Method for preparing a substrate for a magnetic disk
US5980997A · kind A · utility
13Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1996 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Jun 3, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/8408
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for manufacturing a magnetic disk comprises the step of depositing a metallic layer on a glass substrate and laser texturing the metallic layer. The magnetic disk is then completed by deposition of (a) an underlayer such as Cr or sputtered NiP, (b) a magnetic layer such as a Co or Fe alloy, and (c) a protective overcoat such as ZrO.sub.2, carbon or hydrogenated carbon. By providing the above-mentioned metallic layer, laser texturing can now be used in conjunction with glass substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.