Einfache Hochspannungsversorgung für einen elektrographischen Drucker mit mehreren Entwicklungseinheiten

摘要

In order to accomplish the present invention, there is provided a voltage supply system for use in a color electrophotographic printer where the electrophotographic printer has more than one developer. A high voltage AC source (101) receives a select signal that indicates which one of the developers is presently in use. Provided one and only one developer is in use, the alternating current source outputs (101) an AC voltage. A switching network (102) is connected to the HVAC current source and also each developers. The switching network (102) also receives the select signal and routes the AC voltage to the active developer. Stress to the switching elements in the switching network (102) is reduce by proper sequencing of the application and removal of the HVAC and network reconfigurations.