Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1982-09-21
1986-02-18
Pianalto, Bernard D.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428694, 428900, H01F 1002
Patent
active
045713626
ABSTRACT:
A magnetic recording medium contains, in the coating layer of a magnetic powder, 0.5-15% by weight of at least either nonmagnetic powder of Al.sub.2 O.sub.3 or Cr.sub.2 O.sub.3 and 0.5-15% by weight of .alpha.-Fe.sub.2 O.sub.3, the sum of the proportions of the nonmagnetic powder and .alpha.-Fe.sub.2 O.sub.3 not exceeding 20% by weight, all on the basis of the weight of the magnetic powder. The nonmagnetic powder and .alpha.Fe.sub.2 O.sub.3 both range in particle size from 0.1 to 2 .mu.m.
REFERENCES:
patent: 3959553 (1976-05-01), Hartmann et al.
Nakashima Yutaka
Okada Akira
Sato Nobuhiro
Pianalto Bernard D.
TDK Electronics Co. Ltd.
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