Magnetic disk unit and manufacturing method thereof
US7852595B2 · kind B2 · utility
2Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2008 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Dec 6, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/1486
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention relate to a method for manufacturing a magnetic disk unit, the method including a step of writing servo data into the magnetic disk while introducing a low-density gas having a lower density than air into the enclosure. In one embodiment, the magnetic disk unit is comprised of a magnetic disk, a magnetic head, and a voice coil motor which are accommodated in the hermetically sealed enclosure. The enclosure has a gas inlet and a gas outlet, which are provided respectively with filters attached thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.