| 摘要 |
PURPOSE:To obtain sufficient contrast hardening power by incorporating at least one kind selected from specific hydrazine derivatives and at least one kind selected from specific compds. into an emulsion layer or other hydrophilic colloid layer. CONSTITUTION:This photosensitive material contains at least one kind selected from the hydrazine derivatives expressed by the formula I and at least one kind selected from the compds. expressed by the formula II in the emulsion layer or other hydrophilic colloidal layer. In the formula I, both A1 and A2 are a hydrogen atom or either thereof is a hydrogen atom and the other is a residual sulfinic acid group or acyl group; Ra denotes an aliphat. group, arom. group or heterocyclic group; Rb denotes a hydrogen atom, alkyl group or amino group; G1 denotes a carbonyl group, sulfonyl group, phosphoryl group or iminomethylene group. In the formula II, Yo denotes an adsorption accelerating group to silver halide; Ao denotes a bivalent combination group; B denotes an amino group, ammonium group and nitrogenous heterocyclic group; m denotes 1, 2 or 3; n denotes 0 or 1. The photographic characteristics of extremely hard contrast are thereby obtd. |
