Method of manufacturing magnetic recording medium and the magnetic recording medium
US6878398B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2004 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | May 4, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/8408
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing a magnetic recording medium which includes a bonding sub-layer substantially and forms a lubricant layer having its enough width. A method of manufacturing a magnetic recording medium includes the steps of: a) laminating an underlayer, a magnetic layer for recording, and a protection layer of amorphous carbon on a substrate of the magnetic recording medium in turn, and b) repeating a progress to said protection layer of amorphous carbon comprising an application process of applying a lubricant, a subsequent ultraviolet rays treatment process, and a subsequent washing process for removing the lubricant which is not connected to the protection layer of amorphous carbon plural times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.