Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...
Patent
1994-01-13
1997-01-28
Nakarani, D. S.
Stock material or miscellaneous articles
Structurally defined web or sheet
Continuous and nonuniform or irregular surface on layer or...
427131, 428336, 428694B, 428694BS, 428694BR, 428694BN, 428694BH, 428694BM, 428900, B05D 512, G11B 566, G11B 570
Patent
active
055976387
ABSTRACT:
The present invention provides a magnetic recording medium comprising a nonmagnetic layer mainly having an inorganic nonmagnetic particle dispersed in a binder provided on a nonmagnetic flexible support and a magnetic layer having a ferromagnetic particle dispersed in a binder, characterized in that the magnetic layer comprises a hexagonal ferrite magnetic material and exhibits a thickness of 1 .mu.m or less, or 2.5 .mu.m or less in total if there are a plurality of magnetic layers, a central line average surface roughness of 0.006 .mu.m or less, SFD of 0.3 or less in the longitudinal direction on the plane and Br/Hc of less than 1.5, whereby the short wavelength recording can be remarkably improved in electro-magnetic conversion characteristics, particularly 7 MHz output.
REFERENCES:
patent: 4396668 (1983-08-01), Saito et al.
patent: 4442159 (1984-04-01), DeZawa et al.
patent: 4720411 (1988-01-01), Shimozawa et al.
patent: 5098773 (1992-03-01), Saito et al.
patent: 5188907 (1993-02-01), Kawahara et al.
Saito Shinji
Yamazaki Nobuo
Fuji Photo Film Co. , Ltd.
Nakarani D. S.
Sand Stephen
LandOfFree
Magnetic recording medium 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 recording medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording medium will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-940470