Compensation for dimensional changes in a record medium

A track positioning apparatus for a (floppy) disk record medium to compensate for physical changes in the disk resulting from variations in temperature or humidity. A grating, used to position a read-write head, includes reference marks thereon corresponding to reference tracks on the disk. The grat...

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Bibliographische Detailangaben
Hauptverfasser:	SCHULTZ, RALPH H
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROLLING INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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Beschreibung
Zusammenfassung:	A track positioning apparatus for a (floppy) disk record medium to compensate for physical changes in the disk resulting from variations in temperature or humidity. A grating, used to position a read-write head, includes reference marks thereon corresponding to reference tracks on the disk. The grating is stretched or compressed proportionally during a calibration operation to compensate for changes in the flexible disk.