Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1981-06-17

1983-01-04

Pianalto, Bernard D.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428469, 428693, 428694, 428900, H01F 1002

Patent

active

043672639

ABSTRACT:
A magnetic recording medium comprises a first magnetic layer containing magnetite or a cobalt doped magnetite which is coated on a non-magnetic substrate; and a second magnetic layer coating a cobalt doped .gamma.-Fe.sub.2 O.sub.3 which is coated on said first magnetic layer.
The magnetic recording medium has a high recording sensitivity, a high dynamic range, a less output fluctuation and especially superior sensitivity in low frequency band and superior maximum output level without a deterioration of transfer characteristics.

REFERENCES:
patent: 4075384 (1978-02-01), Suzuki et al.
patent: 4265931 (1981-05-01), Tamai et al.

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