Magnetic recording medium comprising a magnetic layer of ferroma

Details Magnetic recording medium comprising a magnetic layer of ferroma Magnetic recording medium comprising a magnetic layer of ferroma

1995-05-31

1996-07-30

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

428328, 428336, 428694BA, 428694BS, 428900, G11B 500

Patent

active

055409750

ABSTRACT:
A magnetic recording medium comprising a nonmagnetic support having thereon a magnetic layer comprising a ferromagnetic metal powder and a binder resin, or having in this order thereon a nonmagnetic layer comprising a nonmagnetic material powder and a binder, and a magnetic layer comprising a ferromagnetic metal powder and a binder resin, wherein the magnetic layer exhibits a coercive force of from 2,000 to 3,000 Oe, and has a thickness of from 0.05 to 0.3 .mu.m, a surface roughness of from 1 to 3 nm, and the proportion of magnetizable components that are inverted by an external magnetic field of not less than 3,000 Oe in the magnetic layer is from 1% to (0.0225.times.(coercive force of magnetic layer)-38)% as determined by the remanence curve of the magnetic layer.

REFERENCES:
patent: 5384175 (1995-01-01), Kojima et al.
patent: 5443879 (1995-08-01), Kodama et al.

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