Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1990-07-25

1993-05-04

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

428323, 428329, 428336, 428900, 428694BG, B32B 310, B32B 516, G11B 566

Patent

active

052080919

ABSTRACT:
A magnetic recording medium comprising at least two magnetic layers provided on a non-magnetic support, and a backing layer on the support on the side opposite to said magnetic layers, wherein said backing layer has, on the surface thereof, the protrusions each having a height of the peaks thereof within the range of 0.05 .mu.m to 0.6 .mu.m wherein the amount of the protrusions is within the range of 10,000 to 100,000 cm.sub.2 and an interval of the peaks of not less than 10 .mu.m.

REFERENCES:
patent: 4135031 (1979-01-01), Akashi et al.
patent: 4506000 (1985-03-01), Kubota et al.
patent: 4612235 (1986-09-01), Ushimaru et al.
patent: 4865924 (1989-09-01), Saito et al.
patent: 4946740 (1990-08-01), Ono et al.
patent: 4992330 (1991-02-01), Kawahara et al.
patent: 5026598 (1991-06-01), Koyama et al.

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