Ion doped servo pattern for magnetic recording disk
US4556597A · kind A · utility
16Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1983 |
| Grant date | Dec 3, 1985 |
| Priority date | — |
| Expiry date | Aug 22, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24851
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording disk substrate is provided with a capacitive servo pattern by implanting dopant material in the substrate to modify the substrate conductivity in a desired servo pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.