Patent ID: 7147997

Claim:
A silver salt photothermographic dry imaging material comprising a support having thereon a photosensitive layer and a polymer layer, wherein the polymer layer is provided as a back coating layer on a side of the support opposite the photosensitive layer and the polymer layer comprises a cellulose ester and a copolymer of: (i) a fluorine containing acrylate or a fluorine containing methacrylate represented by Formula (1): wherein, R 1 represents a hydrogen atom, a fluorine atom or a methyl group; R 2 represents a methylene group, an ethylene group or a 2-hydrokypropylene group; X represents a hydrogen atom or a fluorine atom; and n represents an integer of 1 to 4; and (ii) a monomer having a hydrophobic group in the molecule; and wherein the copolymer is produced by a pearl polymerization method.