- Patent Title: Magnetic tape, magnetic tape cartridge, and magnetic tape device
-
Application No.: US17953149Application Date: 2022-09-26
-
Publication No.: US11862214B2Publication Date: 2024-01-02
- Inventor: Yujin Shibata , Norihito Kasada , Takuto Kurokawa , So Matsuyama
- 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 21156586 2021.09.27
- Main IPC: G11B5/78
- IPC: G11B5/78 ; G11B5/65 ; G11B23/107 ; G11B5/584 ; G11B5/733 ; G11B5/008

Abstract:
The magnetic tape includes a non-magnetic support, and a magnetic layer containing a ferromagnetic powder, in which an edge portion Ra which is an arithmetic average roughness Ra measured at an edge portion of a surface of the magnetic layer is 1.50 nm or less, a central portion Ra which is an arithmetic average roughness Ra measured at a central portion of the surface of the magnetic layer is 0.30 nm to 1.30 nm, and a Ra ratio (central portion Ra/edge portion Ra) is 0.75 to 0.95.
Public/Granted literature
- US20230099064A1 MAGNETIC TAPE, MAGNETIC TAPE CARTRIDGE, AND MAGNETIC TAPE DEVICE Public/Granted day:2023-03-30
Information query
IPC分类: