Coating apparatus – With means to apply electrical and/or radiant energy to work... – With means to orient coating particles
Patent
1975-08-13
1977-01-18
Kaplan, Morris
Coating apparatus
With means to apply electrical and/or radiant energy to work...
With means to orient coating particles
3171575MR, 335284, 360134, B05C 1100
Patent
active
040033368
ABSTRACT:
A device for manufacturing magnetic recording media in which the magnetic particles in the recording layer are oriented in a preferred direction, the fluid coating applied to the base being subjected to the action of a magnetic field produced in the air gaps between the spaced apart poles of two magnetic circuits, one on each side of the coated face, arranged symmetrically with respect to the plane of the coated base, the edges of the poles adjacent to the coated base terminating in screening elements shaped in such a way that the distance between the surfaces of the screening elements facing the coated base and the coated base itself increases as the screening elements extend away from the edges of the poles. A high degree of magnetic anisotropy in the recording layer can also be obtained when the magnetic circuits are at a relatively large distance from the still fluid magnetic coating.
REFERENCES:
patent: 3021230 (1962-02-01), Deriaud
patent: 3162792 (1964-12-01), Hackley et al.
Deigner Paul
Falk Roland
Koester Eberhard
Schaefer Dieter
Uhl Karl
BASF - Aktiengesellschaft
Kaplan Morris
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