Method of manufacturing magnetic recording medium

Details Method of manufacturing magnetic recording medium Method of manufacturing magnetic recording medium

1983-03-10

1984-10-16

Pianalto, Bernard D.

Coating processes

Magnetic base or coating

Magnetic coating

427130, 427131, 427132, 427251, 4272557, B05D 512

Patent

active

044774885

ABSTRACT:
In making magnetic recording media by vapor-depositing magnetic metal film containing Co-Cr with 70-90 weight % Co as host material on a high polymer substrate, with or without intermediate layer(s) inbetween, making the high polymer substrate run around a cylindrical can, condition is selected such that linear expansion coefficient of the substrate is 1.0.times.10.sup.-5 -2.9.times.10.sup.-5 /.degree.C. and temperature of the can surface is 150.degree.-300.degree. C.; thereby normal or inverse curling of the resultant recording medium is substantially eliminated.

REFERENCES:
patent: 3342633 (1967-09-01), Bate et al.
patent: 4226681 (1980-10-01), Shirahata et al.

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