Photothermographic element and process

Details Photothermographic element and process Photothermographic element and process

1984-05-31

1985-10-22

Louie, Won H.

Radiation imagery chemistry: process, composition, or product th

Thermographic process

Heat applied after imaging

430617, 430542, 430936, G03C 102

Patent

active

045488975

ABSTRACT:
A silver image and dye image are provided in a photothermographic element comprising a support bearing, in reactive association, (A) a silver compound capable of forming a silver image, and (B) a dye-forming combination comprising (a) a cobalt (III) amine complex capable of releasing ammonia or an amine at processing temperature in the presence of silver and (b) an aromatic 1,2-dialdehyde capable of forming a dye upon reaction with an amine or ammonia. Improvements are provided in such an element by a cyclic imide melt former-silver solvent which is capable of promoting dye formation at processing temperature. A silver image and dye image are formed in such an exposed photothermographic element upon thermal processing. The photothermographic element optionally can comprise a dye image receiver layer.

REFERENCES:
patent: 3438776 (1969-04-01), Yudelson
patent: 4308341 (1981-12-01), DoMinh
patent: 4430420 (1984-02-01), Adin
patent: 4469773 (1984-09-01), Adin et al.

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