Silver halide photographic material

A photographic material comprising a light sensitive silver halide emulsion layer provided on a support, said material containing a compound represented by the formula:

• A-TIME-PUG,
• wherein A is a coupler group capable of a coupling reaction with an oxidized color developing agent, PUG is a photographically useful group, and TIME is a timing group joining said coupler and said photographically useful group and further wherein said timing group is cleavable from said coupler group on reaction of said coupler group with said oxidized color developing agent and further wherein the resulting cleaved timing and photographically useful group entity-TIME-PUG is able to undergo electron transfer along a conjugated system therein to cleave the PUG after the group-TIME-PUG is cleaved from said coupler group A and further wherein one end of TIME is connected with PUG through a methylene group contained in TIME and substituted by R1 and R2, wherein R1 and R2 are individually a hydrogen atom, an alkyl group or an aryl group and wherein the other end of TIME is connected to A at the coupling site of A through an O, S or N atom contained in TIME.