Patent ID: 7977040

Claim:
A heat developable photosensitive material comprising at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions and a binder on one surface of a support, wherein the non-photosensitive organic silver salt contains 53 mol % to 85 mol % of silver behenate; and the total amount of silver of the non-photosensitive organic silver salt and photosensitive silver halide is 0.1 to 1.9 g/m 2 ; and the reducing agent includes at least one of polyphenol compounds represented by the following formula (1): and any layer that is provided on a support side with the photosensitive silver halide contains an aromatic carboxylic acid compound represented by the following formula (2): wherein in formula (1), each of R 11 and R 11′ represents a t-butyl group, each of X 11′ and R 12′ independently represents a hydrogen atom or group that can bond to a first benzene ring of the polyphenol compounds, and each of X 11 and R 12 independently represents a hydrogen atom or group that can bond to a second benzene ring of the polyphenol compounds; and R 11 and X 11 , R 11′ and X 11′ , R 12 and X 11 , and R 12′ and X 11′ , respectively, may bond to each other to form a ring; and L represents a —S— group or a —CHR 13 — group; and R 13 represents a hydrogen atom or an alkyl group; wherein in formula (2), each of R 1 to R 5 independently represents a hydrogen atom or group that can bond to a benzene ring; at least one of R 1 to R 5 represents a non-dissociating substituent that bonds to the benzene ring via a carbon atom, nitrogen atom, oxygen atom, sulfur atom or phosphorous atom; R 1 or R 5 represents an arylsulfonyloxy group; and R 1 to R 5 are not a carboxyl group or group having a carboxyl group; and wherein the amount of the at least one of polyphenol compounds is 0.2 to 1.8 g/m 2 .