Invention Grant
- Patent Title: High density magnetic recording medium and cartridge including high density magnetic recording medium
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Application No.: US16969662Application Date: 2018-11-19
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Publication No.: US11302351B2Publication Date: 2022-04-12
- Inventor: Minoru Yamaga , Takanobu Iwama , Jun Takahashi
- 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: JPJP2018-026508 20180216
- International Application: PCT/JP2018/042721 WO 20181119
- International Announcement: WO2019/159464 WO 20190822
- Main IPC: G11B5/584
- IPC: G11B5/584 ; G11B5/592 ; G11B5/706 ; G11B5/008 ; G11B5/733 ; G11B20/12

Abstract:
A magnetic recording medium according to the present technology includes: a base material; and a magnetic layer, in which the magnetic recording medium has a tape shape that is long in a longitudinal direction and short in a width direction, the magnetic layer includes a data band and a servo band, a data signal being written to the data band, the data band being long in the longitudinal direction, a servo signal being written to the servo data, the servo band being long in the longitudinal direction, the degree of perpendicular orientation of the magnetic layer being 65% or more, a full width at half maximum of an isolated waveform in a reproduced waveform of the servo signal is 195 nm or less, the magnetic layer has a thickness of 90 nm or less, and the base material has a thickness of 4.2 μm or less.
Information query
IPC分类: