Invention Grant
- Patent Title: Patterned magnetic recording media, stamper for manufacture of patterned magnetic recording media, method of manufacturing patterned magnetic recording media, and magnetic recording/reproduction apparatus
- Patent Title (中): 图案化磁记录介质，用于制造图案化磁记录介质的压模，图案化磁记录介质的制造方法和磁记录/再现装置
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Application No.: US12419052Application Date: 2009-04-06
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Publication No.: US07655329B2Publication Date: 2010-02-02
- Inventor: Akira Kikitsu , Yoshiyuki Kamata , Takayuki Yamamoto , Hiroyuki Hyodo
- Applicant: Akira Kikitsu , Yoshiyuki Kamata , Takayuki Yamamoto , Hiroyuki Hyodo
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Pillsbury Winthrop Shaw Pittman, LLP
- Priority: JP2005-024160 20050131
- Main IPC: G11B5/66
- IPC: G11B5/66
Abstract:
According to one embodiment, a patterned magnetic recording media has a magnetic recording layer and a protective layer formed on a substrate, in which the magnetic recording layer including a magnetic material patterned in tracks and a nonmagnetic material filled in between the tracks in a data area, and has a recessed portion formed in an area within 1 mm from an outer media end and extending to the media end. The recessed portion being formed 1 to 50 nm deeper than the data area.
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Information query
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