ENTWICKLUNGSEINRICHTUNG FUER EIN ELEKTROSTATISCHES BILD

摘要

IMPROVED DEVELOPING APPARATUS If developer within a xerographic developing apparatus becomes excessively charged, excessive toner is added to the apparatus because the excessively charged developer prevents a sensor from sensing the actual toner density within the apparatus. To overcome this problem, an element (contacted by the developer during movement of the latter within the apparatus) is connected to ground through a surge voltage protector. This prevents both the element and the developer from being excessively charged.