Patent ID: 7135276

Claim:
A photothermographic material comprising, on at least one surface of a support, at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, wherein the material contains a silver iodide complex-forming agent, and wherein 1) the photosensitive silver halide has an average silver iodide content of 40 mol % or higher, 2) 50% or more of a total projected area of the photosensitive silver halide is occupied by tabular grains having an aspect ratio of 2 or more, and 3) a mean equivalent spherical diameter of the photosensitive silver halide grains is from 0.2 μm to 5 μm and a variation coefficient of an equivalent spherical diameter distribution of the photosensitive silver halide grains is 30% or less.