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US 11,862,214 B2Granted
Magnetic tape, magnetic tape cartridge, and magnetic tape device
AssigneeFUJIFILM Corporation
InventorsYujin Shibata, Norihito Kasada, Takuto Kurokawa, So Matsuyama
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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.
Claims14
A magnetic tape comprising:
- a non-magnetic support;
- and
- a magnetic layer containing a ferromagnetic powder,
- wherein 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.
3 more elements
Dependencies are inferred from the claim text.