Patent ID: 8208825
Filing Date: 2012-06-26
Classification: G03G

Abstract:
1. An electrostatographic printing machine comprising a toner supply chain incorporating at least a toner supply device, a metering roller and a development member and an image carrying member, an electrostatic charging device acting onto the development member to impress an electrostatic charge onto the development member and to induce a voltage thereon with respect to a machine electrical common earth potential, wherein said electrostatographic printing machine further comprises a toner supply roller; wherein the toner supply roller, the metering roller and the developer member are each electrically connected to the machine electrical common earth potential, each via respective voltage regulating or controlling means to regulate or control induced voltages on each of the toner supply roller, the metering roller and the developer member; and wherein each of the respective voltage regulating or control means comprises a resistor, a variable resistor, a zener type diode, or a programmable voltage regulation circuit.