Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1997-09-26
1999-08-17
Letscher, Geraldine
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430543, 430556, G03C 108, G03C 726, G03C 732
Patent
active
059392444
ABSTRACT:
The invention provides a photographic yellow image dye-forming coupler represented by Formula I: ##STR1## wherein R.sub.1 is a substituent group; TG is a thiophene group; and X is hydrogen or a coupling-off group. The invention also provides a photographic element comprising a silver halide emulsion layer having associated therewith a dye-forming coupler of Formula I, as well as a process for forming an image in such a photographic element.
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patent: 3048194 (1962-08-01), Weissberger et al.
patent: 3265506 (1966-08-01), Weissberger et al.
patent: 3447928 (1969-06-01), Loria
patent: 4106942 (1978-08-01), Tanaka et al.
Abstract--JP 02006947.
Merkel Paul B.
Poslusny Jerrold N.
Steele David A.
Anderson Andrew J.
Eastman Kodak Company
Letscher Geraldine
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