Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1994-07-11
1995-10-17
Chea, Thorl
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430203, 430523, 430600, 430603, 430604, 430607, 430611, 430613, 430570, G03L 1498
Patent
active
054590280
ABSTRACT:
Heat-developable photographic recording materials comprising (a) at least one binder layer coated on a support, the binder layer containing at least one light-sensitive silver halide and a light-insensitive silver salt of a fatty acid; and in the binder layer or in another layer in reactive relationship to the binder layer (b) at least one reducing agent and (c) a stabilizer selected from the group of hexamethylene tetramine and salts thereof, triazaadamantane and salts thereof, and compounds that can be derived from hexamethylene tetramine by exchanging one or more --CH.sub.2 -- groups with --S--, --SO--, or --SO.sub.2 -- provide excellent stability during storage and can be manufactured easily and inexpensively and which presents minimal environmental or health risks.
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Chemical Abstracts, The Study of Photographic Activity of Azaadamantane, Chemical Abstracts, 113:68189a, 602, 1990.
Van Allan et al., Photothermographic Element, Composition and Process, Research Disclosure, No. 14724, 22-24, Jul. 1976.
Houle, Conrad G., Antifoggants in Heat Developable Photographic Materials, Research Disclosure, No. 17039, 41-43, Jun. 1973.
Carpenter et al., Photothermographic Silver Halide Systems, Research Disclosure, No. 17029, 9-15, Jun. 1978.
Lauf, Paul W., Photothermographic Silver Halide Systems, Research Disclosure, No. 29963, 208-214, Mar. 1989.
Chea Thorl
E. I. Du Pont de Nemours and Company
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