Oce Printing Systems Gmbh

Pelikan Produktions Ag

Peter M&ouml;stl

Alfred Zollner

Joachim Heinzl

Markus Jeschonek

Wolfgang Schullerus

Joachim Kretschmer

Gerhard Beurer

An apparatus and method are provided for acquiring the nature of a toner particle layer in a printer or copier. An apparatus and a method are also provided for acquiring the moisture content of a carrier material in a printer or copier. A toner particle layer is transported forward between two capacitor plates arranged next to one another and a cooperating electrode. In a first switch status, the first and the second capacitor plate are charged with voltages opposite one another. In a second switch status, the first and the second capacitor plate are electrically connected to one another, whereby the remaining charge is identified and conclusions about the nature of the toner layer are drawn therefrom.

Apparatus and method for acquiring the nature of a toner particle layer and the moisture content of a carrier material in a printer or copier

The printhead has a multitude of adjacently arranged channels with piezo-electrical shear converters. The impulse form for activation of the converters&mdash;depending upon the number of simultaneously activated neighboring channels&mdash;is changed in such manner that the exit velocity of the ink droplets is constant. This makes it possible to obtain a better print image.

Method of controlling piezo elements in a printhead of a droplet generator

Growing community of inventors

Altdorf-Pfettrach, Germany

Peter Möstl

Growing community of inventors

Altdorf-Pfettrach, Germany

Peter M&ouml;stl

Peter Möstl