Magnetic recording medium having an improved magnetic layer usin

Details Magnetic recording medium having an improved magnetic layer usin Magnetic recording medium having an improved magnetic layer usin

1986-02-21

1988-05-31

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

427128, 428694, 428900, G11B 5702

Patent

active

047480815

ABSTRACT:
A magnetic recording medium of the type comprising a non-magnetic substrate and a magnetic recording layer formed on at least one side of the substrate. The magnetic recording layer comprises particulate alpha-Fe.sub.2 O.sub.3 and carbon black as additives dispersed in a resin binder along with a magnetic powder. These additives serve to improve magnetic characteristics and a ilght-shielding property. When vinyl chloride-vinyl alcohol copolymers are used as the binder, further improvements are achieved.

REFERENCES:
patent: 4363850 (1982-12-01), Yasui et al.
patent: 4425400 (1984-01-01), Yamaguchi et al.
patent: 4499121 (1985-02-01), Yamaguchi et al.
patent: 4551386 (1985-11-01), Yamaguchi et al.

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