Self-writing of servo patterns based on printed reference pattern in rotating disk drive
US6304407A · kind A · utility
118Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1998 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Oct 27, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B25/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A coarse magnetic template pattern is transferred to a data storage surface of a disk by magnetic printing techniques. As printed, the template pattern essentially provides clocking and may provide radial position information. The disk is then assembled into a completed and enclosed disk drive. The template pattern is then used by the disk drive to self-write highly resolved product embedded servo patterns onto storage surfaces of each data disk including the surface having the printed template pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.