Patent ID: 6472135
Filing Date: 2002-10-29
Classification: G03C

Abstract:
A silver halide photographic element comprising at least one silver halide emulsion, said silver halide element further comprising an amido compound represented by Formula 1wherein INH is a development inhibitor; LINK is a linking or timing group and m is 0, 1 or 2; and R1 and R2 independently represents an aliphatic, aromatic or heterocyclic group, or R1 and R2 together with the nitrogen to which they are attached represent the atoms necessary to form a 5 or 6 membered ring or multiple ring system, or R1 and R2 are independently a â€”C(&boxH;O)(LINK)mâ€”INH group, or are substituted with an â€”NR3aC(&boxH;O)â€”(LINK)mâ€”INH group, with R3a being defined the same as R1 or R2; and wherein the compound of Formula 1 does not substantially react with oxidized developer to release INH; and a reductone compound represented by Formula 2wherein R7 and R8 are the same or different, and may represent H, alkyl, cycloalkyl, aryl, or an alkyl group with a solubilizing group, R7 and R8 may be joined to complete a heterocyclic ring, R4 and R5 are H, OH, alkyl, aryl, cycloalkyl, or may together represent an alkylidene group, n is 1 or 2 and R3 is H, alkyl, aryl, or CO2R6 where R6 is alkyl.