Photographic processing composition comprising borate

A photographic processing composition having a pH of at least about 12 adapted for use with an additive color diffusion transfer film unit which comprises an aqueous sodium hydroxide solution, tetramethyl reductic acid, 2-methylthiomethyl-4,6-dihydroxy-pyrimidine, hydroxyethyl cellulose and sodium tetraborate decahydrate wherein said sodium tetraborate is present at a level of about 1 mmol per 10 cc of said composition.

The method which comprises contacting an exposed silver diffusion transfer film unit which comprises a support, carrying on one surface, a layer comprising silver-precipitating nuclei, and a silver halide layer;

• with a photographic processing composition comprising an aqueous alkaline solution having a pH of at least about 12, a silver halide developing agent, a silver halide solvent and a borate which is soluble in said aqueous alkaline solution;
• said borate being present at a level of about 0.25 mmol to 15 mmol of boron per 10 cc of said processing composition.

The method which comprises contacting an additive color diffusion transfer film unit which comprises a transparent support carrying, in order, an additive color screen;

• a layer comprising palladium metal silver precipitating nuclei and gelatin;
• a photosensitive silver halide emulsion layer;
• and an anti-halation layer with a processing composition comprising an aqueous sodium hydroxide solution, having a pH of at least about 12, hydroxyethyl cellulose, tetramethyl reductic acid, 2-methylthiomethyl-4,6-dihydroxy-pyrimidine, hydroxyethyl cellulose and sodium tetraborate decahydrate at a level of about 4.2 mmol of boron per 10 cc of said processing composition.