Patent ID: 6238855
Filing Date: 2001-05-29
Classification: C07D,G03C,Y10S

Abstract:
A photographic element comprising a support bearing one or more silver halide emulsions at least one of which comprises at least 50% silver chloride in association with one or more image dye-forming couplers and one or more DI(A)R couplers of formulae I or II: ##STR18##wherein:Z is a moiety which can react with oxidized developer to release a coupling-off group;R.sub.1 is a hydrogen atom or a group selected from a halogen atom and an unsubstituted or substituted alkyl, aryl, alkoxy, aryloxy, alkyl- or aryl-thio, amino, alkyl- or aryl-amino, carbonamido, carbamoyl, alkoxy- or aryloxy-carbonyl, alkyl- or aryl-carbonyl, sulfonyl and sulfonamido group;each of the R.sub.2 substituents is a halogen atom or a group selected from an unsubstituted or substituted alkyl, aryl, alkoxy, aryloxy, alkyl- or aryl-thio, amino, alkyl- or aryl-amino, carbonamido, carbamoyl, alkoxy- or aryloxy-carbonyl, alkyl- or aryl-carbonyl, sulfonyl and sulfonamido group;X represents the atoms required to make a second ring which is aromatic and contains at least one nitrogen atom;n is from 0 to the number of carbon atoms in the second ring, with the proviso that if R.sub.1 is hydrogen, n is at least 1;TIME is a timing group andj is 0,1 or 2,wherein the DI(A)R coupler comprises at least 30% to about 90% of the total amount of coupler and the total amount of coupler is the sum of the number of moles of image coupler and the number of moles of the DI(A)R coupler.