Magnetic recording medium having a magnetic layer comprising hex

Details Magnetic recording medium having a magnetic layer comprising hex Magnetic recording medium having a magnetic layer comprising hex

1995-09-07

1997-02-11

Resan, Stevan A.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428336, 428694BH, 428694BM, 428694BS, 428900, G11B 5706

Patent

active

056019165

ABSTRACT:
A magnetic recording medium is described, which comprises a nonmagnetic support having thereon at least one magnetic layer containing ferromagnetic particles dispersed in a binder, wherein the magnetic recording medium has at least one magnetic layer containing at least hexagonal ferrite magnetic particles and the magnetic layer containing the hexagonal ferrite magnetic particles has a coercive force, Hc, of from 1,300 to 5,000 Oe, a ratio of the Hc to an anisotropic magnetic field HK thereof, Hc/HK, of from 0.30 to 1.0, and a squareness ratio of in-plane direction, SQ, of from 0.65 to 1.00.

REFERENCES:
patent: 4778734 (1988-10-01), Ohdan et al.
patent: 5075169 (1991-12-01), Nagai et al.
patent: 5079092 (1992-01-01), Maekawa et al.
patent: 5114801 (1992-05-01), Aoki et al.
patent: 5118575 (1992-06-01), Maekawa et al.
patent: 5503911 (1996-04-01), Aoki et al.

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