Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1987-04-22

1988-06-07

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

427 40, 427 41, 427128, 427131, 427132, 427 44, 427 541, 428336, 428461, 428463, 428421, 428422, 428522, 428694, 428695, 428900, G11B 572

Patent

active

047496088

ABSTRACT:
A magnetic recording medium comprising a substrate, a ferromagnetic metal thin film on the substrate, and a topcoat on the thin film exhibits improved strength and durability when the topcoat is comprised of a plasma-polymerized film prepared by activating a gaseous hydrocarbon monomer or a mixture thereof with a carrier gas into a plasma under specific conditions. The plasma-polymerized film consists of carbon and hydrogen in an atomic ratio of C/H of from 1:1 to 6:1 and has a thickness of 3 to 15 .ANG. and a contact angle with water in the range from 60.degree. to 120.degree.. An organic coating may be present on the plasma-polymerized film.

REFERENCES:
patent: 4368239 (1983-01-01), Nakajima
patent: 4419404 (1983-12-01), Arai
patent: 4429024 (1984-01-01), Ueno
patent: 4565734 (1986-01-01), Arai
patent: 4575475 (1986-03-01), Nakayama
patent: 4582746 (1986-04-01), Shirahata
patent: 4599266 (1986-07-01), Nakayama
patent: 4601950 (1986-07-01), Iida
patent: 4636435 (1987-01-01), Yanagihara
patent: 4693927 (1987-09-01), Nishikawa
patent: 4699847 (1987-10-01), Nakayama
patent: 4711809 (1987-12-01), Nishikawa

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