System for adjusting output of charging units for image prodn. - includes unit for charging light responsive or photo-conductor drum and discharge lamp which clears charge produced on drum

摘要

A unit (30) is provided for the designation or the selection of the output power setting of the charging unit (12). A unit (21) detects a signal, if the output setting of the charging unit is designated or elected by the designation or selection unit, which flows from the image reception element (11). A unit (23) is provided for adjusting the output power of the charging unit, until the output value reaches a predetermined value. Two drive units (19,27) are provided respectively for driving the image reception element in a given direction and for moving the developing unit (13) in one direction from the image reception element (11).