Mechanisms for a closed loop head positioner for streaming tape

Details Mechanisms for a closed loop head positioner for streaming tape Mechanisms for a closed loop head positioner for streaming tape

1992-08-17

1993-03-02

Smith, Jerry

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7712, G11B 555, G11B 5584

Patent

active

051914921

ABSTRACT:
Tape head positioning apparatus that includes a head carriage frame and a parallel beam positioning structure supported by the head carriage for supporting the magnetic tape head and for variably positioning the magnetic tape head relative to the carriage along a path generally transverse to the tape travel direction. The parallel beam positioning structure includes parallel support beams secured at their ends to the head carriage. The magnetic tape head is secured between the bender beam at a location generally between their ends. In a particular embodiment of the parallel beam positioning apparatus, the parallel support beams comprise first and second resilient reed beams having their ends secured to the head carriage and configured to be deflectable in a direction transverse to the tape travel direction. A voice coil linear motor deflects the reed beams pursuant to a control signal to move the magnetic tape head along the path transverse to the tape travel direction. In a further embodiment of the parallel beam positioning apparatus, the support beams comprise first and second parallel piezoelectric bender beams having their ends secured to the head carriage and configured to deflect in a direction transverse to the tape travel direction in response to a control signal. Deflection of the bender beams pursuant to the control signal displaces the magnetic tape head along the path transverse to the tape travel direction.

REFERENCES:
patent: 3526726 (1970-09-01), Corbett et al.
patent: 3575422 (1971-04-01), Peltz et al.
patent: 4165523 (1979-08-01), Hathaway
patent: 4451862 (1984-05-01), Rijckaert et al.
patent: 4583135 (1986-04-01), Kimura
patent: 4623947 (1986-11-01), Kasahara

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