Abstract: A silver halide photographic material is disclosed, comprising a support having thereon at least one of silver halide photographic emulsion layers and other hydrophilic colloidal layers, wherein said photographic emulsion layers or other hydrophilic colloidal layers contain a hydrazine compound represented by formula (I): ##STR1## wherein at least one of A.sub.1 and A.sub.2 represents a hydrogen atom and the other represents a hydrogen atom, a sulfonyl group or an acyl group; R.sub.1 represents an aliphatic, group, an aromatic group, or a heterocyclic group; Y.sub.1 represents a divalent organic group; G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, ##STR2## wherein R.sub.2 represents an alkoxy group or an aryloxy group, ##STR3## or an iminomethylene group; Z.sub.1 represents a group suitable for making a nucleophilic attack on G.sub.1 to separate the G.sub.1 --L.sub.1 --Z.sub.1 from the rest of the molecule; and L.sub.

Abstract: A silver halide photographic material is disclosed, comprising a support having thereon at least one of silver halide photographic emulsion layers and other hydrophilic colloidal layers, wherein said at least one of photographic emulsion layers and other hydrophobic colloidal layers contains a compound represented by formula (I) ##STR1## wherein at least one of A.sub.1 and A.sub.2 represents a hydrogen atom and other represents a hydrogen atom, a sulfinic residual group or ##STR2## wherein R.sub.0 represents an alkyl group, an alkenyl group, an aryl grup, an alkoxy group or an aryloxy group, and l.sub.1 represents an integer of 1 or 2; G represents ##STR3## wherein m.sub.1 represents an integer of 1 or 2, a sulfonyl group, a sulfoxy group ##STR4## wherein R.sub.

Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, said emulsion layer or at least one of other hydrophilic colloid layers containing a compound represented by formula (I):PWR--Time--.sub.T LA (I)wherein PWR represents a group which undergoes reduction to release (Time).sub.t LA; Time represents a group which release LA upon reaction following release of (Time).sub.t LA from PWR; t represents an integer of 0 or 1; and LA represents a group having a maximum light absorption in a wavelength range of 310 nm or more.

Abstract: A silver halide photographic material is disclosed, comprising a support having thereon at least one of silver halide photographic emulsion layers and other hydrophilic colloidal layers, wherein said photographic emulsion layers or other hydrophilic colloidal layers contain a compound represented by formula (I): ##STR1## wherein at least one of A.sub.1 and A.sub.2 represents a hydrogen atom and the other represents a hydrogen atom, a sulfinic residual group, or ##STR2## wherein R.sub.0 represents an alkyl group, alkenyl group, aryl group, alkoxy group or aryloxy group, and l.sub.1 represents an integer 1 or 2; G represents ##STR3## wherein m.sub.1 represents an integer 1 or 2, sulfonyl group, sulfoxy group, ##STR4## wherein R.sub.

Abstract: A silver halide photographic material capable of providing very high contrast image and having improved safelight safety is described, which comprises a support having thereon at least one silver halide emulsion layer, and containing in the silver halide emulsion layer or another hydrophilic colloid layer (i) a compound represented by formula (I) ##STR1## wherein PWR represents a group capable of releasing ##STR2## upon being reduced; Time represents a group capable of releasing LA after being released from PWR, t is 0 or 1; and LA represents a group having an absorption maximum in the wavelength region longer than 310 nm, (ii) a hydrazine derivative, and (iii) at least one compound represented by formulae (IX) and (X) ##STR3## wherein R.sup.91, R.sup.92, R.sup.93, and R.sup.

Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein said emulsion layer or other hydrophilic colloid layer contains a colored polymer matting agent. The colored matting agent comprises a dye adsorbed to a polymer. The dye is selected to adsorb light in the same wavelength region that to which the photographic material is exposed. Use of the present invention inhibits the occurrence of black spots.

Abstract: A silver halide photographic material is disclosed, comprising a support having thereon at least one of silver halide photographic emulsion layers and other hydrophilic colloid layers, wherein at least one of said silver halide photographic emulsion layers and other hydrophilic colloid layers contains a compound represented by formula (I): ##STR1## wherein at least one of A.sub.1 and A.sub.2 represent a hydrogen atom and the other represents a hydrogen atom, a sulfonyl group or an acyl group; G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, a ##STR2## group, a ##STR3## group, or an iminomethylene group; L.sub.1 represents a bivalent group; X.sub.1 represents --O-- or an ##STR4## group wherein R.sub.4 is hydrogen, an alkyl group or an aryl group; Y.sub.1 represents ##STR5## R.sub.1 and R.sub.2 each represents an aliphatic group, an aromatic group, a heterocyclic group, --OR.sub.5 or --NR.sub.5 R.sub.6 wherein R.sub.

Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide light-sensitive emulsion layer, wherein at least one compound represented by the formula (I) is present in said silver halide emulsion layer or at least one other hydrophilic colloid layer of said material:A--B (I)wherein A represents a blocking group which can release a dye for photographic purposes during processing and B represents said dye for photographic purposes which is bonded to A by means of a hetero atom.

Abstract: A superhigh contrast negative type silver halide photographic material, comprising a support having provided thereon at least one silver halide emulsion layer, wherein the emulsion layer or at least one other hydrophilic colloid layer contains at least one hydrazine derivative and at least one organic desensitizer having at least one water-soluble group or alkali-dissociative group. The material has a reduced sensitivity suitable for processing in a bright room while enjoying the effect of the hydrazine derivative to increase contrast.

Abstract: A superhigh contrast negative type silver halide photographic material comprising a support having provided thereon at least one silver halide emulsion layer, the emulsion layer or at least one other hydrophilic colloid layer containing at least one hydrazine derivative and at least one compound of formula (I):Y[(X).sub.n A-B].sub.m (I)wherein Y represents a group capable of adsorbing to silver halide; X represents a divalent linking group comprising an atom or atoms selected from a hydrogen atom, a carbon atom, a nitrogen atom, an oxygen atom and a sulfur atom or an atomic group comprised of the atoms; A represents a divalent linking group; B represents a substituted or unsubstituted amino group, an ammonium group or a nitrogen-containing heterocyclic group; m represents 1, 2 or 3; and n represents 0 or 1. The photographic material may contain an organic desensitizer and a water-soluble rhodium salt, and the material has a low sensitivity and can be handled in a bright room.

Abstract: A super-high contrast negative type silver halide photographic material is disclosed, comprising a support having provided thereon at least one silver halide emulsion layer, said emulsion layer or layers or other hydrophilic colloidal layer or layers containing a hydrazine derivative, wherein said photographic material further contains a compound selected from reductones and at least one compound represented by formula (I) or (II) ##STR1## wherein X.sub.1 represents a halogen atom, an N-methylolamino group, or a glycidoxy group; Y.sub.1 and Z.sub.1 each represents a hydrogen atom, a halogen atom, a hydroxyl group, --OM (wherein M represents an alkali metal ion), a substituted or unsubstituted amino group, an alkyl ether group, a phenyl ether group, an alkyl thioether group, a phenyl thioether group, a sulfonamide group, or an alkylsulfonamide group.

Abstract: A super-high contrast negative type silver halide photographic material is disclosed, comprising a support having provided thereon at least one silver halide emulsion layer, said emulsion layer or layers or other hydrophilic colloidal layer or layers containing a hydrazine derivative, wherein said material further contains an acidic polymer incorporating not less than 20 mol % of a monomer unit containing an acid group and a hydrophobic polymer incorporating not more than 20 mol % of a monomer unit containing an acid group and having a glass transition temperature of not more than 50.degree. C. The material exhibits high contrast and high sensitivity without forming black spots even when processed with a stable developing solution.

Abstract: An image forming process capable of providing photographic images having extremely high contrast and high resolution for use in photoengraving is disclosed, which comprises processing an image-wise exposed silver halide light-sensitive material having at least two silver halide emulsion layers on a support, one of said emulsion layers providing a contrasty gradation and the other of said emulsion layers providing a soft tone gradation, with a hydrazine contrast development system, a tetrazolium contrast development system or a lith development system, wherein the gamma (.gamma.) value of the portion having a density (D) from 0.3 to 1.5 on the characteristic curve obtained is less than 10 and the gamma (.gamma.) value of the portion having a density (D) from 1.5 to 3.0 is at least 10.

Abstract: A negative type silver halide photographic material and a method for forming a super high contrast negative image using the photographic material are disclosed. The photographic material comprises a support, at least one silver halide emulsion layer on the support, and at least one light-insensitive colloid layer on the support, said emulsion layer or light-insensitive hydrophilic colloid layer containing a hydrazine derivative, and further contains the tertiary amine salt of an acid polymer.

Abstract: A silver salt diffusion transfer photographic element is disclosed, comprising a support, an image-receiving layer containing at least a silver-precipitating nucleus provided on the support, and a layer containing cellulose acetate having a degree of acetylation of 40 to 49% and a cationic polymer electrolyte sandwiched between the support and the image-receiving layer.

Abstract: A silver salt diffusion transfer photographic element which can provide a positive print having good stability is disclosed, comprising (1) a light-sensitive element including a light-sensitive silver halide emulsion layer containing silver iodide, and (2) an image-receiving element including a support and an image-receiving layer containing silver-depositing nuclei, with said image-receiving element having an iodide ion-capturing layer between said support and said image-receiving layer.

Abstract: An image-receiving element for a diffusion transfer photographic process is described, comprising a support having thereon an image-receiving layer and a stripping layer composed of a copolymer, wherein said copolymer contains more than 40 mole % of a monomer unit derived from an ethylenically unsaturated carboxylic acid or a salt thereof, and said stripping layer is at least partially crosslinked.

Abstract: A photographic support comprising a plastic film having on at least one surface thereof a layer comprising a polymer that including ethylene units of the formula ##STR1## and vinyl alcohol units of the formula ##STR2##

Abstract: A mordant layer for a color diffusion transfer photographic element containing a cationic polymer latex obtained by emulsion-polymerizing a monomer represented by formula (I) ##STR1## wherein R.sub.1 and R.sub.2 each represents hydrogen or an alkyl group having from 1 to 6 carbon atoms; R.sub.3, R.sub.4, and R.sub.5 each can represent an alkyl group having from 1 to 20 carbon atoms, or an aralkyl group having from 7 to 10 carbon atoms, or any two or R.sub.3, R.sub.4, and R.sub.5 together can form a ring; and X.sup..crclbar. represents an anion; as a shell component for a core component of dispersed particles of a polymer latex obtained by emulsion-polymerizing a water-insoluble monomer or monomers other than the monomer of formula (I).

Abstract: Integral diffusion transfer photographic film unit is described, comprising at least two support layers, at least one of which is transparent, having laminated therebetween at least one silver halide emulsion layer in association with a dye-image-providing material and an image-receiving layer, and a processing composition to be distributed between the two support layers, wherein at least one marginal portion of the integral film unit is masked by a masking material having formed on at least one surface thereof a pressure-sensitive or heat-sensitive adhesive layer containing an acid or an acid-releasing material.