- 专利标题: Magnetic tape having characterized magnetic layer surface, magnetic tape cartridge, and magnetic tape device
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申请号: US17955251申请日: 2022-09-28
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公开(公告)号: US11887637B2公开(公告)日: 2024-01-30
- 发明人: Norihito Kasada
- 申请人: FUJIFILM Corporation
- 申请人地址: JP Tokyo
- 专利权人: FUJIFILM Corporation
- 当前专利权人: FUJIFILM Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 优先权: JP 21158784 2021.09.29 JP 22135816 2022.08.29
- 主分类号: G11B5/702
- IPC分类号: G11B5/702 ; G11B5/78 ; G11B5/708 ; G11B5/735 ; G11B5/71
摘要:
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.
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