Fluorescent brightener in image-receiving material for silver salt diffusion transfer process

A process of forming an image, comprising:

• imagewise exposing and development processing a silver salt diffusion transfer photographic material;
• said silver salt diffusion transfer photographic material comprising a light-sensitive material containing a silver halide photographic emulsion layer and an image-receiving material comprising a support having provided thereon an image-receiving layer containing physical development nuclei;
• said image-receiving layer containing gelatin, a water-soluble fluorescent brightening agent, and a water-soluble vinyl polymer having an average molecular weight of from about 10,000 to about 450,000, wherein the weight ratio of the water-soluble fluorescent brightening agent to the gelatin ranges from about 0.02/1 to about 0.5/1 and the weight ratio of the water-soluble vinyl polymer to the water-soluble fluorescent brightening agent ranges from about 0.1/1 to about 5/1;
• and development processing said silver salt diffusion transfer photographic material with a processing solution containing an amine compound shown by formula (A);
• ##STR16## wherein R.sub.A represents a hydrogen atom or a lower alkyl group containing from 1 to 4 carbon atoms, R.sub.B represents a hydrogen atom or a lower alkyl group containing from 1 to 4 carbon atoms, R.sub.C and R.sub.D each represents a hydrogen atom or a hydroxyl group, and p and q each represents 0 to 1, with the proviso that p and q do not simultaneously represent 0, wherein the water-soluble vinyl polymer is polyvinyl pyrrolidone, a copolymer of vinyl pyrrolidone and vinyl acetate, or a copolymer of ##STR17##