- Patent Title: Magnetic tape, magnetic tape cartridge, and magnetic tape device
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Application No.: US18161284Application Date: 2023-01-30
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Publication No.: US12057150B2Publication Date: 2024-08-06
- Inventor: Shinji Tsujimoto
- 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 20130864 2020.07.31
- Main IPC: G11B5/72
- IPC: G11B5/72

Abstract:
The magnetic tape has one or more of each of an area A and an area B having different center line average surface roughness Ra measured on a surface of a magnetic layer in a region over a part of the magnetic tape in a longitudinal direction, with a ratio BMag/AMag of 1.20 to 10.00 and a ratio BMag/BBack of equal to or greater than 2.0 in a case where extraction amounts per unit area of a component selected from the group consisting of fatty acid, fatty acid ester, and fatty acid amide extracted from a magnetic layer side of the area A and the area B are defined as AMag and BMag respectively, and an extraction amount per unit area of the above component extracted from a back coating layer side of the area B is defined as BBack.
Public/Granted literature
- US20230169996A1 MAGNETIC TAPE, MAGNETIC TAPE CARTRIDGE, AND MAGNETIC TAPE DEVICE Public/Granted day:2023-06-01
Information query
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