The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 1992
Filed:
Jan. 28, 1991
Yasuhisa Nishikawa, Shizuoka, JP;
Hiroshi Ikeda, Inazawa, JP;
Kazushige Takizawa, Shizuoka, JP;
Hirokazu Sakaki, Shizuoka, JP;
Nippon Light Metal Co. Ltd, Tokyo, JP;
Fuji Photo Film Co. Ltd, Minamiashigara, JP;
Abstract
An aluminum alloy substrate for a lithographic printing plate consisting essentially of an aluminum alloy plate containing 0.2 to 0.5% by weight of Si, 0.3 to 0.7% by weight of Fe, 0.004 to 0.02% by weight of Cu, 0.9 to 1.5% by weight of Mn, 0.05 to 0.3% by weight of Mg and 0.01 to 0.04% by weight of Ti and the balance of Al and impurities, in which the surface of said aluminum alloy plate is roughened electrolytically and anodized. The alluminum alloy substrate has high mechanical strength and can also rapidly print a large number of copies with less stain.