MANUFACTURE OF ALUMINUM FOIL USED AS SUPPORT OF LITHOGRAPHIC PRINTING PLATE

摘要

PROBLEM TO BE SOLVED: To provide a DTR material exhibiting no horseshoe shape on a white point and non-image area on an image area after exposure and development in the material for manufacturing a lithographic printing plate having excellent printability. SOLUTION: The method for manufacturing an aluminum foil roughed and anodized as a support and a silver complex diffused transfer reversal material containing photosensitive silver halide emulsion coating comprises the step of corona treating the roughed and anodized foil in a corona station having a roller and at least one electrode coated by using a dielectric coating before the foil is coated with a photosensitive layer.