| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithographic printing original plate in which wear resistance and scumming property are compatible with each other at a high level, an aluminum support for a lithographic printing plate capable of producing the lithographic printing original plate, and a production method therefor. SOLUTION: The aluminum support for a lithographic printing plate, the production method therefor and the lithographic printing original plate are obtained by successively subjecting at least one face of an aluminum plate, under a specified condition respectively, to mechanically roughening treatment for performing mechanical roughening (a), alkaline etching treatment (b), desmut treatment (c), electrolytically roughening treatment (d) in a nitric acid water solution, alkaline etching treatment (e), desmut treatment (f), electrolytically roughening treatment (g) in a hydrochloric acid water solution, alkaline etching treatment (h) and desmut treatment (I), and then an anodic oxidized treatment is executed so that the anodic oxidized film amount becomes 1 g/m<SP>2</SP>or more and pore of the anodic acid film becomes a specified pore size distribution. COPYRIGHT: (C)2003,JPO |
