System for the sub-micron positioning of a read/write transducer
US5359474A · kind A · utility
Inventor
Key dates
| Filing date | Sep 18, 1992 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Sep 18, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5552
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for the sub-micron positioning of a read/write transducer (28) of a disk drive whereby motion of the transducer, fixed to a transducer holder (30), is caused by a flexing beam (26) deflected by an input spring (32) in turn deflected by an input actuator (34). Motion of the transducer is significantly less than the deflection of the input spring, significantly increasing system resolution while decreasing positioning errors and inaccuracies. The geometry and materials of the flexing beam (26) are such as to promote bending only in a preferred plane parallel to the disk (14) and keep mechanical vibration resonant frequencies higher than the disk rotational frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.