METHOD OF CHEMICAL-PHOTOGRAPHIC TREATMENT OF HALOGEN-SILVER PHOTOGRAPHIC MATERIALS

摘要

FIELD: photography. SUBSTANCE: photographic material consists of the backing and gelatinous emulsion layer containing silver bromide which is grown as envelope on calcium fluoride nuclei. Treatment involves development and fixing. Additional treatment is carried out in solution containing aluminium salt: aluminium chloride, aluminium-potassium sulfate, aluminium-ammonium sulfate, and water. Solution composition, g/l: aluminium salt 30-400; ammonium acetate 20-200, water up to 1 l. Method improves decrease optical density background from 0.34 to 0.01. EFFECT: decreased optical density of background, accelerated process. 2 cl, 2 tbl