Magnetic recording disk

Details Magnetic recording disk Magnetic recording disk

1980-06-26

1983-12-27

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

Disk

360131, 427131, 428900, G11B 570, G11B 582

Patent

active

044234546

ABSTRACT:
A magnetic recording disk comprising a non-magnetic substrate and two or more firmly adhering magnetizable layers applied to one or both sides thereof, the layer located directly on the substrate being magnetically isotropic, while the second layer and any additional layers exhibit orientation of the anisotropic magnetic particles parallel to the substrate and to the envisaged recording direction.

REFERENCES:
patent: 4075384 (1978-02-01), Suzuki et al.
patent: 4091158 (1978-05-01), Kasuga et al.
patent: 4277809 (1981-07-01), Fisher
patent: 4287544 (1981-09-01), Lazzari

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