Magnetic recording media having a magnetic layer including acicu

Details Magnetic recording media having a magnetic layer including acicu Magnetic recording media having a magnetic layer including acicu

1995-08-08

1997-02-18

Resan, Stevan A.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428328, 428329, 428332, 428694BN, 428900, G11B 5708

Patent

active

056040288

ABSTRACT:
The present invention provides a magnetic recording medium having excellent durability, high abrasive resistance and smoothness capable of suppressing development of uneven wear on a tape contact surface of a magnetic head at minimum. The magnetic recording medium has a base film and a magnetic layer provided on the base film. The magnetic layer includes metal magnetic powder of particles having an average long axis length of not more than 0.13 .mu.m, alumina powder of particles which have an average diameter of not more than 0.13 .mu.m, an .alpha.-rate of not more than 30% and pH of not more than 7.0, and a binder resin.

REFERENCES:
patent: 4460651 (1984-07-01), Hosaka et al.
patent: 4756962 (1988-07-01), Takamatsu et al.
patent: 4803121 (1989-02-01), Ryoke et al.
Derwent Database WPIL 88-253 416 Abstract Jul. 1988.
Derwent Database WPIL 90-120 393 Abstract Mar. 1990.
Derwent Database WPIL 90-120 392 Abstract Mar. 1990.

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