The present invention relates to a photothermographic material including,
on a same surface of a support, a photosensitive silver halide, a
non-photosensitive organic silver salt, a reducing agent and a binder,
wherein the photosensitive silver halide has a silver iodide content
within a range from 40 to 100 mol %, and the material is thermally
developed within a developing time of 12 seconds or less. The invention
also relates to an image forming method using the photothermographic
material.