Patent ID: 7332267

Claim:
A photothermographic material comprising an image forming layer containing at least a light-sensitive silver halide, a light-insensitive organic silver salt, a reducing agent and binder, and a non-image forming layer on at least one surface of a support, wherein, 70% by weight or more of the binder in the image forming layer is a hydrophilic binder, and the photothermographic material further comprises a metal phthalocyanine compound represented by the following formula (PC-1): wherein M represents a metal atom, R 1 , R 4 , R 5 , R 8 , R 9 , R 12 , R 13 and R 16 respectively represent a hydrogen atom or a substituent selected from a halogen atom, alkyl group, alkenyl group, alkynyl group, aryl group, heterocyclic group, acyl group, alkoxycarbonyl group, aryloxycarbonyl group, carbamoyl group, carboxy group or its salts, sulfonylcarbamoyl group, acylcarbamoyl group, sulfamoylcarbamoyl group, carbazoyl group, oxalyl group, oxamoyl group, cyano group, thiocarbamoyl group, hydroxy group, alkoxy group, aryloxy group, heterocyclic oxy group, acyloxy group, carbonyloxy group, carbamoyloxy group, sulfonyloxy group, amino group, acylamino group, sulfonamide group, ureide group, thioureide group, imide group, carbonylamino group, sulfamoylamino group, semicarbazide group, thiosemicarbazide group, hydrazino group, ammonio group, oxamoylamino group, sulfonylureide group, acylureide group, acylsulfamoylamino group, nitro group, mercapto group, thio group, sulfonyl group, sulfinyl group, sulfo group or its salts, sulfamoyl group, acylsulfamoyl group, sulfonylsulfamoyl group or its salts, a group containing a phosphoric acid amide or phosphate ester structure, silyloxy group and silyl group, where at least one of R 1 , R 4 , R 5 , R 8 , R 9 , R 12 , R 13 and R 16 is an electron attractive group and R 2 , R 3 , R 6 , R 7 , R 10 , R 11 , R 14 and R 15 respectively represent a hydrogen atom.