Aluminum alloy support for lithographic printing plates
AssigneesNippon Light Metal Company, Ltd., Fuji Photo Film Co., Ltd.
InventorsYasuhisa Nishikawa, Tadayuki Katoh, Misako Kawasaki, Kazushige Takizawa
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Abstract
An aluminum alloy support for lithographic printing plates produced by cold rolling an aluminum alloy composed substantially of Mg 0.05 to 3 wt %, Si 0.05 to 0.7 wt %, Zr 0.01 to 0.25 wt %, and Fe 0.05 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.
Claims7
A photosensitive lithographic printing plate comprising an aluminum alloy support plate and a photosensitive layer thereon, said plate having been produced by cold rolling into plate form an aluminum alloy consisting essentially of Mg 0.05 to 3 wt %, Si 0.05 to 0.7 wt %, Zr 0.01 to 0.25 wt %, and Fe 0.05 to 0.4 wt %, with the balance being Al and impurities, the plate surface having been subjected to a graining treatment.
Dependencies are inferred from the claim text.