METHOD FOR MANUFACTURING LITHOGRAPHIC PRINTING PLATE SUPPORT, LITHOGRAPHIC PRINTING PLATE SUPPORT, AND LITHOGRAPHIC PRINTING PLATE

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a lithographic printing plate support that can obtain a lithographic printing plate which exhibits a high resistance to scumming when served as a presensitized plate and prevents bulges causing image dropouts from forming.

SOLUTION: The method for manufacturing a lithographic printing plate support is provided for anodizing an aluminum plate to obtain a lithographic printing plate support. The method includes: an anodizing treatment step of conducting the anodizing treatment; and a pre-processing step of bringing, prior to the anodizing treatment, the aluminum plate into contact with hot water or water vapor, wherein the temperature of the hot water is at 80 to 100°C, the temperature of the water vapor is at 100 to 350°C.

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