Magnetic head positioner for magnetic disk apparatus which can p

Details Magnetic head positioner for magnetic disk apparatus which can p Magnetic head positioner for magnetic disk apparatus which can p

1994-10-05

1996-06-04

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360105, G11B 554, G11B 2102

Patent

active

055239129

ABSTRACT:
An arm assembly has a front end portion on which a plurality of magnetic heads opposed to a plurality of magnetic disk media, respectively, for writing/reading information are mounted, a rear end portion having a C shaped arm formed with a pair of holes or recesses having a predetermined depth and a center portion rotatably supported by a rotational shaft through bearings. A coil is fixedly secured to an inside surface of the C shaped arm through an adhesive for driving the arm assembly. A permanent magnet assembly is disposed in a location opposing the coil and constituting a magnetic circuit together with the coil. A pair of stoppers are provided on opposite sides of the C shaped arm with predetermined spaces and adapted to restrict a rotational movement of the C shaped arm by contacting with collision surfaces of the C shaped arm. The holes or the recesses of the C shaped arm may be filled with elastic material having superior vibration attenuating characteristics.

REFERENCES:
patent: 4734805 (1988-03-01), Yamada et al.
patent: 5034837 (1991-07-01), Schmitz
patent: 5109310 (1992-04-01), Ohkjita et al.
patent: 5189577 (1993-02-01), Nishida et al.
patent: 5214552 (1993-05-01), Haga
patent: 5291360 (1994-03-01), Foote
patent: 5303101 (1994-04-01), Hatch et al.
patent: 5365389 (1994-11-01), Jabbari et al.

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