Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1986-10-15
1989-01-10
Thibodeau, Paul J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428329, 428331, 428336, 428694, 428695, 428900, G11B 570
Patent
active
047973218
ABSTRACT:
A magnetic recording disc having a high durability and good electromagnetic conversion characteristics which comprises a non-magnetic support and a magnetic layer provided on at least one surface of the support, wherein the magnetic layer comprises magnetic powder, a resinous binder, polishing particles and a lubricating agent, characterized in that the polishing particles have a Mohs' scale of hardness of not less than 7 and an average particle size of 0.25 r to 0.75 r (r being the thickness (.mu.m) of the magnetic layer) and the lubricating agent is a fatty acid ester having a melting point of not higher than 10.degree. C.
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patent: 4546038 (1985-10-01), Yamaguchi et al.
patent: 4554220 (1985-11-01), Yamamoto et al.
patent: 4647502 (1987-03-01), Miyake et al.
patent: 4647503 (1987-03-01), Yamaguchi et al.
Funahashi Masaya
Inoue Ken-ichi
Miyake Akira
Miyata Teruhisa
Norimatsu Kohji
Hitachi Maxell Ltd.
Thibodeau Paul J.
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