Air filtration for xerographic corona devices

摘要

A copying apparatus which includes a filtering system defining an inlet and an outlet to the corotron cavity. Both the inlet and the outlet include filter material for filtering the air before it is delivered to the corotron cavity and filtering effluents generated during actuation of scorotron wires. The pathways to the inlet and the scorotron cavity are sealed to ensure little or no leakage of contaminated air which could be exposed to the scorotron wires. For this purpose two activated charcoal filters are doped with silver on a foam substrate, utilized both for the inlet and the outlet filters.