Magnetic recording medium, the manufacturing method and magnetic recording apparatus using the same
US7147943B2 · kind B2 · utility
5Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2003 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Aug 10, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/7266
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This magnetic recording medium is characterized in that in the magnetic recording medium having a magnetic layer on a non-magnetic substrate by intercalating at least an under layer, the proportion of functional groups per 100 carbon atoms in a diamond-like carbon protective layer mainly composed of carbon for protecting the magnetic layer exceeds 20%. The bonding force between the protective layer and the lubricating layer of the magnetic recording medium is increased so that under high speed rotation, a decrease in the lubricating layer is not caused so as to provide a magnetic recording apparatus having high reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.