| 摘要 |
This invention provides a silver halide photographic element comprising a silver halide emulsion in reactive association with a dithiolone 1-oxide compound represented by the following formula: <IMAGE> wherein b is C(O), C(S), C(Se), CH2 or (CH2)2, and R1 and R2 are independently H, or aliphatic, aromatic or heterocyclic groups, alkoxy groups, hydroxy groups, halogen atoms, aryloxy groups, alkylthio groups, arylthio groups, acyl groups, sulfonyl groups, acyloxy groups, carboxyl groups, cyano groups, sulfo groups, or amino groups, or R1 and R2 together represent the atoms necessary to form a five or six-membered ring or a multiple ring system. It further provides a method of making a silver halide emulsion containing a dithiolone 1-oxide compound.
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