Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1996-06-26

1998-05-12

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428215, 428323, 428328, 428336, 4284259, 428522, 428694BN, 428694BR, 428694BG, 428694BC, 428900, G11B 5708

Patent

active

057502331

ABSTRACT:
A magnetic recording medium is disclosed, comprising a non-magnetic support having thereon a magnetic layer containing a ferromagnetic metal power and a binder resin as a main component and an abrasive as a sub-component, wherein the ferromagnetic metal powder contains iron as a main component and aluminum in an amount of from 1 to 25 atm % based on the Fe atom, the magnetic layer contains abrasive particles having a Moh's hardness of 6 or more in an amount of from 4 to 18 parts by weight per 100 parts by weight of the ferromagnetic metal powder, and the abrasives exposure unit having a size of 0.3 .mu.m or more observed through an electron microscope on the magnetic layer surface is 3.5 pieces/100 .mu.m.sup.2 or less.

REFERENCES:
patent: 4801505 (1989-01-01), Ejiri et al.
patent: 5035948 (1991-07-01), Saito et al.
patent: 5456977 (1995-10-01), Ejiri et al.
patent: 5503922 (1996-04-01), Shimasaki et al.

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