Textured air bearing surface

Details Textured air bearing surface Textured air bearing surface

1990-02-15

1992-01-07

Tupper, Robert S

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 5187

Patent

active

050796577

ABSTRACT:
The present invention discloses texturing of the slider air bearing surfaces of the magnetic heads in disk drives to reduce stiction that retards take-off and displaces critical lubricant in a magnetic head system. One embodiment of the present invention utilizes nonuniform etching of chemically identical components of a ferrite slider material due solely to random crystal orientation relative to the exposed surface. Another embodiment of the present invention utilizes a photoresist of a type used in making printed circuit boards, to form a pattern. Subseqeuntly, the surface may be etched to form the antistiction properties. A variety of controlled and reproducible patterns as well as a controlled depth of pattern may be utilized.

REFERENCES:
patent: 4529659 (1985-07-01), Hoshino et al.
patent: 4530021 (1985-07-01), Cameron
patent: 4549238 (1985-10-01), Ertingshausen et al.
patent: 4589036 (1986-05-01), Bertschy et al.

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