Magnetic disc apparatus with a magnetic space member

Details Magnetic disc apparatus with a magnetic space member Magnetic disc apparatus with a magnetic space member

1998-08-18

2000-07-04

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360103, G11B 558, G11B 5133

Patent

active

060847484

ABSTRACT:
A magnetic disc apparatus capable of selectively driving at least two types of the magnetic discs having signal recording portions on their major surfaces and having different recording densities. The magnetic disc apparatus includes a main head carriage mounted for movement on a base block, a supporting arm having its one end supported by a main head carriage, and a magnetic head having a first transducer having a slider, and a first core and adapted for accessing information signals at a first recording density, and a second transducer having a second core and adapted for accessing information signals at a second recording density higher than the first recording density. A magnetic gap for the first transducer and a magnetic gap for the second transducer are formed on the surface of the magnetic head facing the major surface of the magnetic disc. The magnetic disc apparatus also includes a flat-plate-shaped pivoting member for pivotably supporting the magnetic head in a state in which the slider and the base block are disposed on one and the opposite sides of the pivoting member. The magnetic head is changed in its posture to the magnetic disc to follow surface deviation of the magnetic disc produced during driving to achieve correct accessing of the magnetic disc by the magnetic head.

REFERENCES:
patent: 5187624 (1993-02-01), Shigemoto
patent: 5327309 (1994-07-01), Takamiya et al.
patent: 5367419 (1994-11-01), Kazama
patent: 5485336 (1996-01-01), Matsunaga
patent: 5677814 (1997-10-01), Osaka
patent: 5793570 (1998-08-01), Osaka
patent: 5877910 (1999-03-01), Williams et al.
patent: 5907457 (1999-05-01), Kudo et al.

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