Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1980-03-25
1982-12-07
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
36013021, G11B 1560
Patent
active
043630421
ABSTRACT:
In a magnetic tape-automatic tracking method, at least one of the positions of the upper and lower edges of a magnetic tape is detected by an assembly of a tape edge position sensor and light-emitting diode. Any displacement of the running magnetic tape from its standard vertical position is determined from detected data. A generally vertical tape edge position-compensating post which applies a tensile force to the magnetic tape in contact therewith is rotated in a vertical plane by a reversible motor in accordance with the detected extent of the displacement of the running magnetic tape from its standard vertical position. The magnitude of a tensile force applied by the tape edge position-compensating post to the magnetic tape is varied, by the extent of the rotation of the reversible motor. As a result, the magnetic tape is vertically moved in the desired direction to regain its standard vertical position.
REFERENCES:
patent: 3623042 (1971-11-01), Wohler et al.
patent: 3625076 (1971-12-01), Yamada
patent: 3893176 (1975-07-01), Jones
patent: 3943566 (1976-03-01), Brock et al.
IBM Tech. Disc. Bull., L. H. Everett, Lateral Position Detector for Moving Web, vol. 14, No. 6, Nov. 1971, p. 1834.
Kato Toshikazu
Kimura Kenji
Nishiyama Toyoo
Saitou Sinichi
Satoh Ken
Eddleman Alfred H.
Olympus Optical Co,. Ltd.
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