- Patent Title: Fractionation method for magnetic recording-magnetic powder, fractionation apparatus for magnetic recording-magnetic powder, and method of producing magnetic recording medium
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Application No.: US15765416Application Date: 2016-10-27
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Publication No.: US11017808B2Publication Date: 2021-05-25
- Inventor: Kenji Katori
- Applicant: SONY CORPORATION
- Applicant Address: JP Tokyo
- Assignee: SONY CORPORATION
- Current Assignee: SONY CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: K&L Gates LLP
- Priority: JPJP2015-222234 20151112
- International Application: PCT/JP2016/004729 WO 20161027
- International Announcement: WO2017/081848 WO 20170518
- Main IPC: G11B5/714
- IPC: G11B5/714 ; G11B5/845 ; G11B5/842 ; H01F41/16 ; G11B5/706 ; G11B5/73
Abstract:
A fractionation method for magnetic recording-magnetic powder is provided. The method includes applying a magnetic field to a liquid that contains magnetic recording-magnetic powder dispersed therein, wherein the liquid is stored in a storage unit relatively shifting a position where the magnetic field is applied to the liquid; and separating the storage unit into two parts after the shift.
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