Magnetic recording device

Details Magnetic recording device Magnetic recording device

1990-09-18

1991-12-24

Miller, Jr., George H.

Recorders

Magnetographic

101489, G11B 900

Patent

active

050757008

ABSTRACT:
In a method and device for providing a visible image on a magnetic layer, the layer having a magnetic image thereon, the magentic layer is moved at a distance spaced from the top surface of a body of a magnetic fluid. The distance is sufficiently small that magnetic fluid from said body can be attracted to contact portions of said magnetic layer having a magnetic image thereon, by magnetic attraction, while the fluid is not attracted to portions of the layer that do not have a magnetic image.

REFERENCES:
patent: 4427987 (1984-01-01), Kikuchi
patent: 4458252 (1984-07-01), Kikuchi et al.
patent: 4489332 (1984-12-01), Ohta
patent: 5018445 (1991-05-01), Six

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