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. 22, 2008
Filed:
Apr. 25, 2005
Yutaka Nakamura, Kawasaki, JP;
Hitoshi Komoriya, Kawasaki, JP;
Hiroyuki Suzuki, Kawasaki, JP;
Takao Hirahara, Kawasaki, JP;
Arata Ejiri, Kawasaki, JP;
Yutaka Nakamura, Kawasaki, JP;
Hitoshi Komoriya, Kawasaki, JP;
Hiroyuki Suzuki, Kawasaki, JP;
Takao Hirahara, Kawasaki, JP;
Arata Ejiri, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A magnetic pattern transfer method is disclosed. A magnetic pattern transfer master having a plurality of magnetic portions preformed with predetermined magnetic patterns is brought in proximity to a magnetic recording medium having a magnetic film to record the magnetic information, and a magnetic field is applied from an external source thereby to transfer the magnetic patterns to the magnetic recording medium. In order to improve the closeness between the magnetic film of the magnetic recording medium and the magnetic portions of the magnetic pattern transfer master, the magnetic patterns are transferred to the magnetic film of the magnetic recording medium during the process of fabricating the magnetic recording medium. Also, using a magnetic pattern transfer master with the width of each pattern groove of the magnetic patterns smaller than the width of a corresponding pattern protrusion, the relative position of the magnetic pattern transfer master is displaced, while at the same time transferring the magnetic patterns to the magnetic film of the magnetic recording medium a plurality of times.