Patent ID: 7258970

Claim:
A photothermographic material comprising: a support; a photosensitive silver halide in an amount of 0.05 to 0.3 g/m 2 , in terms of coated silver per m 2 of the photo sensitive material; a non-photosensitive organic silver salt in an amount of 0.5 to 2.0 g/m 2 ; a heat developer; a binder; and a fluorine compound present in an emulsion surface protective layer and a back surface protective layer, wherein said fluorine compound is a compound represented by the following formula (B): wherein R 1 and R 2 independently are represented by the formula -La-Raf-W, wherein La represents a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkyleneoxy group or a divalent group formed by combining these groups, Raf represents a perfluoroalkylene group having from 1 to 5 carbon atoms and W represents a hydrogen atom, a fluorine atom or an alkyl group; X represents -L b -SO 3 M 0 , wherein M 0 represents a hydrogen atom or a cation, and L b represents a methylene group.