Disk head height control
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United States of America Patent
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Oct 29, 2002
Grant Date -
N/A
app pub date -
Sep 24, 1999
filing date -
Sep 24, 1999
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A disk head fly height adjustment method includes positioning a disk head over a surface of a rotating data storage disk and dynamically altering a load point of the disk head by changing an electrical force applied to an active element mounted to a head-gimbal assembly. A data storage apparatus includes a head assembly having a data transfer head coupled to a gimbal and an active element coupling the head assembly and a suspension. The active element is configured to exert a force between the head assembly and the suspension in response to an electrical force applied to the active element. The active element can dynamically shift a load point of a disk head. Shifting the load point can alter the pitch of the disk head and, consequently, the fly height of the head.
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