Data storage disk drive with a piezoelectric member and a resili

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium

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Details

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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