Rotary actuator with a magnetic bias bearing configuration for r

Details Rotary actuator with a magnetic bias bearing configuration for r Rotary actuator with a magnetic bias bearing configuration for r

1995-06-07

1996-10-08

Levy, Stuart S.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4417, 359225, 310 36, G11B 7095, G11B 7135, G02B 2608, H02K 117

Patent

active

055638716

ABSTRACT:
A rotary actuator utilizing a magnetically biased bearing. A magnetized rotor is held in close proximity to a ferromagnetic mount. The magnetic flux created by the magnetic rotor through the ferromagnetic mount creates a magnetic bias force on the rotor bearing surface. The rotary actuator with the magnetically biased bearing rotates a mounted mirror to direct a reading laser beam to act as a fine tracking actuator within an optical data storage system.

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"Focus And Tracking Apparatus For Optical Disks", IBM Technical Disclosure Bulletin, vol. 33, No. 10A, New York, U.S., Mar., 1991, pp. 360-361.

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