Photothermographic imaging materials and antifoggants therefor

Details Photothermographic imaging materials and antifoggants therefor Photothermographic imaging materials and antifoggants therefor

1993-09-24

1999-08-17

Chea, Thorl

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430600, 430607, 430613, 430615, 430617, G03C 1498

Patent

active

059392487

ABSTRACT:
A photothermographic material having a photosensitive medium comprising: photosensitive silver halide, a reducible silver source, a reducing agent for silver ion, a hydrobromic acid salt of a nitrogen-containing heterocyclic ring or fused ring nucleus associated with a pair of bromine atoms CHARACTERIZED IN THAT the photosensitive medium additionally comprises as an antifoggant, substantially in the absence of an antifoggant effective amount of mercury and other heavy metal salts, a tribromomethyl ketone compound of general formula (I): ##STR1## in which; R represents an alkyl group, an aryl group, a carbocyclic ring or fused ring nucleus or a heterocyclic ring or fused ring nucleus.

REFERENCES:
patent: 5028523 (1991-07-01), Skoug

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