Process for preparation of vertical magnetic recording medium

Details Process for preparation of vertical magnetic recording medium Process for preparation of vertical magnetic recording medium

1988-11-02

1989-12-19

Pianalto, Bernard

Coating processes

Magnetic base or coating

Magnetic coating

427128, 427132, 427251, 4272553, 427296, B05D 512

Patent

active

048882119

ABSTRACT:
A vertical magnetic recording medium is prepared by a process for vacuum-depositing a metal selected from cobalt and iron to form a magnetic layer on a substrate, wherein an oxygen gas and at least one gas chemically inactive in the vacuum deposition system, which is selected from nitrogen, argon, helium, neon, xenon, radon, methane and ethane, are introduced into the vacuum to an extent such that the pressure in the vicinity of the substrate is 1.times.10.sup.-3 to 5.times.10.sup.-2 Torr.

REFERENCES:
patent: 4454195 (1984-06-01), Fukuda et al.
patent: 4477489 (1984-10-01), Yanai et al.
Patents Abstracts on Japan, vol. 6, No. 255 (P-162)(1133), 14th Dec. 1982.
IEEE Transactions on Magnetics, vol. MAG-19, No. 5, Sep. 1983, pp. 1635-1637, IEEE, New York, US; K. Ozawa et al.; "Iron Thin Film Magnetic Recording Tape by Vacuum Deposition".

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