Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1990-11-13
1992-11-17
Thiodbeau, Paul J.
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
428694, 428900, 4284259, 428 65, 360133, 206444, 252 6254, G11B 500
Patent
active
051642395
ABSTRACT:
A magnetic disc is disclosed, which comprises a disc-shaped magnetic recording medium having a magnetic layer comprising a ferromagnetic powder and a binder and a case having a liner of a nonwoven fabric comprising a polyester fiber or a polyacrylonitrile fiber in a ratio of not less than 30% by weight. The binder of the magnetic recording medium comprises a modified polyurethane resin containing a a polar group selected from the group consisting of a -SO.sub.3 M group, a --OSO.sub.3 M group, a --COOM group, a --PO(OM).sub.2 group and a --OPO(OM).sub.2 group, in which M is a hydrogen atom or a alkali metal atom, or a hydroxyl group provided that the polar group may form an intramolecular salt.
REFERENCES:
patent: 4085907 (1978-04-01), Suzuki et al.
patent: 4154886 (1979-05-01), Yamazaki et al.
patent: 4784914 (1988-11-01), Matsufuji et al.
patent: 4786557 (1988-11-01), Kakuishi et al.
patent: 4812938 (1989-03-01), Rogers et al.
patent: 4845583 (1989-07-01), Zimmerman et al.
patent: 4998176 (1991-03-01), Takemae et al.
patent: 5051287 (1991-09-01), Yamada et al.
Kato Hisato
Matsumoto Kazumasa
Ozawa Kimio
Yamagishi Hiroaki
Bierman Jordan B.
Konica Corporation
Resan Stevan A.
Thiodbeau Paul J.
LandOfFree
Magnetic disc assembly comprising a disc having a magnetic layer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic disc assembly comprising a disc having a magnetic layer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic disc assembly comprising a disc having a magnetic layer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1170801