Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1997-06-27
1999-01-12
Huff, Mark F.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430605, 430619, 430620, 430603, G03C 109, G03C 1005, G03C 1053
Patent
active
058586377
ABSTRACT:
A process of preparing a photothermographic composition of enhanced photosensitivity is disclosed comprised of (a) precipitating light-sensitive silver halide grains in the presence of a non-aqueous polymeric peptizer and (b) then combining the silver halide grains with an oxidation-reduction image-forming combination comprised of an organic silver compound and a reducing agent for the silver organic compound. Light-sensitivity of the silver halide grains is enhanced by, prior to step (b), sensitizing the silver halide grains with a gold sensitizer dissolved in an aqueous medium.
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Eshelman Lyn M.
Gisser Kathleen R. C.
Irving Mark E.
Levy David H.
Eastman Kodak Company
Huff Mark F.
Thomas Carl O.
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