Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1998-10-27

2000-10-31

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

428694BR, 428900, G11B 570

Patent

active

06139937&

ABSTRACT:
A magnetic recording medium in which the bearing ratio Tp of the magnetic layer on a slice level at a depth of 45 nm from the highest peak of the surface profile measured with an atomic force microscope is 3% to 60%, and the difference .DELTA..mu. between the maximum frictional coefficient and the minimum frictional coefficient of the magnetic layer ranges from 0.1 to 0.0001 as measured under conditions of 5 mm.sup.2 in contact area, 2 g in weight of a measuring head, 0.04 to 0.2 N in load applied, 3 mm/sec in speed, and 140 mm in length of measurement.

REFERENCES:
patent: 5353182 (1994-10-01), Nakamura et al.
patent: 5549954 (1996-08-01), Otsuka et al.
patent: 5820969 (1998-10-01), Satoh

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