Roll insensitive air bearing slider

Details Roll insensitive air bearing slider Roll insensitive air bearing slider

1996-12-30

1998-04-07

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 2121, G11B 1732, G11B 560

Patent

active

057371512

ABSTRACT:
An air bearing slider for use in carrying a transducer adjacent a recording medium exhibits reduced sensitivity to variations in roll, crown, and skew. In one embodiment, the slider comprises an air bearing slider having a pair of substantially coplanar side rails disposed along the sides of the air bearing surface so as to form a recessed section between the side rails. The recessed section is open at both the leading and trailing ends of the slider while each side rail has a tapered section or etched step at the leading edge of the slider. One rail carries the transducer and extends for the entire length of the slider body. The rail without a transducer extends from the leading edge toward the trailing edge, but does not extend all the way to the trailing edge. Under some skew, accessing, and crash stop impact conditions, the resulting slider roll causes the flying height of the inactive rail to drop. By proper selection of the length and width of the inactive rail, the roll is biased such that the fly height of the inactive rail remains higher than that of the active rail even under worst case conditions. Therefore, minimum slider to disk spacing is larger than it would be for a slider design in which all rails extend the entire length of the slider.

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Anonymous, "Tri-Rail Negative Pressure Air Bearing Design", Research Disclosure,Sep. 1991, No. 329, Ref. No. 32971.
Anonymous, "Roll Insensitive Slider Design for Improved Disk File Reliability", Research Disclosure, Nov. 1985, No. 259, Ref. No. 25946.

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