Dynamic magnetic information storage or retrieval – Record medium – Disk
Reexamination Certificate
2011-03-01
2011-03-01
Renner, Craig A. (Department: 2627)
Dynamic magnetic information storage or retrieval
Record medium
Disk
C428S842000
Reexamination Certificate
active
07898768
ABSTRACT:
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 Dband a depth Da, which are defined that Dbis 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 Dais 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 Dais greater than the depth Db.
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Kamata Yoshiyuki
Kimura Kaori
Sakurai Masatoshi
Shirotori Satoshi
Kabushiki Kaisha Toshiba
Nixon & Vanderhye PC
Renner Craig A.
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