Auxiliary charging device of electrophotography printing apparatus

摘要

A charging device of an electrophotography printing apparatus may improved the charging efficiency by preventing the potential difference generated at both ends of a photosensitive drum. An auxiliary charging device includes an auxiliary charging plate to which voltage is applied. The plate is installed to come into contact with both ends of the photosensitive drum in order to compensate for a potential level in a developing cartridge. The electrophotography printing apparatus may include a charging unit, a developing unit and a toner supplying unit provided around the photosensitive drum.