Patent ID: 6090538
Filing Date: 2000-07-18
Classification: G03C

Abstract:
A heat developable light-sensitive material comprising an organic acid silver and silver halide, which contains:a compound represented by the following formula (A): ##STR50## wherein R represents a hydrogen atom or an alkyl group having from 1 to 10 carbon atoms and R' and R"" each represents an alkyl group having from 1 to 5 carbon atoms; anda hydrazine derivative represented by the following formula (II), (III), (IV) or (V): ##STR51## wherein R.sub.10 is a heterocyclic group, R.sub.11 to R.sub.13 each represents an aromatic group or an unsaturated heterocyclic group, A.sub.10 to A.sub.13, A.sub.20 to A.sub.23 each represent a hydrogen atom, or A.sub.10 to A.sub.13 represent a hydrogen atom and A.sub.20 to A.sub.23 represents a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group or a substituted or unsubstituted acyl group;in formula (III), R.sub.21 represents an alkyl group substituted by at least one electron-withdrawing group, an aryl group substituted by at least one electron-withdrawing group, a heterocyclic group, an amino group, an alkylamino group, an arylamino group, a heterocyclic amino group, a hydrazino group, an alkoxy group or an aryloxy group;in formula (IV), R.sub.22 represents an amino group, an alkylamino group, an arylamino group, a heterocyclic amino group, a hydrazino group, an alkoxy group, an aryloxy group, an alkyl group or an aryl group;in formula (V), G.sub.13 represents an --SO.sub.2 -- group, an --SO-- group, a ##STR52## group (wherein R.sub.30 represents a hydrogen atom, an alkyl group, an aryl group, an unsaturated heterocyclic group, an alkoxy group, an aryloxy group, an amino group or a hydrazino group), a thiocarbonyl group or an iminomethylene group, and R.sub.23 represents an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, an alkylamino group, an arylamino group, a heterocyclic amino group or a hydrazino group.