Magnetic tape and magnetic tape device
US9779772B1 · kind B1 · utility
108Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2017 |
| Grant date | Oct 3, 2017 |
| Priority date | — |
| Expiry date | Mar 21, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.