Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1986-11-06

1988-02-23

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

427 44, 427131, 428329, 428694, 428900, G11B 570, G11B 5714

Patent

active

047269901

ABSTRACT:
A coating type magnetic recording medium particuarly suitable as a mangetic disk is provided, which comprises a substrate and a magnetic layer of a plate magnetic powder and a binder on the substrate. Selection is made such that the plate magnetic powder has an average particle diameter of up to 0.2 .mu.m and an average flakiness of at least 2, the magnetic layer is up to 1.8 .mu.m thick, and the magnetic recording medium has a coercive force of a value x in Oe and a rectangular ratio Br/Bm of a value y both in a direction perpendicular to the magnetic layer surface, which fall in the range defined by the following equations:

REFERENCES:
patent: 4425401 (1984-01-01), Ido et al.
patent: 4480004 (1984-10-01), Togawa et al.
patent: 4486496 (1984-12-01), Dezawa et al.
patent: 4517257 (1985-05-01), Shimizu et al.
patent: 4560616 (1985-12-01), Okita et al.
patent: 4565726 (1986-01-01), Oguchi et al.
patent: 4624894 (1986-11-01), Kishimoto

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