Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1996-07-18

1998-06-30

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428323, 428329, 428336, 428694BS, 428900, B32B 702

Patent

active

057731330

ABSTRACT:
A magnetic recording medium according to the present invention exhibits not only a good surface property but also a high electromagnetic transduction characteristic. The magnetic recording medium includes a non-magnetic substrate, a lower layer provided on the non-magnetic substrate and composed of a non-magnetic powder and a binder and an upper layer provided on the lower layer and composed of a ferromagnetic powder and a binder, wherein the upper layer has a thickness of not more than 0.5 .mu.m, and the lower layer contains as said non-magnetic powder an acicular iron oxide powder which has a longer axis length of 0.05 to 0.2 .mu.m and an aspect ratio of 2 to 10.

REFERENCES:
patent: 5587232 (1996-12-01), Hayashi et al.

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