Patent ID: 7101658

Claim:
A heat-developable photosensitive material comprising at least a photosensitive silver halide, a nonphotonsensitive organic silver salt, a reducing agent, a developing accelerator, a color adjusting agent and a binder on a support, wherein said photosensitive material has an average contrast between 2.5 and 6 at a density between 1.5 and 3.0; said photosensitive silver halide includes silver iodide at 5 mol % to 100 mol %; and the average particle size of said photosensitive silver halide is 5 nm to 80 nm; the developing accelerator is a compound represented by the following formula (III): wherein, in the formula (III), X 3 represents a hydrogen atom or a substituent, each of R 31 and R 32 independently represents a hydrogen atom or substituent, m denotes an integer from 0 to 4 and n denotes an integer from 0 to 2; and the reducing agent is represented by the following formula (VII): wherein each of R 71 and R 71 ′ independently represents an alkyl group having 1 to 20 carbon atoms, each of R 72 and R 72 ′ independently represents a hydrogen atom or a substituent with which a benzene ring may be substituted, each of X 71 and X 71 ′ independently represent a hydrogen atom or a substituent with which a benzene ring may be substituted, L represents one of —S— and —CHR 73 — and R 73 represents one of a hydrogen atom and an alkyl group having 1 to 20 carbon atoms.