Invention Grant
- Patent Title: Magnetic tape having characterized magnetic layer, magnetic tape cartridge, and magnetic tape apparatus
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Application No.: US18538626Application Date: 2023-12-13
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Publication No.: US12315540B2Publication Date: 2025-05-27
- Inventor: 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: JP2022-199173 20221214
- Main IPC: G11B5/71
- IPC: G11B5/71 ; G11B5/735 ; G11B5/78

Abstract:
The magnetic tape includes a non-magnetic support, and a magnetic layer containing a ferromagnetic powder. One or more components selected from the group consisting of a fatty acid and a fatty acid amide are included in a portion on the non-magnetic support on a magnetic layer side, a C—H derived C concentration calculated from a C—H peak surface area ratio of C1s spectra obtained by X-ray photoelectron spectroscopy performed on a surface of the magnetic layer at a photoelectron take-off angle of 10 degrees is 50 at % or more, and standard deviation σ of the C—H derived C concentration in a width direction of the surface of the magnetic layer is 2.0 at % or less.
Public/Granted literature
- US20240203451A1 MAGNETIC TAPE, MAGNETIC TAPE CARTRIDGE, AND MAGNETIC TAPE APPARATUS Public/Granted day:2024-06-20
Information query
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