Method and apparatus for active fly height control with...

Details Method and apparatus for active fly height control with... Method and apparatus for active fly height control with...

2006-05-16

2006-05-16

Sniezek, Andrew L. (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S234400

Reexamination Certificate

active

07046473

ABSTRACT:
A system and method for adjusting the flying height of a magnetic head above a magnetic storage medium, such as a disk, is disclosed. A charging surface of the slider, separate from the read/write head, allows a charging electrical interconnect to apply an electrical charge to the slider. By acting as a quasi-parallel capacitor, the amount of spacing in the head-disk interface may be increased or decreased based on the amount of voltage applied. The slider may be electrically isolated from the suspension. Simultaneously, a heating element deforms the slider to further adjust the spacing between the read/write head and the disk surface. A feedback control system may monitor and control the head-disk spacing by measuring a temperature or other environmental conditions surrounding the slider and disk.

REFERENCES:
patent: 5991113 (1999-11-01), Meyer et al.
patent: 6359746 (2002-03-01), Kakekado et al.
patent: 6577466 (2003-06-01), Meyer et al.
patent: 2002/0191326 (2002-12-01), Xu et al.
patent: 2003/0174430 (2003-09-01), Takahashi et al.
patent: 2005/0007687 (2005-01-01), Feng et al.
patent: 2005/0057841 (2005-03-01), Stover et al.
patent: 2005/0105204 (2005-05-01), Bloodworth et al.

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