Patent ID: 6900006
Filing Date: 2005-05-31
Classification: G03C,Y10S

Abstract:
1. 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 R q is 0 to 4; Z providing that each R 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 R each R one of R s is 0 to 4; provided that (a) when one of R (b) at least one of R