Method of making a magnetic recording medium

Details Method of making a magnetic recording medium Method of making a magnetic recording medium

1986-11-14

1987-08-04

Pianalto, Bernard D.

Coating processes

Magnetic base or coating

Magnetic coating

156241, 264313, 427128, 428900, H01F 1002

Patent

active

046845461

ABSTRACT:
A magnetic recording medium having a magnetic coating containing therein ferromagnetic metal powder provided on a base film, wherein the magnetic recording medium being characterized in that the surface roughness of the magnetic coating, i.e., the surface roughness R.sub.rms (a unit of measurement of .mu.m) with respect to a waveform having a wavelength P in a range of from 3 to 50 .mu.m out of groups of waveforms constituting the cross-sectional waveform of the surface of the magnetic coating, satisfies the following equation.

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