PHOTOTHERMOGRAPHIC ELEMENT, COMPOSITION AND PROCESS

摘要

or the Disclosure A stabilizer precursor comprising a compound which 13 a photolytically active polybrominated organic compound comprising (a) a 2,4-bis(tribromomethyl)-s-triazine, (b) a polybromoalkylsulronyl compound having an aromatic chromophore group, or (c) a combination of the described stabilizer precursors, in a photothermographic element or composition comprising photographic silver halide provides improved post-processing stability of the element or composition. The described stabilizer precursors are useful in photothermographic materials, for example, comprising photographic silver halide and an oxidation-reduction image-forming combination comprising a heavy metal salt oxidizing agent with a reducing agent. A developed visible image is provided after imagewise exposure by overall heating the photothermographic material to moderately elevated temperatures.