Slider unit controllably actuated at a surface of a moving infor

Details Slider unit controllably actuated at a surface of a moving infor Slider unit controllably actuated at a surface of a moving infor

1991-12-02

1994-01-04

Heine, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 560

Patent

active

052765733

ABSTRACT:
A slider unit having a reading or reproducing head, with the head being adapted to float over a surface of an information recording disc. The slider unit includes a slider body having a flying height sensor with float surfaces on an underside thereof to generate a lifting force. A piezoelectrically or electrostatically controlled valve layer may be positioned over a vent communicating between an upper surface of the slider, with the vent opening to a recess for generating a negative lift component at an underside of the slider unit. The slider body is made from a ceramic base portion and includes a semiconductive insert portion of, for example, silicon or a photosensitive glass with an adjustment device being formed by utilization of microfabrication techniques such as deposition and etching.

REFERENCES:
patent: 4669011 (1987-05-01), Lemke
IBM T.D.B., vol. 12, No. 8, Jan. 1970, Control of Slider Aerodynamics in Disk Files; W. Nystrom & E. Valstyn.

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