发明授权
- 专利标题: Patterned medium with magnetic pattern depth relationship
- 专利标题(中): 具有磁图深度关系的图案化介质
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申请号: US11724328申请日: 2007-03-15
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公开(公告)号: US07898768B2公开(公告)日: 2011-03-01
- 发明人: Yoshiyuki Kamata , Masatoshi Sakurai , Satoshi Shirotori , Kaori Kimura
- 申请人: Yoshiyuki Kamata , Masatoshi Sakurai , Satoshi Shirotori , Kaori Kimura
- 申请人地址: JP Tokyo
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JP Tokyo
- 代理机构: Nixon & Vanderhye, PC
- 优先权: JP2006-072857 20060316
- 主分类号: G11B5/82
- IPC分类号: G11B5/82
摘要:
A patterned media has a substrate, and a magnetic recording layer on the substrate including protruded magnetic patterns and a nonmagnetic material filled in between the protruded magnetic patterns. In the patterned media, a depth Db and a depth Da, which are defined that Db is a depth from a surface of the magnetic patterns to a surface of the nonmagnetic material filled in a first central part between the magnetic patterns adjacent to each other in a cross-track direction or a down-track direction, and Da is a depth from a surface of the magnetic patterns to a surface of the nonmagnetic material filled in a second central part in a portion surrounded by the magnetic patterns, have a relationship that the depth Da is greater than the depth Db.
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