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:
May. 02, 2006
Filed:
Jan. 16, 2003
Koichi Wago, Sunnyvale, CA (US);
Neil Deeman, Alamo, CA (US);
Jing Gui, Fremont, CA (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A method of simultaneously forming magnetic transition patterns in both side surfaces of a dual-sided magnetic or magneto-optical (MO) recording medium comprises steps of: (a) providing a dual-sided magnetic or MO recording medium having first and second opposing side surfaces; (b) providing a first magnetic stamper/imprinter having a first topographically patterned imprinting surface comprising a plurality of projections and depressions arranged in a first pattern corresponding to a first magnetic transition pattern to be formed in the first side surface; (c) providing a second magnetic stamper/imprinter having a second topographically patterned imprinting surface comprising a plurality of projections and depressions arranged in a second pattern corresponding to a second magnetic transition pattern to be formed in the second side surface, the second magnetic stamper/imprinter being formed from the first magnetic stamper/imprinter in a 'mother'/'son' relationship; (d) contacting the first side surface with the first topographically patterned imprinting surface of the first magnetic stamper/imprinter; (e) contacting the second side surface with the second topographically patterned imprinting surface of the second magnetic stamper/imprinter; and (f) simultaneously forming magnetic transition patterns in both side surfaces of the medium by contact printing.