Magnetic recording medium and cartridge
US11031033B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2019 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Feb 18, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/7356
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
[Object] Provided is a technology that is capable of further improving a recording density of data.[Solving Means] A magnetic recording medium according to the present technology is a magnetic recording medium in a shape of a tape that is long in a longitudinal direction and is short in a width direction, the medium including: a base material; a magnetic layer; and a non-magnetic layer that is provided between the base material and the magnetic layer, and contains one or more types of non-magnetic inorganic particles, in which the magnetic layer includes a data band long in the longitudinal direction in which a data signal is to be written, and a servo band long in the longitudinal direction in which a servo signal is written, and in the magnetic layer, a degree of vertical orientation is greater than or equal to 65%, a half width of a solitary waveform in a reproduction waveform of the servo signal is less than or equal to 195 nm, and a thickness of the magnetic layer is less than or equal to 90 nm, and the non-magnetic layer contains at least Fe-based non-magnetic particles as the non-magnetic inorganic particles, and in the non-magnetic layer, an average particle volume of the F…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.