Magnetic printing process and apparatus

Details Magnetic printing process and apparatus Magnetic printing process and apparatus

1977-02-25

1978-07-04

Lucas, Jay P.

Recorders

Magnetographic

118652, G03G 1900, G01D 1512

Patent

active

040991865

ABSTRACT:
Magnetic printing process, and apparatus for carrying out same, comrpising:
A. forming a magnetic image on a ferromagnetic material which is imposed on an electrically conductive support and subjecting the ferromagnetic material to the action of a charge dissipating means;
B. developing the magnetic image by decorating same with a ferromagnetic toner comprising a ferromagnetic component, a dye and/or chemical treating agent and a water-soluble or water-solubilizable, preferably thermoplastic, resin which substantially encapsulates the ferromagnetic component and the dye and/or treating agent;
C. transferring the developed image to a substrate;
D. permanently fixing the dye and/or chemical treating agent of the image on the substrate; and
E. removing the ferromagnetic component and the resin from the image on the substrate.

REFERENCES:
patent: 2971916 (1961-02-01), Schleicher
patent: 3627682 (1971-12-01), Hall, Jr.
patent: 3882507 (1975-05-01), Trimble
patent: 3893416 (1975-07-01), Eichorn
patent: 3965478 (1976-06-01), Schloemann
IBM "Technical Disc. Bull.," vol. 17, No. 3, 8/74, p. 828, Magnetographic Copier . . ., L. T. Romankiw.

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