Device for magnetically orienting the magnetizable particles or

Details Device for magnetically orienting the magnetizable particles or Device for magnetically orienting the magnetizable particles or

1981-03-11

1983-05-03

Shoop, William M.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

For magnetizing or demagnetizing

118640, H01F 720

Patent

active

043822444

ABSTRACT:
A device for magnetically orienting the magnetizable particles of magnetic recording media in a preferred direction, which media are obtained by applying a coating of anisotropically magnetic particles finely dispersed in a solution of an organic binder system and conventional additives to a non-magnetic base, and subsequently solidifying the coating, by the action, on the still fluid coating, of the magnetic fields produced by two E-shaped electromagnets arranged symmetrically with respect to, and in mirror-image relationship to, the plane of the said coating.

REFERENCES:
patent: 2711901 (1955-06-01), von Behren
patent: 3117065 (1964-01-01), Wooten
patent: 3162792 (1964-12-01), Hackley et al.
patent: 4043297 (1977-08-01), Hartmann et al.

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