Silver salt diffusion transfer using organic phosphonic acid compounds

摘要

A method of forming an image by silver salt diffusion transfer comprising (a) developing a light-sensitive element including an imagewise exposed light-sensitive silver halide emulsion layer with an alkali processing solution comprising a silver halide solvent to convert at least a portion of unexposed silver halide in the emulsion layer into a transferable silver complex salt, and (b) transferring at least a portion of the silver complex salt to an image-receiving element containing a silver precipitating agent to form an image on the image-receiving layer, wherein the processing is carried out in the presence of an organic phosphonic acid compound.