Laser disk texturing apparatus
US5948288A · kind A · utility
38Cited by
16References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 1996 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | May 28, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/82
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Formation of laser texture features simultaneously on the target surfaces of each side of magnetic recording disk is facilitated by optical and mechanical components permitting excellent balance of optical power between each target surface, excellent matching of the radial position of laser texture features between each target surface, and excellent focusing of laser beams on each target surface. Polarization of the source laser beam may be used to controllably balance and direct a single source beam into individual beam paths for each target surface. Handling, automation complexity, and manufacturing time is thereby reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.