| 摘要 |
Photographic elements are disclosed having a first coupler represented by the formula:COUP1-T-INHwherein COUP1 is a coupler moiety, T is a timing group bonded to INH through a substituted or unsubstituted methylene group contained in T and bonded to COUP1 through an O, S, or N atom contained in T, and INH is a development Inhibitor moiety, and wherein the T-INH group is able to undergo electron transfer along a conjugated system therein to cleave INH after T-INH is cleaved from COUP1, and a second coupler represented by the formula:COUP2-(TIME)n-S-R1-R2wherein COUP2 is a coupler moiety, TIME is a timing group, n is 0 or 1, R1 is a divalent linking group that does not include a heterocyclic ring attached directly to S, and R2 is a water solubilizing group.
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