Head adjusting disk

Details Head adjusting disk Head adjusting disk

1984-01-13

1985-11-26

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

G11B 2100

Patent

active

045557381

ABSTRACT:
An improved head adjusting disk is disclosed which is adapted to be used for adjustment of the position of a head in a mechanism such as a floppy disk drive mechanism. On the improved head adjusting disk, two head position adjusting record tracks for adjustment of the position of a head are formed such that an outer circumferential edge of one of the record tracks and an inner circumferential edge of the other record track extend along a same circumference and that one of the two record tracks is formed to extend along a portion of one n'th (where n>1 and n=2) of the circumference while the other record track is formed to extend along the remaining (1-1
) portion of the circumference, whereby individual signals reproduced from the two head position adjusting record tracks can be distinguished from each other by difference in duration thereof.

REFERENCES:
IBM Technical Disclosure Bulletin, vol. 17, No. 11, Apr. 1975, pp. 3415-3416, Eccentricity Tolerant Head Alignment Check, D. E. Sibbers.

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