Magnetic recording medium and a method for producing the same wh

Details Magnetic recording medium and a method for producing the same wh Magnetic recording medium and a method for producing the same wh

1994-10-11

1996-02-27

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428216, 428329, 428336, 428402, 428694BA, 428694BH, 428694BM, 428900, 427128, 427131, 427548, G11B 500

Patent

active

054947324

ABSTRACT:
A magnetic recording medium having a nonmagnetic supporting member and a plurality of magnetic layers formed on at least one major surface of the nonmagnetic supporting member, comprising a first longitudinally oriented magnetic layer having a first longitudinally orientation rate located uppermost and comprising a hexagonal system ferromagnetic powder, and a second longitudinally oriented magnetic layer having a second longitudinally orientation rate located between the nonmagnetic supporting member and the first longitudinally oriented magnetic layer and comprising a needle-like crystal magnetic powder, wherein the first longitudinally orientation rate of the first longitudinally oriented magnetic layer is at least 0.5 and is smaller than the second longitudinally orientation rate of the second longitudinally oriented magnetic layer.

REFERENCES:
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patent: 4784895 (1988-11-01), Mizuno et al.
patent: 5114801 (1992-05-01), Aoki et al.
patent: 5156908 (1992-10-01), Araki et al.
patent: 5384182 (1995-01-01), Ito

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