Multicolor printer using magnetic and positive and negative elec

Details Multicolor printer using magnetic and positive and negative elec Multicolor printer using magnetic and positive and negative elec

1985-06-03

1986-07-29

Eickholt, E. H.

Typewriting machines

Annular typewriter

101171, 101426, 101DIG13, 3461531, 346157, 346 747, 430 35, 430 39, 430 42, B41J 302, G01D 1506

Patent

active

046028790

ABSTRACT:
A multicolor printer for providing a printout of record data in desired colors by using the three primary colors of cyan, yellow and magenta either singly or by subtractive color mixing for developing a magnetic latent image and/or at least one type of electrostatic latent image formed on a recording drum having a conductive material layer, a magnetizable material layer and an insulating material layer superposed one over another in the indicated order. A multiple magnetic head forms on the magnetizable material layer a magnetic latent image of the record data corresponding to a first primary color, and a multiple stylus forms on the insulating material layer a positively charged electrostatic latent image and/or a negatively charged electrostatic latent image corresponding to a second primary color and/or a third primary color. The magnetic latent image and/or the electrostatic latent image or images are developed in the desired colors by a plurality of developing devices into a developed image of the record data which is printed on a sheet of support material by a transfer-printing roll and the multicolored image printed on the sheet of support material is fixed by fixing roll to provide a printout of the record data in multicolor.

REFERENCES:
patent: 3392667 (1968-07-01), Cassel et al.
patent: 3662395 (1972-05-01), Doi et al.
patent: 3824601 (1974-07-01), Garland et al.
patent: 3987491 (1976-10-01), Nelson
patent: 4148043 (1979-04-01), Yamauchi et al.
patent: 4396927 (1983-08-01), Amaya et al.
patent: 4399749 (1983-08-01), Arai
patent: 4494865 (1985-01-01), Andrus et al.

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