公开(公告)号：USH2048H1

公开(公告)日：2002-09-03

申请号：US08388600

申请日：1995-02-14

申请人： Haixing Wan ,  Diane Zhang ,  David Carlson ,  Alan A. Bornstein

发明人： Haixing Wan ,  Diane Zhang ,  David Carlson ,  Alan A. Bornstein

IPC分类号： G03C518

摘要： A non-hydroquinone photographic developer composition comprising: (a) a developer selected from the group consisting of ascorbic acid and sugar-type derivatives thereof, or alkali metal salts and mixtures thereof, in an amount of 0.1 to 0.4 mol/liter (mol/l); (b) an effective amount of an auxiliary developing agent comprising a 3-pyrazolidone compound, an aminophenol or a mixture thereof; (c) an alkali metal sulfite in an amount less than or equal to 0.32 mol/l; (d) an alkali metal carbonate in an amount of 0.1 to 0.4 mol/l; (e) an alkali metal hydroxide in an amount of from 0.08 to 2.0 mols/l; (f) with the developer composition having a pH of 11.8 or higher at 25° C.; and (g) the developer composition does not contain an alkanolamine or contains an alkanolamine in an amount of less than 5 g/l; where the developer composition is useful for processing standard rapid access films while showing an especially advantageous effect in the processing of silver halide emulsions containing a hydrazine compound to achieve lith quality, and high dot quality in a stable development solution.