Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1990-06-12

1991-10-15

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428694, 428900, G11B 2300

Patent

active

050573527

ABSTRACT:
A magnetic recording medium is disclosed. The surface of the magnetic layer has a Ns/Ns(t) ratio of 0.10 to 0.35, wherein the Ns is a number of spikes protruding from an average line of a surface roughness cross section curve by not less than 0.01 .mu.m and the Ns(t) is a total number of spikes protruding from the average line. The medium is improved in electromagnetic characteristics, contamination of magnetic head and rubbing noise.

REFERENCES:
patent: 4803132 (1989-02-01), Kishimoto et al.
patent: 4810555 (1989-03-01), Shimozawa et al.
patent: 4812351 (1989-03-01), Okita et al.

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