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US 9,779,772 B1Granted
Magnetic tape and magnetic tape device
AssigneeFUJIFILM Corporation
InventorsNorihito Kasada, Tetsuya Kaneko, Eiki Ozawa
Life of this patent
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Abstract
The magnetic tape has a magnetic layer containing ferromagnetic powder and binder on a nonmagnetic support, wherein a timing based servo pattern is present on the magnetic layer, the centerline average surface roughness Ra that is measured on the surface of the magnetic layer is less than or equal to 1.8 nm, and the coefficient of friction that is measured on the base portion of the surface of the magnetic layer is less than or equal to 0.35.
Claims14
A magnetic tape,
- which comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, wherein
- a timing based servo pattern is present on the magnetic layer;
- a centerline average surface roughness Ra that is measured on a surface of the magnetic layer is less than or equal to 1.8 nm;
- and
- a coefficient of friction that is measured on a base portion of the surface of the magnetic layer is less than or equal to 0.35.
2 more elements
A magnetic tape device,
- which comprises a magnetic tape, a magnetic head and a servo head, wherein
- the magnetic tape is a magnetic tape which comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, wherein
- a timing based servo pattern is present on the magnetic layer;
- a centerline average surface roughness Ra that is measured on a surface of the magnetic layer is less than or equal to 1.8 nm;
- and
- a coefficient of friction that is measured on a base portion of the surface of the magnetic layer is less than or equal to 0.35.
3 more elements
Dependencies are inferred from the claim text.