DEP apparatus for selectively creating monochrome highlight colo

Details DEP apparatus for selectively creating monochrome highlight colo DEP apparatus for selectively creating monochrome highlight colo

1990-07-02

1992-07-21

Miller, Jr., George H.

Recorders

Electric recording

Electrochemical

355327, 355328, G03G 1501

Patent

active

051327082

ABSTRACT:
A Direct Electrostatic Printer including a vacuum drum for transporting copy sheets past a plurality of DEP printhead structures for selectively printing various types of images. For example, black only images, highlight color images or process color images may be printed. To this end there are provided a plurality of printheads each utilizing a different color toner. Each printhead structure may be selectively actuated depending upon whether its color is to be used in forming the final image. Thus, where a process color image is to be formed, all of the printheads may be actuated and where black images are to be created only the black printhead is actuated.

REFERENCES:
patent: 3689935 (1972-09-01), Pressman et al.
patent: 4078929 (1978-03-01), Gundlach
patent: 4491855 (1985-01-01), Fujii et al.
patent: 4568955 (1986-02-01), Hasoya et al.
patent: 4810604 (1989-03-01), Schmidlin
patent: 4860035 (1989-08-01), Meuleman et al.
patent: 4914482 (1990-04-01), Ammenheuser et al.
patent: 4989020 (1991-01-01), Namba

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