Recorders – Magnetographic
Patent
1977-02-25
1978-09-26
Lucas, Jay P.
Recorders
Magnetographic
118652, 358301, 427 48, G03G 1900, G01D 1512
Patent
active
041174984
ABSTRACT:
Magnetic printing process, and apparatus for carrying out same, comprising:
(a) forming a magnetic image on a ferromagnetic material which is imposed on an electrically conductive support;
(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 et al.
patent: 3893416 (1975-07-01), Eichorn
patent: 3965478 (1976-06-01), Schloemann
IBM Tech. Disc Bull, vol. 17, #3, p. 828, 8/74 "Magnetographic Copier", L. T. Romankier.
Edwards Donald William
Gorondy Emery John
E. I. Du Pont de Nemours and Company
Lucas Jay P.
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