Magnetic recording medium

Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

427131, 428329, 428694, 428900, G11B 2300

Patent

active

049463748

ABSTRACT:
A magnetic recording medium which comprises a first magnetic layer on a base and a second magnetic layer thereon, the first magnetic layer containing magnetic particles having an average particle length (long axis diameter) of 0.4 to 0.7 .mu., the second magnetic layer containing magnetic particles having an average particle length (long axis diameter) of 0.25 to 0.35 .mu., the coercive force of which being 370 to 460 oersteds, and the ratio of coercive force of the upper or second layer to that of the lower or first magnetic layer being 1.05/l to 1.5/l. The magnetic recording medium has excellent sensitivity and frequency characteristics at entire frequency bands with less noise.

REFERENCES:
patent: 4075384 (1978-02-01), Suzuki et al.
patent: 4210946 (1980-07-01), Iwasaki et al.
patent: 4237189 (1980-12-01), Deffeyes
patent: 4281043 (1981-07-01), Deffeyes
patent: 4409281 (1983-10-01), Kitamoto et al.
patent: 4410583 (1983-10-01), Hanoaka
patent: 4410590 (1983-10-01), Kawahara et al.
patent: 4442159 (1984-04-01), Dezawa et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

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.

Rate now

     

Profile ID: LFUS-PAI-O-957451

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.