Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1985-06-20

1987-05-19

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

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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