Invention Grant
- Patent Title: Magnetic recording medium with a non-magnetic granular layer under a plurality of granular magnetic layers and storage apparatus
- Patent Title (中): 具有多个粒状磁性层下方的非磁性粒状层的磁记录介质和存储装置
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Application No.: US13257227Application Date: 2010-03-02
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Publication No.: US08722212B2Publication Date: 2014-05-13
- Inventor: Ryo Kurita , Satoshi Igarashi , Isatake Kaitsu , Akira Kikuchi
- Applicant: Ryo Kurita , Satoshi Igarashi , Isatake Kaitsu , Akira Kikuchi
- Applicant Address: JP Tokyo
- Assignee: Showa Denko K.K.
- Current Assignee: Showa Denko K.K.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2009-069062 20090319
- International Application: PCT/JP2010/053358 WO 20100302
- International Announcement: WO2010/106911 WO 20100923
- Main IPC: G11B5/66
- IPC: G11B5/66
Abstract:
A magnetic recording medium includes a non-magnetic granular layer, and a recording layer provided on the non-magnetic granular layer, wherein the recording layer includes a first granular magnetic layer provided on the non-magnetic granular layer, and a second granular magnetic layer provided on the first granular magnetic layer, and a non-magnetic material magnetically separating metal grains of the non-magnetic granular layer is different from a non-magnetic material magnetically separating magnetic grains of the first granular magnetic layer.
Public/Granted literature
- US20120019959A1 MAGNETIC RECORDING MEDIUM AND STORAGE APPARATUS Public/Granted day:2012-01-26
Information query
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