Photothermographic material and an image forming method

A photothermographic material comprising:

• a support;
• an image forming layer which is disposed on the support and comprises at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder;
• at least one non-photosensitive layer which is disposed on the same side of the support as the image forming layer and farther from the support than the image forming layer;
• and
• a back layer which comprises at least another non-photosensitive layer and is disposed on the opposite side of the support from the image forming layer,
• wherein the back layer contains a fluorocarbon polymer latex having a monomer component represented by the following (M2) and a monomer component represented by the following (M1):
• (M2) a monomer containing a fluorine atom and having an unsaturated bond capable of radical polymerization;
• (M1) a monomer having a group capable of forming a salt or a poly(alkylene oxide) group and having an unsaturated bond capable of radical polymerization.