Photographic element containing a high dye-yield coupler with methine dye chromophore

摘要

The invention provides a photographic element comprising a substrate bearing a photographic silver halide emulsion layer having associated therewith a high dye-yield coupler having the formula: wherein: COUP is a photographic coupler residue capable of coupling with oxidized color developer to form a first dye; T is a timing group; m is an integer from 0 to 2; L is a linking group selected from the group consisting of -OC(=O)-, -OC(=S)-, -SC(=O)-, -SC(=S)-, and -OC(=NSO2R) where R is substituted or unsubstituted alkyl or aryl; and DYE is a releasable second dye or dye precursor having a particular formula including a methine dye chromophore.