Patent ID: 6730465
Filing Date: 2004-05-04
Classification: G03C,Y10S

Abstract:
A photographic element comprising at least one light-sensitive silver halide emulsion layer having associated therewith a heterocyclic magenta or cyan dye-forming coupler of formula (I), whereinHET is a heterocyclic coupler comprising at least two fused rings and having at least one bridgehead nitrogen atom; S is bonded to a position of HET capable of releasing the heterocyclylthio moiety from HET upon reaction with oxidized developer; X is a heteroatom selected from nitrogen, oxygen and sulfur, bonded to the carbon atom bearing the exocyclic S and to other ring atoms only; and Z are the atoms necessary to complete an unsubstituted or substituted heterocyclic ring or ring system, which may contain one or more other heteroatoms selected from nitrogen, oxygen and sulfur; provided also that the heterocyclylthio moiety released upon reaction with oxidized developer does not significantly inhibit silver development nor cause a bleach acceleration effect.