Magnetic material for recording media

Details Magnetic material for recording media Magnetic material for recording media

1979-02-07

1980-12-16

Cooper, Jack

Compositions

Magnetic

With wax, bitumen, resin, or gum

252 6255, 252 6256, 252 626, 252 6262, 252 6264, 427128, 427132, C04B 3526, C04B 3536, C04B 3538

Patent

active

042396379

ABSTRACT:
A magnetic material for magnetic recording media, comprising acicular particles of a conventional magnetic material and a ferrite powder amounting to about 0.5-20 Wt% of the acicular particles. Preferably the ferrite powder has a roundish particle shape. The use of this magnetic material in the form of a dispersion of the acicular magnetic particles and the ferrite particles in a usual binder makes it possible to afford improved rectangular ratio to the recording media by a conventional orientation process.

REFERENCES:
patent: 3740266 (1973-06-01), Akashi et al.
patent: 4002804 (1977-01-01), Akashi et al.

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