Method of forming a magnetic hard disk with elliptical shaped laser bumps
US6299947A · kind A · utility
76Cited by
6References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 20, 1999 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Jan 20, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/82
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method in accordance with our invention for providing texture bumps on a substrate comprises the step of forming elliptical ridge-shaped bumps on the substrate. In one embodiment, substrate is used in the manufacture of a magnetic disk used in a disk drive. The elliptical bumps cause less vibration of the read-write head than circular bumps. The elliptical bumps also provide reduced friction between the disk and a read-write head during use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.