Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1995-03-30
1996-10-01
Letscher, Geraldine
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430504, 430505, G03C 108, G03C 726, G03C 732
Patent
active
055610366
ABSTRACT:
An improved photographic element comprises a support bearing at least one silver halide emulsion layer having associated therewith a hydroquinone compound that functions as a scavenger for oxidized developing agent. The hydroquinone compound has sufficient bulk that it is substantially non-diffusible in the photographic element and has in the two-position thereof an asymmetric tertiary carbamoyl substituent. These scavenger compounds exhibit very high activity, have excellent stability upon long-term storage and do not leave colored residues after processing.
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patent: 4252893 (1981-02-01), Iwamuro et al.
patent: 4476219 (1983-10-01), Sakanoue et al.
patent: 5264332 (1993-11-01), Otani et al.
Leone Ronald E.
Singer Stephen P.
Eastman Kodak Company
Letscher Geraldine
Lorenzo Alfred P.
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