Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1985-06-19

1988-05-03

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

427131, 428328, 428329, 428694, 428900, G11B 564, G11B 570

Patent

active

047419547

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 the back coating layer contains an inorganic pigment having a Mohs hardness of at least 5 and carbon black, and the inorganic pigment is in an amount of at most 1/9 by weight relative to the carbon black.

REFERENCES:
patent: 4310599 (1982-01-01), Akashi et al.
patent: 4328935 (1982-05-01), Steel
patent: 4333985 (1982-06-01), Shirahata et al.
patent: 4390601 (1983-06-01), Ono et al.
patent: 4416943 (1983-11-01), Saito
patent: 4544601 (1985-10-01), Yamaguchi et al.
patent: 4592952 (1986-06-01), Miyoshi et al.
patent: 4600638 (1986-07-01), Ishikuro et al.
patent: 4618535 (1986-10-01), Nishimatsu et al.

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