Abstract: A photothermographic imaging material having a support; a photosensitive layer containing photosensitive silver halide particles on one face of the support; and a non-photosensitive layer provided on a side of the support where the photosensitive layer is provided. At least one of the photosensitive layer and the non-photosensitive layer contains an organic silver salt, a reducing agent, a compound represented by the Formula (1) and a compound represented by the Formula (2a).

Abstract: A photothermographic material having a support provided on at least one side of the support light-sensitive silver halide particles, an organic silver salt and a reducing agent, as well as a leuco dye of a specific structure and a compound of a specific structure.

Abstract: A photothermographic material having a support provided on at least one side of the support light-sensitive silver halide particles, an organic silver salt and a reducing agent, as well as a leuco dye of a specific structure and a compound of a specific structure.

Abstract: A photothermographic imaging material having a support; a photosensitive layer containing photosensitive silver halide particles on one face of the support; and a non-photosensitive layer provided on a side of the support where the photosensitive layer is provided. At least one of the photosensitive layer and the non-photosensitive layer contains an organic silver salt, a reducing agent, a compound represented by the Formula (1) and a compound represented by the Formula (2a).

Abstract: A thermally developable material is disclosed. The material comprises a support both surfaces which are covered with a resin thermal shrinkage ratio of not more than 0.02% at 150° C. for 30 minutes, and an image forming layer comprising an organic silver. The thermally developable material is advantageous in transparent without staining and size repetition accuracy.

Abstract: A method for hardening gelatin comprises the step of mixing gelatin with a compound represented by the following formula (I), (II) or (III): ##STR1## wherein R.sub.1 and R.sub.2 independently represent a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group or R.sub.1 and R.sub.2 combine with each other to form a nitrogen-containing heterocyclic ring; J represents an organic group; 1 represents an integer of 2 to 5; and m represents an integer of 1 to 5.

Abstract: A silver halide photographic light sensitive material contains a novel nucleating compound represented by the following formula (I), which is capable of functioning as a contrast increasing agent in a negative system or as a foggant in a direct positive system ##STR1##

Abstract: Disclosed is a silver halide photographic light-sensitive material comprising a support having thereon a hydrophilic colloidal layer comprising at least one silver salt of a compound having at least one acid group in the molecule, and the compound is represented by Formula I, Formula II or Formula III: ##STR1## wherein R.sup.1 and R.sup.2 independently represent a hydrogen atom or a group selected from the group consisting of an alkyl group, an alkenyl group, an aryl group and a heterocyclic residue; L.sub.1, L.sub.2, L.sub.3 and L.sub.4 independently represent a methine group; n.sub.1 is an integer of 0 to 3; n.sub.2 is an integer of 0, 1 or 2 and R.sup.3 represents an alkyl group or an alkenyl group. Q.sub.1 represents a non-metal atom group necessary to complete a 5-membered or 6-membered heterocyclic ring; ##STR2## wherein R.sup.4 and R.sup.

Abstract: A silver halide photographic light-sensitive material containing a dye is disclosed. The dye is represented by a formula ##STR1## wherein R.sub.1 represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group; R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, an acylamino group, an ureide group, an amino group, an acyl group, an alkoxy group, an aryloxy group, a hydroxyl group, a carboxyl group, a cyano group, a sulfamoyl group or a sulfonamide group; B represents a 5- or 6-membered oxygen-containing heterocyclic group or a 6-membered nitrogen-containing heterocyclic group; L.sub.1 through L.sub.3 independently represent a methine group; n represents 0 or 1. The compound of formula 1 has at least one carboxyl group, sulfonamide group or sulfamoyl group.

Abstract: A silver halide color photographic light-sensitive material is disclosed. The light-sensitive material comprises a support having thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer, and at least one of the silver halide emulsion layers contains a silver salt of dye. The light-sensitive material has a raised sharpness, lowered fog and improved storage stability.

Abstract: A silver halide color photographic light-sensitive material having photographic component layers on a support and at least one layer of which contains a silver salt of dye, is disclosed. The material has properties of high sharpness, high speed, less fogging and excellent raw stock stability.

Abstract: Disclosed is a silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, a hydrazine compound is contained in said silver emulsion layer or at least one of other layers, wherein said material contains at least one compound represented by Formula I or Formula II, ##STR1## wherein R.sub.1 and R.sub.2 each independently represent an alkyl group, an alkenyl group or an alkynyl group respectively; R.sub.1 and R.sub.2 may form a ring; R.sub.3 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; L.sub.1 represents a divalent linking group; X represents a --[S--L.sub.2 --Y--(L.sub.3)n]-- group or a [--(L.sub.3)n--Y--L.sub.2 --S--]-- group, L.sub.2 represents an alkylene group or an alkenylene group, Y represents a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, L.sub.3 represents ##STR2## wherein Z.sub.1, Z.sub.2 and Z.sub.

Abstract: There is disclosed a silver halide photographic light-sensitive material containing a compound represented by the following formula. The photographic material provides sufficiently high contrast images using a stable developer having a low pH value. The photographic material also provides a direct-positive type photographic material improved in image quality and storage stability.

Abstract: The improved silver halide photographic material contains a novel nucleating compound that is useful either as a contrast increasing agent in light-sensitive material for use in photochemical processes or as a foggant in direct positive light-sensitive materials.

Abstract: A silver halide photographic light-sensitive material is disclosed. The photographic material contais fine solid particles of a compound represented by a formula ofA=L.sub.1 -L.sub.2 =L.sub.3).sub.m Bwherein A represents an acidic mother nucleus of 2-pyrazoline-5-one; B represents an aryl group which is substituted at 4th position thereof with an amino group having at least one of alkenyl, alkknyl or heterocyclic group or with a cyclic amino group; L.sub.1, L.sub.2 and L.sub.3 each represent a methine group; m is an integer of 0 or 1; wherein A contains a carboxyphenyl, sulfonaminodophenyl or aminosulfonylaminophenyl group. The compound is used in a filter layer in the photographic material.

Abstract: A silver halide photographic light-sensitive material having a support and provided thereon, at least one silver halide emulsion layer containing Compound [I] or Compound [II] represented by Formula [I] or [II] is disclosed; ##STR1##

Abstract: Silver halide photographic material having a hydrophilic colloidal layer that contains at least one cyanine dye with a 3H-pyrolopyridine, 4H-thienopyrrole, 6H-thienopyrrole, 4H-furopyrrole or 6H-furopyrrole nucleus which has in its dye molecule at least two acid groups or at least two substituents each having at least one --CH.sub.2 CH.sub.2 OR group (where R is a hydrogen atom or an alkyl group).

Abstract: A silver halide photographic light-sensitive material is disclosed, which is inhibited in formation of pepper spot in a halftone image and capable of making extremely high contrast image thereon. The light-sensitive material contains a compound represented by the following formula: ##STR1## wherein A.sub.1 and A.sub.2 are each an arylene group or a divalent heterocyclic group; L is a linking group;z is a formyl group, an acyl group, a sulfonyl group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group, a thioacyl group or a ##STR2## group; X is --NR.sub.6 R.sub.7 or --OR.sub.8, in which R.sub.6 and R.sub.7 are each a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a heterocyclic group, a hydroxy group, an alkoxy group, an alkenylkoxy group, an alkynyloxy group, an aryloxy group, or a heterocyclic oxy group, and R.sub.8 is a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; n is 1 or 2; m is 0 or 1; R.sub.1 and R.sub.

Abstract: A method of forming a cyan dye image by development of an exposed silver halide photographic material with a developer containing a cyan coupler having one of the following formulae: ##STR1## wherein R.sub.1 is a hydrogen atom or alkyl having 1 to 20 carbon atoms; R.sub.2 is alkyl, aryl, or a hetero ring; R.sub.3 is hydrogen or halogen; X is arylene or alkylene; Z is a coupling off group; n is 1 or 2; ##STR2## wherein Cy, Cy' and Cy" are individually a cyclic aliphatic, aromatic or heterocyclic group; R, R' and R" are individually alkyl; A is hydrogen or a monovalent organic group, Y is a divalent organic group, K, l, m, m' m" are individually 0 or 1, provided that when m=0, Cy is a cyclic aliphatic or heterocyclic group.

Abstract: A method of forming a cyan dye image by development of an exposed silver halide photographic material with a developer containing a 2,5-diacylaminophenol cyan coupler containing a substituted alkylsulfonylamino terminal moiety or a substituted alkylaminosulfonyl terminal moiety in the 2- or 5- position.