Recording method employing a magnetic recording medium

Details Recording method employing a magnetic recording medium Recording method employing a magnetic recording medium

1977-11-21

1979-05-08

Lesmes, George F.

Dynamic magnetic information storage or retrieval

General recording or reproducing

360131, 427131, 427132, 427250, 428409, 428900, G11B 5008

Patent

active

041539206

ABSTRACT:
This invention relates to a magnetic recording medium comprising a ferromagnetic metal thin film as a magnetic recording layer on a non-magnetic flexible support, in which the surface roughness of the support is 0.10 .mu.m or less and the period of the surface roughness is v/10.sup.6 .mu.m or less where v represents a relative speed between a magnetic head and magnetic recording medium by .mu.m/sec. In the case of providing an undercoated layer between the magnetic recording layer and non-magnetic flexible support, the surface roughness of the undercoated layer is adjusted to 0.10 .mu.m or less and the period of the surface roughness is adjusted to v/10.sup.6 .mu.m or less.

REFERENCES:
patent: 3342632 (1967-09-01), Bates et al.
patent: 3442686 (1969-05-01), Lenoble et al.
patent: 3881046 (1975-04-01), Akashi et al.
patent: 3967025 (1976-06-01), Tanabe et al.

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