Invention Grant
- Patent Title: Magnetic recording medium
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Application No.: US15928684Application Date: 2018-03-22
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Publication No.: US10803897B2Publication Date: 2020-10-13
- Inventor: Masaru Terakawa , Yoichi Kanemaki , Minoru Yamaga
- Applicant: Sony Corporation
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Wolf, Greenfield & Sacks, P.C.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@7de7641a
- Main IPC: G11B5/706
- IPC: G11B5/706 ; G11B5/70

Abstract:
A magnetic recording medium includes a nonmagnetic support body, and a magnetic layer containing magnetic powder, in which the magnetic powder contains ε:Fe2O3 crystal (including a case of substituting a portion of Fe site with a metal element M), a product of residual magnetization and a thickness of the magnetic layer is from 0.5 mA to 6.0 mA, and a squareness ratio which is measured in a longitudinal direction of the magnetic layer is 0.3 or less.
Public/Granted literature
- US20180226093A1 MAGNETIC RECORDING MEDIUM Public/Granted day:2018-08-09
Information query
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