Magnetic recording medium

Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...

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Details

427 44, 427131, 428323, 428694, 428695, 428900, G11B 564, G11B 570

Patent

active

046667547

ABSTRACT:
A magnetic recording medium comprising a non-magnetic substrate, a magnetic recording layer formed on the substrate, and a top coating layer formed on the magnetic recording layer, wherein the top coating layer contains a fine particulate pigment at its surface, and the surface roughness (R20) of the top coating layer is less than 400 .ANG..

REFERENCES:
patent: 4135031 (1979-01-01), Akashi et al.
patent: 4425404 (1984-01-01), Suzuki et al.
patent: 4452863 (1984-06-01), Takizawa et al.
patent: 4486500 (1984-12-01), Naruo et al.
patent: 4520070 (1985-05-01), Yamamoto et al.
patent: 4526833 (1985-07-01), Burguette et al.

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