Oce-technologies B.v.

Rene Johannes Van Der Meer

Aart Nijkamp

Catharinus Van Acquoij

David D L Wijngaards

Albert G M Van Welie

Stanislaw K J Lenczowski

Johannes G V Van Stiphout

An image-forming element for a printing apparatus which includes a support structure with a plurality of electrodes of a first type disposed thereon and an electronic control unit for energizing the electrodes. The image-forming element further includes a plurality of electrodes of a second type, each one of said electrodes of the second type being arranged for interacting capacitively through a dielectric layer with a number of electrodes of the first type, forming a group, the electronic control unit containing a first series of drivers for energizing the electrodes of the first type, each one of said drivers being suited for energizing one electrode of the first type within each group and a second series of drivers for energizing individually the electrodes of the second type, the first and second series of drivers being arranged such that the electrodes of the first type can be individually activated, image wise.

Image-forming element for a printing apparatus with a multiplex circuit for driving the image-forming electrodes

An image forming device includes an image forming element moving past an image forming station in which a toner is deposited on the surface of the image forming element, the image forming element having at least one electrode extending over a predetermined surface area of the image forming element. The image device also includes an impedance/capacitance measuring circuit measuring the amount of toner deposited on the predetermined surface area on the basis of a resulting change in the impedance/capacitance of the electrode.

Direct imaging process with feed back control by measuring the amount of toner deposited

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Venlo, Netherlands

Rene Johannes Van Der Meer