Photothermographic element, composition and process

Details Photothermographic element, composition and process Photothermographic element, composition and process

G - Physics

03

C

96/75

G03C 1/42 (2006.01) G03C 1/498 (2006.01) G03C 5/26 (2006.01)

Patent

CA 1045876

Abstract 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 polybromoalkyl- sulronyl 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.

217922

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