Textured air bearing surface
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United States of America Patent
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-
Nov 10, 1992
Issued Date -
N/A
app pub date -
Sep 6, 1991
filing date -
Feb 15, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
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. Subsequently, 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.
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