PURPOSE: To obtain a heat developable photosensitive material excellent in preservability and giving satisfactory image discriminating ability. ;CONSTITUTION: This heat developable photosensitive material has at least photosensitive silver halide, a binder and a precursor of a reducing agent represented by general formula I or II on the base. In the formulae I, II, each of R1-R4 is H, alkyl, aryl or a heterocyclic group and R5 is aryl or a heterocyclic group.;COPYRIGHT: (C)1993,JPO&Japio
展开▼