Patent ID: 6576415
Filing Date: 2003-06-10
Classification: G03C

Abstract:
A process for producing an aqueous dispersion comprising in the following order the steps of:(i) preparing a dispersion of photosensitive silver halide and a binder in an aqueous medium or preparing a dispersion of photosensitive silver halide and a surfactant in an aqueous medium; (ii) adding a first silver salt to the dispersion prepared in step (i); and (iii) adding a second silver salt to the dispersion prepared in step (ii), wherein said aqueous dispersion is substantially free of a water-soluble metal or ammonium salt of an aliphatic carboxylic acid with greater than 12 carbon atoms, said first silver salt is a substantially light-insensitive and substantially water-insoluble silver salt of an organic carboxylic acid, and said second silver salt has a water-solubility greater than 0.1 g in 1 L of water at 20Â° C.