Invention Grant
- Patent Title: Magnetic tape having characterized magnetic layer surface, magnetic tape cartridge, and magnetic tape device
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Application No.: US17955156Application Date: 2022-09-28
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Publication No.: US11869553B2Publication Date: 2024-01-09
- 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 21158786 2021.09.29 JP 22135818 2022.08.29
- Main IPC: G11B5/592
- IPC: G11B5/592 ; G11B5/735 ; G11B5/706

Abstract:
A magnetic tape in which an arithmetic average roughness Ra measured at a surface of the magnetic layer with an atomic force microscope is 2.0 nm or less, and in an environment with a temperature of 23° C. and a relative humidity of 50%, an AlFeSil abrasion value45° of a surface of the magnetic layer measured at a tilt angle of 45° of an AlFeSil prism is 20 μm to 50 μm, a standard deviation of an AlFeSil abrasion value of the surface of the magnetic layer measured at each of tilt angles of 0°, 15°, 30°, and 45° of the AlFeSil prism is 30 μm or less, and the tilt angle of the AlFeSil prism is an angle formed by a longitudinal direction of the AlFeSil prism and a width direction of the magnetic tape.
Public/Granted literature
- US20230097367A1 MAGNETIC TAPE, MAGNETIC TAPE CARTRIDGE, AND MAGNETIC TAPE DEVICE Public/Granted day:2023-03-30
Information query
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