Disk drive with rectification wall for circulation filter and fi

Details Disk drive with rectification wall for circulation filter and fi Disk drive with rectification wall for circulation filter and fi

1998-03-13

1999-12-28

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 3314

Patent

active

060089652

ABSTRACT:
A disk drive includes a casing for enclosing at least a disk and a head. Rectification walls are disposed at corners of the casing. The walls serve to rectify an air stream generated by rotation of the disk at the periphery of the rotating disk. A bypass is defined between the side wall of the casing and at least one rectification wall. A filter is disposed in the bypass for catching dust in the air stream. A parameter d/L, where d is the width of an entrance of the bypass and L is the length of the comer along the periphery of the disk, is determined so that vibration of the rotating disk is equal to or less than an admissible value estimated from a tracking error margin. The tracking error margin is estimated from a track pitch on the disk. Reliable positioning of the head with respect to the disk can be achieved with the present invention.

REFERENCES:
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patent: 4714972 (1987-12-01), Biermeier et al.
patent: 5025337 (1991-06-01), Brooks
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patent: 5293282 (1994-03-01), Squires et al.
patent: 5406431 (1995-04-01), Beecroft
patent: 5754365 (1998-05-01), Beck et al.
patent: 5796557 (1998-08-01), Bagnell et al.
patent: 5907453 (1999-05-01), Wood et al.

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