Magnetic recording medium and process for producing the same

Details Magnetic recording medium and process for producing the same Magnetic recording medium and process for producing the same

1985-03-15

1987-09-15

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

427 41, 427128, 427131, 427132, 428336, 428421, 428422, 428447, 428461, 428463, 428694, 428900, G11B 572

Patent

active

046939270

ABSTRACT:
A magnetic recording medium has an improved protective film covering a thin magnetic metal thin film provided on a non-magnetic support. The protective film consists of a plurality of layers formed by plasma polymerization, the base layer of which has a density of 0.7 to 1.5 g/cm.sup.3 and the surface layer of which has a density of not less than 1.2 g/cm.sup.3. This magnetic recording medium has good scratch resistance, weather resistance and abrasion resistance in addition to extremely small spacing loss. The magnetic recording medium can be produced by plasma polymerization of a wide variety of monomeric compounds.

REFERENCES:
patent: 4419404 (1982-02-01), Arai
patent: 4521482 (1983-06-01), Arai
patent: 4565734 (1986-01-01), Arai
patent: 4582746 (1986-04-01), Shirahata
patent: 4599266 (1986-07-01), Nakayama
patent: 4601950 (1986-07-01), Iida
patent: 4636435 (1987-01-01), Yanagihara

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