Adjusting mechanism for flying pickup head in data storage...

Details Adjusting mechanism for flying pickup head in data storage... Adjusting mechanism for flying pickup head in data storage...

2005-04-12

2005-04-12

Watko, Julie Anne (Department: 2653)

Dynamic magnetic information storage or retrieval

Head mounting

For adjusting head position

C369S250000, C720S674000

Reexamination Certificate

active

06879469

ABSTRACT:
The present invention provides a tuning mechanism for flying pickup heads in data storage devices. The pickup device includes a coil, a pivot, a suspension, and a piezoelectric bender. The piezoelectric bender made by a bi-layer or a multi-layer piezoelectric material is formed on one end of the suspension, and proper voltages applied to the piezoelectric bender via wires enable the piezoelectric bender to undergo both neutral axis displacement and bending deflection. A pickup head is attached to the free end of the piezoelectric bender opposite to the coil, and via the piezoelectric bender, focusing and tracking motion of the pickup head can be tuned at the same time. Furthermore, since the characteristic of the piezoelectric bender is similar to bimetallic elements, the bender can undergo large bending deflection to compensate large deformation of rotating optical disks, so that the flying height of the pickup head can be tuned to maintain a constant focusing distance in reading/writing data.

REFERENCES:
patent: 4374402 (1983-02-01), Blessom et al.
patent: 6590748 (2003-07-01), Murphy et al.
patent: 6680826 (2004-01-01), Shiraishi et al.
patent: 20020089916 (2002-07-01), Lee et al.
patent: 20020105750 (2002-08-01), Li et al.
patent: P2001-143425 (2001-05-01), None

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