Photothermographic material

A photothermographic material comprising a support having disposed on one surface thereof at least one image-forming layer containing a binder, an organic silver salt, a reducing agent for reducing silver ions, an organic polyhalogen compound represented by the following formula (H) in the range of 1×10−4 mol to 0.8 mol per mol of the organic silver salt:

• Q-(Y)n-C(Z1)(Z2)X Formula (H)
• wherein, Q represents an alkyl group, an aryl group, or a heterocyclic group;
• Y represents a divalent linking group;
• n represents 0 or 1;
• Z1, and Z2 each independently represent a halogen atom;
• and X represents a hydrogen atom or an electron attracting group;
• and a photosensitive silver halide, wherein the photosensitive silver halide has a silver iodide content ranging from 10 mol % to 100 mol %, and said material is irradiated with a laser beam and further comprises at least one compound represented by the following formula (1) in the range of from 1×10−4 mol to 5×10−1 mol per mol of the silver halide:
• wherein Z represents a group of atoms to form a 5- or 6-membered heteroaromatic ring containing at least two nitrogen atoms;
• and
• R represents a hydrogen atom, an alkyl group, an aralkyl group, an alkoxy group or an aryl group.