Patent ID: 6245499
Filing Date: 2001-06-12
Classification: C09B,G03C,Y10S

Abstract:
A photothermographic material comprising at least one photosensitive layer, which comprises an organic silver salt, a silver halide, a reducing agent, a hydrazine derivative of the following formula (H): ##STR538##whereinR.sub.01 is an aromatic or heterocyclic group;R.sub.02 is an alkyl, aryl heterocyclic, alkoxy, aryloxy, amino or hydrazino group, when G.sub.01 is --CO--, and R.sub.02 is a hydrogen atom, alkyl, aryl, heterocyclic, alkoxy, aryloxy, amino or hydrazino group when G.sub.01 is --SO.sub.2 --, --SO--, --P(.dbd.O)(--R.sub.03)--, --CO--CO--, thiocarbonyl or iminomethylene group;A.sub.01 and A.sub.02 are both hydrogen atoms, or one of A.sub.01 and A.sub.02 is a hydrogen atom and the other is a substituted or unsubstituted alkylsulfonyl, arylsulfonyl or acyl group; andR.sub.03 is a group selected from the same range as defined for R.sub.02 and may be identical with or different from R.sub.02, and a sensitizing dye of the following formula (D-I): ##STR539##wherein each of R.sub.51 and R.sub.52, which may be identical or different, is a substituted alkyl group; R.sub.53 is a hydrogen atom, lower alkyl, lower alkoxy, phenyl, benzyl or phenethyl group; V is a hydrogen atom, lower alkyl, alkoxy, halogen atom or substituted alkyl group; Z.sub.1 is a group of nonmetallic atoms necessary to complete a five- or six-membered nitrogenous heterocycle; X.sub.1 is an acid anion; letters m, p and q are independently equal to 1 or 2, with the proviso that q is 1 when the dye forms an intramolecular salt.