Magnetic recording medium and a method of fabricating the same

Details Magnetic recording medium and a method of fabricating the same Magnetic recording medium and a method of fabricating the same

1992-06-23

1997-09-30

Kiliman, Leszek

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Web or sheet containing structurally defined element or...

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428336, 428408, 428694T, 428694TP, 428694TC, 428695, 428698, 428699, 428704, 428707, 428900, G11B 566

Patent

active

056724250

ABSTRACT:
A magnetic recording medium comprised of a nonmagnetic support; a magnetic metal thin film formed on one major surface of the nonmagnetic support; and a protective film of a corrosion-resistant metal or a multilayer protective film structure consisting of a corrosion-resistant metal film and a durable protective film of a hard material. A multilayer protective film structure is formed by sputtering a corrosion-resistant protective film and a durable protective film over the magnetic metal thin film while the nonmagnetic support travels along the circumference of a cooling cylinder by using at least one target of a corrosion-resistant metal and at least one target of a hard material, or by using a composite target composed of at least one corrosion-resistant metal and one hard material. The protective film suppresses the corrosion of the magnetic metal thin film and improves the corrosion resistance and durability of the magnetic recording medium.

REFERENCES:
patent: 4411963 (1983-10-01), Aine
patent: 4889767 (1989-12-01), Yokoyama et al.
Patent Abstracts of Japan vol. 7, No. 101 (P-194) 28 Apr. 1983 & JP-A-58 026 320 (Matsushita Denki Sangyo KK) 16 Feb. 1983.

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