AUTOMATIC SCANNING DEVICE

摘要

An automatic scanning device has two conveyor belts and a light grating with a horizontal light beam as control member. Such devices have the disadvantage that when one of the beams is interrupted, further articles may be laid on the belt without any possibility of registering it. To avoid this disadvantage, each light beam is individually evaluated and in addition light gratings with beams radiating in the vertical and horizontal directions are used.