Patent ID: 6686135
Filing Date: 2004-02-03
Classification: G03C

Abstract:
A two-part aqueous black-and-white developing composition kit comprising:a) an aqueous first solution having a pH of from about 3 to about 6 that is essentially free of dihydroxybenzene compounds and comprises: at least 0.05 mol/l of an ascorbic acid developing agent, a water-miscible hydroxy-containing organic solvent having a molecular weight of from about 50 to about 200, the weight ratio of said organic solvent to water being from about 0.05:1 to about 8:1, and at least 0.0005 mol/l of a 3-pyrazolidone co-developing agent, and b) a second aqueous solution having a pH of from about 8 to about 12 and comprising a borate buffer and at least 0.05 mol/l of sulfite ions.