Self-cleaning electrostatic color printer

Details Self-cleaning electrostatic color printer Self-cleaning electrostatic color printer

1986-05-09

1987-11-17

Pianalto, Bernard D.

Coating apparatus

With means to apply electrical and/or radiant energy to work...

Electrostatic and/or electromagnetic attraction or...

118630, 118645, 118647, 118652, 118660, 118662, B05B 500

Patent

active

047066059

ABSTRACT:
An electrostatic color picture having 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: 4102306 (1978-07-01), Ohta
patent: 4157219 (1979-06-01), Ohta et al.
patent: 4398817 (1983-08-01), Nishimura et al.
patent: 4449475 (1984-05-01), Schinke
patent: 4482242 (1984-11-01), Moraw et al.
patent: 4627705 (1986-12-01), Landa et al.

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