Patent ID: 7384732

Claim:
A method of manufacturing a photothermographic material comprising forming on at least one side of a support, an image forming layer comprising at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder and at least one non-photosensitive layer above the image forming layer relative to the support, wherein 50% by weight or more of the binder is formed by a polymer latex, (1) both the image forming layer and the non-photosensitive layer are formed with aqueous coating solutions, and (2) a coating solution for the image forming layer contains ammonium phthalate, and (3) a pH of the coating solution for the image forming layer is from 5.0 to 7.8, and a pH of a coating solution for the non-photosensitive layer is from 4.5 to 7.0, wherein a pH difference between the coating solution for the image forming layer and a coating solution for the non-photosensitive layer is 2.0 or less.