Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1984-08-10
1986-08-19
Robinson, Ellis P.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
252 6254, 252 6256, 252 6257, 252 6258, 252 6259, 252 6263, 427128, 360134, 360135, 360136, 428329, 428694, 428900, G11B 570
Patent
active
046069712
ABSTRACT:
Disclosed is a magnetic recording medium comprised of a substrate and a layer of magnetic powder coated on a surface of the substrate, characterized in that the magnetic powder is hexagonal crystals having single domain crystalline magnetic anisotropy, particle sizes of 0.01 to 0.3 .mu.m, particle size/thickness ratios of 2.3 to 15 and the tapping packing rate of said magnetic powder is 15% or more.
REFERENCES:
patent: 3023166 (1962-02-01), Duinker
patent: 4341648 (1982-07-01), Kubo et al.
patent: 4414124 (1983-11-01), Endo et al.
patent: 4425401 (1984-01-01), Ido
patent: 4442159 (1984-04-01), Dezawa
patent: 4496626 (1985-01-01), Kasuga
Kubo, O., T. Ido and H. Yokoyama, "Properties of Ba Ferrite Particles for Perpendicular Magnetic Recording Media", IEEE Mag-18, 1122 (1982).
Fukasawa Masahiro
Ido Tadashi
Kubo Osamu
Maeda Tatsumi
Nomura Tutomu
Kabushiki Kaisha Toshiba
Robinson Ellis P.
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