Magenta development inhibitor releasing coupler
AssigneeEastman Kodak Company
InventorsWilliam J. Begley, Teh H. Chen, David S. Bailey
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Abstract
Photographic compound (A) capable, upon oxidative coupling, of forming a dye, comprises in the coupling position, a coupling-off group that comprises in sequence, a releasable benzotriazole group attached to a triazole, tetrazole, oxadiazole, thiaoxadiazole, or thiadiazole inhibitor group represented by the formula: ##STR1## wherein R.sub.a, R.sub.b, R.sub.c R.sub.1, R.sub.2 and Q are as defined in the application. Such a compound (A) is useful in a photographic silver halide material and process to provide improved images.
Claims9
A photographic element comprising a support bearing at least one photographic silver halide emulsion layer and at least one magenta dye forming development inhibitor releasing coupler comprising a coupling-off group wherein
- the coupling-off group is represented by the formula:
- ##STR14## wherein R.sub.a, R.sub.b, R.sub.c, R.sub.1 and R.sub.2 individually are hydrogen, substituted or unsubstituted alkyl or aryl containing 1-12 carbon atoms, or halogen, nitro, ester, amide, or R.sub.1 and R.sub.2 together complete a substituted or unsubstituted 5, 6 or 7 membered ring system;
- R.sub.11 is an unsubstituted alkyl.
Dependencies are inferred from the claim text.