Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1981-04-17

1983-10-11

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

252 6254, 360134, 360135, 360136, 427131, 427132, 427128, 428336, 428694, 428695, 428900, G11B 570, B32B 702

Patent

active

044092814

ABSTRACT:
A magnetic recording medium is described comprising a first layer comprising a magnetic iron oxide powder dispersed in a binder formed on a nonmagnetic support, a second layer formed on the first layer comprising a ferromagnetic metal powder dispersed in a binder, and having a greater coercive force than the first layer, and a third layer comprising a thin ferromagnetic metal film formed on the second layer in a thickness of from 0.01.mu. to 0.5.mu..

REFERENCES:
patent: 3761311 (1973-09-01), Perrington
patent: 4172171 (1979-10-01), Suzuki et al.
patent: 4210946 (1980-07-01), Iwasaki et al.
patent: 4323621 (1982-04-01), Kober

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