BELICHTUNGSSTEUEREINRICHTUNG FUER EIN ELEKTROPHOTOGRAPHISCHES KOPIERGERAET

摘要

An exposure controlling apparatus for electrophotographic copying machines comprises an operating member which is operable externally of the machine to control the amount of exposure. The operating member is normally biased to return to its neutral position, but can be temporarily held in its operative position when operated. The temporary retention is released upon completion of a copying operation, allowing the operating member to return to its neutral position.