Photographic element containing high dye-yield couplers

摘要

Disclosed is a photographic element containing a light sensitive silver halide emulsion layer having associated therewith a coupler represented by Formula I: wherein COUP is a coupler parent group capable of reacting with an oxidized developer to form a first dye and is bonded at a coupling position to the group wherein X is O or NSO2R; R is an alkyl or aryl group; and DYE is a releasable second dye that is after release the same color as the first dye and is linked to OC=X by a moiety of the DYE having Formula (IA): wherein R<2> is a substituent; provided there is contained in the coupler of Formula I at least one group of Formula IB: wherein L is a divalent linking group and m is 0 or 1; and Sol is a group containing an acidic hydrogen selected from the group consisting of -ArOH, -NHSO2R<1> and -SO2NHR<1>, in which Ar is an aromatic group and each R<1> is a substituent; provided further that the pKa of an acidic hydrogen of Sol is less than 8.8.