Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1985-10-10

1987-02-24

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

427128, 427131, 428148, 428149, 428150, 428195, 428201, 428694, 428695, 428900, G11B 572

Patent

active

046457038

ABSTRACT:
A magnetic recording medium comprises steep mountain-shaped protrusions having heights ranging 50-600 .ANG. and distributed at a rate of 1.times.50.sup.5 -1.times.10.sup.8 protrusions/mm.sup.2 on a surface of ferromagnetic metal layer and further thereon a lubricant layer; the magnetic recording medium is suitable for VTR tape which has a satisfactory durability for repeated use and eliminates head clogging and squealing.

REFERENCES:
patent: 3019125 (1962-01-01), Eggenberger et al.
patent: 4326229 (1982-04-01), Yanagisawa
patent: 4337288 (1982-06-01), Takenaka et al.
patent: 4348446 (1982-09-01), Mitsuishi
patent: 4425404 (1984-01-01), Suzuki et al.
patent: 4514451 (1985-04-01), Suzuki
patent: 4540618 (1985-09-01), Suzuki
patent: 4564549 (1986-01-01), Suzuki

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