Invention Application
- Patent Title: SINGLE-SIDED PERPENDICULAR MAGNETIC RECORDING MEDIUM
- Patent Title (中): 单面圆形磁记录介质
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Application No.: US12709845Application Date: 2010-02-22
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Publication No.: US20100215992A1Publication Date: 2010-08-26
- Inventor: Junichi HORIKAWA , Kenji AYAMA , Masafumi ISHIYAMA , Toshikatsu YAMAGUCHI , Yusuke SETO
- Applicant: Junichi HORIKAWA , Kenji AYAMA , Masafumi ISHIYAMA , Toshikatsu YAMAGUCHI , Yusuke SETO
- Applicant Address: JP Tokyo SG Singapore
- Assignee: HOYA CORPORATION,HOYA MAGNETICS SINGAPORE PTE. LTD.
- Current Assignee: HOYA CORPORATION,HOYA MAGNETICS SINGAPORE PTE. LTD.
- Current Assignee Address: JP Tokyo SG Singapore
- Priority: JP2009-039432 20090223; JP2010-034300 20100219
- Main IPC: G11B5/706
- IPC: G11B5/706
Abstract:
A magnetic recording medium used for perpendicular magnetic recording, the magnetic recording medium comprising: a substrate having a first surface and a second surface opposite to the first surface; a magnetic recording medium constituent layer formed on the first surface of the substrate, the magnetic recording medium constituent layer including at least a magnetic recording layer; a non-magnetic metal film formed on the second surface of the substrate; and a carbon-based protective film formed on the non-magnetic metal film.
Information query
IPC分类:
