Electrostatic color printing method

Details Electrostatic color printing method Electrostatic color printing method

1987-09-16

1988-08-30

Braun, Fred L.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

To produce color reproduction

118647, 346157, 355 4, 355 10, 430117, G03G 1301, G01D 1506

Patent

active

047676892

ABSTRACT:
An electrostatic color printer method using a single toning shoe for successively and sequentially applying color liquid developers to a color latent image overlay to a sheet disposed against a rotating drum. An electrostatic head scans the sheet in a helical pattern of abutting stripes and forms the latent image on the sheet. A toning shoe assembly follows the head and applies one of the color developers to the sheet. A drain selector foot, pivotable beneath the toning shoe, brings an appropriate developer recycling tube into communication with a drain in the toning shoe assembly for returning used developer to the correct supply tank. After scanning the sheet, the toning shoe is rinsed with a solvent at a cleaning station past the end of the drum. The toning shoe has a plurality of pressure responsive reed valves, each communicating with one of a plurality of channels in the shoe for selecting sequential color developers until the entire image is toned in repeated passes of the single toning shoe.

REFERENCES:
patent: 3196832 (1965-07-01), Zin
patent: 3656173 (1972-04-01), Fussel
patent: 3752119 (1973-08-01), Matkan
patent: 3910231 (1975-10-01), Inoue et al.
patent: 3916829 (1975-11-01), Yamada et al.
patent: 4627705 (1986-12-01), Landa et al.

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