Patent ID: 7211373

Claim:
A photothermographic material comprising: a support; and a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for a silver ion and a binder disposed on one surface of the support, wherein a silver behenate-content of the non-photosensitive organic silver salt is 40 to 70 mol %, and the photothermographic material comprises a compound that can be one-electron-oxidized to provide a one-electron oxidation product, which further releases at least 1 electron, during or after a subsequent reaction; wherein the compound that can be one-electron-oxidized to provide the one-electron oxidation product is selected from compounds of following 1 to 5: (1) a compound that can be one-electron-oxidized to provide a one-electron oxidation product, which further releases at least 2 electron, one of during and after a subsequent bond cleavage reaction; (2) a compound that has at least 2 adsorbable groups to the silver halide and can be one-electron-oxidized to provide a one-electron oxidation product, which further releases at least 1 electron, one of during and after a subsequent bond cleavage reaction; (3) a compound that can be one-electron-oxidized to provide a one-electron oxidation product, which further releases at least 1 electron after a subsequent bond formation; (4) a compound that can be one-electron-oxidized to provide a one-electron oxidation product, which further releases at least 1 electron after a subsequent ring cleavage reaction; and (5) a compound represented by X—Y, in which X represents a reducing group and Y represents a leaving group, and convertable by one-electron-oxidizing the reducing group to a one-electron oxidation product, which can be converted into an X radical by eliminating the leaving group in a subsequent X—Y bond cleavage reaction, 1 electron being released from the X radical.