Patent ID: 6680165
Filing Date: 2004-01-20
Classification: G03C

Abstract:
A color negative photographic element comprising a light sensitive silver halide emulsion imaging layer having associated therewith a cyan dye-forming coupler dispersion comprising a first phenolic cyan dye-forming coupler, a second phenolic cyan dye-forming coupler, a substantially non-color-developable phenolic activator compound, and a non-phenolic organic coupler solvent having a boiling point of at least 150C; whereinthe first phenolic cyan dye-forming coupler is represented by the Formula [P]: â€ƒwhere R1 represents a ballast group, n is from 0 to 3 and each EW represents independent electron withdrawing groups, and X represents a hydrogen atom or a coupling off group; the second phenolic cyan dye-forming coupler is represented by [AP] and comprises at least one of Formula [AP-I] or Formula [AP-II]: â€ƒwhere R2 represents a ballast group, R3 represents an alkyl group, R4 represents a hydrogen or halogen atom or an alkyl or an acylamino group, and Y represents a hydrogen atom or a coupling off group; â€ƒwhere R5 and R6 each independently represents an aliphatic group, an aryl group or a heterocyclic group, at least one of which is a ballast group, and Z represents a hydrogen atom or a coupling off group; the substantially non-color-developable phenolic activator compound is represented by the Formula [ACT]: â€ƒwhere q is from 1 to 3, and each R7 independently represents an aliphatic group, a cycloalkyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylcarbonyl group, an arylcarbonyl group, an acyloxy group, a sulfamoyl group, a sulfonamido group, a sulfonyl group, an aryl group, an alkoxy group, or a halogen atom; and wherein compounds represented by [P], [AP], and [ACT] are present in the coupler dispersion in relative weight fractions of from 0.30 to 0.65 for [P], from 0.15 to 0.35 for [AP], and from 0.15 to 0.35 for [ACT], provided the sum of the relative weight fractions for [P]+[AP]+[ACT]=1, and the weight ratio of the non-phenolic coupler solvent in the coupler dispersion is from 0.30 to 2.0 relative to the sum of [P]+[AP]+[ACT].