Magnetic disk apparatus including magnetic head unloading mechan

Details Magnetic disk apparatus including magnetic head unloading mechan Magnetic disk apparatus including magnetic head unloading mechan

1994-11-29

1996-08-27

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 554

Patent

active

055506950

ABSTRACT:
A magnetic disk apparatus having an unloading member for unloading a magnetic head from the surface of the magnetic disk when the driving of the same is stopped. One end of a spring arm has a magnetic head attached thereto and the other end of the spring arm is joined to a head arm which is rotated by a voice coil motor. The unloading member is set up on the base for rotation in a plane parallel to the plane of rotation of the head arm and has a first arm whose one end is capable of slide contacting the spring arm and a second arm whose one end is capable of abutting on the head arm. The one end of the first arm is beveled to facilitate its slide contact with the spring arm. The second arm of the unloading member is urged by a torsion spring in the direction of the head arm. When the driving is stopped, the magnetic head is moved to the outer side of the magnetic disk, so that the head arm abuts on the one end of the second arm. Thereby, the one end of the first arm is rotated toward the magnetic head so that the spring arm comes into slide contact with the beveled end of the first arm and goes on the first arm and, thus, the magnetic head becomes supported by the unloading member.

REFERENCES:
patent: 4703376 (1987-10-01), Edwards et al.
patent: 5189575 (1993-02-01), Onooka et al.
patent: 5231549 (1993-07-01), Morehouse et al.
Hashimoto et al, Development of a New Sub-Sub Micron Flying Ramp-Loading Head with Emphasis on Slider Roll Control Capability, IEEE Transations On Magnetics, vol. 28, No. 5, Sep. 1992, pp. 2536-2538.

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