Photographic element having improved magenta dye light stability and process for its use
The invention provides a photographic element comprising a silver halide emulsion layer having associated therewith a dye-forming coupler represented by formula II: wherein X is hydrogen or a coupling-off group; R , R , and R are independently selected alkyl groups, provided that any two of R , R an...
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Hauptverfasser: | , , , , , , |
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | The invention provides a photographic element comprising a silver halide emulsion layer having associated therewith a dye-forming coupler represented by formula II: wherein X is hydrogen or a coupling-off group; R , R , and R are independently selected alkyl groups, provided that any two of R , R and R may join to form a ring; R is hydrogen or a substituent, provided that R and R may join to form a ring when R is a substituent; R is hydrogen or a substituent; Y is a substituent with at least one Y substituent having a formula selected from the group consisting of -CONRR, -NHCOR, and -SO2R, wherein R, R, and R are independently selected from the group consisting of H, alkyl, aryl, and heterocyclic groups and R is selected from the group consisting of an alkyl group, an aryl group, a heterocyclic group, -NRR, and -OR wherein R, R, and R are selected from the same group as R and n is from 1 to 5. The element exhibits improved magenta dye light stability. |
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