Magnetic recording medium comprising multilayered carbon-containing protective overcoats
US6245417A · kind A · utility
13Cited by
11References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1998 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Apr 21, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium is provided with multilayered carbon-containing protective overcoats having different surface polarities and electrical conductivities, thereby enabling optimum performance to be tailored for different drive programs. Embodiments include a first protective overcoat comprising hydrogenated carbon and a second protective overcoat comprising graphitic carbon or amorphous carbon nitride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.