Magnetic disk apparatus

Details Magnetic disk apparatus Magnetic disk apparatus

1981-02-17

1983-01-25

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360133, G11B 5012, G11B 2302

Patent

active

043706878

ABSTRACT:
A magnetic disk apparatus utilizing both fixed and removable disk mounted on a common spindle, wherein a first head-positioning device for supporting a first group of magnetic heads cooperating with fixed disk and a second head-positioning device for supporting a second group of magnetic heads cooperating with removable disk means are independently controlled in operation; a drive spindle, fixed disk, first group of magnetic heads and first head positioning device are received in an enclosure, which is removably mounted on a base casting and shot off from dust particles; the removable disk is exposed to the outside of the enclosure; and the second head-positioning device is securely mounted on the base casting.

REFERENCES:
patent: 2899260 (1959-08-01), Farrand et al.
patent: 3534344 (1970-10-01), Santana
patent: 3786454 (1974-01-01), Lissner et al.
patent: 3800325 (1974-03-01), O'Brien
patent: 3849800 (1974-11-01), Cuzner et al.
patent: 3936786 (1976-02-01), Peterson et al.
patent: 3975768 (1976-08-01), Jacques et al.
patent: 4130845 (1978-12-01), Kulma

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