Magnetic recording medium and method of producing the same

Details Magnetic recording medium and method of producing the same Magnetic recording medium and method of producing the same

1985-09-04

1989-05-30

Thibodeau, Paul J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

427 41, 427131, 428336, 428694, 428695, 428900, G11B 564

Patent

active

048350702

ABSTRACT:
A magnetic recording medium has a non-magnetic substrate, a magnetic layer formed on the surface of the substrate containing a ferromagnetic material, and a protective film formed on the magnetic layer. The protective film is constituted by a singular layer of continuous or dispersed molecular structures in which carbon and an element constituting the magnetic layer are bonded directly or indirectly through oxygen and at least one fluorine is bonded to the carbon. This magnetic recording medium can be produced by a method comprising preparing a substrate of a non-magnetic material, forming a magnetic layer of a ferromagnetic material on the surface of the substrate, and forming, by a plasma CVD method, a protective film of a fluorine-containing molecular body having a thickness not greater than a value equivalent to 5 .ANG. on the surface of the magnetic layer.

REFERENCES:
patent: 4390562 (1983-06-01), Nippon
patent: 4419404 (1983-12-01), Arai
patent: 4429024 (1984-01-01), Veno
patent: 4495242 (1985-01-01), Arai
patent: 4565734 (1986-01-01), Arai
patent: 4582746 (1986-04-01), Shirahata
patent: 4636435 (1987-01-01), Yanagihara

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