Invention Grant
- Patent Title: Magnetic tape having characterized magnetic layer surface, magnetic tape cartridge, and magnetic tape device
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Application No.: US17955251Application Date: 2022-09-28
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Publication No.: US11887637B2Publication Date: 2024-01-30
- 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: JP 21158784 2021.09.29 JP 22135816 2022.08.29
- Main IPC: G11B5/702
- IPC: G11B5/702 ; G11B5/78 ; G11B5/708 ; G11B5/735 ; G11B5/71

Abstract:
A magnetic tape in which a C—H derived C concentration calculated from a C—H peak surface area ratio in 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 45 atom % to 65 atom %, and in an environment with a temperature of 32° C. and a relative humidity of 80%, a frictional force F45° on the surface of the magnetic layer with respect to an LTO8 head measured at a head tilt angle of 45° is 4 gf to 15 gf, and a standard deviation of a frictional force F on the surface of the magnetic layer with respect to the LTO8 head measured at each of head tilt angles of 0°, 15°, 30°, and 45° is 10 gf or less.
Public/Granted literature
- US20230103135A1 MAGNETIC TAPE, MAGNETIC TAPE CARTRIDGE, AND MAGNETIC TAPE DEVICE Public/Granted day:2023-03-30
Information query
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