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EP0393711B1 - Photographische Silberhalogenidmaterialien - Google Patents

Photographische Silberhalogenidmaterialien Download PDF

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Publication number
EP0393711B1
EP0393711B1 EP90107561A EP90107561A EP0393711B1 EP 0393711 B1 EP0393711 B1 EP 0393711B1 EP 90107561 A EP90107561 A EP 90107561A EP 90107561 A EP90107561 A EP 90107561A EP 0393711 B1 EP0393711 B1 EP 0393711B1
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EP
European Patent Office
Prior art keywords
group
thione
silver halide
photographic material
compound
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Expired - Lifetime
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EP90107561A
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English (en)
French (fr)
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EP0393711A3 (de
EP0393711A2 (de
Inventor
Hisashi Okamura
Hiroshi Kawamoto
Kazuhiko Matsumoto
Kazunobu Katoh
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Fujifilm Holdings Corp
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Fuji Photo Film Co Ltd
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Publication of EP0393711A3 publication Critical patent/EP0393711A3/de
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/061—Hydrazine compounds

Definitions

  • This invention relates to a silver halide photographic material and, more particularly, to a silver halide photographic material which provides a negative image having high contrast, high sensitivity, and satisfactory dot image quality.
  • originals in line work comprise photo-composed letters, hand-written letters, illustrations and dot prints and thus contain images having different densities and line widths.
  • a process camera a photographic light-sensitive material and an image formation system which would enable one to reproduce an original with high fidelity.
  • enlargement or reduction of a dot print is often required.
  • the line number per inch is reduced and the dots are blurred.
  • the line number per inch increases, and the dots become finer. Accordingly, there has been a demand for an image formation system having a broader latitude to maintain reproducibility of halftone gradation.
  • a halogen lamp or a xenon lamp is employed as a light source for a process camera.
  • photographic materials are usually subjected to orthochromatic sensitization.
  • orthochromatic materials are susceptible to influences of chromatic aberration of a lens and thus likely to suffer from deterioration of image quality. The deterioration is conspicuous when a xenon lamp is the light source.
  • lith silver halide light-sensitive material comprising silver chlorobromide (containing at least 50% of silver chloride) is processed with a hydroquinone developer having an extremely low sulfite ion effective concentration (usually 0.1 mol/l or less).
  • a line or dot image is thereby obtained having high contrast and high density in which image areas and non-image areas are clearly distinguishable.
  • development is extremely unstable because of air oxidation due to the low sulfite concentration of the developer.
  • various efforts and devices are required to stabilize the developing activity and, also, the processing speed is quite low, reducing work efficiency.
  • This material exhibits satisfactory preservation stability to form an ultrahigh contrast negative image having a gamma exceeding 10 as disclosed in US-A-4,166,742, 4,168,977, 4,221,857, 4,224,401, 4,243,739, 4,272,606, and 4,311,781.
  • This new image formation system is characterized in that silver iodobromide and silver chloroiodobromide as well as silver chlorobromide are applicable thereto, whereas the conventional ultrahigh contrast image formation systems are applicable only to photographic materials comprising silver chlorobromide of a high silver chloride content.
  • JP-A-61-213847 a method of using a redox compound having a carbonyl group which is capable of imagewise releasing a developing inhibitor has been suggested as disclosed, e.g., in JP-A-61-213847 (the term "JP-A” as used herein means an "unexamined published Japanese patent application”).
  • JP-A as used herein means an "unexamined published Japanese patent application”
  • a light-sensitive material is therefore needed which, when developed with a stable developer, provides a high contrast dot image whose tone is broadly controllable.
  • light-sensitive material for a bright room means a light-sensitive material which can be safely handled for a long time with a safe light which includes no ultraviolet light component and has a wavelength of substantially 400 nm or more.
  • a light-sensitive material for a bright room which can be used in a lay-out process and dot-do-dot work may be exposed to light while in intimate contact with a developed film having a letter or dot image (original) to effect negative-positive conversion or positive-positive conversion.
  • the material must achieve negative-positive conversion of a dot image or a line or letter image according to the dot area or the line or letter image width of the original. Further, dot image tone or line or letter width must be controllable.
  • Light-sensitive materials for bright room contact work which meet these requirements have been supplied.
  • the resulting white letter image has poor quality as compared to that obtained by the technique comprising dark room dot-to-dot work using a conventional light-sensitive material for dark room contact work.
  • a film (2) having a letter or line image shown in black (line original) and a film (4) having a dot image shown in black (dot original ) are adhered to transparent or semi-transparent bases (1) and (3), respectively.
  • Bases (3) and (4) usually are polyethylene terephthalate films having a thickness of about 100 ⁇ m.
  • the line original and the dot original are superposed on each other to make an original.
  • the emulsion layer (shaded part) of a light-sensitive material (5) for dot-to-dot work is brought into contact with the dot original (4) and exposed to light. The exposed light-sensitive material is then subjected to development to form a white line image within a dot image.
  • the negative-positive conversion should be conducted precisely according to the dot area of the dot original and the line width of the line original.
  • the dot original (4) is in intimate contact with the emulsion layer of the light-sensitive material (5).
  • line original (2) is not directly superposed on light-sensitive material (5), but base (3) and dot original (4) are interposed therebetween. Therefore, when material (5) is exposed to light at an exposure amount sufficient to effect negative-positive conversion faithfully to the dot original, the exposure through the line original is through base (3) and dot original (4), causing a reduction of the line width of the transparent line image. This causes deterioration of the super-imposed letter image quality.
  • One object of the present invention is to provide a photographic light-sensitive material having a broad exposure latitude in line image formation, an ultrahigh contrast (particularly having a gamma of 10 or more), and a high resolving power.
  • Another object of the present invention is to provide an ultrahigh contrast photographic light-sensitive material which satisfactorily reproduces a line image with a high background density (D max ).
  • a further object of the present invention is to provide an ultrahigh contrast photographic light-sensitive material having a broad exposure latitude in dot image formation and providing excellent dots having a high density, a sharp outline, and a uniform shape.
  • a silver halide photographic material containing a compound represented by formula (I): wherein R represents an aliphatic group, an aromatic group, or a heterocyclic group; and Z represents an atomic group necessary to form a nitrogen-containing heterocyclic aromatic group, said heterocyclic ring being selected from the group consisting of pyrrole, imidazole, pyrazole, 1,2,3-triazole, 1,2,4-triazole, benzotriazole, tetrazole, thiazoline-2-thione, thiazoline-2-one, oxazoline-2-thione, 2-oxazoline-5-thione, 1,2-thiazoline-5-thione, 1,2-oxazoline-5-one, 1,2-thiazoline-5-one, tetrazoline-2-thione, 1,3,4-thiadiazoline-2-thione, 1,3,4-thiadiazoline-2-one, 1,3,4-oxadiazoline-2-thione, 1,3,4-oxadiazoline-2-thione, 1,3,
  • the figure illustrates a structure at the time of exposure during the formation of a super-imposed letter image by the contact work.
  • the aliphatic group represented by R includes a straight chain, a branched or cyclic alkyl, an alkenyl or an alkynyl group.
  • the aromatic group represented by R includes a monocyclic or a bicyclic aryl group, e.g., phenyl and naphthyl groups.
  • the heterocyclic group (heterocyclic ring) represented by R includes a saturated or unsaturated 3- to 10-membered hetero ring containing at least one nitrogen, oxygen or sulfur atom.
  • the hetero ring may be monocyclic or may form a condensed ring with other aromatic or heterocyclic rings.
  • the hetero ring preferably includes a 5- or 6-membered aromatic heterocyclic group, e.g., those containing a pyridyl group, an imidazolyl group, a quinolinyl group, a benzimidazolyl group, a pyrimidyl group, a pyrazolyl group, an isoquinolinyl group, a thiazolyl group, or a benzthiazolyl group.
  • R is an aromatic group
  • R may have a substituent.
  • suitable substituents for R include an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, an alkoxyl group, an aryl group, a substituted amino, an aryloxy group, a sulfamoyl group, a carbamoyl group, an alkylthio group, an arylthio group, a sulfonyl group, a sulfinyl group, a hydroxyl group, a halogen atom, a cyano group, a sulfo group, a carboxyl group, an alkyloxycarbonyl group, an aryloxycarbonyl group, an acyl group, an alkoxycarbonyl group, an acyloxy group, a carbonamido group, a sulfonamido group, a nitro group, and a group represented by formula (II): wherein Y represents
  • R may comprise one or more of the groups represented by formula (II).
  • the aliphatic group represented by R 1 includes a straight chain, branched or cyclic alkyl, alkenyl or alkynyl group.
  • the aromatic group represented by R 1 includes a monocyclic or bicyclic aryl group, e.g., phenyl and naphthyl groups.
  • the heterocyclic group represented by R 1 includes a saturated or unsaturated 3- to 10-membered hetero ring containing at least one nitrogen, oxygen or sulfur atom.
  • the hetero ring may be monocyclic or may form a condensed ring with other aromatic or heterocyclic rings.
  • the hetero ring preferably includes a 5- or 6-membered aromatic heterocyclic group, e.g., those containing a pyridyl group, an imidazolyl group, a quinolinyl group, a benzimidazolyl group, a pyrimidyl group, a pyrazolyl group, an isoquinolinyl group, a thiazolyl group, or a benzthiazolyl group.
  • R 1 may have a substituent.
  • suitable substituents for R 1 include an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, an alkoxyl group, an aryl group, a substituted amino, an acylamino group, a sulfonylamino group, a ureido group, a urethane group, an aryloxy group, a sulfamoyl group, a carbamoyl group, an alkylthio group, an arylthio group, a sulfonyl group, a sulfinyl group, a hydroxyl group, a halogen atom, a cyano group, a sulfo group, a carboxyl group, an alkyloxycarbonyl group, an aryloxycarbonyl group, an acyl group, an alkoxycarbonyl group, an acyloxy group, a carbon
  • the aliphatic group represented by R 2 includes a straight chain, branched or cyclic alkyl, alkenyl or alkynyl group.
  • the aromatic group represented by R 2 includes a monocyclic or bicyclic aryl group, e.g., a phenyl group.
  • R 2 may have a substituent, such as those mentioned as the substituent of R 1 .
  • R 1 and R 2 may be taken together, if possible, to form a ring.
  • R 2 preferably represents a hydrogen atom.
  • Y preferably represents or -SO 2 -.
  • L preferably represents a single bond
  • the aliphatic group represented by R 4 includes a straight chain, branched or cyclic alkyl, alkenyl or alkynyl group.
  • the aromatic group represented by R 4 includes a monocyclic or bicyclic aryl group, e.g., a phenyl group.
  • R 4 may have a substituent, such as those mentioned as the substituent of R 1 .
  • R 4 preferably represents a hydrogen atom.
  • R in formula (I) may have a substituent containing a group which accelerates adsorption onto silver halide (hereinafter referred to as an adsorption accelerating group).
  • the adsorption accelerating group with which R may be substituted is represented by formula X(L') t , wherein X represents an adsorption accelerating group; L' represents a divalent linking group; and t represents 0 or 1.
  • Suitable adsorption accelerating groups represented by X include a thioamido group, a mercapto group, a group having a disulfide linkage, and a 5- or 6-membered nitrogen-containing heterocyclic group.
  • the thioamido adsorption accelerating group represented by X is a divalent group represented by which may be a part of a cyclic structure or may be an acyclic thioamido group.
  • Useful thioamido adsorption accelerating groups can be selected from those disclosed in US-A-4,030,925, 4,031,127, 4,080,207, 4,245,037, 4,255,511, 4,266,013, and 4,276,364, and Research Disclosure, Vol. 151, No. 15162 (Nov., 1976) and ibid , Vol. 176, No. 17626 (Dec., 1978).
  • acyclic thioamido groups are thioureido, thiourethane and dithiocarbamic ester groups.
  • cyclic thioamido groups are 4-thiazoline-2-thione, 4-imidazoline-2-thione, 2-thiohydantoin, rhodanine, thiobarbituric acid, tetrazoline-5-thione, 1,2,4-triazoline-3-thione, 1,3,4-thiadiazoline-2-thione, 1,3,4-oxadiazoline-2-thione, benzimidazoline-2-thione, benzoxazoline-2-thione, and benzothiazoline-2-thione. These groups may further be substituted.
  • the mercapto group represented by X includes an aliphatic mercapto group, an aromatic mercapto group, and a heterocyclic mercapto group.
  • a heterocyclic mercapto group wherein the carbon atom to which -SH is bonded is adjacent to a nitrogen atom is the same as a cyclic thioamido group, being a tautomeric isomer of such a heterocyclic mercapto group.
  • Specific examples of such a group are the same as those mentioned above with respect to the cyclic thioamido group.
  • the 5- or 6-membered nitrogen-containing heterocyclic group represented by X includes those composed of at least one carbon atom and at least one atom selected from nitrogen, oxygen, sulfur atoms.
  • Examples of preferred groups are benzotriazole, triazole, tetrazole, indazole, benzimidazole, imidazole, benzothiazole, thiazole, benzoxazole, oxazole, thiadiazole, oxadiazole, and triazine. These groups may further be substituted with an appropriate substituent. Substituents include those mentioned with respect to the substituents of R.
  • Preferred among the groups represented by X are a cyclic thioamido group (i.e., a mercapto-substituted nitrogen-containing heterocyclic group, e.g., 2-mercaptothiadiazole, 3-mercapto-1,2,4-triazole, 5-mercaptotetrazole, 2-mercapto-1,3,4-oxadiazole, and 2-mercaptobenzoxazole groups) and a nitrogen-containing heterocyclic group (e.g., benzotriazole, benzimidazole, and indazole groups).
  • a cyclic thioamido group i.e., a mercapto-substituted nitrogen-containing heterocyclic group, e.g., 2-mercaptothiadiazole, 3-mercapto-1,2,4-triazole, 5-mercaptotetrazole, 2-mercapto-1,3,4-oxadiazole, and 2-mercaptobenzoxazole groups
  • X(L') t may have two or more substituents which may be the same or different.
  • the divalent linking group as represented by L' is an atom or atom group containing at least one of carbon, nitrogen, sulfur, and oxygen atoms.
  • linking group L' are -CONH-, -NHCONH-, -SO 2 NH-, -COO-, -NHCOO-,
  • These divalent groups may further have a substituent selected from those mentioned with respect to the substituents of R.
  • R may further contain a ballast group commonly employed in immobile photographic additives, such as couplers.
  • a ballast group is an organic group which has a molecular weight sufficient to substantially prevent the compound represented by formula (I) from diffusing into other layers or processing solutions. It comprises at least one of an alkyl group, an aryl group, a heterocyclic group, an ether group, a thioether group, an amido group, a ureido group, a urethane group and a sulfonamido group.
  • Preferred ballast groups are those having a substituted benzene ring, and more preferably those having a benzene ring substituted with a branched alkyl group.
  • the heterocyclic aromatic group represented by is preferably a substituted or unsubstituted 5- or 6-membered ring, either monocyclic or fused to other rings.
  • Typical examples of preferred heterocyclic aromatic rings include, for example, pyrrole, imidazole, pyrazole, 1,2,3-triazole, 1,2,4-triazole, tetrazole, thiazoline-2-thione, thiazoline-2-one, oxazoline-2-thione, oxazoline-2-one, amidazoline-2-thione, imidazoline-2-one, 1,2-oxazoline-5-thione, 1,2-thiazoline-5-thione, 1,2-oxazoline-5-one, 1,2-thiozoline-5-one, tetrazoline-5-thione, 1,3,4-thiadiazoline-2-thione, 1,3,4-thiadiazoline-3-one, 1,3,4-oxadiazoline-2-thione, 1,3,4-oxadiazoline-2-one, 1,2,4-triazoline-3-thione, dihydropyridine-2-thione, dihydropyridine-2-one, dihydropyridine-4-thione, dihydropyridine
  • heterocyclic aromatic rings include, pyrrole, imidazole, pyrazole, triazole, tetrazole, thiazoline-2-thione, oxazoline-2-thione, indole, indazole, benzimidazole, 1,3,4-thiadiazoline-2-thione, azaindene, tetrazoline-5-thione, 1,3,4-oxadiazoline-2-thione, 1,2,4-triazoline-3-thione, and condensed rings at various condensing positions such as pyrazolopyridines and pyrazoloimidazoles.
  • Most preferred examples of the heterocyclic aromatic rings include a ring containing pyrazole nucleus such as pyrazole, indazole, and pyrazolopyridine.
  • These heterocyclic groups may have a substituent.
  • Suitable substituents include a mercapto group, a nitro group, a carboxyl group, a sulfo group, a phosphono group, a hydroxyl group, an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, an aryl group, an alkoxyl group, an aryloxy group, an amino group, an acylamino group, a sulfonylamino group, a ureido group, a urethane group, a sulfamoyl group, a carbamoyl group, an alkylthio group, an arylthio group, a sulfonyl group, a sulfinyl group, a halogen atom, a cyano group, an aryloxycarbonyl group, an acyl group, an alkoxycarbonyl group
  • the compounds of formula (I) according to the present invention can be synthesized by reacting a compound of formula (IV) and a corresponding bydrazine compound of formula (V), generally, in an aprotic solvent (e.g., tetrahydrofuran, dimethylformamide, dimethyl sulfoxide, acetonitrile) according to the reaction scheme shown below: wherein Z and R are as defined above.
  • an aprotic solvent e.g., tetrahydrofuran, dimethylformamide, dimethyl sulfoxide, acetonitrile
  • the compound of formula (IV) can be prepared by reacting a compound of formula with trichloromethyl chloroformate in the presence of a base.
  • a compound of formula or (wherein Z is as defined above) can be used instead of the compound of formula (IV).
  • the hydrazine compounds of formula (V) are commercially available or can be generally prepared by acid hydrolysis of a corresponding known formylhydrazine compound. Also, the compounds of formula (V) can be effectively prepared by forming a protected hydrazine using a carbobenzoxy group (CBZ group) or a t-butoxycarbonyl group (Boc group) as a protective group for hydrazine and removing the protective group according to a conventional method well known in the field of peptide chemistry.
  • CBZ group carbobenzoxy group
  • Boc group t-butoxycarbonyl group
  • the compound of formula (I) is incorporated into a photographic emulsion layer or a hydrophilic colloidal layer by dissolving the compound in water or a water-miscible organic solvent (if desired, an alkali hydroxide or a tertiary amine may be added to form a salt) and adding the solution to a hydrophilic colloid solution (e.g., a silver halide emulsion and a gelatin aqueous solution). If desired, the pH of the resulting mixture may be adjusted by addition of an acid or an alkali.
  • the compounds of formula (I) can be used either individually or in a combination of two or more thereof.
  • the amount to be added is selected appropriately depending on the properties of a silver halide emulsion with which it is to be combined, preferably ranging from 1 x 10 -5 to 5 x 10 -2 mol, more preferably from 2 x 10 -5 to 1 x 10 -2 mol, per mol of silver halide.
  • R 31 represents an aliphatic group or an aromatic group
  • R 32 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a carbamoyl group, or an oxycarbonyl group
  • G 1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, a group, or an iminomethylene group
  • a 1 and A 2 each represents a hydrogen atom, or one of A 1 and A 2 represents a hydrogen atom and the other represent a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group, or a substituted or unsubstituted acyl group.
  • the aliphatic group represented by R 31 preferably includes those containing from 1 to 30 carbon atoms, and more preferably a straight chain, branched or cyclic alkyl group having from 1 to 20 carbon atoms.
  • the branched alkyl group may be cyclized to form a saturated heterocyclic ring containing at least one hetero atom.
  • the alkyl group may be substituted with an aryl group, an alkoxy group, a sulfoxy group, a sulfonamido group and a carbonamido group.
  • the aromatic group represented by R 31 is a monocyclic or bicyclic aryl group or an unsaturated heterocyclic group.
  • the unsaturated heterocyclic group may be condensed with a monocyclic or bicyclic aryl group to form a heteroaryl group.
  • the aromatic group include a benzene ring, a naphthalene ring, a pyridine ring, a pyrimidine ring, an imidazole ring, a pyrazole ring, a quinoline ring, an isoquinoline ring, a benzimidazole ring, a thiazole ring, and a benzothiazole ring, with those containing a benzene ring being particularly preferred.
  • R 31 preferably represents an aryl group.
  • the aryl group or unsaturated heterocyclic group represented by R 31 may have a substituent typically including an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, an alkoxyl group, an aryl group, a substituted amino group, an acylamino group, a sulfonylamino group, a ureido group, a urethane group, an aryloxy group, a sulfamoyl group, a carbamoyl group, an alkylthio group, an arylthio group, a sulfonyl group, a sulfinyl group, a hydroxyl group, a halogen atom, a cyano group, a sulfo group, an alkyloxycarbonyl group, an aryloxycarbonyl group, an acyl group, an alkoxycarbonyl group, an acyloxy group, a carbon
  • substituents are a straight chain, branched or cyclic alkyl group (more preferably, having from 1 to 20 carbon atoms), an aralkyl group (more'preferably a monocyclic or bicyclic group having from 1 to 3 carbon atoms in the alkyl moiety thereof), an alkoxyl group (more preferably, having from 1 to 20 carbon atoms), a substituted amino group (more preferably, an amino group substituted with an alkyl group having from 1 to 20 carbon atoms), an acylamino group (more preferably, having from 2 to 30 carbon atoms), a sulfonamido group (more preferably, having from 1 to 30 carbon atoms), a ureido group (more preferably, having from 1 to 30 carbon atoms), and a phosphoric acid amide group (more preferably having from 1 to 30 carbon atoms).
  • the alkyl group represented by R 32 in formula (III) preferably contains from 1 to 4 carbon atoms and may have a substituent, e.g., a halogen atom, a cyano group, a carboxyl group, a sulfo group, an alkoxyl group, a phenyl group, or a sulfonyl group.
  • a substituent e.g., a halogen atom, a cyano group, a carboxyl group, a sulfo group, an alkoxyl group, a phenyl group, or a sulfonyl group.
  • the aryl group represented by R 32 preferably includes a monocyclic or bicyclic aryl group, such as those containing a benzene ring.
  • the aryl group may have a substituent, e.g., a halogen atom, an alkyl group, a cyano group, a carboxyl group, a sulfo group, or a sulfonyl group.
  • the alkoxy group represented by R 32 preferably contains from 1 to 8 carbon atoms and may be substituted with a halogen atom or an aryl group.
  • the aryloxy group represented by R 32 is preferably monocyclic and may be substituted with a halogen atom.
  • the amino group represented by R 32 may be substituted with an alkyl group, a halogen atom, a cyano group, a nitro group, a carboxyl group, etc.
  • Preferred among the amino groups are an unsubstituted amino group, an alkylamino group having from 1 to 10 carbon atoms, and an arylamino group.
  • the carbamoyl group represented by R 32 may be substituted with an alkyl group, a halogen atom, a cyano group, or a carboxyl group.
  • Preferred among the carbamoyl groups are an unsubstituted carbamoyl group, an alkylcarbamoyl group having from 1 to 10 carbon atoms, and an arylcarbamoyl group.
  • the oxycarbonyl group represented by R 32 preferably includes an alkoxycarbonyl group having from 1 to 10 carbon atoms and an aryloxycarbonyl group.
  • the hydroxycarbonyl group may be substituted with an alkyl group, a halogen atom, a cyano group, a nitro group, etc.
  • R 32 preferably represents a hydrogen atom, an alkyl group (e.g., methyl, trifluoromethyl, 3-hydroxypropyl, 3-methanesulfonamidopropyl, and phenylsulfonylmethyl), an aralkyl group (e.g., o-hydroxybenzyl), or an aryl group (e.g., phenyl, 3,5-dichlorophenyl, o-methanesulfonamidophenyl, and 4-methanesulfonylphenyl), and more preferably a hydrogen atom.
  • an alkyl group e.g., methyl, trifluoromethyl, 3-hydroxypropyl, 3-methanesulfonamidopropyl, and phenylsulfonylmethyl
  • an aralkyl group e.g., o-hydroxybenzyl
  • an aryl group e.g., phenyl, 3,5-dich
  • R 32 preferably represents an alkyl group (e.g., methyl), an aralkyl group (e.g., o-hydroxyphenylmethyl), an aryl group (e.g., phenyl), or a substituted amino group (e.g., dimethylamino).
  • R 32 preferably represents a cyanobenzyl group or a methylthiobenzyl group.
  • G 1 is R 32 preferably represents a methoxy group, an ethoxy group, a butoxy group, a phenoxy group, or a phenyl group, and more preferably a phenoxy group.
  • R 32 preferably represents a methyl group, an ethyl group, or a substituted or unsubstituted phenyl group.
  • G 1 preferably represents a carbonyl group.
  • R 32 may be a group which makes the G 1 -R 32 moiety split off from the remainder of formula (III) to induce cyclization producing a cyclic structure containing the -G 1 -R 32 moiety. More specifically, this separation is effected by a cleaving agent represented by formula (a): -R 33 - Z 31 wherein Z 31 represents a group which nucleophilically attacks G 1 to split the G 1 -R 33 -Z 31 moiety from the remainder of formula (a); R 33 represents a group obtained by removing one hydrogen atom from R 32 ; and R 33 and Z 31 form a cyclic structure together with G 1 upon nucleophilic attack of Z 31 on G 1 .
  • a cleaving agent represented by formula (a): -R 33 - Z 31 wherein Z 31 represents a group which nucleophilically attacks G 1 to split the G 1 -R 33 -Z 31 moiety from the remainder of formula (a); R 33 represents a group obtained by removing one hydrogen atom from R
  • the Z 31 group includes a functional group capable of directly reacting with G 1 , e.g., OH, SH, NHR 34 (wherein R 34 represents a hydrogen atom, an alkyl group, an aryl group, -COR 35 , or -SO 2 R 35 , wherein R 35 represents a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, etc.), -COOH (these functional groups may be temporarily protected so as to release the functional group upon hydrolysis with an alkali, etc.), or a functional group which becomes capable of reacting with G 1 on reacting with a nucleophilic agent (e.g., a hydroxide ion and a sulfite ion), such as and (wherein R 36 and R 37 each represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, or a heterocyclic group).
  • a nucleophilic agent e.g., a hydroxide
  • the ring formed by G 1 , R 33 , and Z 31 is preferably a 5- or 6-membered ring.
  • R b 1 , R b 2 , R b 3 , and R b 4 which may be the same or different, each represents a hydrogen atom, an alkyl group (preferably having from 1 to 12 carbon atoms), an alkenyl group (preferably having from 2 to 12 carbon atoms) and, an aryl group (preferably having from 6 to 12 carbon atoms).
  • B represents an atom group necessary to form a substituted or unsubstituted 5- or 6-membered ring; m and n each represents 0 or 1; and (n+m) is 1 or 2.
  • the 5- or 6-membered ring formed by B includes a cyclohexene, cycloheptene, benzene, naphthalene, pyridine, or quinoline ring.
  • Formula (c) is shown below: wherein Z 31 is as defined above; R c 1 and R c 2 , which may be the same or different, each represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, a halogen atom, etc.; R c 3 represents a hydrogen atom, an alkyl group, an alkenyl group, or an aryl group; p represents 0 or 1; q represents an integer of from 1 to 4; R c 1 , R c 2 , and R c 3 may be taken together to form a ring provided that Z 31 is capable of intramolecular nucleophilic attack on G 1 .
  • R c 1 and R c 2 each preferably represents a hydrogen atom, a halogen atom, or an alkyl group
  • R c 3 preferably represents an alkyl group or an aryl group.
  • q preferably represents an integer of from 1 to 3.
  • p represents 1; when q is 2, p represents 0 or 1; when q is 3, p represents 0 or 1; and when q is 2 or 3, the CR c 1 R c 2 moieties may be the same or different.
  • a 1 and A 2 each represents a hydrogen atom, an alkylsulfonyl or arylsulfonyl group having not more than 20 carbon atoms (preferably a phenylsulfonyl group or a phenylsulfonyl group which is substituted so that the sum of the Hammett's ⁇ values is -0.5 or more), an acyl group having not more than 20 carbon atoms (preferably a benzoyl group, which is substituted so that the sum of the Hammett substituent group constants ( ⁇ values) is -0.5 or more), or a straight chain, branched or cyclic substituted or unsubstituted aliphatic acyl group (the substituent includes a halogen atom, an ether group, a sulfonamido group, a carbonamido group, a hydroxyl group, a carboxyl group, and a sulfo group)).
  • a 1 and A 2 each preferably represents a hydrogen atom.
  • R 31 or R 32 in formula (III) may contain a ballast group commonly employed in immobile photographic additives such as couplers.
  • a ballast group is a group which contains at least 8 carbon atoms and is relatively inert to photographic characteristics. Suitable ballast groups are selected from an alkyl group, an alkoxyl group, a phenyl group, an alkylphenyl group, a phenoxy group and an alkylphenoxy group.
  • R 31 or R 32 may further contain a group which accelerates adsorption to silver halide grain.
  • a group which accelerates adsorption to silver halide grain examples include a group which accelerates adsorption to silver halide grain. Examples of such an adsorption accelerating group are described in US-A-4,385,108 and 4,459,347, JP-A-59-195233, JP-A-59-200231, JP-A-59-201045, JP-A-59-201046, JP-A-59-201047, JP-A-59-201048, JP-A-59-201049, JP-A-61-170733, JP-A-61-270744, JP-A-62-948, and Japanese Patent Application Nos. 62-67508, 62-67501 and 62-67510, including a thiourea group, a heterocyclic thioamido group, a mercapto heterocyclic group, and a triazole
  • the compound of formula (I) and the hydrazine compound of formula (III) can be incorporated into the same layer or different layers.
  • the hydrazine compound represented by formula (III) is preferably incorporated into silver halide emulsion layer(s), but can be incorporated into other non-light sensitive hydrophilic colloid layers (e.g., a protecting layer, an intermediate layer, a filter layer and an anti-halation layer). More specifically, when the hydrazine compound is water-soluble, an aqueous solution of the hydrazine compound or, when the hydrazine compound is difficultly soluble in water, a solution of the hydrazine compound in a water-miscible organic solvent such as alcohols, esters and ketones, can be added to hydrophilic colloid layers.
  • a water-miscible organic solvent such as alcohols, esters and ketones
  • the solution of hydrazine compound When the solution of hydrazine compound is added to a silver halide emulsion layer, it may be added at any time between the initial stage of chemical ripening and the coating of the emulsion, but it is preferably added to the emulsion after completion of the chemical ripening and prior to the coating. In particular, it is most preferable to add the compound to a coating composition prepared for coating.
  • the optimum amount of the compound represented by formula (III) to be used is selected depending upon the grain size of the silver halide emulsion, the halogen composition, the method and the degree of chemical sensitization, the relationship between the layer in which the compound is incorporated and the silver halide emulsin layers, the type of antifoggant used. Test methods for selecting the optimum amount of the compound are well known in the art.
  • the compound of formula (III) can be preferably used in an amount ranging from 1 ⁇ 10 -6 to 1 ⁇ 10 -4 mol, more preferably from 1 ⁇ 10 -5 to 4 ⁇ 10 -2 mol, per mol of the silver halide.
  • the compound of formula (I) used in the present invention can also be combined with other known hydrazine compounds.
  • Examples of usable hydrazine compounds are described in Research Disclosure, Item 23516, p.
  • the compound of formula (I) When combined with the hydrazine compound of formula (III) and a negatively working emulsion, the compound of formula (I) provides a negative image of high contrast.
  • the compound of formula (I) of the present invention may be used in combination with an internal latent image type silver halide emulsion. It is preferable to take advantage of a combination of the compound of formula (I) with the hydrazine compound of formula (III) and a negatively working emulsion in obtaining a negative image of high contrast.
  • fine silver halide grains having a mean grain size of 0.7 ⁇ m or less and particularly 0.5 ⁇ m or less are preferably employed. Grain size distribution is not essentially limited, but a mono-dispersion is preferred.
  • the terminology "monodispersion” means a dispersion in which at least 95% by weight or number of grains fall within a size range of ⁇ 40% of a mean grain size.
  • the silver halide grains which can be used in the practice of the present invention to provide a photographic emulsion may have a regular crystal form, such as an octahedral form, a rhombic dodecahedral form, and a tetradecahedral form; or an irregular crystal form, such as a spherical form and a plate-like form; or a composite form of these crystal forms.
  • Individual silver halide grains may have a uniform phase therethrough or different phases between the inside and the surface layer thereof.
  • a cadmium salt, a sulfite salt, a lead salt, a thallium salt, a rhodium salt or a complex thereof, an iridium salt or a complex thereof may be present in the system.
  • the silver halide emulsion used in the present invention can be any of silver chloride, silver bromide, silver iodobromide and silver iodochlorobromide emulsions.
  • the silver halide emulsion which can be used in the present invention may or may not be chemically sensitized.
  • Chemical sensitization of silver halide emulsions can be carried out by any of the known techniques, such as sulfur sensitization, reduction sensitization, and noble metal sensitization, either alone or in combination thereof.
  • noble metal sensitization techniques typical is gold sensitization using a gold compound, usually a gold complex.
  • Complexes of noble metals other than gold, e.g., platinum, palladium and rhodium, may also be employed. Specific examples of these noble metal compounds are described in US-A-2,448,060 and GB-B-618,016.
  • Sulfur sensitization is effected by using a sulfur compound contained in gelatin as well as various sulfur compounds, e.g., thiosulfates, thioureas, thiazoles, and rhodanines.
  • silver halide emulsion preparation it is preferable to add an iridium salt or a rhodium salt before completion of physical ripening, particularly during grain formation.
  • a silver halide emulsion layer of the light-sensitive material according to the present invention preferably contains two mono-dispersed emulsions differing in mean grain size as taught in JP-A-61-223734 and JP-A-62-90646.
  • the mono-dispersed grains of smaller size is preferably chemically sensitized, more preferably sulfur sensitized.
  • the mono-dispersed grains of larger size may or may not be chemically sensitized. In general, since the latter grains (larger grains) tend to cause black pepper when chemically sensitized, no chemical sensitization is conducted on the larger grains.
  • a light chemical sensitization so as not to cause black pepper.
  • Light chemical sensitization can be performed by reducing the time or temperature of chemical sensitization or the amount of chemical sensitizer which is added, as compared with the chemical sensitization of the smaller grains.
  • the difference in sensitivity between the larger size mono-dispersed emulsion and the smaller size mono-dispersed emulsion is not particularly limited, but the difference as expressed in terms of ⁇ logE is usually from 0.1 to 1.0, preferably from 0.2 to 0.7.
  • the larger size mono-dispersed emulsion preferably has a higher logE.
  • sensitivity means sensitivity of a sample prepared by coating each emulsion containing the hydrazine compound on a support and processing the coated material with a developer having a pH of from 10.5 to 12.3 and containing at least 0.15 mol/l of a sulfite ion.
  • the grain size of the smaller size mono-dispersed grains is not more than 90%, preferably not more than 80%, of the mean grain size of the larger size mono-dispersed grains.
  • the mean grain size of the silver halide emulsion grains preferably is from 0.02 to 1.0 ⁇ m, and more preferably from 0.1 to 0.5 ⁇ m, and the mean grain size of each of the larger size grains and the smaller size grains is preferably within this range.
  • the smaller size mono-dispersed emulsion is preferably coated to a silver coverage of from 40 to 90% by weight, more preferably from 50 to 80% by weight, based on the total silver coverage.
  • the mono-dispersed emulsions having different grain sizes may be incorporated into the same layer or separate layers. In the latter case, it is preferable to incorporate the larger size emulsion into an upper layer, and the smaller size emulsion into a lower layer, respectively.
  • the total silver coverage preferably is from 1 to 8 g per m 2 .
  • the light-sensitive material according to the present invention can contain sensitizing dyes, such as cyanine dyes and merocyanine dyes, as described in JP-A-55-52050, pp. 45-53.
  • the sensitizing dyes may be used either individually or in combination of two or more thereof. A combination of sensitizing dyes is frequently used for supersensitization.
  • the emulsion may also contain, in addition to the sensitizing dye, a dye which has no spectral sensitization activity per se but exhibits supersensitization activity or a substance which does not substantially absorb visible light but exhibits supersensitization activity. Examples of useful sensitizing dyes, dyes exhibiting supersensitization, and substances exhibiting supersensitization are described in Research Disclosure , Vol. 176, No. 17643, p. 23, IV-J (Dec., 1978).
  • various compounds can be introduced into the light-sensitive material of the present invention.
  • Such compounds include: azoles, such as benzothiazolium salts, nitroindazoles, chlorobenzimidazoles, bromobenzimidazoles, mercaptothiazoles, mercaptobenzothiazoles, mercaptothiadiazoles, aminotriazoles, benzothiazoles, and nitrobenzotriazoles; mercaptopyrimidines; mercaptotriazines; thioketo compounds, such as oxazolinethione; azaindenes, such as triazaindenes, tetraazaindenes (especially 4-hydroxy-substituted (1,3,3a,7)-tetraazaindenes), and pentaazaindenes; benzenethiosulfonic acids, benzenesulfinic acids, benzenesulf
  • Examples of a development accelerator or a nucleation infectious development accelerator which can be suitably used in the present invention include the compounds disclosed in JP-A-53-77616, JP-A-54-37732, JP-A-53-137133, JP-A-60-140340, and JP-A-60-14959 as well as various compounds containing a nitrogen or sulfur atom.
  • These accelerators are used usually in an amount of from 1.0 x 10 -3 to 0.5 g/m 2 , and preferably from 5.0 x 10 -3 to 0.1 g/m 2 , although the optimum amount varies depending on the kind of accelerator.
  • the photographic emulsion layers or other hydrophilic colloidal layers may contain a desensitizer.
  • An organic desensitizer which can be used in the present invention is specified by its polarographic half wave potential, i.e., an oxidation-reduction potential determined by polarography. That is, it is specified to have a positive sum of a polarographic anode potential and a cathode potential. Determination of the oxidation-reduction potential by polarography is described, e.g., in US-A-3,501,307. Organic desensitizers containing at least one water-soluble group, e.g., a sulfo group and a carboxyl group, are preferred.
  • the water-soluble group may be in the form of a salt with an organic base, e.g., ammonia, pyridine, triethylamine, piperidine, and morpholine, or an alkali metal, e.g., sodium and potassium.
  • organic base e.g., ammonia, pyridine, triethylamine, piperidine, and morpholine
  • alkali metal e.g., sodium and potassium.
  • organic desensitizers are those described in JP-A-63-133145, pp. 55-72 (especially the compounds represented by formulae (III) to (V)).
  • the organic desensitizer is added to silver halide emulsions in an amount usually of from 1.0 x 10 -8 to 1.0 x 10 -4 mol/m 2 , and preferably of from 1.0 x 10 -7 to 1.0 x 10 -5 mol/m 2 .
  • the emulsion layers or other hydrophilic colloidal layers may contain a water-soluble dye as a filter dye or for the purpose of preventing irradiation or for other purposes.
  • Filter dyes to be used are dyes for reducing photographic sensitivity, preferably ultraviolet absorbents having a spectral absorption maximum in the intrinsic sensitivity region of silver halide and dyes showing substantial light absorption in the region mainly in the range of from 380 to 600 nm which are used for improving safety against safelight in handling light-sensitive materials for bright room.
  • These dyes are preferably fixed by a mordant to an emulsion layer or a light-insensitive hydrophilic colloidal layer farther from the support than the silver halide emulsion layer, depending on the purpose.
  • the ultraviolet absorbent is usually used in an amount of from 1 x 10 -2 to 1 g/m 2 , and preferably from 50 to 500 mg/m 2 , though the amount varies somewhat depending on the absorbent's molar extinction coefficient.
  • the ultraviolet absorbent can be incorporated into a coating composition in the form of a solution in an appropriate solvent, e.g., water, an alcohol (e.g., methanol, ethanol and propanol), acetone, methyl cellosolve, or a mixture thereof.
  • an appropriate solvent e.g., water, an alcohol (e.g., methanol, ethanol and propanol), acetone, methyl cellosolve, or a mixture thereof.
  • Suitable ultraviolet absorbents which can be used include aryl-substituted benzotriazole compounds, 4-thiazolidone compounds, benzophenone compounds, cinnamic ester compounds, butadiene compounds, benzoxazole compounds, and ultraviolet absorbing polymers. Specific examples of these ultraviolet absorbents are described in US-A-3,533,794, 3,314,794, and 3,352,681, JP-A-46-2784, US-A-3,705,805, 3,707,375, 4,045,229, 3,700,455, and 3,499,762, and DE-C-1,547,863.
  • Filter dyes which can be used include oxonol dyes, hemioxonol dyes, styryl dyes, merocyanine dyes, cyanine dyes, and azo dyes. To minimize color remaining after development processing, water-soluble dyes or dyes which are discolored with an alkali or a sulfite ion are preferred.
  • filter dyes include pyrazolone oxonol dyes described in US-A-2,274,782, diarylazo dyes described in US-A-2,956,879, styryl dyes and butadienyl dyes described in US-A-3,423,207 and 3,384,487, merocyanine dyes described in US-A-2,527,583, merocyanine dyes and oxonol dyes described in US-A-3,486,897, 3,652,284, and 3,718,472, enaminohemioxonol dyes described in US-A-3,976,661, and dyes described in GB-B-584,609 and 1,177,429, JP-A-48-85130, JP-A-49-99620, JP-A-49-114420, and US-A-2,533,472, 3,148,187, 3,177,078, 3,247,127, 3,540,887, 3,575,704, and 3,
  • the dyes are added to a coating composition for a light-insensitive hydrophilic colloidal layer in the form of a solution in an appropriate solvent, e.g., water, an alcohol (e.g., methanol, ethanol, and propanol), acetone, methyl cellosolve, or a mixture thereof.
  • an appropriate solvent e.g., water, an alcohol (e.g., methanol, ethanol, and propanol), acetone, methyl cellosolve, or a mixture thereof.
  • a suitable amount of the dye to be added is usually from 1 x 10 -3 to 1 g/m 2 , and particularly from 1 x 10 -3 to 0.5 g/m 2 .
  • the photographic emulsion layers or other hydrophilic colloidal layers may contain an organic or inorganic hardening agent, such as chromates, aldehydes (e.g., formaldehyde and glutaraldehyde), N-methylol compounds (e.g., dimethylolurea), active vinyl compounds (e.g., 1,3,5-triacryloyl-hexahydro-s-triazine and 1,3-vinylsulfonyl-2-propanol), active halogen compounds (e.g., 2,4-dichloro-6-hydroxy-s-triazine), and mucohalogenic acids, either individually or in combination thereof.
  • an organic or inorganic hardening agent such as chromates, aldehydes (e.g., formaldehyde and glutaraldehyde), N-methylol compounds (e.g., dimethylolurea), active vinyl compounds (e.g., 1,3,5-triacryloyl
  • the photographic emulsion layers or other hydrophilic colloidal layers may further contain various surface active agents for the purpose of a coating aid, static charge prevention, improvement of slip properties, emulsification and dispersion aid, prevention of blocking, and improvement of photographic characteristics (e.g., acceleration of development, increase of contrast, and increase of sensitivity).
  • Surface active agents which are particularly useful in the present invention are polyalkylene oxides having a molecular weight of 600 or more as disclosed in JP-B-58-9412 (the term "JP-B" as used herein means an "examined published Japanese patent application").
  • fluorine-containing surface active agents are preferred.
  • the photographic emulsion layers or other hydrophilic colloidal layers may furthermore contain a matting agent, such as silica, magnesium oxide, and polymethyl methacrylate.
  • a matting agent such as silica, magnesium oxide, and polymethyl methacrylate.
  • the photographic emulsions can contain a dispersion of a water-insoluble or sparingly water-soluble synthetic polymer.
  • a water-insoluble or sparingly water-soluble synthetic polymer examples include homopolymers or copolymers of an alkyl (meth)acrylate, an alkoxyalkyl (meth)acrylate, and glycidyl (meth)acrylate and copolymers comprising these monomers and acrylic acid, methacrylic acid, etc.
  • the silver halide emulsion layers and other layers preferably contain a compound having an acid radical.
  • suitable acid radical-containing compounds are organic acids, e.g., salicylic acid, acetic acid, and ascorbic acid; and homopolymers or copolymers comprising an acid monomer, e.g., acrylic acid, maleic acid, and phthalic acid.
  • suitable acid radical-containing compounds are organic acids, e.g., salicylic acid, acetic acid, and ascorbic acid; and homopolymers or copolymers comprising an acid monomer, e.g., acrylic acid, maleic acid, and phthalic acid.
  • ascorbic acid as a low-molecular compound and an aqueous latex of a copolymer comprising an acid monomer (e.g., acrylic acid) and a crosslinking monomer having at least two unsaturated groups (e.g., divinylbenzene) as a high-molecular compound.
  • an acid monomer e.g., acrylic acid
  • a crosslinking monomer having at least two unsaturated groups e.g., divinylbenzene
  • the silver halide light-sensitive material of the present invention can be processed with a stable developing solution to obtain ultrahigh contrast and high sensitivity. There is no need to use conventional infectious developers or highly alkaline developers having a pH of nearly 13 as described in US-A-2,419,975.
  • a negative image having sufficiently high contrast can be obtained by processing the silver halide light-sensitive material of the present invention with a developer containing 0.15 mol/l or more of sulfite ions as a preservative and having a pH between 10.5 and 12.3, particularly between 11.0 and 12.0.
  • the developing agent which can be used in the developer is not particularly restricted.
  • the developer preferably contains dihydroxybenzenes.
  • a combination of a dihydroxybenzene and a 1-phenyl-3-pyrazolidone or a combination of a dihydroxybenzene and a p-aminophenol is sometimes employed.
  • the developing agent is preferably used in an amount of from 0.05 to 0.8 mol/l.
  • the former is preferably used in an amount of from 0.05 to 0.5 mol/l, and the latter is preferably used in an amount of not more than 0.06 mol/l.
  • Sulfites which can be used in the developer as a preservative include sodium sulfite, potassium sulfite, lithium sulfite, ammonium sulfite, sodium bisulfite, potassium metabisulfite, and formaldehyde sodium bisulfite.
  • the sulfite is preferably used in a concentration of 0.4 mol/l or higher, and particularly 0.5 mol/l or higher.
  • the developer may contain the compound disclosed in JP-A-56-24347 as a silver stain inhibitor; the compound disclosed in JP-A-61-267759 as a dissolving aid; and the compound disclosed in JP-A-60-93433 or the compound disclosed in JP-A-62-186259 as a pH buffer.
  • the compound represented by formula (I) can be used in combination with an internal latent image type silver halide emulsion as well as with a negatively working emulsion.
  • the compound of formula (I) is preferably introduced into an internal latent image type silver halide emulsion layer. It may also be introduced into a hydrophilic colloidal layer adjacent to the internal latent image type silver halide emulsion layer. Hydrophilic colloidal layers in which the compound of formula (I) can be introduced are not limited in function, provided that the nucleating agent is not inhibited from diffusing to silver halide grains. Possible layers include color material layers, intermediate layers, filter layers, protective layers, and antihalation layers.
  • the amount of the compound of formula (I) to be used varies depending on characteristics of silver halide emulsions used, the chemical structure of the nucleating agent, and conditions of development and is therefore subject to wide variation. From a practical standpoint, a useful amount is from about 0.005 mg to 500 mg, and preferably from about 0.01 to 100 mg, per mol of silver in an internal latent image type silver halide emulsion. When the compound is incorporated into a hydrophilic colloidal layer adjacent to the emulsion layer, it is used in the same amount as recited above per mol of silver contained in the same area of the internal latent image type emulsion layer.
  • the terminology "internal latent image type silver halide emulsion" as used herein is defined in JP-A-61-170733, p. 10, upper column and British Patent 2,089,057, pp. 18-20.
  • the internal latent image type emulsion may be spectrally sensitized to blue light of a relatively longer wavelength, green light, red light or infrared light by using sensitizing dyes.
  • Sensitizing dyes to be used include cyanine dyes, merocyanine dyes, complex cyanine dyes, complex merocyanine dyes, holopolar cyanine dyes, styryl dyes, hemicyanine dyes, oxonol dyes, and hemioxonol dyes. These sensitizing dyes include, for example, cyanine dyes or merocyanine dyes described in JP-A-59-40638, JP-A-59-40636, and JP-A-59-38739.
  • the light-sensitive material according to the present invention can contain dye image-forming couplers (i.e., cyan, magenta, and yellow couplers) as color materials. It is also possible to develop the light-sensitive material with a developer containing the dye image-forming couplers.
  • dye image-forming couplers i.e., cyan, magenta, and yellow couplers
  • couplers producing dyes having moderate diffusibility can also be employed.
  • colorless couplers DIR couplers capable of releasing a developing inhibitor on a coupling reaction
  • couplers capable of releasing a developing accelerator on coupling reaction can also be employed.
  • Yellow couplers which can be used in this invention typically include oil-protected acylacetamide couplers.
  • ⁇ -Pivaloylacetanilide couplers are excellent in dye stability, particularly stability to light.
  • ⁇ -benzoylacetanilide couplers provide high color densities.
  • Magenta couplers which can be used in the present invention include oil-protected type indazolone or cyanoacetyl couplers, and preferably 5-pyrazolone couplers and pyrazoloazole couplers, such as pyrazolotriazoles.
  • 5-Pyrazolone couplers having an arylamino group or an acylamino group at the 3-position are preferred in view of hue and density of developed dyes.
  • Releasable groups of 2-equivalent 5-pyrazolone couplers preferably include nitrogen-release groups described in US-A-4,310,619 and arylthio groups described in US-A-4,351,897.
  • 5-Pyrazolone couplers having a ballast group as described in EP 73,636 provide high color densities.
  • Pyrazoloazole couplers include pyrazolobenzimidazoles described in US-A-3,379,899, and preferably pyrazolo[5,1-c][1,2,4]triazoles described in US-A-3,725,067, pyrazolotetrazoles described in Research Disclosure, 24220 (Jun., 1984), and pyrazolopyrazoles described in Research Disclosure, 24230 (Jun., 1984). From the standpoint of reduced yellow side absorption and light stability of produced dyes, imidazolo[1,2-b]pyrazoles described in EP 119,741 are preferred. Pyrazolo[1,5-b][1,2,4]triazole described in EP 119,860 is particularly preferred.
  • Cyan couplers which can be used in the present invention include oil-protected naphthol and phenol couplers.
  • Typical examples of cyan couplers are naphthol couplers described in US-A-2,474,293, preferably oxygen-release 2-equivalent naphthol couplers described in US-A-4,052,212, 4,146,396, 4,228,233, and 4,296,200.
  • Examples of phenol couplers are described in US-A-2,369,929, 2,801,171, 2,772,162, and 2,895,826. Cyan couplers exhibiting stability to moisture and heat are preferably used in the present invention.
  • cyan couplers are phenol couplers having an alkyl group of 2 or more carbon atoms at the m-position of the phenolic nucleus as described in US-A-3,772,002, 2,5-diacylamino-substituted phenol couplers, and phenol couplers having a phenylureido group at the 2-position and an acylamino group at the 5-position.
  • Graininess can be improved by using couplers producing dyes having moderate diffusibility.
  • couplers producing dyes having moderate diffusibility. Examples of such couplers are described in US-A-4,366,237 and GB-B-2,125,570 (magenta couplers); EP 96,570 and DE-C-3,234,533 (yellow, magenta or cyan couplers).
  • Dye-forming couplers and the above-described special couplers may have the form of a polymer, including that of a dimer.
  • Typical examples of polymerized dye-forming couplers are described in US-A-3,451,820 and 4,080,211.
  • Specific examples of polymerized magenta coupler are described in GB-B-2,102,173 and US-A-4,367,282.
  • two or more of the above-described couplers can be incorporated into the same light-sensitive layer, or the same coupler can be introduced into two or more layers.
  • the standard amount of color couplers to be used is in the range of from 0.001 to 1 mol per mole of light-sensitive silver halide. More preferably, 0.01 to 0.5 mol of a yellow coupler, 0.003 to 0.3 mol of a magenta coupler, and 0.002 to 0.3 mol of a cyan coupler are used per mol of silver halide.
  • Developing agents such as hydroxybenzenes (e.g., hydroquinone), aminophenols, and 3-pyrazolidones, may be incorporated into the emulsions or light-sensitive materials.
  • the photographic emulsion which can be used in the present invention can also be combined with a dye image providing compound (color material) in a color diffusion transfer process which releases a diffusive dye in accordance with development of silver halide to provide a desired transferred image on an image-receiving layer.
  • a dye image providing compound color material
  • color materials for color diffusion transfer process have been proposed. Preferred among them are color materials which are non-diffusive as they are, but become capable of releasing a diffusive dye when split off during an oxidation-reduction reaction with an oxidation product of a developing agent (or an electron transfer agent) (hereinafter referred to as DRR compound), with those having an N-substituted sulfamoyl group being particularly preferred.
  • DRR compounds having an o-hydroxyarylsulfamoyl group as described in US-A-4,055,428, 4,053,312, and 4,336,322 and DRR compounds having a redox nucleus as described in JP-A-53-149328 are suitable for combination with a nucleating agent.
  • the combined use of such DRR compounds markedly reduces temperature dependence of processing performance.
  • processing of the light-sensitive material is preferably carried out by color development with a surface developer having a pH of 11.5 or lower and containing an aromatic primary amine color developing agent, either after or during light fogging or chemical fogging using a nucleating agent, followed by bleaching and fixing thereby to directly form a positive color image.
  • the developer to be used more preferably has a pH between 10.0 and 11.0.
  • Fogging can be effected by either a light fog method in which the entire area of a light-sensitive layer is subjected to a second exposure or a chemical fog method in which development processing is carried out in the presence of a nucleating agent. Development processing may be conducted in the presence of a nucleating agent and fogging light. Also, a light-sensitive material containing a nucleating agent may be subjected to fogging exposure.
  • the light fog method is described in EP-B-267482, p. 17, line 15 to p. 17, line 46.
  • Useful nucleating agents are described in ibid., p. 17, line 47 to p. 21, line 31.
  • compounds represented by formulas (N-1) and (N-2) are preferred. Specific examples of these compounds are (N-I-1) to (N-I-10) shown on p. 19 and (N-II-1) to (N-II-12) shown on p. 21 of the above European Patent.
  • Nucleation accelerators which can be used in this invention are described in ibid., p. 21, l. 48 to p. 22, l. 17. In particular, (A-1) to (A-13) on pp. 21-22 are preferred.
  • Color developers which can be used for development processing of the light-sensitive material of the invention are described in ibid., p. 22, l. 18 to p. 22, l. 29.
  • Preferred examples of the aromatic primary amine color developing agents are p-phenylenediamine compounds, typically including 3-methyl-4-amino-N-ethyl-N-( ⁇ -methanesulfonamidoethyl)aniline, 3-methyl-4-amino-N-ethyl-N-( ⁇ -hydroxyethyl)aniline,3-methyl-4-amino-N-ethyl-N-methoxyethylaniline and salts thereof (e.g., sulfate and hydrochloride).
  • black-and-white developers such as phenidone compounds, are also employable.
  • Photographic emulsion layers, after color development, are usually subjected to bleaching.
  • Bleaching may be carried out simultaneously with fixing (combined bleaching and fixing), or these two steps may be conducted separately.
  • bleaching may be followed by bleach-fix, or fixing may be followed by bleach-fix.
  • a bleaching solution or a bleach-fix solution usually contains an aminopolycarboxylic acid iron complex salt as the bleaching agent.
  • Additives which can be used in the bleaching or bleach-fix solution are described in JP-A-62-215272, pp. 20-30.
  • Desilvering (bleach-fix or fixing) is followed by washing and/or stabilizing.
  • Water which has been rendered soft is preferably used as washing water or a stabilizing solution.
  • Treatments for rendering water soft can be performed by means of an ion-exchange resin as described in JP-A-62-288838 or by a method using an apparatus for back osmosis. The method described in JP-A-62-288838 supra is particularly preferred.
  • Additives which can be used in the washing and stabilizing steps include those described in JP-A-62-215272, pp. 30-36.
  • the rate of replenishment in each processing step is preferably low. It is preferably 0.1 to 50 times, more preferably 3 to 30 times, the amount of the prebath which has been carried over per unit area of a light-sensitive material.
  • the compounds of the present invention can be used in heat-developable light-sensitive materials which are described in, for example, US-A-4,463,079, 4,474,867, 4,478,927, 4,507,380, 4,500,626, 4,483,914, JP-A-58-149048, JP-A-58-149047, JP-A-59-152440, JP-A-59-154445, JP-A-59-165054, JP-A-59-180548, JP-A-59-168439, JP-A-59-168439 JP-A-59-174832, JP-A-59-174833, JP-A-59-174834, JP-A-59-174835, JP-A-61-232451, JP-A-62-65038, JP-A-62-253159, JP-A-63-316848, JP-A-64-13546, and EP-210,660A2 and 220,746A2.
  • the heat-developable light-sensitive material basically comprises a support having provided thereon a light-sensitive silver halide, a binder, a dye-providing compound, and a reducing agent (the reducing agent may also function as a dye-providing material), and, if necessary, an organic silver salt and other additives may be incorporated therein.
  • the heat-developable light-sensitive material may be either a negative image forming material or a positive image forming material.
  • a direct-positive emulsion which includes a system using a nucleating agent and a system using a fogging agent is used as a silver halide emulsion, or a dye-providing compound which releases a positively diffusible dye-image is used.
  • the transfer of a diffusible dye can be effected by various methods. For example, methods of transfer to a dye-fixing layer using an image-forming solvent, transfer to a dye-fixing layer using a high boiling-point organic solvent, transfer to a dye-fixing layer using a hydrophilic hot solvent, and transfer to a dye-fixing layer containing a dye-receiving polymer by utilizing heat-diffusible or sublimable property of the diffusible dye have been proposed, and any of these methods can be used in the present invention.
  • the above-described image-forming solvent includes, for example, water which can be pure water as well as water usually used.
  • the solvent may be a mixture of pure water and a low boiling point solvent such as methanol, dimethylformamide, acetone, diisobutyl ketone. Further, the solvent may be a solution containing an image-formation accelerator, an antifoggant, a development-stopping agent a hydrophilic hot solvent.
  • a silver nitrate aqueous solution and a mixed aqueous solution of potassium iodide and potassium bromide were simultaneously added to a gelatin aqueous solution kept at 50°C in the presencdye and e of 4 x 10 -7 mol per mol of silver of iridium (III) chloride and ammonia while maintaining a pAg at 7.8 to prepare a cubic mono-dispersed emulsion having a mean grain size of 0.28 ⁇ m and an average silver iodide content of 0.3 mol%.
  • each of the compounds shown in Table 1 below was added to the emulsion.
  • 5-methylbenzotriazole, 4-hydroxy-1,3,3a,7-tetraazaindene, Compounds (i) and (ii) shown below, 30% by weight (based on gelatin) of polyethyl acrylate, and Compound (iii) shown below as a gelatin hardening agent were added thereto.
  • the resulting coating composition was coated on a 150 ⁇ m thick polyethylene terephthalate film having a subbing layer comprising a vinylidene chloride copolymer to a silver coverage of 3.8 g/m 2 and dried to form an emulsion layer.
  • a composition comprising 1.5 g/m 2 of gelatin, 0.3 g/m 2 of polymethyl methacrylate particles (mean particle size: 2.5 ⁇ m), and the surface active agents shown below was coated on the emulsion layer and dried to form a protective layer.
  • Each of the resulting samples was exposed to tungsten light of 3200K through an optical wedge and a contact screen ("150L Chain Dot Type", produced by Fuji Photo Film Co., Ltd.), developed with a developer having the following formulation at 34°C for 30 seconds, fixed, washed, and dried.
  • Example 1 Each of the samples prepared in Example 1 was exposed to light in the same manner as in Example 1 and developed at 34°C for 30 seconds under the following condition (A), (B) or (C) by using an automatic developing machine for plate making ("Model FG 660F” produced by Fuji Photo Film Co., Ltd.) filled with the same developer as used in Example 1, followed by fixing, washing, and drying.
  • A automatic developing machine for plate making
  • Model FG 660F produced by Fuji Photo Film Co., Ltd.
  • Photographic sensitivity of each processed sample was determined to evaluate processing running stability, and the results obtained are shown in Table 2 below. From the standpoint of running stability, it is desirable that the difference in sensitivity between processing conditions (A) and (B) or (C) be minimized. As can be seen from the results of Table 2, use of the compound according to the present invention unexpectedly improves processing running stability.
  • Air-Fatigued Developer ( ⁇ S B-A ) Large Volume Processing-Fatigued Developer ( ⁇ S C-A ) Remark 1 +0.07 -0.14 Comparison 2 +0.04 -0.08 " 3 +0.07 -0.14 " 4 +0.08 -0.15 " 5 +0.07 -0.15 " 6 +0.02 -0.07 Invention 7 +0.03 -0.06 " 8 +0.02 -0.07 " 9 +0.02 -0.05 " 10 +0.02 -0.06 " 11 +0.03 -0.07 " 12 +0.02 -0.07 " 13 +0.03 -0.07 " 14 +0.02 -0.07 " 15 +0.02 -0.07 "
  • a silver nitrate aqueous solution and a sodium chloride aqueous solution were simultaneously added to a gelatin aqueous solution kept at 50°C in the presence of 5.0 x 10 -6 mol per mol of Ag of (NH 4 ) 3 RhCl 6 .
  • gelatin was added to the emulsion. Since no chemical ripening was conducted, 2-methyl-4-hydroxy-1,3,3a,7-tetraazaindene was added thereto as a stabilizer.
  • the resulting emulsion was a cubic mono-dispersed emulsion having a mean grain size of 0.15 ⁇ m.
  • a polyethyl acrylate latex was added in an amount of 30% by weight (on solid basis) based on gelatin, and 1,3-vinylsulfonyl-2-propanol was added as a hardening agent.
  • the resulting coating composition was coated on a polyester support to a silver coverage of 3.8 g/m 2 .
  • the gelatin coverage was 1.8 g/m 2 .
  • the light-sensitive material for dot-to-dot work was exposed to light at a proper exposure so that a dot area of 50% of the original might form a dot area of 50% on the light-sensitive material.
  • the image quality was rated 5 (best quality).
  • the exposure condition being equal, only a 150 ⁇ m wide letter could be reproduced, and the image quality was rated 1 (worst quality).
  • Image quality between 5 and 1 was rated 2 to 4 according to visual observation. Quality rated 3 or higher is a level acceptable for practical use.
  • Emulsions for photographic layers a dispersion of zinc hydroxide, a dispersion of active charcoal, a dispersion of an electron-transmitting agent, dispersions of yellow, magenta and cyan couplers and a dispersion for an interlayer were prepared as described below. Then, a photographic material (Sample No. 401) was prepared using these materials as described below. Additionally, an image-receiving material was prepared, also as described below.
  • Emulsion for Blue-sensitive layer
  • the following solution (1) and solution (2) were simultaneously added to a well-stirred aqueous gelatin solution (which was prepared by adding 20 g of gelatin, 3 g of potassium bromide, 0.03 g of the following compound (1) and 0.25 g of HO(CH 2 ) 2 S(CH 2 ) 2 (CH 2 ) 2 OH to 800 cm 3 of water and heated at 50°C), over a period of 30 minutes. Thereafter, the following solution (3) and solution (4) were further added thereto at the same time over a period of 20 minutes. 5 minutes after the initiation of adding the solution (3), a dye solution described below was added over a period of 18 minutes.
  • Emulsion for Green-sensitive Layer is a Emulsion for Green-sensitive Layer
  • Emulsion for Red-sensitive Layer is a
  • a dispersion of active charcoal was prepared by adding 2.5 g of active charcoal powder (special grade, product by Wako Pure Chemical), 1 g of Demole N (product by Kao Soap Co.) as a dispersing agent, and 0.25 g of polyethylene glycol nonylphenylether to 100 cm 3 of 5% aqueous gelatin solution, and then milling for 120 minutes with glass beads having a mean grain size of 0.75 mm. After removal of the glass beads, a dispersion of active charcoal having a mean grain size of 0.5 ⁇ m was obtained.
  • a dispersion of an electron-transmitting agent was prepared by adding 10 g of an electron-transmitting agent described below, 0.5 g of polyethylene glycol as a dispersing agent, and 0.5 g of an anionic surfactant described below to a 5% aqueous gelatin solution, and then milling for 60 minutes with glass beads having a mean grain size of 0.75 mm. After removal of the glass beads, a dispersion of an electron-transmitting agent having a mean grain size of 0.3 ⁇ m was obtained.
  • Gelatin dispersions each containing a dye-providing compound were prepared as described below.
  • An yellow, magenta or cyan dye-providing composition as indicated below was added to 50 cm 3 of ethyl acetate and dissolved while heating at about 60°C to form a uniform solution.
  • the resulting solution was blended with 100 g of 10% lime-processed gelatin-containing aqueous solution, 0.6 g of sodium dodecylbenzenesulfonate and 50 cm 3 of water by stirring and then dispersed for 10 minutes with a homogenizer at 10000 rpm.
  • the dispersion thus prepared was designated as a gelatin dispersion of a dye-providing compound.
  • a gelatin dispersion of electron-donating compound (4) for an interlayer was prepared as described below.
  • Composition of image-receiving material used herein was as follows: Third Layer: Coated Amount (g/m 2 ) Gelatin 0.05 Silicone Oil (1) 0.04 Surfactant (1) 0.001 Surfactant (2) . 0.02 Surfactant (3) 0.10 Matting Agent (1) (silica) 0.02 Guanidine Picolinate 0.45 Water-soluble Polymer (1) 0.24 Second Layer: Mordant Agent (1) 2.35 Water-soluble Polymer (1) 0.20 Gelatin 1.40 Water-soluble Polymer (2) 0.60 High Boiling Point Solvent (1) 1.40 Guanidine Picolinate 2.25 Brightening Agent (1) 0.05 Surfactant (5) 0.15 First Layer: Gelatin 0.45 Surfactant (3) 0.01 Water-soluble Polymer (1) 0.04 Hardening Agent (1) 0.30
  • First Backing Layer Gelatin 3.25 Hardening Agent
  • Second Backing Layer Gelatin 0.44 Silicone Oil
  • 0.08 Surfactant (4) 0.04 Surfactant (5) 0.01 Matting Agent
  • Sample Nos. 402 to 406 were prepared, as indicated in Table 4 below.
  • Sample Nos. 402 to 406 each contained a compound used in the present invention, which had been dispersed in gelatin by an oil dispersion method, in the second and fourth layers each in an amount of 3 ⁇ 10 -3 mol/m 2 .
  • the sample Nos. 401 to 406 thus prepared were exposed by using a spectrophotometric camera through an optical wedge where the optical density continuously varied in the direction vertical to the wavelength.
  • the exposed samples were then wetted with water by applying a hot water (35°C) to the emulsion surface of each sample in an amount of 15 ml/m 2 for 3 seconds.
  • the thus wetted sample was attached to the previously prepared image-receiving material so that the coated surfaces of the two faced to each other.
  • the combined sample was then heated with a heat roller for 15 seconds whereupon the temperature of the wetted layer was adjusted to be 78°C. Then, the image receiving material was peeled off from the photographic material and, as a result, a blue-green-red spectrographic image was formed on the image-receiving layer in accordance with the wavelength of the light as exposed.
  • the density of each of the yellow, magenta and cyan colors was measured with 310 Type Densitometer (manufactured by X-rite Co.). The results obtained are shown in Table 4 below. From the results above, it is noted that the density of all the blue, green and red colors increased by adding the compounds of formula (I) used in the present invention. Additionally, the color purity also increased by adding the compound of formula (I) used in the present invention due to the decrease in complementary components. Accordingly, it was proved that the compounds of the present invention had an excellent ability to improve the color reproducibility.
  • Each of Compounds I-12 and I-36 used in the present invention was added to each of the 3rd, 4th, 6th, 7th, 9th and 10th layers of Sample 102 described in Example 1 of JP-A-01-112241 in an amount of 3 mg/m 2 to prepare Sample Nos. 6-1 and 6-2. Each of these samples was then treated and evaluated in the same manner as described in the same example as above and found to be excellent in color reproducibility.
  • Compound I-14 of the present invention was added to each of the 3rd, 4th, 6th, 7th, 11th, and 12th layers of Sample No. 502 as described in Example 4 of EP-A-327066 in an amount of 3 mg/m 2 per layer to prepare Sample No. 9-1.
  • the resulting sample was developed in the same manner as described in the same example as above and found to be excellent in color reproducibility.
  • Compound I-12 used in the present invention was added to the emulsion layer of Sample No. 1 as described in Example 1 of JP-A-01-234840 in an amount of 560 mg per 1 mol of silver halide to prepare Sample No. 10-1.
  • the resulting sample was developed in the same manner as described in the same example as above and found to be excellent in blackened density and image quality.

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Claims (13)

  1. Photographisches Silberhalogenidmaterial, umfassend eine Silberhalogenidemulsion und eine durch Formel (I) dargestellte Verbindung:
    Figure 01300001
    worin R eine aliphatische Gruppe, eine aromatische Gruppe, oder eine heterocyclische Gruppe bedeutet, und Z bedeutet eine zur Bildung einer Stickstoff-enthaltenden aromatischen heterocyclischen Gruppe notwendige Atomgruppe, wobei der aromatische heterocyclische Ring ausgewählt ist aus der Gruppe, bestehend aus Pyrrol, Imidazol, Pyrazol, 1,2,3-Triazol, 1,2,4-Triazol, Benzotriazol, Tetrazol, Thiazolin-2-thion, Thiazolin-2-on, Oxazolin-2-thion, 1,2-Oxazolin-5-thion, 1,2-Thiazolin-5-thion, 1,2-Oxazolin-5-on, 1,2-Thiazolin-5-on, Tetrazolin-2-thion, 1,3,4-Thiadiazolin-2-thion, 1,3,4-Thiadiazolin-2-on, 1,3,4-Oxadiazolin-2-thion, 1,3,4-Oxadiazolin-2-on, 1,2,4-Triazolin-3-thion, Dihydropyridin-2-thion, Dihydropyridin-2-on, Isoindol, Indol, Indazol, Benzimidazol, Benzimidazol-2-thion, Benzimidazol-2-on, Benzoxazolin-2-thion, Benzoxazolin-2-on, Benzothiazolin-2-thion, Benzothiazolin-2-on, Purin, Pyrazolopyridine, und Pyrazolopyrimidine, worin die Stickstoff-enthaltende heterocyclische aromatische Gruppe, welche durch
    Figure 01310001
    in Formel (I) dargestellt ist oder jeder Substituent dieser Gruppe mit wenigstens einer Nitrogruppe substituiert ist, und worin R eine Ballastgruppe oder eine Gruppe, welche fähig ist zum Beschleunigen der Adsorption der Verbindung auf Silberhalogenid, enthält.
  2. Photographisches Silberhalogenidmaterial nach Anspruch 1, worin das Material auch eine durch die allgemeine Formel (III) dargestellte Hydrazinverbindung enthält:
    Figure 01310002
    worin R31 eine aliphatische Gruppe oder eine aromatische Gruppe bedeutet; R32 bedeutet ein Wasserstoffatom, eine Alkylgruppe, eine Arylgruppe, eine Alkoxygruppe, eine Aryloxygruppe, eine Aminogruppe, eine Carbamoylgruppe oder eine Oxycarbonylgruppe; G1 bedeutet eine Carbonylgruppe, eine Sulfonylgruppe, eine Sulfoxygruppe, eine
    Figure 01310003
    Gruppe oder eine Iminoethylengruppe, und A1 und A2 bedeuten Wasserstoffatome, oder eines bedeutet ein Wasserstoffatom und das andere bedeutet eine substituierte oder nicht-substituierte Alkylsulfonylgruppe, eine substituierte oder nicht-substituierte Arylsulfonylgruppe oder eine substituierte oder nicht-substituierte Acylgruppe.
  3. Photographisches Silberhalogenidmaterial nach Anspruch 2, worin R31 eine Arylgruppe bedeutet.
  4. Photographisches Silberhalogenidmaterial nach Anspruch 2, worin A1 und A2 Wasserstoffatome bedeuten.
  5. Photographisches Silberhalogenidmaterial nach Anspruch 2, worin G1 eine Carbonylgruppe bedeutet.
  6. Photographisches Silberhalogenidmaterial nach Anspruch 2, worin das photographische Material auch eine negativ arbeitende Emulsion enthält.
  7. Photographisches Silberhalogenidmaterial nach Anspruch 2, worin die durch Formel (I) dargestellte Verbindung in einer Silberhalogenidemulsionsschicht vom inneren latenten Bildtyp oder in einer zu der Silberhalogenidemulsionsschicht vom inneren latenten Bildtyp benachbarten hydrophilen kolloidalen Schicht enthalten ist.
  8. Photographisches Silberhalogenidmaterial nach Anspruch 1, worin R eine aromatische Gruppe bedeutet.
  9. Photographisches Silberhalogenidmaterial nach Anspruch 1, worin die durch R dargestellte Gruppe eine Gruppe enthält, welche die Adsorption auf Silberhalogenid beschleunigt.
  10. Photographisches Silberhalogenidmaterial nach Anspruch 1, worin die durch R dargestellte Gruppe eine Ballastgruppe enthält.
  11. Photographisches Silberhalogenidmaterial nach Anspruch 1, worin der Stickstoff-enthaltende heterocyclische aromatische Ring, welcher durch
    Figure 01320001
    in Formel (I) gebildet ist, aus der Gruppe, bestehend aus Pyrrol, Imidazol, Pyrazol, Triazol, Tetrazol, Thiazolin-2-thion, Oxazolin-2-thion, Indol, Indazol, Benzimidazol, 1,3,4-Thiadiazolin-2-thion, Tetrazolin-5-thion, 1,3,4-Oxadiazolin-2-thion, 1,2,4-Triazolin-3-thion und Pyrazolopyridinen ausgewählt ist.
  12. Photographisches Silberhalogenidmaterial nach Anspruch 1, worin der Stickstoff-enthaltende heterocyclische aromatische Ring, welcher durch
    Figure 01330001
    in Formel (I) gebildet ist, ein Ring ist, enthaltend Pyrazolkerne, ausgewählt aus der Gruppe, bestehend aus Pyrazol, Indazol und Pyrazolopyridin.
  13. Photographisches Silberhalogenidmaterial nach Anspruch 1, worin der durch Z und N in Formel (I) gebildete Stickstoff-enthaltende heterocyclische Ring Pyrazol, Indol, Indazol, Benzimidazol, Benzimidazol-2-thion, Benzoxazolin-2-thion, Benzothiazolin-2-on oder ein Pyrazolopyridin ist.
EP90107561A 1989-04-21 1990-04-20 Photographische Silberhalogenidmaterialien Expired - Lifetime EP0393711B1 (de)

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US12174052B2 (en) 2020-09-17 2024-12-24 Vega Grieshaber Radar measuring device

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EP0444506B1 (de) * 1990-02-26 1994-10-26 Du Pont De Nemours (Deutschland) Gmbh Arylhydrazide enthaltende photographische Silberhalogenidmaterialien
JP2725088B2 (ja) * 1991-01-17 1998-03-09 富士写真フイルム株式会社 ハロゲン化銀写真感光材料
JPH05333467A (ja) * 1991-05-02 1993-12-17 Fuji Photo Film Co Ltd ハロゲン化銀写真感光材料
EP0671654B1 (de) * 1994-03-11 1997-09-10 Agfa-Gevaert N.V. Photographisches Material, das einen neuen Typ eines Hydrazides enthält

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JPS61213847A (ja) * 1985-03-19 1986-09-22 Fuji Photo Film Co Ltd ハロゲン化銀写真感光材料

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JPH0833603B2 (ja) * 1985-04-18 1996-03-29 富士写真フイルム株式会社 ハロゲン化銀写真感光材料及びそれを用いた超硬調ネガ画像形成方法
US4816373A (en) * 1986-01-31 1989-03-28 Mitsubishi Paper Mills, Ltd. Method of producing images
US4684604A (en) * 1986-04-24 1987-08-04 Eastman Kodak Company Oxidative release of photographically useful groups from hydrazide compounds
JPH0778617B2 (ja) * 1987-09-12 1995-08-23 コニカ株式会社 ハロゲン化銀写真感光材料
JPH0778616B2 (ja) * 1987-09-12 1995-08-23 コニカ株式会社 返し特性の改良されたハロゲン化銀写真感光材料

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Publication number Priority date Publication date Assignee Title
US12174052B2 (en) 2020-09-17 2024-12-24 Vega Grieshaber Radar measuring device

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DE69032186D1 (de) 1998-05-07
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DE69032186T2 (de) 1998-10-22
JPH0339953A (ja) 1991-02-20

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