Uniform flying height slider assembly with improved dynamic air

Details Uniform flying height slider assembly with improved dynamic air Uniform flying height slider assembly with improved dynamic air

1987-11-20

1989-09-26

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 560

Patent

active

048705195

ABSTRACT:
A slider assembly for flying a magnetic head at very low clearances on a fluid film over a moving recording medium. This improved slider assembly provides stability and uniformity of flying height and increased damping characteristics when the slider assembly is subjected to dynamic forces. The slider assembly has, in most embodiments, a pair of rails each having a tapered forward end to provide a converging inlet to achieve the fluid film. Most of the static load is carried by the flat surface of the rails rearward from that tapered forward end. Each rail of the slider assembly has at least one longitudinal transverse pressurization contour (TPC) along corresponding edges of the rails to provide this stability of flying height. When only one TPC per rail is used, the particular edge chosen for the TPC depends upon the disk size and skew angle distribution over the recording zone. The TPC's can be of step construction, a linear taper or a convex configuration. For each, the "average" angle as determined by the height and width of the TPC is about 0.05 to about 5 degrees.

REFERENCES:
patent: 4673996 (1987-06-01), White
patent: 4757402 (1988-07-01), Mo
IEEE Trans on Magnetics, Sep. 1986; Uniform Flying Height Rotary Actuated Air Bear'g Slider; J. White.

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