Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1983-03-16

1984-07-17

Pianalto, Bernard D.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

428457, 428694, 428702, 428900, H01F 1002

Patent

active

044606516

ABSTRACT:
A magnetic recording medium comprises a magnetic layer coated on a substrate and composed of ferromagnetic metal or alloy powder dispersed in a binder, wherein the magnetic layer contains Al.sub.2 O.sub.3 having an average particle size of at most 1 .mu.m and an .alpha.-form rate of from 60 to 90%.

REFERENCES:
patent: 4404238 (1983-09-01), Baldwin

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