Magnetic head slider with crown ABS

Details Magnetic head slider with crown ABS Magnetic head slider with crown ABS

1996-02-20

1998-06-02

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 560

Patent

active

057610037

ABSTRACT:
A magnetic head slider including a crown air-bearing surface (ABS) adapted to be located opposite to a magnetic disk. The ABS includes a front air-introducing end and a rear air-discharging end formed respectively along opposed two edges of the ABS. The ABS also includes a pressure generating section for generating both positive and negative pressure due to air introduced from the air-introducing end onto the ABS when the magnetic disk rotates. The pressure generating section extends from the air-introducing end to a boundary positioned between a laterally extending center line of the ABS and the air-discharging end, and includes at least one rail with a convexly curved upper surface. The ABS further includes a bump with a convexly curved upper surface, arranged at a center of the air-discharging end and longitudinally spaced from the boundary. The bump has such a small dimension that a dynamic pressure due to the air introduced onto the ABS is hardly applied to the bump. The slider further includes a magnetic head element formed adjacent to the bump.

REFERENCES:
patent: 4420780 (1983-12-01), Deckert
patent: 5396387 (1995-03-01), Murray
patent: 5406432 (1995-04-01), Murray
patent: 5490026 (1996-02-01), Dorius et al.
C.E. Yeack-Scranton et al., "An Active Slider for Practical Contact Recording, "IEEE Transactions on Magnetics, vol. 26, No. 5, pp. 2478-2483, Sep. 1990.
Vijay D. Khanna et al., "Programmable Air Bearing Sliders for Magnetic Storage," Tribology Transactions, vol. 34, No. 4, pp. 559-564, 1991.
K. Fukuda et al., "Thin Film Head for Quasi-contact Head/Disk Interface," IEEE Transactions on Magnetics, vol. 27, No. 6, pp. 5082-5084, Nov. 1991.
D.S. Chhabra et al., "Air Bearing Design Considerations for Constant Fly Height Applications," IEEE Transactions on Magnetics, vol. 30, No. 2, pp. 417-423, Mar. 1994.
Cal Hardie et al., "Analysis and Performance Characteristics of the Seagate Advanced Air Bearing Slider," IEEE Transactions on Magnetics, vol. 30, No. 2, pp. 424-432, Mar. 1994.
Makoto Watanabe et al., "An Air Bearing Slider for Small Diameter Disk Storage Devices," Tribology Transactions, vol. 35, No. 3, pp. 544-550, 1992.

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