Magnetic disc apparatus having uniform torque imparting means fo

Details Magnetic disc apparatus having uniform torque imparting means fo Magnetic disc apparatus having uniform torque imparting means fo

1991-10-22

1992-12-15

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360106, 360 7806, 360 7812, G11B 554, G11B 5596

Patent

active

051722879

ABSTRACT:
A swing head arm type magnetic disc apparatus includes a magnetic disc having a data R/W zone and a CSS zone, and is accommodated in a housing and a spindle rotably supported on the housing, a head arm provided with a floating-type magnetic head and secured to the spindle, a motor for driving the spindle when a seek operation is performed, and apparatus for imparting torque to the spindle. The torque imparting apparatus imparts torque such that the total torque obtained by summing up torque provided by a head arm and the torque by the torque imparting apparatus itself is made uniform irrespective of rotational position of a head arm, and acts in a direction which causes the magnetic head to move toward the CSS zone.

REFERENCES:
patent: 4331991 (1982-05-01), Morehouse et al.
patent: 4807062 (1989-02-01), Onodera
IBM Technical Disclosure Bulletin, vol. 4, No. 6 Nov. 1961, Actuator, Kochenburger.

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