,332,0069) and thioether compounds (US Pat. No. 327115).
No. 7, No. 3574628, No. 3704130, No. 4297439, No. 4276347, and thion compounds (JP-A Nos. 53-144319, 53-82408 and 55-77737). ) And imidazole compounds (JP-A-54-100)
No. 717), benzimidazole (Japanese Patent Publication No. 60-5)
4662), and amine compounds (JP-A-54-1).
No. 00717). In addition,
Ammonia can also be used in combination with the silver halide solvent as long as it does not have any adverse effect. JP-B-46-7781, JP-A-60-222842, JP-A-60-122935
Nitrogen-containing compounds as described in U.S. Pat. Details of specific examples of the silver halide solvent are described on pages 12 to 18 of JP-A No. 62-215272.

In the process of grain formation or physical ripening of silver halide, a metal salt (including complex salt) may also be present. Examples of the metal salt include salts or complex salts of noble metals or heavy metals such as iridium, rhodium, ruthenium, chromium, cadmium, zinc, lead, thallium, platinum, palladium, osmium and rhenium. Among these, salts or complex salts of iridium, rhodium, ruthenium and chromium are preferable. These compounds may be used alone or in combination of two or more. The addition amount is 10 ⁻⁹ to 10 per mol of silver halide.
^It is about ^-3 mol, particularly preferably 10 ^{-9 to} 5 × 10 ^-6 mol. As the complex ion and the coordination compound, bromine ion, chlorine ion, cyanide ion, nitrosyl ion, thionitrosyl ion, water, ammonia and the like and combinations thereof are preferably used. For example, yellow blood salt, K
₂ IrCl ₆ , K ₃ IrCl ₆ , (NH ₄ ) ₂ RhCl
₅ (H ₂ 0), K ₂ RuCl ₅ (NO), K ₃ Cr (C
N) _{6 and the} like are preferably used. Further, the position to be incorporated in the silver halide grain may be uniform within the grain, or may be a localized position on the surface or inside of the grain, a silver bromide localized phase or a high silver chloride grain base. The method of adding these compounds is
The metal salt solution is mixed with an aqueous halide solution during grain formation, silver halide emulsion fine grains doped with the metal ions are added, or the metal salt solution is directly added during grain formation and after grain formation. It can be done by doing.
In order to increase the sensitivity and concentration of high-intensity exposure, metal complex salts such as iridium and yellow blood salt having cyanide as a ligand, lead chloride, cadmium chloride, and zinc chloride can be preferably used. When spectrally sensitizing in the red or infrared region,
It is preferable to use a metal complex salt having a cyanide ion as a ligand such as yellow blood salt, lead chloride, cadmium chloride, or zinc chloride. Iridium salt, rhodium salt,
Ruthenium salts and chromium salts are preferably used. Further, a rhodium salt may be added in an amount of 10 ⁻⁵ to 10 ⁻² mol / silver 1 mol for the purpose of providing light-sensitive handleability to the light-sensitive material.

When the silver halide grains are formed, the addition rate, addition amount or concentration of the silver salt solution (eg AgNO ₃ aqueous solution) and the halogen compound solution (eg KBr aqueous solution) to be added are increased to accelerate the grain formation rate. Good. Thus, the method of rapidly forming silver halide grains is
British Patent No. 1335925, United States Patent No. 3672900
No. 3,650,757, No. 4,242,445, JP-A Nos. 55-142329 and 55-15812.
No. 4, No. 58-113927, No. 58-113928.
No. 58-111934 and No. 58-111936.

During or after grain formation, the surface of the silver halide grain may be replaced with a halogen which forms a hardly soluble silver halide grain (halogen conversion). This halogen conversion process is described in "Die Grundlagen der Photographische".
n Prozesse mit Silverhalogeniden) pp. 662-669 and "The Theory of Photographic Process" 4th Edition 9
7 to 98, etc. In this method, the solution may be added in the form of a soluble halide solution or in the form of fine grain silver halide.

The silver halide emulsion of the present invention can be used without being chemically sensitized, but it is usually used after being chemically sensitized. The chemical sensitization method used in the present invention includes a sulfur sensitization method,
Chalcogen sensitization methods such as selenium sensitization and tellurium sensitization,
A noble metal sensitization method and a reduction sensitization method using gold, platinum, palladium or the like can be used alone or in combination (for example, JP-A-3-110555 and Japanese Patent Application No. 4-75).
798). These chemical sensitizations can be carried out in the presence of a nitrogen-containing heterocyclic compound (JP-A-62-2531).
59). Further, an antifoggant described below can be added after the completion of chemical sensitization. Specifically, JP-A-5-4
The methods described in JP-A No. 5833 and JP-A No. 62-40446 can be used.

An unstable sulfur compound is used as the sulfur sensitizer, and specifically, thiosulfates (eg, hypo), thioureas (eg, diphenylthiourea, triethylthiourea, allylthiourea, etc.). Well-known sulfur compounds such as allyl isothiocyanate, cystine, p-toluenethiosulfonate, rhodanines, and mercaptos may be used. The sulfur sensitizer may be added in an amount sufficient to effectively increase the sensitivity of the emulsion, and an appropriate amount is pH,
It varies depending on various conditions such as temperature, compatibility with other sensitizers, size of silver halide grains, etc., but as a guide, it is used in the range of 10 ^-9 to 10 ^-1 mol per mol of silver halide. Is preferred.

In the selenium sensitization, a known unstable selenium compound is used. Specifically, colloidal metal selenium, selenoureas (eg, N, N-dimethylselenourea, N, N-diethylselenourea, etc.) are used. ), Selenoketones, selenoamides, aliphatic isoselenocyanates (for example, allyl isoselenocyanate, etc.), selenocarboxylic acids and esters, selenophosates, diethyl selenides, diethyl selenides and other selenides. Can be used. The addition amount varies depending on various conditions like the sulfur sensitizer, but as a guide, it is preferable to use it in the range of 10 ^-10 to 10 ^-1 mol per mol of silver halide.

In the present invention, in addition to the chalcogen sensitization described above, sensitization with a noble metal can be performed. First, in gold sensitization, the valence of gold may be +1 or +3,
Various gold compounds are used. As typical examples, chloroauric acid, potassium chloroaurate, auric trichloride, potassium aurithiocyanate, potassium iodoaurate, tetraoric acid, ammonium aurothiacyanate, pyridyl trichlorogold,
Examples include gold sulfide, gold selenide, gold telluride, and the like. The addition amount of the gold sensitizer varies depending on various conditions, but as a guide, it is preferable to use it in the range of 10 ^-10 to 10 ^-1 mol per mol of silver halide. The gold sensitizer may be added at the same time as sulfur sensitization or selenium sensitization or tellurium sensitization, during or before the sulfur, selenium or tellurium sensitization step, or after the gold sensitizer alone. It is also possible to use. The pAg and pH of the emulsion to be sulfur-sensitized, selenium-sensitized or tellurium-sensitized or gold-sensitized in the present invention are not particularly limited, but it is preferable to use pAg in the range of 5-11 and pH in the range of 3-10. . Further, preferably, pAg is in the range of 6.8 to 9.0 and pH is in the range of 5.5 to 8.5.
Noble metals other than gold can be used as the chemical sensitizer in the present invention. As the noble metal other than gold, for example, a sensitizer using a metal salt such as platinum, palladium, iridium or rhodium or a complex salt thereof can be used.

In the present invention, reduction sensitization can be further carried out. As the reduction sensitizer used in the present invention, ascorbic acid, stannous salt, amines and polyamines,
Hydrazine derivatives, formamidinesulfinic acid, silane compounds, borane compounds and the like are known. In the present invention,
One of these known compounds can be selected and used,
Two or more compounds can be used in combination. As the reduction sensitizer, stannous chloride, thiourea dioxide, dimethylamine borane, L-ascorbic acid and aminoiminomethanesulfinic acid are preferable compounds. Since the addition amount of the reduction sensitizer depends on the emulsion conditions, it is necessary to select the addition amount, but the range of 10 ^-9 to 10 ^-2 mol per mol of silver halide is suitable. In addition to the method of adding the above-mentioned reduction sensitizer, growth or aging in a low pAg atmosphere of pAg1 to 7 called silver ripening, growth in a high pH atmosphere of pH 8 to 11 called high pH ripening, Alternatively, a method of aging, a method of passing hydrogen gas or a method of reduction sensitization by hydrogen in the nascent stage by electrolysis can be selected. Furthermore, two or more methods can be used together. This reduction sensitization can be used alone,
It can also be used in combination with the above chalcogen sensitization or precious metal sensitization.

In the present invention, the amount of silver halide emulsion used in the light-sensitive material is 0.5 to 2.
Preferably ^{5g / m 2, 0.8~2.0g / m} 2 is particularly preferred.

Gelatin is preferably used as the protective colloid used in preparing the emulsion, but other hydrophilic binders can also be used. The hydrophilic binder can be used alone or in combination with gelatin. Examples of hydrophilic binders include gelatin derivatives, graft polymers of gelatin and other polymers, proteins such as albumin and casein, and cellulose derivatives such as hydroxyethyl cellulose and cellulose sulfates.
Sodium alginate, starch derivative, polysaccharide, carrageenan, polyvinyl alcohol, modified alkyl polyvinyl alcohol, polyvinyl-N-pyrrolidone, polyacrylic acid, polymethacrylic acid, polyacrylamide, polyvinyl imidazole, polyvinyl pyrazole, etc. Synthetic hydrophilic polymer such as US Pat. No. 36
The thioether polymer described in 15624 can also be preferably used. As the gelatin, in addition to lime-processed gelatin, acid-processed gelatin, gelatin derivatives such as decalcified gelatin and phthalated gelatin, and low-molecular gelatin can be used. Gelatin oxidized with an oxidizing agent such as hydrogen peroxide or gelatin treated with an enzyme can also be used. A hydrolyzate or an enzymatic hydrolyzate of gelatin can also be used.

The photosensitive silver halide emulsion is spectrally sensitized by the nuclei of methine dyes in order to impart green-sensitive, red-sensitive and infrared-sensitive color sensitivity to the silver halide used in the present invention. Good. Further, if necessary, the blue-sensitive emulsion may be spectrally sensitized in the blue region. In particular, when it is used for laser exposure of an image setter, a color scanner or the like, spectral sensitization matching the wavelength of each laser is required. The dyes used include cyanine dyes, merocyanine dyes, complex cyanine dyes, complex merocyanine dyes, holopolar cyanine dyes, hemicyanine dyes, styryl dyes and hemioxonol dyes. Particularly useful dyes are those belonging to the cyanine dyes, merocyanine dyes, and complex merocyanine dyes. Any of the dyes generally used for cyanine dyes as a basic heterocyclic nucleus can be applied to these dyes. That is, a pyrroline nucleus, an oxazoline nucleus, a thiazoline nucleus, a pyrrole nucleus, an oxazole nucleus, a thiazole nucleus, a selenazole nucleus, an imidazole nucleus, a tetrazole nucleus, a pyridine nucleus and the like; a nucleus in which an alicyclic hydrocarbon ring is fused to these nuclei; benzindo A renin nucleus, an indole nucleus, a benzoxadol nucleus, a naphthoxazole nucleus, a benzothiazole nucleus, a naphthothiazole nucleus, a benzoselenazole nucleus, a benzimidazole nucleus, a quinoline nucleus and the like can be applied. These nuclei may be substituted on carbon atoms. The merocyanine dye or the complex merocyanine dye includes a pyrazolin-5-one nucleus, a thiohydantoin nucleus, and a 2 having a ketomethylene structure nucleus.
-A 5- or 6-membered heterocyclic nucleus such as thiooxazolidine-2,4-dione nucleus, thiazolidine-2,4-dione nucleus, rhodanine nucleus or thiobarbituric acid nucleus can be applied. Specific examples thereof include sensitizing dyes described in U.S. Pat. No. 4,617,257, JP-A-59-180550, JP-A-64-13546, JP-A-5-45828 and JP-A-5-45834. These sensitizing dyes may be used alone or in combination, and the combination of sensitizing dyes is often used particularly for the purpose of wavelength control of supersensitization or spectral sensitization. Along with the sensitizing dye, a dye having no spectral sensitizing effect itself or a compound that does not substantially absorb visible light, or a compound exhibiting supersensitization may be contained in the emulsion (for example, US Patent No. 36
15641, JP-A-59-192242 and 59-
191032 and 63-23145).
In particular, JP-A-59-191032 and JP-A-59-19
No. 2242 is preferably used when a sensitizing dye having a spectral sensitizing sensitivity in the red region to the infrared region is used.

The dye may be added to the emulsion at any stage of emulsion preparation. Most commonly, it is carried out after the completion of chemical sensitization and before coating, but it is added at the same time as the chemical sensitizer as described in US Pat. Nos. 3,628,969 and 4,225,666. It is also possible to perform spectral sensitization at the same time as chemical sensitization.
It can also be carried out prior to the chemical sensitization as described in JP-A-8-113928 and JP-A-4-63337. It is also possible to start the spectral sensitization by adding the silver halide grains before completion of precipitation formation. Furthermore, as taught in US Pat. No. 4,225,666,
Adding these said compounds separately, i.e.
It is also possible to add some of these compounds prior to chemical sensitization and the rest after chemical sensitization, including the method taught in US Pat. No. 4,183,756. It may be at any time during grain formation. The addition amount is 9 × 10 ^{−9 to} 9 per mol of silver halide.
It can be used at × 10 ^-3 mol. These sensitizing dyes and supersensitizers include solutions of hydrophilic organic solvents such as methanol, aqueous solutions (sometimes alkaline or acidic to enhance solubility), dispersions of gelatin or surfactants. It may be added as a solution.

To enhance the adsorption of the sensitizing dye, a soluble Ca compound and a soluble B compound are added before and after the addition of the sensitizing dye.
r compound, soluble I compound, soluble Cl compound, soluble SCN compound may be added. You may use these compounds together. Preferably CaCl ₂ , KI, K
Cl, KBr, KSCN. It may also be in the form of fine grain silver bromide, silver chlorobromide, silver iodobromide, silver iodide, or silver rhodanide emulsion grains.

There are no particular restrictions on other additives to the photographic light-sensitive material to which the emulsion of the present invention is applied. For example, Research Disclosure (Reaarch Dis)
Closure) Volume 176, Item 17643 (RD
-17643), the same volume 187, item 18716 (R
D-18716) and Volume 307, Item 3071.
The description such as 05 can be referred to.

Additives used in such steps and known photographic additives usable in the light-sensitive material and image-receiving material of the present invention are described in RD-17643, RD-18716 and RD-307105. Are listed below. Additive type RD17643 RD18716 RD307105 1 Chemical sensitizer page 23 648 page right column 866 page 2 Sensitivity enhancer same as above 3 Spectral sensitizer page 23 to 24 page 648 right column to 866 to 868 page strong color sensitizer page 649 right Column 4 Whitening agent Page 24 Page 648 Right column to page 868 5 Fog inhibitor 24 pages 25 to page 649 Right column to 868 to 870 and stabilizer 6 Light absorber, page 25 to page 649 Right column to 873 Page Filter 650 page left column Infrared absorber 7 Stain inhibitor 25 page right column 650 page left-right column 8 Hardener 26 page 651 page left column 874-875 9 Binder page 26 same as above 873-874 10 Plasticizer , Lubricants page 27, page 650, right column, page 876 11 Coating aids, interfaces, pages 26-27, ibid., Page 875-876, activator 12 Static, page 27, ibid., 876- 77, pp. Inhibitor 13 matting agent, pp. 878-879

Further, the following compounds and the like can also be used. Item This section 1) Silver halide emulsion and JP-A-2-97937, page 20, lower right column 12, its production line to page 21, left lower column, line 14 and JP-A-2-12236. Page 7, upper right column, line 19 to page 8, left column, lower line 12; Japanese Patent Application No. 3-116573 and Japanese Patent Application No. 3-189532. 2) Spectral sensitizing dyes JP-A-2-55349, page 7, upper left column, line 8 to page 8, lower right column, line 8; JP-A 2-39042, page 7, lower right column, line 8 to Page 13, lower right column, line 5; JP-A-2-12236, page 8, lower left column 1, line 3 to same, lower right column, line 4; and JP-A 2-103536, page 16, lower right column, line 3 Spectral sensitizing dyes described on page 17, lower left column, line 20, and further in JP-A Nos. 1-112235, 2-124560, 3-79928, and Japanese Patent Application Nos. 3-189532 and 3-411064. 3) Surfactant / antistatic From JP-A-2-12236, from the right upper column, line 7 to the stop agent, from the right lower column, line 7 and JP-A-2-18542, page 2, left lower column, line 13 to the fourth Lower right column, line 18 4) Antifoggant / stability JP-A-2-103536, page 17, lower right column, 1 agent, line 9 to page 18, upper right column, line 4 and lower right column, lines 1 to 5; The thiosulfinic acid compounds described in 1-237538. 5) Polymer latex JP-A-2-103536, page 18, lower left column, lines 12 to 20. 6) Compounds having an acid group JP-A-2-103536, page 18, lower right column, line 6 to page 19, upper left column, line 1 and JP-A 2-5 5349, page 8, lower right column, line 13 From the same page, page 1, upper left column, line 8 7) Polyhydroxyben JP-A-2-55349, page 11, upper left column, line 9 zen to the same lower right column, line 17 8) Matting agent / slipping agent / JP-A-2-103536, page 19, upper left column 1, plasticizer, line 5 to page 19, upper right column, line 15 9) Hardener JP-A-2-103536, page 18, upper right column, line 5 to line 17 thereof. 10) Dyes, JP-A-2-103536, page 17, lower right column, lines 1 to 18; and JP-A-2-39042, page 4, upper right column, line 1 to page 6, upper right column, line 5. 11) Binder JP-A-2-18542, page 3, lower right column, lines 1 to 20. 12) Developer and developing method JP-A-2-55349, page 13, lower right column, line 1 to page 16, upper left column, line 10; JP-A-2-03536, page 19, upper right column, line 16 To page 21, upper left column, line 8 13) Black spot inhibitor The compounds described in U.S. Pat. No. 4,956,257 and JP-A No. 1-118832. 14) Redox compound A compound represented by the general formula (I) in JP-A No. 2-301743 (particularly compound examples 1 to 50), a general formula (page 3 to page 20 in JP-A No. 3-174143). R-1), (R-2), (R-3), compounds 1 to 75, and compounds described in Japanese Patent Application Nos. 3-69466 and 3-15648. 15) Monomethine compounds Compounds of the general formula (II) described in JP-A-2-287532 (compound examples II-1 to II-26). 16) Hydrazine nucleating agent JP-A-2-12236, page 2, upper right column, line 19 to page 7, upper right column, line 3, line 3-17 4143, page 20, lower right column, line 1 To page 27, upper right column, line 20, general formula (II) and compound examples II-1 to II-54. 17) Nucleation accelerators JP-A-2-103536, page 9, upper right column, line 13 to page 16, upper left column, line 10 General formulas (II-m) to (II-p) and compound examples II- 1 No. II-22, the compounds described in JP-A-1-179939.

Of the above-mentioned additives, antifoggants and stabilizers are azoles (for example, benzothiazolium salts,
Nitroimidazoles, nitrobenzimidazoles,
Chlorobenzimidazoles, bromobenzimidazoles, nitroindazoles, benzotriazoles,
Aminotriazoles, etc.); Mercapto compounds (eg, mercaptothiazoles, mercaptobenzothiazoles, mercaptobenzimidazoles, mercaptothiadiazoles, mercaptotetrazoles (particularly 1-phenyl-5-mercaptotetrazole and its derivatives), mercapto) Pyrimidines, mercaptotriazines, etc .; thioketo compounds such as oxadrinethione; azaindenes {eg, triazaindenes, tetraazaindenes (especially 4-hydroxy-6-methyl (1,3,3a, 7) Tetraazaindene), pentaazaindenes and the like}; benzenethiosulfones; benzenesulfinic acid; benzenesulfonic acid amide and the like can be preferably used.

In the present invention, the unexposed portion of the silver halide grains reacts with the silver halide solvent to form a soluble silver complex salt, which is reduced on physical development nuclei and deposited on the surface as metallic silver. It was found that the silver image area became lipophilic and the balance with the hydrophilicity of the non-image area was adjusted to form a printing plate. In order to obtain more sufficient printing durability by applying the lithographic printing plate thus obtained to a printing machine, a certain amount of printing ink should always adhere only to the image area and ink stains should not occur on the non-image area. It is necessary to. As a means for selectively reacting with the lipophilic silver image portion and increasing the ink adhering ability, the present inventors have prioritized the printing of the silver image portion on the --SH group or> C = S before applying it to an offset printing machine. It was found that it can be improved by contacting with a liquid containing an organic compound having a group and performing a liposensitizing treatment.

In the present invention, a particularly useful organic compound having a --SH group or a> C.dbd.S group covers a wide variety, and particularly preferable ones are represented by the following general formula (A) and general formula (B). (Hereinafter, referred to as the compound of the present invention).

In the general formula (A) R ₀ -S-M, R ₀ represents an aliphatic hydrocarbon group, an aromatic hydrocarbon group or a heterocyclic group, and each of these substituents is one or more substituents. It may further have a group. Due to its high hydrophobicity, the total number of carbon atoms in the compound is 6 or more, preferably 8 or more. M represents a hydrogen atom or an alkali metal atom. General formula (B)

[0043]

Embedded image

In the formula, R represents hydrogen, an alkyl group having 20 or less carbon atoms, a substituted or unsubstituted aryl group or an aralkyl group, and Q together with N and C in the formula forms a 5- to 6-membered heterocycle. Represents the necessary atomic group.

Specific examples of the 5- or 6-membered heterocycle include imidazole, imidazoline, thiazole, thiazoline, oxazole, oxazoline, pyrazoline, triazole, thiadiazole, thiazolidine, oxadiazole, tetrazole, pyridine, pyrimidine, pyridazine, There are pyrazine, triazine and the like, and these rings may be two or more condensed rings, and may be condensed with a benzene ring or a naphthalene ring which may have a substituent.

Among the compounds of the general formula (A), more preferred compounds are the following general formula (A-1) or the general formula (A
-2). General formula (A-1)

[0047]

Embedded image

In the formula, R ₁₁ represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, an alkenyl group or an aryl group, and each of these substituents may have one or more substituents. Good. Examples of the substituent contained in R ₁₁ include an alkyl group, an aryl group, a cycloalkyl group, an aralkyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an acyl group, an alkoxycarbonyl group, an amino group and an N-substituted amino group. Group, acylamino group, carbamoyl group, N-substituted carbamoyl group, alkylsulfonyl group, arylsulfonyl group, alkylsulfonylamino group, arylsulfonylamino group, sulfamoyl group, N-substituted sulfamoyl group, cyano group, hydroxyl group, nitro group , Halogen atoms, etc. Among these, preferable substituents are an alkyl group, an alkoxy group, an aryloxy group, an alkoxycarbonyl group, an acylamino group, a sulfonylamino group and a halogen atom. l represents an integer of 1 to 5, and when R ₁₁ is 2 or more, they may be the same or different. General formula (A-2)

[0049]

Embedded image

In the general formula (A-2), X is an oxygen atom,
Sulfur atom or> N-R '(R' is a hydrogen atom, an alkyl group, an unsaturated alkyl group, an amino group, an acylamino group,
A sulfonamide group or a substituted or unsubstituted aryl group or aralkyl group), Y and G are carbon atoms or nitrogen atoms, R ₁₂ and R ₁₃ are hydrogen atoms, alkyl groups, substituted or unsubstituted groups, respectively. Aryl group or aralkyl group, -SR "or-
Represents NH ₂ (the R ″ group is a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, an alkylcarboxylic acid or an alkali metal salt thereof or an alkylsulfonic acid or an alkali metal salt thereof), and Y and G are both carbon In the case of atoms, R ₁₂ and R ₁₃ may form a substituted or unsubstituted aromatic carbocycle or nitrogen-containing heterocycle.

Among the compounds of general formula (A-2), particularly preferred compounds are those represented by the following general formulas (A-2a) to (A-2c). General formula (A-2a)

[0052]

[Chemical 4]

General formula (A-2b)

[0054]

Embedded image

General formula (A-2c)

[0056]

[Chemical 6]

Here, n is an integer of 1 or 2, R ₁₄ is R ₁₁
Represents the same substituent, and when n is 2, they may be the same or different. Specific examples of the organic compound having a —SH group or a> C═S group which are preferably used in the present invention are shown below, but the invention is not limited thereto.

[0058]

[Chemical 7]

[0059]

Embedded image

[0060]

[Chemical 9]

[0061]

[Chemical 10]

[0062]

[Chemical 11]

[0063]

[Chemical 12]

[0064]

[Chemical 13]

[0065]

Embedded image

[0066]

[Chemical 15]

The amount of the compound of the present invention effective for the purpose of the present invention is not necessarily uniform for each compound, but is about 0.01 to 10 g / liter, preferably about 0.0.
It has a concentration of 5 to 5 g / liter. The compounds of the present invention may be used alone or in combination. As the solvent,
An aqueous solution buffered between pH 4 and 9 is preferably used, but a water-miscible organic solvent may be used together for the purpose of increasing the solubility of the compound of the present invention. Examples of the organic solvent include acetone, methanol, ethanol, propanol, isopropanol, ethylene glycol, glycerin, tetrahydrofuran, dimethylformamide,
Examples thereof include dimethyl sulfoxide and methyl ethyl ketone, which are used by mixing with water at an arbitrary ratio.

The above-mentioned solution containing the compound of the present invention (referred to as a lipophilic treatment liquid) may contain the above-mentioned silver halide solvent, if necessary. Further, the lipophilic treatment liquid may contain an oxidizing agent for silver particles such as iron (III) ferricyanide salt and water-soluble copper (II) salt. By these, a part of the physically developed silver is oxidatively dissolved and reacts with the compound of the present invention contained in the lipophilic treatment liquid to form a sparingly soluble silver compound again to form a dense lipophilic layer. As a result, printing durability is considered to be improved.

The treatment composition liquid used in the present invention has a pH of 4
It is preferably buffered between 9 and 9. Because the strong alkali reacts with the free fatty acids present in the printing ink to form soap, causing emulsification of the ink and water during printing. On the other hand, if the pH is too low, the solubility of the compound of the present invention for making lipophilic decreases, or the corrosion of machinery is promoted, which is not preferable. Acetic acid is used as a substance for buffering the pH of the liquid in a desired range,
Organic acids such as citric acid and tartaric acid, and inorganic acids such as phosphorous sulfite and boric acid are preferable. The printing plate treated as described above can be stored for a long time after drying.

The lipophilic treatment liquid used in the present invention is
When applied after heat-development silver complex diffusion transfer, for example after treatment in an acidic terminating bath as is commonly used in the treatment of silver halide or in a bath moderately buffered with the above buffers, The effect of the invention can be obtained. For example, the material is set in a printing machine and then the board surface is wiped with absorbent cotton containing the lipophilic treatment liquid.

Various other components may be added to the lipophilic treatment liquid used in the present invention. Examples thereof include hydroxyethyl cellulose, carboxymethyl cellulose, polyvinyl alcohol, polyvinylpyrrolidone, other soluble polymers or , A surface hydrophilizing agent such as colloidal silica, or a colloid curing agent for preventing abrasion of colloid during printing, for example, organic colloid curing agent such as formalin, glyoxal, glutar, aldehyde, tannic acid, dimethylol urea, chromium, It may contain an inorganic curing agent such as aluminum. Further, it may be heat-cured for the purpose of activating the action of these curing agents. Further, higher fatty acids and hydrophobic softening agents described in JP-B-45-29001 may be contained. The contact time with the lipophilic treatment liquid used in the present invention is usually several seconds to 1 minute or less.

By treating the silver image with the lipophilic treatment liquid containing the compound of the present invention, not only the ink up time is shortened, but also the ink receptivity to the insufficient silver image is improved. It is possible to impart the print quality, and it is possible to improve the reproduction characteristics of the printed image and the printing durability.

A hydrophilic binder is preferably used as the binder of the constituent layers of the light-sensitive material and the image-receiving material. Examples thereof include Research Disclosure mentioned above and Japanese Patent Laid-Open No.
Those described on pages (71) to (75) of 4-13,546 can be mentioned. Specifically, a transparent or translucent hydrophilic binder is preferable, and for example, gelatin or a protein or cellulose derivative such as a gelatin derivative, agar, starch, gum arabic, dextran, pullulan, furceleran, carrageenan described in EP-A-443529, Polysaccharides such as locust bean gum, xanthan gum and pectin, natural compounds such as polysaccharides described in JP-A-1-221736 and polyvinyl alcohol, Japanese Patent Application No. 5-339.
Examples thereof include synthetic polymer compounds such as modified alkyl polyvinyl alcohol described in 155, polyvinyl pyrrolidone, and acrylamide polymer. Also, U.S. Pat. No. 4,960,
681 No., superabsorbent polymers described in JP-A-62-245,260, etc., i.e. -COOM or -SO ₃ M
A homopolymer of vinyl monomers having (M is a hydrogen atom or an alkali metal) or the vinyl monomers,
Alternatively, a copolymer with another vinyl monomer (for example, sodium methacrylate, ammonium methacrylate, Sumika Gel L-5H manufactured by Sumitomo Chemical Co., Ltd.) is also used. These binders can be used in combination of two or more. A combination of gelatin and the above binder is preferable, and gelatin may be selected from lime-processed gelatin, acid-processed gelatin, so-called demineralized gelatin with a reduced content of calcium, etc. according to various purposes. preferable.

In the case of the present system in which a small amount of water is supplied for thermal development, the use of the above superabsorbent polymer makes it possible to absorb water quickly, and further, to prevent non-image areas during printing. It is also possible to improve the retention of the immersion water, that is, increase the water retention.

When the content of gelatin is low, hydrophilic polymers other than gelatin may be used as carrageenan described in EP-A-443529 and Japanese Patent Application No.
The modified alkyl polyvinyl alcohol described in JP-A-339155 and the polysaccharide described in JP-A-6-67330 are preferably used.

[0076] The coating amount of total binder of the photosensitive material and the image receiving material is preferably from ^{12g / m 2 ~0.5g / m 2} , in particular 5 g / m ² or less, further more preferably below 3 g / m ² .

As the reducing agent used in the present invention, those known in the field of light-sensitive materials can be used. Further, a dye-donor compound having a reducing property described later is also included (in this case, other reducing agents can be used together). Further, a reducing agent precursor which has no reducing property itself but exhibits reducing property by the action of a nucleophile or heat during the development process can also be used. Examples of the reducing agent used in the present invention include U.S. Pat. No. 4,500,626, columns 49 to 50, U.S. Pat. Nos. 4,839,272, and 4,3.
30,617, 4,590,152, 5,01
7,454, 5,139,919, JP-A-60-
140, 335, pages (17) to (18), ibid. 57-
40,245, 56-138,736, 59-
178, 458, 59-53, 831, 59-
182, 449, 59-182, 450, 60
-119,555, 60-128,436, 6
0-128,439, 60-198,540, 60-181,742, 61-259,253,
62-201,434, 62-244,044
No. 62-131, 253, 62-131, 25
No. 6, No. 63-10, 151, No. 64-13, 546
Nos. (40) to (57), JP-A-1-120,5
No. 53, No. 2-32, 338, No. 2-35, 451
No. 2-234, 158, 3-160, 443
And EP-A-220,746, pages 78 to 96, and the like. Combinations of various reducing agents such as those disclosed in US Pat. No. 3,039,869 can also be used.

When a diffusion resistant reducing agent is used, in order to promote electron transfer between the diffusion resistant reducing agent and the developable silver halide, an electron transfer agent and / or
Alternatively, electron transfer agent precursors can be used in combination. Particularly preferably, said US Pat. No. 5,139,
919, European Patent Publication No. 418,743, JP-A-1
Those described in Nos. -138,556 and 3-102,345 are used. Further, a method of stably introducing into a layer as described in JP-A-2-230,143 and JP-A-2-235,044 is preferably used. The electron transfer agent or its precursor can be selected from the above-mentioned reducing agent or its precursor. It is desirable that the mobility of the electron transfer agent or its precursor is higher than that of the diffusion-resistant reducing agent (electron donor). Particularly useful electron transfer agents are 1-phenyl-3-pyrazolidones or aminophenols. The diffusion-resistant reducing agent (electron donor) used in combination with the electron transfer agent may be one that does not substantially move in the layer of the light-sensitive material among the reducing agents described above, and preferably hydroquinone, Sulfonamide phenols, sulfonamide naphthols, JP-A-53-
Examples thereof include compounds described as electron donors in 110827, US Pat. Nos. 5,032,487, 5,026,634, and 4,839,272. Further, an electron donor precursor as described in JP-A-3-160,443 is also preferably used. Further fairness 3-
63,733, JP-A-1-150,135, and the same 2-
110,557, 2-64,634, 3-4
Development inhibitor releasing reducing compounds such as those described in 3,735 and European Patent Publication No. 451,833 can also be used. In the present invention, the total amount of reducing agents added is 0.
The amount is 01 to 20 mol, particularly preferably 0.1 to 10 mol.

In the present invention, an organic metal salt may be used as an oxidizing agent together with the photosensitive silver halide emulsion. 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 agents include those described in US Pat.
There are benzotriazoles, fatty acids and other compounds described in Nos. 00,626, columns 52 to 53. The acetylene silver described in U.S. Pat. No. 4,775,613 is also useful. Two or more kinds of organic silver salts may be used in combination. The above organic silver salt is 0.01 mol per mol of photosensitive silver halide.
-10 mol, preferably 0.01-1 mol can be used in combination. Total coating amount of light-sensitive silver halide emulsion and the organic silver salt is 0.05 to 10 g / m ² in terms of silver, and preferably from 0.4~3g / m ^2.

In the light-sensitive material of the present invention, a compound capable of activating development and stabilizing an image at the same time can be used.
The specific compounds preferably used are described in US Pat. No. 4,500,626, columns 51 to 52.

Hydrophobic additives such as diffusion resistant reducing agents can be incorporated into the layers of the photographic material by known methods such as the method described in US Pat. No. 2,322,027. In this case, US Pat. Nos. 4,555,470 and 4,5
36,466, 4,536,467, 4,58
7,206, 4,555,476, 4,59
9,296, JP-A-63-306439, and JP-A-62-
No. 8145, No. 62-30247, Japanese Patent Publication No. 3-62,
The high boiling point organic solvent as described in No. 256 can be used in combination with a low boiling point organic solvent having a boiling point of 50 ° C. to 160 ° C., if necessary. Also, these diffusion-resistant reducing agents,
Two or more high boiling point organic solvents can be used in combination.
The amount of the high boiling point organic solvent is 10 g or less, preferably 5 g or less, and more preferably 1 g to 0.1 g, relative to 1 g of the hydrophobic additive used. Also, 1 cc or less, more preferably 0.5 cc or less, and especially 0.3 cc or less is suitable for 1 g of the binder. In addition, a dispersion method using a polymer described in JP-B-51-39,853 and JP-A-51-59,943 or a fine particle dispersion described in JP-A-62-30,242 can be used. A method of adding can also be used. In the case of a compound which is substantially insoluble in water, fine particles can be dispersed and contained in a binder in addition to the above method. When dispersing a hydrophobic compound in a hydrophilic colloid,
Various surfactants can be used. For example, those listed as the surfactants on pages (37) to (38) of JP-A-59-157,636 and described above in Research Disclosure can be used. Also, Japanese Patent Application No. 5-
The phosphate ester type surfactants described in No. 204325, No. 6-19247 and West German Laid-Open Patent No. 1932299A can also be used.

As the image receiving material, if necessary, a mordant known in the photographic field can be used. Specific examples thereof include US Pat. No. 4,500,626, 58 to 59.
Column, JP-A-61-88,256 (32) to (41)
And mordants described in JP-A-1-161,236, pages (4) to (7), U.S. Pat. Nos. 4,774,162, 4,619,883, and 4,594,308. Can be mentioned. Also, US Pat.
A polymer compound as described in No. 463,079 may be used.

The image-receiving material may be provided with an auxiliary layer such as an undercoat layer, an intermediate layer, a back layer and an anti-curl layer, if necessary.

In the constituent layers of the light-sensitive material and the image-receiving material, a high-boiling point organic solvent can be used as a plasticizer, a slipping agent, or an agent for improving the peelability between the light-sensitive material and the image-receiving material. Specific examples include those described in Research Disclosure and JP-A-62-245,253.
Further, various silicone oils (all silicone oils from dimethyl silicone oils to modified silicone oils obtained by introducing various organic groups into dimethyl siloxane) can be used for the above purpose. As an example, various modified silicone oils described in "Modified Silicone Oil" technical material P6-18B issued by Shin-Etsu Silicone Co., Ltd., especially carboxy-modified silicone (trade name X-2
2-3710) is effective. In addition, JP-A-62-2
The silicone oils described in Nos. 15,953 and 63-46,449 are also effective. Examples of the hardener used for the constituent layers of the light-sensitive material and the image-receiving material include Research Disclosure, U.S. Pat. No. 4,678,739, column 41,
No. 4,791,042, JP-A-59-116,655.
No. 62-245, 261, 61-18, 942.
And the hardeners described in JP-A-4-218,044 and the like. More specifically, aldehyde type hardener (formaldehyde etc.), aziridine type hardener, epoxy type hardener, vinyl sulfone type hardener (N, N'-ethylene-bis (vinylsulfonylacetamide)) Ethane),
Examples thereof include N-methylol type hardeners (dimethylolurea etc.) and polymer hardeners (compounds described in JP-A-62-234,157). These hardeners
0.001-1 per 1g of applied hydrophilic binder
g Preferably, 0.005-0.5 g is used. The layer to be added may be any of the constituent layers of the light-sensitive material and the image-receiving material, or may be added by dividing it into two or more layers.

A non-photosensitive hydrophilic colloid layer containing a dye, a pigment, carbon black, or the like for the purpose of preventing halation, irradiation, or the like on the upper or lower part or both of the emulsion layer of the light-sensitive material of the present invention. Is preferably provided. It is preferable that the dye or pigment is sparingly soluble in water, and it is preferable that the dye or pigment is dispersed as fine particles in a solid state and incorporated into the light-sensitive material.

Various antifoggants or photographic stabilizers and their precursors can be used in the constituent layers of the light-sensitive material and the image-receiving material. Specific examples thereof include the above-mentioned Research Disclosure, US Pat.
9,378, 4,500,627, 4,61
4,702, JP-A-64-13,546 (7)-
Pages (9), (57) to (71) and (81) to (9
7), U.S. Pat. Nos. 4,775,610 and 4,62.
6,500, 4,983,494, JP-A-62-1
174, 747, 62-239, 148, 63.
-264,747, JP-A-1-150,135, 2-110,557, 2-178,650, RD
17, 643 (1978) (24) to (25), Japanese Patent Application No. 6-190529, and the like.
These compounds are 5 × 10 ⁻⁶ to 1 × 1 per mol of silver.
0 ^-1 mol is preferable, and 1 x 10 ^-5 to 1 x 10 ^-2 mol is more preferably used.

Various surfactants can be used in the constituent layers of the light-sensitive material and the image-receiving material for the purpose of coating aid, improvement of peeling property, improvement of sliding property, antistatic property, acceleration of development and the like. Specific examples of the surfactant include Research Disclosure, JP-A Nos. 62-173,463 and 62-183.
No. 457, etc. The constituent layers of the light-sensitive material and the image-receiving material may contain an organic fluoro compound for the purpose of improving slipperiness, preventing electrification, improving peelability and the like. As typical examples of the organic fluoro compound, JP-B-57-9053, columns 8 to 17, JP-A-61-20944 and JP-A-62-13.
5826 and the like, or a hydrophobic fluorine compound such as an oily fluorine compound such as fluorine oil or a solid fluorine compound resin such as tetrafluoroethylene resin.

A matting agent can be used in the light-sensitive material and the image-receiving material for the purpose of preventing adhesion, improving slipperiness, and providing a non-glossy surface. Matting agents such as silicon dioxide, polyolefins and polymethacrylates are disclosed in JP-A-61-8.
8256 (29) page, benzoguanamine resin beads, polycarbonate resin beads, AS
Resin beads and the like JP-A-63-274944 and 63-63
There are compounds described in -274952. In addition, the compounds described in the above Research Disclosure can be used.
These matting agents can be added not only to the uppermost layer (protective layer) but also to the lower layer as needed.

The average size of the matting agent is 0.1 μm.
It is preferable to use those having a thickness of from 20 μm to 20 μm. The matting agent may be added in a weight ratio of 1 to 40 with respect to the binder.
%, More preferably 2 to 20%. By using these matting agents, not only the slip property of the surface of the light-sensitive material is improved and the handling property is improved, but also vacuum drawing becomes easy when the light-sensitive material is brought into close contact with a return film or a PS plate.

At this time, the size and / or amount of the matting agent added to the silver halide emulsion layer side (sensitive material side) and the opposite side (back side) from the support side. May be different or the same.

In the image-receiving material of the present invention, the retention of dampening water in the non-image area at the time of printing is improved, that is, the water retention is improved to improve the stain of printing, and the ink in the image area is improved. Fine particle powders can be added for the purpose of improving the ink receptivity, increasing the contrast of the printed image, improving the sharpness, and further improving the printing durability. As the fine particle powder used here, for example, titanium oxide, zinc oxide, barium sulfate, silica, clay, talc, sieglite, rice starch and the like can be mentioned.
Those having a particle size of are preferable, and silica is particularly preferable. These may be used alone, or two or more fine particle powders may be used in combination, or different powders may be used for each layer. The addition amount of the fine particle powder is preferably 1 to 40% by weight, and particularly preferably 5 to 25% by weight based on the binder.

In addition, the constituent layers of the light-sensitive material and the image-receiving material may contain a thermal solvent, a defoaming agent, an antibacterial / antifungal agent, colloidal silica and the like. Specific examples of these additives are described in JP-A-61-88256, pages (26) to (32), JP-A-3-11,338, JP-B-2-51,496 and the like.

In the present invention, an image formation accelerator can be used in the light-sensitive material and / or the image-receiving material. The image forming accelerator has an interaction with a base or the above-mentioned base precursor, a nucleophilic compound, a high-boiling organic solvent (oil), a thermal solvent, a surfactant, silver or silver ion in terms of physicochemical function. It is classified as a compound. However, these substance groups generally have a composite function, and usually have some of the above-mentioned accelerating effects together. Details thereof are described in US Pat. No. 4,678,739, columns 38 to 40.

In the present invention, various development stoppers can be used in the light-sensitive material and / or the image-receiving material for the purpose of always obtaining a constant image with respect to variations in processing temperature and processing time during development. The term "development terminating agent" as used herein refers to a compound that immediately neutralizes or reacts with a base to reduce the concentration of the base in the film to stop the development after proper development, or inhibits development by interacting with silver and a silver salt. Compound. Specific examples thereof include an acid precursor that releases an acid when heated, an electrophilic compound that causes a substitution reaction with a coexisting base when heated, or a nitrogen-containing heterocyclic compound, a mercapto compound and a precursor thereof. For more details, see JP-A-62-25
No. 3,159, pages (31) to (32).

In the present invention, as the support for the light-sensitive material and the image-receiving material, those which can withstand the processing temperature are used. Generally speaking, edited by The Photographic Society of Japan, "Basics of Photographic Engineering -Silver Salt Photo-", published by Corona Publishing Co., Ltd. (1979).
Examples include papers described in pages (223) to (240) and photographic supports such as synthetic polymers (films). Specifically, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyvinyl chloride, polystyrene, polypropylene, polyimide, polyarylate, celluloses (for example, triacetyl cellulose) or a pigment such as titanium oxide is contained in these films. Film, synthetic paper made from polypropylene or the like, mixed paper made from synthetic resin pulp such as polyethylene and natural pulp, Yankee paper, baryta paper, coated paper (particularly cast coated paper), metal, cloth, Glass or the like is used. These can be used alone or as a support laminated on one or both sides with a synthetic polymer such as polyethylene. The laminate layer may contain pigments and dyes such as titanium oxide, ultramarine blue and carbon black as required. In addition to this, JP-A-62-25
No. 3,159, pages (29) to (31), JP-A-1-16
1,236, pages (14) to (17), JP-A-63-31
6,848, JP-A-2-22,651, and 3-5.
The supports described in US Pat. No. 6,955, US Pat. No. 5,001,033 and the like can be used. The back surface of these supports may be coated with a hydrophilic binder, a semiconductive metal oxide such as alumina sol or tin oxide, carbon black and other antistatic agents. Specifically, JP-A-63-2
The support described in No. 20,246 can be used. It is desirable to design so that the surface resistivity is 10 12 Ω · cm or less. Further, the surface of the support is preferably subjected to various surface treatments and undercoats for the purpose of improving the adhesion with the hydrophilic binder.

As a method for exposing and recording an image on a light-sensitive material, for example, a method of directly photographing a landscape or a person by using a camera, a method of exposing through a reversal film or a negative film by using a printer or an enlarger, A method of scanning and exposing an original image through a slit or the like using an exposure device of a copier, a light emitting diode for image information via an electric signal, various lasers (laser diode,
Scanning exposure by emitting light such as gas laser (Japanese Patent Application Laid-Open No. 2-129,625, Japanese Patent Application No. 3-338,1)
No. 82, No. 4-9,388, No. 4-281,442, etc.), image information is output to an image display device such as a CRT, a liquid crystal display, an electroluminescence display, a plasma display, or directly or There is a method of exposing through an optical system. Further, it is preferable that the printed image is exposed by combining with a mirror or the like so that the printed image does not become a mirror image.

As a light source for recording an image on a photosensitive material,
As described above, natural light, tungsten lamps, light emitting diodes, laser light sources, CRT light sources, etc., US Pat. No. 4,500,626, column 56, JP-A-2-53,37.
The light sources and exposure methods described in No. 8 and No. 2-54,672 can be used.

Lin, which is a commercially available Ar laser exposure device
Oxytype-Hell's DC series, Crosfield's Magnascan series, commercially available He-Ne laser exposure equipment SG series from Dainippon Screen, and Fuji Photo Film's Lux Scan, which is a commercially available semiconductor laser exposure equipment. Dainippon Screen MT
Color scanner such as R and Agfa-Gevae
rt's Selectset (He-Ne), Avantra (Red-LD), Li
Nottype-Hell's Herkules (Red-LD), Sc
Itex's Dolev (He-Ne), Agfa-Gevaer
Accuset (Red-LD) of t company, Lux S of Fuji Photo Film Co., Ltd.
An image setter such as etter5600 or a facsimile exposure device such as NEC 240R can be used.

Further, it is possible to use a blue light emitting diode, which has made remarkable progress in recent years, and a light source combined with a green light emitting diode and a red light emitting diode. In particular, Japanese Patent Application Nos. 6-40164, 6-40012, and 6-4
No. 2732, No. 6-86919, No. 6-93421
No. 6, 6-94820, 6-96628, 6-
The exposure apparatus described in No. 149609 can be preferably used.

Image exposure can also be performed using a wavelength conversion element in which a nonlinear optical material and a coherent light source such as a laser beam are combined. Here, the non-linear optical material is a material capable of exhibiting non-linearity between polarization and an electric field that appears when a strong optical electric field such as laser light is applied, and includes lithium niobate and potassium dihydrogen phosphate (KD).
P), lithium iodate, inorganic compounds typified by BaB ₂ O ₄ , urea derivatives, nitroaniline derivatives, nitropyridine-N such as 3-methyl-4-nitropyridine-N-oxide (POM). -Oxide derivatives, JP-A-61-53462 and JP-A-62-210432
The compounds described in No. 10 are preferably used. As a form of the wavelength conversion element, a single crystal optical waveguide type, a fiber type and the like are known, and any of them is useful. Further, the above-mentioned image information is an image signal obtained from a video camera, an electronic still camera, or the like, Nippon Television Signal Standard (NTS).
A television signal represented by C), an image signal obtained by dividing an original image into a large number of pixels such as a scanner, or an image signal created by using a computer represented by CG or CAD can be used.

The light-sensitive material and / or the complexing agent sheet of the present invention may have a form having a conductive heating element layer as a heating means for heat development and silver salt diffusion transfer.
The heat generating element in this case is disclosed in JP-A-61-145,544.
You can use the ones listed in the issue. In the present invention, the heat development is carried out in the presence of a small amount of water. In this system, the heating temperature is preferably 50 ° C to 100 ° C.

As the water used in the present invention, any water may be used as long as it is generally used. Specifically, distilled water, tap water, well water, mineral water and the like can be used. Further, in the heat developing apparatus using the light-sensitive material and the image-receiving material of the present invention, water may be used up, or may be circulated for repeated use. In the latter case, water containing the components eluted from the material will be used. Further, JP-A-63-144,354 and 63-144,3.
55, 62-38,460, JP-A-3-210,
You may use the apparatus and water described in No. 555 etc. further,
Low boiling point solvent that dissolves in water, surfactant, antifoggant,
A complex-forming compound, a fungicide and a fungicide may be contained.

These solvents can be applied to the light-sensitive material, the image-receiving material, or both, but are preferably applied to the light-sensitive material. The amount used may be not more than the weight of the solvent corresponding to the maximum swelling volume of the entire coated film. As a method of applying this water, for example, JP-A-62-253,15
The method described in No. 9 (5), JP-A-63-85,544, etc. is preferably used. Further, the solvent may be enclosed in microcapsules, or may be incorporated in the form of a hydrate in the light-sensitive material or the image-receiving material or both in advance. The temperature of the applied water is the same as in the above-mentioned JP-A-63-85,54.
As described in No. 4 etc., it may be 30 ° to 60 ° C.
In particular, it is useful to set the temperature to 45 ° C. or higher for the purpose of preventing the growth of various fungi in water.

A hydrophilic thermal solvent that is solid at room temperature and dissolves at high temperature can be incorporated in the photosensitive material and / or the image receiving material. The layer to be incorporated may be any of the light-sensitive silver halide emulsion layer of the light-sensitive material, the intermediate layer and the protective layer, and any layer of the image-receiving material. Examples of hydrophilic thermal solvents include ureas, pyridines, amides, sulfonamides, imides, alcohols, oximes and other heterocycles.

As a heating method in the developing and / or transferring step, a heated block or plate is brought into contact with a heating plate, a hot presser, a heating roller, a heating drum, a halogen lamp heater, an infrared and far infrared lamp heater. There is a method of contacting with, etc. or passing through in a high temperature atmosphere. A method of superposing a light-sensitive material and an image-receiving material is disclosed in JP-A-62-253,159 and JP-A-61-161.
The method described in page 147, 244 (27) can be applied.

Any of a variety of heat developing apparatus can be used in processing the photographic elements of this invention. For example, JP-A-59-7
5,247, 59-177,547, 59-1
81,353, 60-18,951, No. 62
-25,944, Japanese Patent Application Nos. 4-277,517 and 4
The devices described in No. 243,072, No. 4-244,693 and the like are preferably used. Further, as commercially available devices, Pictrostat 100, Pictrostat 200, Pictrostat 300, Pictrostat 3000, Pictrograph 3000, and Pictrostat 2000 manufactured by Fuji Photo Film Co., Ltd. can be used.

The speed (linear speed) at which these heat developing devices convey the film may be slow or fast. If the size of the device is to be reduced, the linear velocity may be 200 mm / min or less, for example, and if a large amount of film is to be processed in a short time, the linear velocity may be 1000 mm / min or more. Alternatively, a high linear velocity of 1500 mm / min or more may be used. Of course, linear velocities intermediate between these may be used depending on the purpose.

[0108]

The present invention will be described with reference to the following examples.
The present invention is not limited to these.

A backing layer was prepared by dispersing an amount of carbon black giving an optical density of 1.0 and a matting agent having an average particle size of 5.5 μm in polyvinyl chloride on one surface of a polyester film support having both surfaces undercoated. Coating, and apply the composition shown in Table 1 below to the surface opposite to the support,
A photosensitive material was obtained.

[0110]

[Table 1]

The method for preparing the emulsion used in Table 1 above will be described. Gelatin 20 g and sodium chloride 3 g are dissolved in 650 cc of water at 40 ° C. with stirring. After complete dissolution, compound
Add 15 cc of 0.1% methanol solution of (1). While stirring this solution and keeping it at 40 ° C., a silver nitrate solution (AgNO ₃ 5
0 g of water added to 300 cc) is added over 5 minutes. 5 seconds after starting the addition of the silver nitrate solution, the halogen solution (NaCl
17 g, KBr 1.75 g, (NH ₄ ) ₃ RhCl ₆ 4 × 10 ^-2 mg
To 300 cc by adding water) is added over 4 minutes and 55 seconds. Two minutes after the addition was completed, 300 cc of an aqueous silver nitrate solution having the same concentration as above and a halogen solution (NaCl 17 g, KBr 1.
75 g, K ₃ IrCl _{6 (} 0.3 mg) to which water was added to make 300 cc) were simultaneously added in 5 minutes. After the addition is complete, 20
The temperature is kept at 40 ° C. for a minute, then 680 cc of water is added, and 15 cc of IN sulfuric acid and 15 cc of a 1% aqueous solution of the precipitating agent (1) are added.
The pH at this time is about 4.0. After the silver halide grains have settled, 2200 cc of the supernatant is removed to remove salts. Add 2000 cc of water and add the supernatant to 22
Remove 00cc. 22 g of gelatin and 1N Na
2 cc of OH and 4 cc of 10% aqueous solution of NaCl were added, and 70 mg of the preservative (1) was added to obtain a silver chlorobromide emulsion (Br 5 mol%). The pH of this silver chlorobromide emulsion is 6.0 and the yield is about 60.
0 g.

Next, a method for preparing a dispersion of the reducing agent 1,5-diphenyl-3-pyrazolidone will be described. 1,5-diphenyl-3-pyrazolidone 10 g, surfactant (1)
0.1 g and 0.5 g of the surfactant (2) were added to 90 ml of 3% lime-treated gelatin aqueous solution and dispersed for 30 minutes using glass beads having an average particle size of 0.75 mm. The glass beads were separated to obtain a gelatin dispersion of the reducing agent. A gelatin dispersion of zinc hydroxide was also prepared according to this method.

[0113]

Embedded image

Next, an image receiving material having a constitution as shown in Table 2 was prepared. Palladium sulfide was prepared according to the method described in JP-B-48-16725.

[0115]

[Table 2]

[0116]

[Chemical 17]

The light-sensitive material obtained as described above was imagewise exposed, immersed in water kept at 40 ° C. for 2.5 seconds, then squeezed with a roller and immediately superposed so that the image-receiving material and the film surface were in contact with each other. Next, the photosensitive material was peeled off by heating for 20 seconds using a heat drum whose temperature was adjusted so that the water-absorbed film surface temperature became 75 ° C. The obtained image-receiving material is directly mounted on a Hamada 611XLA-II printing machine as a printing plate,
Printing was performed after wetting with water. As a result, a print number of 750 or more was obtained.

Next, the image-receiving material subjected to the above treatment was immersed in a lipophilic treatment liquid 101 having the composition shown in Table 3 at 25 ° C. for 20 seconds, squeezed and dried to obtain a printing plate 101.

[0119]

[Table 3]

This printing plate 101 was mounted on the same printing machine as above, wetted with water and then printed. As a result, 100
A print number of 0 or more was obtained.

Similarly, the lipophilic treatment liquids 102 to 10 shown in Table 3 were used.
4 was dipped in No. 4 at 25 ° C. for 20 seconds, squeezed and then dried to obtain printing plates 102 to 104. It was mounted on the same printing machine as above, and after printing with water, printing was performed. Table 4 shows the results.

[0122]

[Table 4]

Ink up refers to printing after the plate surface is coated with water, ink and a water roller are brought into contact with the plate surface to start normal printing, and then the ink density in the image area reaches a sufficient equilibrium density. The printing durability is 175 lines /
Represents the number of printable 10% halftone dots in inches. From these results, it is clear that a good printing plate can be obtained by the method of the present invention.

Claims (2)

[Claims] 1. A silver halide light-sensitive material containing at least a light-sensitive silver halide, a binder, and a basic metal compound which is poorly soluble in water on a support, after the imagewise exposure or at the same time as the imagewise exposure, the base is added. Image-receiving material containing a complex forming compound for a metal ion forming a water-soluble metal compound and a silver halide solvent, and a physical development nucleus layer coated on the outer surface thereof, and the film surface are superposed in the presence of a reducing agent and water. A planographic printing plate characterized by using the silver image as an ink receiving part by forming a silver image on the physical development nuclei layer by a silver complex salt diffusion transfer method by heating together and peeling off both materials. How to create. 2. The lipophilic treatment is performed by bringing the silver image obtained on the image receiving material into contact with a liquid containing an organic compound having a —SH group or a> C═S group. The method for preparing the planographic printing plate described in 1.