Magnetic disk unit control method for removing dust from a disk

Details Magnetic disk unit control method for removing dust from a disk Magnetic disk unit control method for removing dust from a disk

1992-10-05

1995-10-24

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360128, G11B 2736

Patent

active

054615216

ABSTRACT:
In a magnetic disk unit, a magnetic head slider member for holding a magnetic head is floated from a recording face of a magnetic disk by an air flow caused by a high speed rotation of the magnetic disk. The magnetic disk unit has a magnetic head moving device for rotatably supporting the magnetic head slider member and positioning the magnetic head in a radial direction of the magnetic disk. A control method of the magnetic disk unit has the steps of reciprocating the magnetic head slider member a predetermined number of times at a high speed in a predetermined range in the radial direction of the magnetic disk by using a position of the magnetic head slider member as a reference in the radial direction of the magnetic disk provided when it is detected that a data error is included in reproduced data at a reproducing time of recorded data; and again reproducing the same recorded data after the reciprocating movement of the magnetic head slider member. Other control methods of the magnetic disk unit are also shown.

REFERENCES:
patent: 3731289 (1973-05-01), Bajgert et al.
patent: 4516165 (1985-05-01), Cunningham et al.
patent: 4816938 (1989-03-01), Cowen et al.
patent: 5055949 (1991-10-01), Kawakami
patent: 5196974 (1993-03-01), Higayashi et al.
patent: 5251077 (1993-10-01), Saitoh
patent: 5323276 (1994-06-01), Ono

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