Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1982-12-06

1984-01-31

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of metal

4284258, 4284259, 428692, 428694, 428900, 427128, 252 6254, 360134, 360135, 360136, G11B 570, B32B 2730

Patent

active

044290179

ABSTRACT:
A magnetic recording medium is disclosed. The medium is comprised of a non-magnetic support base having a magnetic layer thereon. Magnetic layer is comprised of a binder having a ferromagnetic powder dispersed therein. The binder is comprised of a copolymer of vinyl chloride/vinylidene chloride/vinyl alcohol in a ratio of 20 to 89 wt % of vinyl chloride: 10 to 60 wt % of vinylidene chloride: 1 to 20 wt % of vinyl alcohol. By utilizing the particularly disclosed polymer as the binder the magnetic recording medium has a superior capacity with respect to reproducing original sound and images and also has improved running properties and durability.

REFERENCES:
patent: 3840400 (1974-10-01), Yamada
patent: 4153754 (1979-08-01), Huisman
patent: 4307154 (1981-12-01), Hosaka
patent: 4329398 (1982-05-01), Hosaka
patent: 4370384 (1983-01-01), Hosaka

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