Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1989-12-11
1991-06-25
Thibodeau, Paul J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428336, 428408, 428694, 428900, G11B 2300
Patent
active
050265989
ABSTRACT:
There is disclosed a magnetic recording medium comprising a support and provided thereon a plurality of layers. The layers comprise an outermost magnetic layer and a lower magnetic layer, wherein the outermost magnetic layer contains carbon black having an average primary particle size ranging from 40 m.mu. to 300 m.mu., and the lower magnetic layer contains carbon black having an average primary particle size ranging from 5 m.mu. to 30 m.mu..
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Patents Abstracts of Japan, vol. 12, No. 136 (p. 694) (2983); 4/26/88, JPA-62-256,219; 11/7/87.
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Kawahara Setsuko
Koyama Noboru
Nakajima Noboru
Nakano Yasushi
Bierman Jordan B.
Konica Corporation
Thibodeau Paul J.
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