Invention Grant
- Patent Title: Magnetic recording apparatus with correlated main magnetic pole-to-shields spacing and main magnetic pole-to-medium layers spacing
- Patent Title (中): 磁记录装置具有相关的主磁极与屏蔽间距和主磁极至中间层间距
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Application No.: US12012241Application Date: 2008-01-31
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Publication No.: US07920359B2Publication Date: 2011-04-05
- Inventor: Yohji Maruyama , Nelson Cheng , Hideki Zaitsu , Hisao Okamoto
- Applicant: Yohji Maruyama , Nelson Cheng , Hideki Zaitsu , Hisao Okamoto
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Zilka-Kotab, PC
- Priority: JP2007-021550 20070131
- Main IPC: G11B5/127
- IPC: G11B5/127
Abstract:
Embodiments of the present invention achieve a high linear recording density and a high track recording density to thereby improve the areal recording density in a perpendicular magnetic recording apparatus having a magnetic head that includes a trailing shield and side shields around a main magnetic pole piece. According to one embodiment, in a magnetic recording apparatus, each of magnetic distances of various sorts is set so as to satisfy relationships of Lmag
Public/Granted literature
- US20080180861A1 Magnetic recording apparatus Public/Granted day:2008-07-31
Information query
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