1,2,4-triazole-releasing pyrazolone DIR couplers
AssigneeEastman Kodak Company
InventorsPaul B. Merkel, David A. Steele, Jerrold N. Poslusny
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Abstract
This invention provides a photographic element comprising a support bearing one or more silver halide emulsions and one or more pyrazolone magenta dye-forming DIR couplers of structure I: ##STR1## wherein: the R.sub.1 substituents are individually selected from halogen atoms and alkyl, phenyl, alkoxy, phenoxy, alkylthio, carbonamido, sulfonamido, carbamoyl, alkoxycarbonyl, and aryloxycarbonyl groups; n is 0 to 5; R.sub.2 is an alkyl group or a phenyl group; and R.sub.3 is an alkylthio group, an arylthio group, an alkoxycarbonyl group or an aryloxycarbonyl group.
Claims19
A photographic element comprising a support bearing one or more silver halide emulsions and one or more pyrazolone magenta dye-forming DIR couplers of structure I:
- ##STR14## wherein:
- the R.sub.1 substituents are individually selected from halogen atoms and alkyl, phenyl, alkoxy, phenoxy, alkylthio, carbonamido, sulfonamido, carbamoyl, alkoxycarbonyl, and aryloxycarbonyl groups;
- n is 0 to 5;
- R.sub.2 is an alkyl group or a phenyl group;
- and
- R.sub.3 is an alkylthio group, an arylthio group, an alkoxycarbonyl group or an aryloxycarbonyl group.
Dependencies are inferred from the claim text.