Transducer positioning apparatus

Details Transducer positioning apparatus Transducer positioning apparatus

1978-01-23

1981-06-23

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360109, G11B 555, G11B 2110, G11B 2112

Patent

active

042754275

ABSTRACT:
Apparatus for accurately positioning a transducer head relative to parallel tracks on a recording medium such as magnetic tape. The apparatus includes a frame having a guide to direct the tape along a horizontal path past the transducer head, and a cam mounted for rotation on the frame. The cam has a cylindrically shaped upstanding portion in which a series of graduated planar steps is formed, each such step corresponding to a separate track on the tape. The apparatus further includes a lever having one end pivotally mounted to the frame and a remote end positioned to bear on one of the steps of the cam, and a platform assembly which carries the transducer head and which bears on a mid-portion of the lever. Rotation of the cam raises or lowers the remote end of the lever by a controllable number of steps, and thereby raises or lowers the transducer head by a corresponding but lesser amount, to align it with a selected track on the tape. Fine adjustment of the alignment of the transducer head with respect to the center of a track on the tape is accomplished by a mechanism for movement of the relative location of the pivoted end of the lever.

REFERENCES:
patent: 3531126 (1970-09-01), Tsukagoshi et al.
patent: 3592068 (1971-07-01), Yamada
patent: 3715523 (1975-02-01), Rousseau et al.
patent: 3839735 (1974-10-01), Denk
patent: 3839737 (1974-10-01), Vogel
patent: 4028735 (1977-06-01), Miyazaki

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