Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1990-10-01
1991-11-26
Thibodeau, Paul J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
427 50, 427128, 427250, 428694, 428900, G11B 2300
Patent
active
050681443
ABSTRACT:
A perpendicular magnetic recording medium comprising a non-magnetic substrate and a magnetic layer which is formed on at least one surface of the substrate and comprises acicular particles of ferromagnetic metal oriented perpendicularly to a plane of the layer and an organic polymer filled in spaces between the acicular particles so as to surround the acicular particules, wherein a volume content of the organic polymer is about 5 to 55% by volume of the whole volume of the magnetic layer, which medium has not only good recording and reproducing characteristics but also improved durability.
REFERENCES:
patent: 4260466 (1981-04-01), Shirahata et al.
patent: 4428974 (1984-01-01), Okita et al.
patent: 4588656 (1986-05-01), Kitamoto et al.
Fujiwara Hideo
Kitakami Osamu
Ogawa Youichi
Ojima Kiyotaka
Wakai Kunio
Hitachi Maxell Ltd.
Thibodeau Paul J.
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