Magnetic recording medium having a magnetic layer with specified

Details Magnetic recording medium having a magnetic layer with specified Magnetic recording medium having a magnetic layer with specified

1994-09-30

1995-12-26

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

428323, 428328, 428329, 428330, 428336, 428341, 428694BR, 428694BS, 428900, 427128, G11B 500

Patent

active

054786266

ABSTRACT:
Disclosed are a magnetic recording medium which comprises a non-magnetic support, one or more coating layers provided on the non-magnetic support and an upper layer of the coating layers being a magnetic layer containing ferromagnetic metallic powder with the total thickness of the coating layers being 0.5 to 2.5 .mu.m, wherein the magnetic layer has a surface roughness Ra of 1.0 to 4.6 nm and a surface roughness R10z of 8.0 to 35.0 nm, which satisfy the relations of:

REFERENCES:
patent: 5061571 (1991-10-01), Sakamoto
patent: 5069949 (1991-12-01), Matsuda et al.
patent: 5126215 (1992-06-01), Aonuma et al.
patent: 5252392 (1993-10-01), Goto et al.
patent: 5326618 (1994-07-01), Ryoke et al.
patent: 5340635 (1994-08-01), Isobe et al.
patent: 5385779 (1995-01-01), Miura et al.

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