Patent ID: 7018790

Claim:
A photothermographic imaging material, comprising: a support; an image forming layer containing an organic silver salt, a photosensitive silver halide, a binder and a silver ion reducing agent, the image forming layer being provided on the support; and a cyan coloring leuco dye, wherein the photosensitive silver halide contains silver halide grains having a mean particle size of 10 to 50 nm, and the silver ion reducing agent is a compound represented by the following Formula (A-3), wherein the X 31 represents a chalcogen atom or a CHR, the R representing a hydrogen atom, a halogen atom, an alkyl group or an alkenyl group; each R 33 represents an alkyl group, at least one R 33 being a secondary or tertiary alkyl group; the each R 34 represents a hydrogen atom or a group capable of being substituted on a benzene ring; each Q 20 represents a group capable of being substituted on a benzene ring; and each of the m2 and the n2 represents an integer of 0 to 2.