Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1994-01-12
1995-10-31
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430506, 430549, 430554, 430555, 430557, 430558, G03C 146
Patent
active
054628423
ABSTRACT:
The invention provides a photographic element and process of forming an image where the element is a multicolor photographic element comprising at least one light sensitive photographic silver halide emulsion layer sensitive to blue light and containing a yellow image dye-forming coupler, at least one light sensitive photographic silver halide emulsion layer sensitive to green light: and containing a magenta image dye-forming coupler, and at least one light sensitive photographic silver halide emulsion layer sensitive to red light and containing a cyan dye-forming coupler,
wherein the yellow image dye-forming coupler has the formula I: ##STR1## wherein t-Bu is a tertiary butyl group, Ph is an unsubstituted phenyl ring or one containing up to 5 substituents, and Y is a heterocyclic ring, substituted or non, which is capable of leaving upon reaction if the coupler with oxidized developer; and
wherein said at least one light sensitive photographic silver halide emulsion layer sensitive to blue light and containing the yellow image dye-forming coupler, or another light sensitive photographic silver halide emulsion layer sensitive to blue light and containing a yellow image dye-forming coupler has associated therewith a magenta image dye-forming coupler.
REFERENCES:
patent: 4273861 (1983-06-01), Shiba et al.
patent: 4614709 (1986-09-01), Sasaki et al.
patent: 5066574 (1991-11-01), Kubota et al.
patent: 5215877 (1993-06-01), Tomotake et al.
Edwards Larry D.
Hibbs Richard E.
Romano, Jr. Charles E.
Bowers Jr. Charles L.
Eastman Kodak Company
Kluegel Arthur E.
Letscher Geraldine
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