Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1976-08-24

1978-06-27

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

360134, 427128, 428337, 428339, 428409, 428900, B32B 1504, G11B 574

Patent

active

040976505

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), Bate 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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