Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1982-04-01

1985-01-22

Pianalto, Bernard D.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

427 39, 428693, 428695, 428900, B05D 512

Patent

active

044952422

ABSTRACT:
A nonbinder type of magnetic recording medium is disclosed. The binder is comprised of a non-magnetic support having thereon, in sequence, a thin magnetic metal film laminated using the evaporation technique and a protecting film, with the thin magnetic metal film converted in its surface part alone to a metal oxide layer by being oxidized with oxygen plasma, to a metal nitride layer by being nitrided with nitrogen plasma or to a glow discharge-processed layer. The protecting film includes a high molecular weight compound, a higher fatty acid, a fatty acid ester or a combination thereof, laminated on the metal oxide layer, the metal nitride layer or the glow discharge-processed layer.

REFERENCES:
patent: 3892888 (1975-07-01), Halaby et al.
patent: 4171399 (1979-10-01), Allen
patent: 4307156 (1981-12-01), Yanagisawa

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