Micro-texture media made by polishing of a selectively irradiated surface
US6117499A · kind A · utility
94Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1998 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Apr 9, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/8404
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing a magnetic disk comprises the steps of: a) providing a substrate with a layer of an amorphous multi-component material at its surface; b) irradiating the amorphous layer (e.g. by applying heat from a heating element, laser beam, or the like) to thereby create micro-structurally changed regions in the amorphous layer; and c) chemo-mechanically polishing the amorphous layer to produce micro-texture features at or near the micro-structurally changed regions. The disk is then completed by depositing additional layers such as an underlayer, a magnetic layer, a protective overcoat, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.