Device for direct electrostatic printing with a conventional pri

Details Device for direct electrostatic printing with a conventional pri Device for direct electrostatic printing with a conventional pri

1998-10-20

2000-08-29

Barlow, John

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 206

Patent

active

061097314

ABSTRACT:
A direct electrostatic printing device includes a printhead structure with apertures and control electrodes associated with the apertures for delivering toner from a toner source to a substrate in accordance with image data. A first voltage source is provided to establish a flow of toner particles from the toner source to the substrate. A second voltage source is provided to establish a control voltage between the toner source and the control electrodes to control toner flow in accordance with the image data. The second voltage source provides a first AC field between a toner source and the control electrodes to permit toner flow and a second, diminished, AC field between the toner source and the control electrodes in order to stop the toner flow.

REFERENCES:
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patent: 5095322 (1992-03-01), Fletcher
patent: 5233392 (1993-08-01), Kitamura
patent: 5374949 (1994-12-01), Wada et al.
patent: 5526029 (1996-06-01), Larson et al.
patent: 5708464 (1998-01-01), Desie

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