Data storage disk drive with a piezoelectric member and a resili

Details Data storage disk drive with a piezoelectric member and a resili Data storage disk drive with a piezoelectric member and a resili

1992-05-14

1994-01-25

Dzierzynski, Paul M.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4411, 360105, 360109, G11B 1732

Patent

active

052821900

ABSTRACT:
A data storage disk drive includes an optical head positioned in spaced relationship to the data storage disk by a holder for an objective lens and a piezoelectric body and a resilient body which are mounted on a surface of the holder which faces the data storage disk. An AC power supply applies an AC voltage to the piezoelectric body to produce a flexural standing wave that keeps the resilient body in quasi contact with the data storage disk for making substantially constant a gap between the optical head and the data storage disk.

REFERENCES:
patent: 3688287 (1972-08-01), Perry
patent: 4947077 (1990-08-01), Murata
patent: 5050157 (1991-09-01), Miura et al.
patent: 5191624 (1993-03-01), Ito et al.

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