Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1985-07-22

1987-10-13

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

428694, 428695, 428323, 428900, G11B 564, G11B 570

Patent

active

046998195

ABSTRACT:
A magnetic recording medium comprising a non-magnetic substrate, a magnetic recording layer formed on one side of the substrate and a back coating layer formed on the other side of the substrate, wherein said back coating layer contains graphitized carbon black having an average particle size of from 10 to 50 m.mu.m as measured by an electron microscope.

REFERENCES:
patent: 4135031 (1979-01-01), Akashi et al.
patent: 4310599 (1982-01-01), Akashi et al.
patent: 4419406 (1983-12-01), Isobe et al.
patent: 4474843 (1984-10-01), Miyoshi et al.
patent: 4486500 (1984-12-01), Naruo et al.
patent: 4547419 (1985-10-01), Nishimatsu
patent: 4632867 (1986-12-01), Kuse et al.

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