Magnetic recording disk

Details Magnetic recording disk Magnetic recording disk

1996-02-23

1998-03-17

Resan, Stevan A.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428329, 428332, 428336, 428694BH, 428694BS, 428694BM, 428900, G11B 582

Patent

active

057284423

ABSTRACT:
A magnetic recording disk which comprises a nonmagnetic support having provided thereon a magnetic layer comprising a hexagonal ferrite magnetic material dispersed in a binder, wherein the magnetic layer has an orientation ratio of 0.9 or more, a vertical diamagnetic correction squareness ratio of from 0.3 to 0.55, an in-plane coercive force of from 1,400 to 3,000 Oe, a vertical-direction coercive force of from 1,400 to 3,000 Oe, and a dry thickness of 0.8 .mu.m or less.

REFERENCES:
patent: 5300314 (1994-04-01), Hayakawa et al.
patent: 5396391 (1995-03-01), Tanaka et al.

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