JPH0980671A - Silver halide photographic sensitive material and image forming method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the contrast and enhance the sensitivity by containing at least one specified compound in a silver halide emulsion layer and/or another hydrophilic colloid layer. SOLUTION: In a silver halide photographic sensitive material having at least one silver halide emulsion layer and at least one other hydrophilic colloid layer on a base, at least one compound represented by the formula R1 - NHNHCOCONHNHCO-R2 is contained on the silver halide emulsion layer and/or the other hydrophilic colloid layer. In the formula, R1 represents aryl group or heterocyclic group, R2 represents hydrogen atom, trifluoromethyl group, aryl group which may have a substituent, heterocyclic group, alkyl group, aryloxy group, alkoxy group, or heterocyclic oxy group. The use of a high alkali developer is not needed to provide photographic characteristic of superhigh contrasty by use of this silver halide photographic material, and a stable developer can be used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silver halide photographic light-sensitive material and an image forming method, and more particularly to a super-high contrast silver halide photographic light-sensitive material and a super-high contrast image forming method used for photolithography.

[0002]

2. Description of the Related Art Lith-type photosensitive materials have been used for many years to achieve ultra-high contrast photographic characteristics in the graphic arts field. Since the squirrel developer has a very low concentration of sulfite ions, it is susceptible to air oxidation, and requires various measures and efforts to maintain development quality during continuous use.
As a method of eliminating the instability of image formation by lith development and obtaining photographic characteristics of ultra-high contrast, Research Disclosure, 235, 346-351 (1983)
As disclosed in U.S. Pat. No. 4,269,929, pH 10 to 1 in the presence of a hydrazine compound.
A method of processing with a developing solution of No. 2 has been proposed. However, pH
A developer having a viscosity of 11.0 or more is easily oxidized by air, is unstable, and cannot endure long-term use or storage. A method of processing a silver halide photographic light-sensitive material containing a hydrazine compound with a developer having a lower pH is disclosed in U.S. Pat.
As disclosed in the specifications of US Pat. No. 365 and 4,998,604, a highly active hydrazine compound is used,
A method for obtaining a high-contrast negative image with the above developer has been proposed. However, this method is disclosed in JP-A-6-2304.
As can be seen from Japanese Patent Application Publication No. 96-96, etc., the high contrast is not sufficient and the practical requirements are not satisfied.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of a silver halide photographic light-sensitive material containing a hydrazine compound and to provide a silver halide photographic light-sensitive material having extremely high contrast and high sensitivity. And an image forming method.

[0004]

The object of the present invention is to provide a silver halide photographic light-sensitive material having at least one silver halide emulsion layer and at least one other hydrophilic colloid layer on a support. Silver emulsion layer and / or
Or the other hydrophilic colloid layer has the following general formula (I)
It can be achieved by a silver halide photographic light-sensitive material containing at least one compound represented by the formula (1) and an image forming method in which the silver halide photographic light-sensitive material is treated with an aqueous alkaline developer.

General formula (I) R ₁ --NHNHCOCONHNHCO--R ₂

In the formula, R ₁ represents an aryl group or a heterocyclic group, and R ₂ represents a hydrogen atom, a trifluoromethyl group, an optionally substituted aryl group, a heterocyclic group, an alkyl group, an aryloxy group. Represents a group, an alkoxy group or a heterocyclic oxy group.

The general formula (I) will be specifically described below. In the formula, R ₁ represents an aryl group or a heterocyclic group,
R ₂ represents a hydrogen atom, a trifluoromethyl group, an aryl group which may have a substituent, a heterocyclic group, an alkyl group, an aryloxy group, an alkoxy group or a heterocyclic oxy group. The aryl group represented by R ₁ is a phenyl group,
And a naphthyl group. Examples of the heterocyclic group include a pyridyl group, a benzothiazolyl group, and a quinolyl group. R ₁ is preferably an aryl group. The aryl group or heterocyclic group represented by R ₁ may have various substituents. As the substituent, for example, a halogen atom, an alkyl group, an alkoxy group, an acylamino group, a sulfonylamino group, a urea group, a hydroxy group, an amino group, an alkylamino group, a carboxy group, an alkoxycarbonyl group,
Examples thereof include a carbamoyl group and a sulfo group.
Preferred substituents of the aryl group or heterocyclic group represented by R ₁ include silver halide adsorption promoting groups such as a thiourea group, a thiourethane group, a heterocyclic thioamide group, a mercapto heterocyclic group, and a triazole group. Can be. Furthermore, examples of the substituent of the aryl group or heterocyclic group represented by R ₁ include a group having a quaternary ammonium cation and a group having at least 3 or more repeating ethyleneoxy units. Examples of R ₂ include a hydrogen atom, a trifluoromethyl group, an optionally substituted phenyl group, a phenoxy group, a benzoyl group, a methoxy group, an ethoxy group, and the like, but a hydrogen atom, trifluoromethyl group Groups are preferred. Hereinafter, specific examples of the compound represented by Formula (I) used in the present invention will be shown. However, the invention is not limited to only these specific examples.

[0008]

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[0009]

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[0012]

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[0013]

[Chemical 6]

[0014]

[Chemical 7]

[0015]

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[0016]

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[0017]

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[0018]

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The synthetic method of the compound (1) of the present invention will be described. (A) Synthesis of oxalic acid ethyl ester phenylhydrazine While heating 23 g of diethyl oxalate to around 70 ° C., 17 g of phenylhydrazine was added dropwise under stirring for about 1 hour. Then, the mixture was stirred at 80 ° C for 30 minutes and then left standing to cool. 80 ml of n-hexane was added thereto, and the deposited precipitate was filtered, washed with n-hexane and dried. This was recrystallized from ethanol. Melting point 118-119 ° C
16 g (yield 48.9%) of the target compound of (B) Synthesis of Exemplified Compound (1) (β-formyl-β′-phenyloxalic acid dihydrazide) 3.1 g of oxalic acid ethyl ester hydrazide synthesized in (A), 1.2 g of formic acid hydrazide, 20 m of methanol
1 was heated to reflux for 15 hours. Then, the solvent methanol was evaporated to reduce the amount to half, and the deposited precipitate was filtered, washed with methanol, and then dried. This was purified and isolated by silica gel chromatography. Melting point 230-2
1 g (yield 30.3%) of the desired product at 33 ° C was obtained. Other exemplified compounds can be synthesized in the same manner as described above.

The addition amount of the compound of formula (I) of the present invention is preferably 1 × 10 ^-6 mol to 1 × 10 ^-1 mol per mol of silver halide, particularly 1 × 10 ^-5 mol to 3 × 10 ^-2 mol per mol of silver is the preferred amount. The compound of the formula (I) of the present invention can be used by dissolving it in a suitable water-miscible organic solvent, for example, alcohols, ketones, dimethylformamide, methyl cellosolve and the like. Further, by a well-known emulsification dispersion method, a high boiling point organic solvent such as dibutyl phthalate or diethyl phthalate is dissolved using an auxiliary solvent such as ethyl acetate or cyclohexane to mechanically prepare an emulsified dispersion for use. You can also

The silver halide emulsion used in the present invention is
Any composition such as silver chloride, silver bromide, silver chlorobromide, silver iodobromide and silver iodochlorobromide can be used. Various known techniques are used for preparing the silver halide emulsion used in the present invention. For example, P. Grafficides "Simmy e Physique Photographic" published by Paul Montel, 1967, GF Duffin "Photographic Emulsion Chemistry" published by The Focal Press, 1966, etc. Can be prepared using the method described in. The form, crystal habit, size distribution and the like of silver halide grains are not particularly limited, but those having a grain size of 0.5 μm or less are preferred. Further, those having a narrow particle size distribution are preferred, and so-called monodispersed emulsions are preferred. As a method for reacting a water-soluble silver salt (for example, an aqueous solution of silver nitrate) with a water-soluble halogen salt (for example, sodium chloride or potassium bromide), a simultaneous mixing method, in particular, a double jet method or a triple jet method in which pAg is controlled is used. preferable. The silver halide emulsion used in the present invention is preferably an emulsion containing an iridium salt or a rhodium salt.
In particular, a combination of both is preferred. Examples of the rhodium salt include rhodium trichloride and ammonium hexachloride (III). Examples of the iridium salt include iridium trichloride, iridium tetrachloride, potassium hexachloride iridate (III), potassium hexachloride iridium (IV), and the like.

The silver halide emulsion of the present invention may be subjected to gold sensitization and sulfur sensitization. Examples of the gold sensitizer include potassium chloroaulite, potassium aurithiocyanate, and auric chloride. Examples of the sulfur sensitizer include thiosulfates, thioureas, rhodanines and the like, in addition to sulfur compounds in gelatin. A spectral sensitizing dye can be added to the silver halide emulsion of the present invention. Dyes used include cyanine dyes, merocyanine dyes, complex cyanine dyes, complex merocyanine dyes, hemicyanine dyes, styryl dyes, oxonol dyes, and the like. Particularly useful dyes are those belonging to the cyanine dye and merocyanine dye systems. These sensitizing dyes may be used alone, but may also be used in combination for the purpose of supersensitization in order to obtain spectral sensitivity according to the purpose. Various dyes and ultraviolet absorber dyes can be added to the silver halide emulsion layer or other hydrophilic colloid layer of the present invention for the purpose of preventing halation and irradiation.

Gelatin is mainly used as the binder or protective colloid that can be used in the emulsion layer and other hydrophilic colloid layers of the photographic light-sensitive material of the present invention, but other than that, for example, gelatin derivatives, Proteins such as albumin and casein, cellulose derivatives such as ethyl cellulose and carboxymethyl cellulose, sugar derivatives such as starch derivatives, hydrophilicity such as polyvinyl alcohol, polyacrylic acid, polyacrylamide and polymethacrylic acid such as single or copolymer Polymers can be used.

The emulsion layer and other hydrophilic colloid layers of the photographic light-sensitive material of the present invention are for the purpose of preventing fog during the manufacturing process, storage or development, or stabilizing the photographic performance. , Various compounds can be added. Examples of this compound include benzothiazolinium salts,
Nitroindazoles, nitrobenzimidazoles,
Examples thereof include many compounds conventionally known as antifoggants or stabilizers such as mercaptothiazoles, mercaptothiadiazoles, benzotriazoles, mercaptotetrazole and other azoles, and azaindenes. Of these, particularly preferred are benzotriazoles and nitroindazoles. These compounds may be contained in a processing solution used for the development processing.

The emulsion layer and other hydrophilic colloid layers of the photographic light-sensitive material of the present invention can contain an inorganic or organic hardener. Examples of the hardener include chromium salts (such as chrome alum), aldehydes (such as formaldehyde and glyoxal), N-methylol compounds, dioxane derivatives, and active vinyl compounds. They can be used alone or in combination.

The emulsion layer and other hydrophilic colloid layers of the photographic light-sensitive material of the present invention include coating aids, antistatic agents, slipperiness improvement, emulsion dispersion, adhesion prevention and photographic property improvement (for example,
A surfactant may be contained for various purposes such as development acceleration, high contrast, sensitization, etc.). Examples of the surfactant include saponins, alkylene oxide derivatives (polyethylene glycol, polyethylene glycol alkyl ethers, etc.), glycidol derivatives (alkenyl succinic acid polyglycerides, alkylphenol polyglycerides, etc.), fatty acid esters of polyhydric alcohols, and sugars. Nonionic surfactants such as alkyl esters, anions having an acidic group such as carboxy group, sulfo group, sulfate group, phosphate group such as alkyl carboxylate, alkyl sulfate, alkyl phosphate, etc. Amphoteric surfactants, amino acids, aminoalkylsulfonic acids, amphoteric surfactants such as aminoalkylsulfuric acid or phosphate esters, aliphatic or aromatic quaternary ammonium salts, or heterocyclic quaternary ammonium salts Etc. It can be exemplified emissions surfactant.

The emulsion layer and other hydrophilic colloid layers of the photographic light-sensitive material of the present invention may contain a dispersion of a water-soluble or sparingly soluble synthetic polymer for the purpose of improving dimensional stability. For example, alkyl (meth) acrylate, alkoxyalkyl (meth) acrylate, (meth) acrylamide, vinyl ester, glycidin (meth) acrylate, acrylonitrile, styrene, etc., alone or in combination, or acrylic acid, methacrylic acid, It can be used in combination with a polymer having a combination of α, β-unsaturated dicarboxylic acid, styrenesulfonic acid and the like as a monomer component.

Other hydrophilic colloid layers other than the silver halide emulsion layer in the present invention include a surface protective layer,
Examples thereof include an intermediate layer, a filter layer, an antihalation layer and an antistatic layer. A matting agent can be contained in a hydrophilic colloid layer such as a surface protective layer for the purpose of preventing adhesion and the like. As a matting agent, US Pat. No. 2,70
No. 1,245, No. 2,992,101, No. 4-1
Fine particles such as homopolymers of polymethyl methacrylate, copolymers of methyl methacrylate and methacrylic acid, starch, silica, and magnesium oxide described in the specifications of JP-A Nos. 42,894 and 4,396,706 can be used. . In addition, US Pat.
9,576 and 4,047,958, the silicone compounds described in JP-B-56-23139.
Colloidal silica, paraffin wax, higher fatty acid esters, and the like described in Japanese Patent Application Laid-Open (JP-A) No. H11-15095 can be added.

Polyols such as trimethylolpropane, pentanediol, butanediol, ethylene glycol and glycerin can be used as a plasticizer in the emulsion layer and other hydrophilic colloid layers of the photographic light-sensitive material of the present invention. Further, a fluorescent whitening agent, a development accelerator, a pH adjuster, a thickener, an antistatic agent and the like can be added to the emulsion layer and other hydrophilic colloid layers.

As the support of the photographic light-sensitive material of the present invention,
Cellulose triacetate, cellulose diacetate,
Nitrocellulose, polystyrene, polyethylene terephthalate, etc. can be used. Particularly preferred is
It is a polyethylene terephthalate film. These supports may be corona-treated by a known method,
Further, if necessary, it may be subjected to a subbing process by a known method. In addition, a waterproof layer containing a polyvinylidene chloride-based polymer may be provided in order to increase the so-called dimensional stability, in which dimensions change due to changes in temperature or humidity.

In order to obtain ultrahigh contrast photographic characteristics using the silver halide photographic light-sensitive material of the present invention, the pH value described in the conventional lith developer or US Pat. No. 2,419,975 is used.
It is not necessary to use a high alkali developer close to 13, and a stable developer can be used. That is, for the silver halide photographic light-sensitive material of the present invention, a developer containing sufficient sulfite ion (especially 0.15 mol / l or more) as a preservative can be used, and pH of 9.5 or more, particularly, 10.5-1
With the developer of 2.3, a negative image having a sufficiently high contrast can be obtained.

The developing agents used in the processing of the photographic light-sensitive material of the present invention include dihydroxybenzenes and 3-
Pyrazolidones, aminophenols and the like can be used alone or in combination. In addition to the above, the developing solution also includes pH buffers such as alkali metal sulfites, carbonates, borates, and phosphates, bromides, iodides, and organic antifoggants (preferably nitroindazoles or benzotriazoles). ) Etc. can be included. Also, if necessary, a water softener, a dissolution aid, a color tone agent, a development accelerator, a surfactant, a defoaming agent, a film hardener, a film silver stain inhibitor (for example, 2-mercaptobenzimidazoles). Etc. may be included.

As the fixing liquid, those having a generally used composition can be used. As the fixing agent, in addition to thiosulfates and thiocyanates, organic sulfur compounds known to be effective as a fixing agent can be used. or,
The fixer may contain a water-soluble aluminum salt or the like as a hardening agent.

[0034]

EXAMPLES The present invention will be described below based on examples. Example 1 An aqueous solution of silver nitrate in an aqueous solution of gelatin maintained at 55 ° C.
Double mixed solution of sodium chloride and potassium bromide (containing 5 × 10 ^-7 mole of potassium hexachloride iridate (III) and 2 × 10 ^-7 mole of ammonium hexachloride rhodium (III) per mole of silver) The mixture was added and mixed by a jet method over 60 minutes to prepare a silver chlorobromide emulsion (silver bromide content: 30 mol%) composed of a monodisperse cube having an average particle size of 0.3 μm. After the particles were formed, the particles were washed with water by a conventional method to remove soluble salts. Next, gelatin was added, and further, sodium chloride, potassium bromide, and sodium hydroxide were added to adjust the pAg to 7.6 and the pH to 6.0, and then sodium thiosulfate was added per mole of silver. 2 × 10
^-5 mol, 3 × 10 ^-5 mol of potassium chloroaulite was added, and the mixture was subjected to chemical sensitization at 60 ° C. for 40 minutes. 4-hydroxy-6-methyl-1,3,3a, 7 as a stabilizer
-5 × 10 ^-3 mole per mole of silver of tetrazaindene was added. Further, the compound of the general formula (I) of the present invention was added as shown in Table 1.

Further, 5-methylbenzotriazole is 3 × 10 ^-3 mol per mol of silver, 1-phenyl-5-mercaptotetrazole is 4 × 10 ^-4 mol per mol of silver,
The polyethyl acrylate compounds 1 m ² per 0.8g described in Preparation Formulation 3 of Japanese Patent Publication 45-5331 discloses a polymer latex, a p- sodium dodecylbenzenesulfonate as a coating aid 1 m ² per 40 mg,
As a hardening agent, 1,3-divinylsulfonyl-2-propanol was added so as to be 100 mg / m ² . The prepared emulsion was coated on a polyethylene terephthalate support simultaneously with the following protective layer so that the amount of silver was 3.2 g per 1 m ² . The protective layer overlying the silver halide emulsion layer had a gelatin content of 1.2 g / m ² , and the protective layer had a mean particle size of 3.4 as a matting agent.
μm polymethyl methacrylate, silicone oil,
Sodium p-dodecylbenzenesulfonate and the like were contained. In this way, Samples 1 to 11 shown in Table 1 were prepared.

[0036]

[Table 1]

These samples were exposed under a light wedge, developed with a developer having the following composition at 35 ° C. for 30 seconds, fixed, washed with water,
Drying was performed. Water 700 ml EDTA · 2Na salt 0.6 g Phenidone 1.2 g Potassium sulfite (55% aqueous solution) 120 ml Hydroquinone 18 g Benzotriazole 0.3 g Potassium bromide 2.5 g Potassium carbonate 7.0 g Potassium hydroxide 35.0 g Add water to 1000 ml And pH = 11.75 The results obtained are shown in Table 2. As an index indicating the contrast of the image, a point at a density of fog + 3.0 was connected to a point at a density of fog + 3.0 by a straight line from a point at a density of fog + 0.3 on the characteristic curve, and the slope of this straight line was represented as a γ value. The relative sensitivity was expressed by setting the relative value of the reciprocal of the exposure amount giving a density of 1.5 with Sample 1 being 100.

[0038]

[Table 2]

From the results of Table 2, Samples 2 to 11 of the present invention
Indicates that the relative sensitivity and the γ value are high.

[0040]

The silver halide photographic light-sensitive material containing the general formula (I) of the present invention has a high γ value and high sensitivity,
By using the silver halide photographic light-sensitive material of the present invention, a super-high contrast image can be formed.

Claims (2)

[Claims] 1. A silver halide photographic light-sensitive material having at least one silver halide emulsion layer and at least one other hydrophilic colloid layer on a support, the silver halide emulsion layer and / or the other hydrophilic layer. Silver halide photographic light-sensitive material, wherein the functional colloid layer contains at least one compound represented by the following general formula (I). In formula (I) R ₁ -NHNHCOCONHNHCO-R ₂ formula, R ₁ represents an aryl group or a heterocyclic group, R ₂ is a hydrogen atom, a trifluoromethyl group, an aryl group which may have a substituent, It represents a heterocyclic group, an alkyl group, an aryloxy group, an alkoxy group or a heterocyclic oxy group. 2. A method for forming an image, which comprises treating the silver halide photographic light-sensitive material according to claim 1 with an aqueous alkaline developer.