Invention Grant
- Patent Title: Magnetic recording medium having characterized magnetic layer and magnetic recording and reproducing device
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Application No.: US17022886Application Date: 2020-09-16
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Publication No.: US11423933B2Publication Date: 2022-08-23
- Inventor: Megumi Nakano , Eiki Ozawa , Norihito Kasada
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JPJP2019-170512 20190919
- Main IPC: G11B5/706
- IPC: G11B5/706 ; G11B5/73 ; G11B5/733 ; G11B5/008 ; G11B5/735 ; G11B5/71

Abstract:
The magnetic recording medium includes a non-magnetic support; and a magnetic layer including a ferromagnetic powder, in which one or more kinds of component selected from the group consisting of a fatty acid and a fatty acid amide are included in a portion of the magnetic layer side on the non-magnetic support, and a C—H derived C concentration calculated from a C—H peak surface area ratio in C1s spectra obtained by X-ray photoelectron spectroscopic analysis performed on a surface of the magnetic layer at a photoelectron take-off angle of 10 degrees, after pressing the magnetic layer at a pressure of 70 atm is 45 atom % or more.
Public/Granted literature
- US20210090599A1 MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING DEVICE Public/Granted day:2021-03-25
Information query
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