Agfa Gevaert Nv

Danny Van Gemert

Guido Vital Desie

Jacques Victor Leonard

Hilbrand Leopold Van Den Wijngaert

Raf Peymen

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.

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Hulshout, Belgium

Danny Van Gemert