Invention Grant
- Patent Title: Magnetic recording medium including compound having a salt structure and magnetic recording and reproducing apparatus
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Application No.: US16830752Application Date: 2020-03-26
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Publication No.: US11276429B2Publication Date: 2022-03-15
- Inventor: Wataru Kikuchi , So Matsuyama
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JPJP2019-061238 20190327
- Main IPC: G11B5/71
- IPC: G11B5/71 ; G11B5/78 ; G11B5/733 ; G11B5/706 ; G11B5/702 ; G11B5/708 ; G11B5/735

Abstract:
The magnetic recording medium includes: a non-magnetic support; and a magnetic layer including ferromagnetic powder, in which the magnetic layer includes a compound having a salt structure, and the salt structure is an ammonium salt structure of an alkyl ester anion represented by the following Formula 1. In Formula 1, R represents an alkyl group having 7 or more carbon atoms or a fluorinated alkyl group having 7 or more carbon atoms, Z+ represents an ammonium cation, and a water contact angle on a surface of the magnetic layer is 80° or more and less than 100°. A magnetic recording and reproducing apparatus includes the magnetic recording medium.
Public/Granted literature
- US20200312362A1 MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING APPARATUS Public/Granted day:2020-10-01
Information query
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