Patent ID: 7402380

Claim:
A photothermographic material comprising, 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, wherein (1) the binder comprises a polymer latex having a monomer component represented by the following formula (M): CH 2 ═CR 01 —CR 02 ═CH 2 Formula (M) wherein R 01 and R 02 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a halogen atom, or a cyano group; and R 01 and R 02 are not simultaneously a hydrogen atom; (2) the image forming layer comprises a compound represented by the following formula (SA): wherein M represents a hydrogen atom or a cation having a valency of k; R represents a substituent; n represents an integer of from 1 to 4; when n is 2 or more, a plurality of R may be the same or different from one another; k represents an integer of 1 or more; and when M is a hydrogen atom, k is 1; and (3) the photothermographic material further comprises a water soluble metal phthalocyanine dye represented by formula (PC-1): wherein, M represents a metal atom; R 1 , R 4 , R 5 , R 8 , R 9 , R 12 , R 13 , and R 16 each independently represent a hydrogen atom or a substituent; at least one of R 1 , R 4 , R 5 , R 8 , R 9 , R 12 , R 13 , and R 16 is a group represented by following formula (II): -L 1 -R 17 Formula (II) wherein L 1 represents a group selected from **—SO 2 —*, **—SO 3 —*, **—SO 2 NR N —*, **—SO—*, **—CO—*, **—CONR N —*, **—COO—*, **—COCO—*, **—COCO 2 —*, and **—COCONR N —*; ** denotes a bond with a phthalocyanine skeleton at this position, and * denotes a bond with R 17 at this position; R N represents a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an acyl group, an alkoxycarbonyl group, a carbamoyl group, a sulfonyl group, or a sulfamoyl group; and R 17 represents an alkyl group, an aryl group, or a heterocyclic group, wherein R 17 is substituted by a hydrophilic group; and R 2 , R 3 , R 6 , R 7 , R 10 , R 11 , R 14 , and R 15 represent a hydrogen atom.