Photographic elements containing cyan dye-forming coupler having a sulfone ballast group

摘要

A photographic element comprises a light sensitive silver halide emulsion layer having associated therewith a cyan dye forming coupler having Formula (I):    whereinR₁ represents hydrogen or an alkyl group;R₂ represents an alkyl group or an aryl group;n represents 1, 2, or 3;each X is located at a position of the phenyl ring meta or para to the sulfonyl group and is independently selected from the group consisting of alkyl, alkenyl, alkoxy, aryloxy, acyloxy, acylamino, sulfonyloxy, sulfamoylamino, sulfonamido, ureido, oxycarbonyl, oxycarbonylamino, and carbamoyl groups; andZ represents a hydrogen atom or a group which can be split off by the reaction of the coupler with an oxidized color developing agentprovided that when R₁ is an alkyl group of 4 or more carbon atoms, R₂ is a phenyl group which has an electron withdrawing group having a Hammett's Sigma value greater than 0 in a position meta or para to the amido group and has no group having a Hammett's Sigma value greater than 0 in a position ortho to the amido group.;The element forms a dye upon development which has a desirably low wavelength of maximum absorbance and low unwanted green absorbance.