Spark Discharge and Discharge Mode in Electrophotography

Abstract

Spark discharge is used effectively in charging process and transfer process of electrophotography. For example, photoreceptor surface is uniformly charged by spark discharge between the charging roller and the photoreceptor. If the spark discharge is not uniform, the image becomes non-uniform or pattern by creeping discharge appears in the image. Therefore, non-uniform discharge should be avoided in the electrophotography process. In this paper, general information about discharge is introduced first and then spark discharge is explained in detail. As for spark discharge, difference between uniform discharge and non-uniform discharge and the feature of non-uniform discharge is discussed.