ALUMINUM ALLOY SUPPORT FOR LITHOGRAPHIC PRINTING PLATES

摘要

An aluminum alloy support for lithographic printing plates produced by cold rolling an aluminum alloy plate composed substantially of Mg 0.05 to 3 wt%, Si 0.05 to 0.7 wt%, Zr 0.01 to 0.25 wt%, Fe 0.05 to 0.4 wt%, and Mn 0 to 0.4 wt% with the balance being Al and impurities, and imparting a grained surface to the plate surface has high mechanical strength, good heat softening resistance, excellent water retentive property, and long press life.