Method for adjustably positioning a transducer for a disc drive

Details Method for adjustably positioning a transducer for a disc drive Method for adjustably positioning a transducer for a disc drive

1987-01-29

1989-04-25

Faber, Alan

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

318696, G11B 5596

Patent

active

048253138

ABSTRACT:
A method of adjusting the position of a magnetic head in a magnetic head positioning mechanism positions the magnetic head at a target track on a magnetic disk. Since a floppy disk system is so designed as to make a floppy disk replaceable, it is necessary to adjust accurately the position of the magnetic head from the position of a spindle. According to the present invention, the position of the magnetic head is adjusted by the method wherein the displacement of an amount of deviation from a prescribed track in the magnetic head positioning mechanism is calculated beforehand, the amount of deviation is sampled subsequently by moving the magnetic head, this sampled amount of deviation is compared with the aforesaid calculated displacement to know the maximum and minimum values of the amounts of deviation on the track of movement of the magnetic head, and the adjustment is implemented on the basis of these values.

REFERENCES:
patent: 4513331 (1985-04-01), Baker et al.
patent: 4555738 (1985-11-01), Murayama et al.
patent: 4562494 (1985-12-01), Bond
patent: 4608618 (1986-08-01), Sturtevant-Stuart
IBM Tech. Disc. Bulletin, vol. 26, No. 1, Jun. 1983, Head-Alignment Technique, W. A. Overby, pp. 171-173.
IBM Tech. Disc. Bulletin, vol. 25, No. 7A, Dec. 1982, Flexible File Head Alignment, J. G. Goodwin, pp. 3241-3243.

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