Method of contact-charging the surface of a photosensitive material.

摘要

Disclosud is a charging method by bringing an endless electrically conducting flexible sheet containing a brush roller into physical contact with the surface of a photosensitive material and applying a voltage to said electrically conducting flexible sheet, wherein said electrically conducting flexible sheet comprises a first resistance layer positioned on the side of the brush roller and a second resistance layer positioned on the outer surface, the second resistance layer having an electric resistance greater than that of the first resistance layer. The method makes it possible to uniformly and stably charge the surface of the photosensitive material without deteriorating the life of the photosensitive material and without permitting the output of the power source to drop even when defects such as pinholes exist in the surface of the photosensitive material. <IMAGE>