Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1982-04-27
1983-12-06
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360 93, G11B 554
Patent
active
044197063
ABSTRACT:
The present invention is a retracting mechanism for use in combination with a tape recorder. The tape recorder includes a base plate, a capstan drive for driving a magnetic tape in a tape cassette and an electronic circuit. A magnetic head is disposed adjacent to the magnetic tape and is electrically coupled to a electronic circuit. A slidable mount for mounting the magnetic head is slidably coupled to the base plate so that the magnetic head may move bidirectionally in a direction orthogonal to the direction which the magnetic tape travels across the face of the magnetic head in order to engage the magnetic tape. The retracting mechanism includes a lever arm which is pivotally coupled to the base plate and disposed adjacent, but not continguous to, the capstan drive. A pinch roller the axis of which is rotatably coupled to the lever arm. A first spring resiliently biases the lever arm so that the pinch roller pinches the magnetic tape against the capstan drive. A second spring for resiliently biases the slidable mount so that the magnetic head engages the magnetic tape. A coupling device couples the lever arm and the slidable mount so that when the slidable mount moves the magnetic head away from the magnetic tape the coupling device pivotally moves the lever arm so that the pinch roller disengages the magnetic tape whereby the pinch roller is mechanically independent of the magnetic head when the magnetic head and the pinch roller engage the magnetic tape.
REFERENCES:
patent: 4052742 (1977-10-01), Pastor et al.
patent: 4232349 (1980-11-01), Kobayashi
Johansen W. Edward
Wolff John H.
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