Patent ID: 7396641

Claim:
A black and white photothermographic material comprising, on at least one side of a support, at least a photosensitive silver halide, a non-photosensitive organic silver salt, and a reducing agent for silver ions, wherein the reducing agent for silver ions is a compound represented by the following formula (PP) and having a molecular weight of from 450 to 3000, and the black and white photothermographic material further comprises a compound represented by the following formula (II): wherein R 1 and R 2 each independently represent a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; at least one of R 1 and R 2 is an alkyl group having 1 to 20 carbon atoms; L represents a linking group having a valency of from 2 to 8 and represents an alkylene group, an arylene group, an aralkylene group, a heterocyclic linking group, or a combination thereof; R 3 represents a hydrogen atom or a substituent; and n represents an integer of from 2 to 8; wherein R 1c represents an alkyl group, an aryl group, an alkenyl group, or an alkynyl group; X 1c represents an alkoxycarbonyl group, a carbamoyl group, a sulfonyl group, or a sulfamoyl group; and Y 1 to Y 5 each independently represent a hydrogen atom or a substituent.