CONTAMINANT REMOVAL FROM A CORONA-BASED CHARGING DEVICE

摘要

A wire corona device (50), such as a scorotron, for providing charging current to a charging surface (10) such as a photoconductive surface in a laser printer. The scorotron (50) comprises a charging wire (52) and containing walls (54) and a grid (54). Decontamination media is applied to internal surfaces of the walls (54) and/or the grid (54) for preventing accumulation of contaminants from the corona. Contaminants from the walls tend to leak during periods of inactivity to the photoconductive surface and can be the cause of loss of image quality in initial print runs after a period of inactivity.