Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1997-12-16

1999-06-01

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

428216, 428336, 428694TB, 428694SG, 428900, G11B 5704

Patent

active

059086840

ABSTRACT:
A magnetic recording medium capable of realizing satisfactory workability in a process for manufacturing a non-magnetic support member and the magnetic recording medium, preventing deterioration in the surface characteristic of the magnetic layer caused from transcription of the reverse side so that both excellent electromagnetic conversion characteristic and moving easiness are realized. The magnetic recording medium has a non-magnetic support member; and a magnetic layer in the form of a thin metal magnetic film formed on the non-magnetic support member, wherein the non-magnetic support member is in the form of a laminate composed of a plurality of layers, the magnetic layer is formed on a first layer of the plural layers, and the surface roughness of a surface of a second layer opposite to the surface of the second layer on which the first layer is formed is made in such a way that SRa=3 nm to 12 nm and SRz=40 nm to 300 nm.

REFERENCES:
patent: 5419942 (1995-05-01), Masuda et al.
patent: 5670236 (1997-09-01), Kotani et al.

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