Patent ID: 7115359

Claim:
A photothermographic material comprising a support having at least on one side of the support: photosensitive silver halide particles; an organic silver salt, provided that the organic silver salt is selected from silver salts of an aliphatic carboxylic acid having a carbon number of 10–30; a reducing agent for silver ions; a leuco dye represented by General Formula (1); a stabilizing compound represented by General Formula (2), (3) or (4); and a polyhalomethane compound represented by General Formula (11): wherein CP represents a coupler group; —N(R)D represents a developer group, R represents a hydrogen atom or a blocking group and D represents a hydrogen atom or a substituerit; AH represents an acid; and 1 represents an integer of 0 to 5, wherein, X represents an electron withdrawing group; W represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a halogen atom, a cyano group, an acyl group, a thioacyl group, an oxalyl group, an oxyoxalyl group, a —S-oxalyl group, an oxamoyl group, an oxycarbonyl group, a —S-carbonyl group, a carbamoyl group, a thiocarbamoyl group, a sulfonyl group, a sulfinyl group, an oxysulfonyl group, a —S-sulfonyl group, a sulfamoyl group, an oxysulfinyl group, a —S-sulfinyl group, a sulfinamoyl group, a phosphoryl group, a nitro group, an imino group, a N—carbonylimino group, a N-sulfonylimino group, an ainmonium group, a sulfonium group, a phosphonium group, a pyrylium group or an immonium group; R 1 represents a hydroxyl group or a salt thereof; and R 2 represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group, provided that X and W may form a ring structure by bonding to each other, and X and R 1 may be a cis-form or a trans-form, wherein X 1 represents a substituent; R 3 represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; and n represents an integer of 0 to 4, wherein Q represents an atomic group to form a nitrogen-containing heterocyclic ring; J represents —SO 2 , —CO—, —COO— or —CON(R 5 )—, R 5 represents a hydrogen atom or a substituent; R 4 represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group, wherein A 1 represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group, Z 21 , Z 22 and Z 23 each represent a hydrogen atom, a halogen atom, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfonyl group or an aryl group, and at least one of them is a halogen atom, J 11 is a group containing —C(═O)—, —SO— or —SO 2 —, wherein —C(═O)—, —SO— or —SO 2 — directly bonds to the C of —C(Z 21 ) (Z 22 ) (Z 23 ).