Magnetic recording medium with an intermediate protective layer of silicon dioxide and a perfluoroalkylpolyether lubricant layer
US5055359A · kind A · utility
17Cited by
5References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1991 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Feb 20, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic recording medium having a layer of a perfluoroalkylpolyether-based liquid lubricant as an uppermost layer, the liquid lubricant has an atomic group including an aromatic ring at a terminal end of a perfluoropolyether main chain, and is coated on an inorganic oxide. Therefore, adhesion force of the lubricant is greatly improved, and interaction within the lubricant can be decreased, thus realizing a magnetic recording medium having excellent lubricity and wear resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.