Patent ID: 6291152
Filing Date: 2001-09-18
Classification: G03C

Abstract:
A photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a bicyclic azole dye-forming coupler, having appended to a ring carbon at a non-coupling position thereof a substituent group represented by the formula: ##STR26##wherein the arrow represents the point of attachment of the substituent group to a non-coupling position of the coupler;R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently selected hydrogen or substituent groups, provided that any two of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 may join to form a ring;R.sup.a and R.sup.b are independently hydrogen or a substituent;each R.sup.c and R.sup.d is an independently selected hydrogen or an alkyl or aryl group, provided that any two of them may join to form a ring and n is 1 to 10;R.sup.e is hydrogen or an alkyl or aryl group;each Y is an independently selected substituent group and m is from 0 to 4; andZ is a substituent selected from the group consisting of --C(O)R.sup.5, --S(O).sub.2 R.sup.5, --SOR.sup.5, --P(.dbd.O)(R.sup.6).sub.2 and --P(.dbd.O)(OR.sup.6).sub.2 in which R.sup.5 is selected from the group consisting of alkyl, aryl, heterocyclic, alkoxy, aryloxy, alkylamino, and arylamino groups and each R.sup.6 is independently selected from the group consisting of alkyl and aryl groups; provided that Z can form a ring with any one of R.sup.c and R.sup.d.