Patent ID: 6514678
Filing Date: 2003-02-04
Classification: G03C

Abstract:
A photothermographic material comprising a support having thereon at least one imaging layer comprising a hydrophilic binder, and having in reactive association:a) a photosensitive silver halide, b) a non-photosensitive source of reducible silver ions, and c) a reducing composition for said reducible silver ions, said photothermographic material further comprising: d) an antifoggant that has a pKa of 8 or less and is represented by the following Structure I: R1â€”SO2â€”C(R2)R3â€”(CO)mâ€”(L)nâ€”SGâ€ƒâ€ƒI â€ƒwherein R1 is an aliphatic or cyclic group, R2 and R3 are independently hydrogen or bromine as long as at least one of them is bromine, L is an aliphatic divalent linking group, m and n are independently 0 or 1, and SG is a solubilizing group having a pKa of 8 or less.