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. 29, 2003
Filed:
Jul. 09, 2001
Keitarou Yamaguchi, Shizuoka, JP;
Mitsubishi Aluminum Kabushiki Kaisha, Tokyo, JP;
Abstract
An aluminum alloy plate for a planographic printing plate capable of being provided with a satisfactory roughed surface by electrolytic etching. The aluminum alloy plate contains 0.1 to 0.6% of Fe, 0.01 to 0.2% of Si, 5 to 150 ppm of Cu, and balance of Al and unavoidable impurities and has a surface layer portion formed of a metastable phase dispersion layer in which metastable phase AlFe-based intermetallic compound particles are dispersed. The metastable intermetallic compound particles each act as a starting point for pits. The alloy plate is formed with a roughed surface which is reduced in unetching and uniformly formed with pits, by electrolytic etching.