Head height adjustment method including a synchronized rotating laser beam optical axis
US5347415A · kind A · utility
19Cited by
2References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1993 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Apr 12, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/53
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic recording and/or reproducing apparatus, it is necessary to adjust the height of each of a plurality of magnetic heads carried by a rotary cylinder for movement together therewith. This adjustment is accomplished by rotating an optical axis of a laser beam emitted from a laser oscillator in synchronism with the rotary cylinder so that the optical axis is always maintained stationary relative to the magnetic head. The laser beam is subsequently irradiated to a head base in the proximity of a head chip secured to the head base, thereby adjusting the head height during rotation of the rotary cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.