| 摘要 |
<p>High contrast negative images are obtained by developing a silver halide photographic element, in the presence of a hydrazine compound, with an alkali aqueous developing solution which contains a combination of developing agent comprising hydroquinone or substituted hydroquinone and a superadditive developing agent and an antioxidant, wherein the developing solution has a pH lower than about 11, preferably from 9.5 to 11.0 and wherein the silver halide photographic element comprises an emulsion layer including surface latent image negative type silver halide grains in reactive association with a contrast promoting agent, preferably a diarylcarbinol compound, more preferably a diarylmethanol compound in a quantity useful to increase contrast. The aryl hydrazine compound is represented by the following formula: Ar-NRNR1-G-X<+>A<-> (I) wherein Ar is an aryl group, G is CO, SO, SO2, PO2, PO3 or C=NR2; X<+> is a radical containing a cationic group, R, R1, R2, which can be the same or different, are hydrogen, alkyl of 1 to 6 carbon atoms and alkyl sulfinyl of 1 to 6 carbon atoms, and A<-> is an anion.</p> |
