Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1986-04-09

1989-03-07

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

427 44, 428323, 428329, 428694, 428900, G11B 570

Patent

active

048105554

ABSTRACT:
In a magnetic recording medium comprising a substrate and a magnetic layer thereon, the magnetic layer is formed by coating a composition of a binder, preferably radiation-curable binder and a plate magnetic material such as hexagonal plate barium or strontium ferrite having an average particle diameter d expressed in .mu.m and an average flakiness R satisfying the following equations: 0.1<d.ltoreq.0.15 and R.gtoreq.280d-22, passing the coating through a magnetic field to orient the magnetic plates, and curing the coating.

REFERENCES:
patent: 4486496 (1984-12-01), Dezawa et al.
patent: 4552808 (1985-11-01), Fujiyama et al.
patent: 4565726 (1986-01-01), Oguchi et al.
patent: 4591528 (1986-05-01), Nishimatsu et al.
patent: 4720411 (1988-01-01), Shimozawa

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