Longitudinal scan, cam shaped, turntable rotor for magnetic reco

Details Longitudinal scan, cam shaped, turntable rotor for magnetic reco Longitudinal scan, cam shaped, turntable rotor for magnetic reco

1977-02-28

1978-09-05

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 84, 360130, G11B 1564, G11B 1560, G11B 2104

Patent

active

041124723

ABSTRACT:
In a reel-to-reel longitudinally scanned tape transport or recorder, a length of media is positioned to fly in transducing relationship with a transducing head. The transducing head is mounted on a rotatable turntable rotor. The rotor includes a substantially circular member with concentric horizontal surfaces projecting in separate vertical planes. A cam shaped contour is fabricated on one of the horizontal surfaces with the transducing means positioned at the peak or crown of said cam shaped surface. There is a gradual roll off between the crown and the lowest point of the cam shaped surface. The roll off creates a converging channel which allows a sufficient volume of air to enter the interface between the media and the head and a diverging channel which allows the air to be bled off.

REFERENCES:
patent: 4015291 (1977-03-01), Stevenson et al.

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