Process for high contrast development of photographic elements

Details Process for high contrast development of photographic elements Process for high contrast development of photographic elements

G - Physics

03

C

96/57

G03C 5/305 (2006.01)

Patent

CA 1261189

Process For High Contrast Development of Photographic Elements ABSTRACT OF THE DISCLOSURE A process is disclosed for forming a high-contrast photographic image by developing a silver halide photographic element, including at least a silver halide emulsion layer, with an aqueous alkaline developing solution containing a dihydroxybenzene developing agent, a superadditive developing agent and an antioxidant at a pH of less than 12 in the presence of a hydrazine compound, an organic antifogging and contrast promoting agent selected within the class including a benzotriazole compound and a benzimidazole compound and a non polymeric hydroxymethylidyne group containing compound of formula: Image wherein R1 and R2 each independently represent a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, or R1 and R2 together complete a non aromatic cyclic group.

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