Patent ID: 6900006

Claim:
A photographic element comprising at least one light-sensitive silver halide emulsion layer having associated therewith in the same dispersion a de-aggregating compound of formula (I), at least one heterocyclic cyan dye-forming coupler of formula (II) and a stabilizer of formula (III): wherein the de-aggregating compound has the formula (I) wherein A is a hydrogen-bond-accepting hetero-atom or -group; Y is a hydrogen-bond-donating hetero-atom or -group; L is a linking group that is partially or wholly conjugated with A and linked to A by a carbon atom; n is 1, 2 or 3 hydrogen-bond-containing moieties; and (B) comprises the remaining atoms for completion of an unsubstituted or substituted heterocyclic ring or ring system containing the hydrogen bond-accepting hetero-atom or -group, which may contain one or more other heteroatoms selected from nitrogen, oxygen and sulfur; and wherein the heterocyclic cyan dye-forming coupler has the formula (II): wherein R 1 is hydrogen or a substituent; R c is a substituent; and q is 0 to 4; Z a represents the atoms necessary to complete an unsubstituted or substituted 5- to 10-membered heterocyclic ring system which may contain one or more other heteroatoms selected from nitrogen, oxygen and sulfur; providing that each R c is attached to a carbon atom of the ring; and X is selected from hydrogen or halogen or a group which is separable by the reaction of coupler with an oxidized colour developing agent; and wherein the stabilizer of formula (III) has the formula wherein R 5 is an electron-donating group; R 6 is a substituent; each R 7 is an independently selected substituent; or one of R 5 and R 6 may join with R 7 to form an unsubstituted or substituted 5- to 10-membered ring system which may contain one or more heteroatoms selected from nitrogen, oxygen and sulfur; and s is 0 to 4; provided that (a) when one of R 5 and R 6 is a hydroxy group then the other may not be an arylsulfonamido or arylsulfamoyl substituent, and (b) at least one of R 5 , R 6 and R 7 contains a ballast group comprising at least 8 carbon atoms.