Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1994-03-17
1995-09-19
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430544, 430557, 430957, 430359, G03C 146
Patent
active
054514932
ABSTRACT:
The present invention provides a photographic element comprising a support bearing a blue-light sensitive silver halide emulsion layer containing an acylacetanilide yellow image dye-forming coupler having formula I or II: ##STR1## wherein: R.sub.a is a substituted or unsubstituted alkyl groups, alkoxy group or aryloxy group;
R.sub.b is a substituted or unsubstituted alkyl or aryl group;
R.sub.c is hydrogen or a substituted or unsubstituted alkyl group;
R.sub.1 is a substituent;
n is an integer from 0 to 2;
R.sub.2 is selected from the group consisting of halogen, trifluoromethyl, and substituted or unsubstituted alkoxy and aryloxy;
R.sub.3 is substituted or unsubstituted alkyl;
R.sub.4 is hydrogen, halogen, alkoxy carbonyl (--CO.sub.2 R), carbamoyl (--CONRR'), carbonamido (--NRCOR'), sulfonamido (--NRSO.sub.2 R') or trifluoromethyl; and
X is hydrogen or a coupling-off group;
and wherein the blue-light sensitive silver halide emulsion layer has associated therewith a development inhibitor releasing coupler. The invention also provides a method of forming an image in such an element.
REFERENCES:
patent: 3973968 (1976-08-01), Fujiwhara et al.
patent: 4022620 (1977-05-01), Okumura et al.
patent: 4026709 (1977-05-01), Piller et al.
patent: 4980267 (1990-12-01), Taber
patent: 5066574 (1991-11-01), Kubota et al.
Clark Bernard A.
Merkel Paul B.
Merrill James P.
Poslusny Jerrold N.
Stanley Paul L. R.
Bowers Jr. Charles L.
Eastman Kodak Company
Kluegel Arthur E.
Letscher Geraldine
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