Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1985-07-29

1987-06-02

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428329, 428694, 428900, G11B 568

Patent

active

046703373

ABSTRACT:
In a magnetic recording medium comprising a base and a magnetic coating layer formed thereon which consists of ferromagnetic particles dispersed in a binder, the magnetic layer contains from 3 to 15 percent by weight, on the basis of the magnetic powder weight, of abrasive particles having a Mohs hardness of 6 or upward, in such a manner that the average number of the abrasive particles per unit area of the magnetic layer surface is at least 0.25 per square micron. The magnetic powder is a magnetic metal powder based on iron, and the abrasive particles are angular rather than granular in shape.

REFERENCES:
patent: 4328935 (1982-05-01), Steel
patent: 4420408 (1983-12-01), Kajimoto et al.
patent: 4420532 (1983-12-01), Yamaguchi et al.
patent: 4425400 (1984-01-01), Yamaguchi et al.
patent: 4571362 (1986-02-01), Sato et al.

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