Charge-erasing device for electrophotographic copying apparatus

摘要

A charge-erasing unit for an electrophotographic reproducing machine utilizing a single, continuously illuminated light source during the reproduction cycle for erasing the charges in selected intermediate and marginal areas of a moving photosensitive member. Selection of the erasure areas is controlled by use of at least one narrow shutter movable into various positions in accordance with the size of the image reproduced, the shutter being completely withdrawn during passage of the intermediate area under the light source.