Patent ID: 7022470

Claim:
A photothermographic imaging material comprising: photosensitive silver halide on at least one side of a support, at least one of compounds represented by the following general formula (1); wherein the L 11 to the L 17 represent each independently a hydrogen atom, a halogen atom, an amino group, an alkylthio group, an arylthio group, a lower alkyl group, a lower alkoxy group, an aryloxy group, an aryl group or a heterocyclic group, or a non-metal atom group required for bonding the L 11 and the L 12 , the L 12 and the L 13 , the L 13 and the L 14 , the L 15 and the L 16 , and the L 16 and the L 17 , respectively, to form 5- to 7-membered rings; the R 1 and the R 2 represent each independently an aliphatic group; the R 1 and the L 11 , and the R 2 and the L 14 can be bonded each other to form a 5- to 7-membered cyclic structure respectively; the Ar 1 and the Ar 2 represent each independently an aryl group or a heterocyclic group; the X 11 represents an ion required for offsetting electric charges in a molecules; and n represents the number of ions required for offsetting electric charges in the molecules, and a compound represented by the following general formula (7); wherein the R 11 and the R 12 represent each independently hydrogen atom, 3- to 10-membered nonaromatic cyclic group or 5- or 6-membered aromatic cyclic group; the R 13 and the R 14 represent each independently hydrogen atom, alkyl group; aryl group or a heterocyclic group, the Q represents a substituent on the benzene ring; n is 0 or an integer of 1 or 2; and the Q are same or different from one another when the Q is plural.