Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1998-02-13

2000-03-07

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

428323, 428336, 428694BS, 428694BR, 428900, G11B 0568

Patent

active

060337605

ABSTRACT:
A magnetic recording medium having a nonmagnetic substrate, an intermediate layer containing at least a nonmagnetic powder, and a magnetic layer containing a ferromagnetic powder and a binder, wherein the magnetic layer has an indentation hardness of 0.3 GPa or more, and the surface profile of the magnetic layer satisfies the following conditions (a) to (c): (a) the 10 point height parameter R.sub.Z is 100 nm or less; (b) the difference between the maximum peak-to-valley distance PV and R.sub.Z (PV-R.sub.Z) is 10 nm or less; and (c) the skewness Rsk is -2 or more and less than 0, has excellent electromagnetic conversion characteristics and running durability.

REFERENCES:
patent: 5202810 (1993-04-01), Nakamura et al.
patent: 5340635 (1994-08-01), Isobe et al.

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