Patent ID: 7393625

Claim:
A photothermographic material comprising, on one side of a support, an image forming layer comprising at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for the organic silver salt, and a binder, and at least one non-photosensitive layer and, on the other side of the support, a non-photosensitive back layer, wherein both of at least one layer on the side having the image forming layer and the non-photosensitive back layer comprise an ammonium salt of an organic acid, a total amount of ammonia contained in the two sides is from 5×10 −4 mol/m 2 to 2×10 −2 mol/m 2 , and a molar ratio (A2/A1) of an ammonia content of the non-photosensitive back layer (A2) relative to an ammonia content of the at least one layer on the side having the image forming layer (A1) is from 0.3 to 5.0.