Laser texturing of magnetic recording medium using a crystal material
US5783797A · kind A · utility
10Cited by
19References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 1996 |
| Grant date | Jul 21, 1998 |
| Priority date | — |
| Expiry date | May 9, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/8404
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium is provided with a surface texture generated by a pulsed laser light beam passed through a lens focusing system and then through a crystal material. The use of a crystal material enables the formation of a topography comprising precise protrusions with accurately controlled spacings therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.