Abstract: A device which includes a camera arranged above a feed table to simultaneously scan a front edge and a lateral edge of a plate-shaped piece or sheet having a printed area adjacent the edges of the sheet characterized by transmitting an output of the camera to a signal processor and calculating unit to compare the output of the camera to a reference signal to create error signals which are used to operate motors for moving the lateral stops and front stops in accordance with the amount of error signals to correct misalignment of the sheet.

Abstract: A device for a pick-up unit for an infeed station of a processing machine which includes a carriage mounted in a main frame for shifting both laterally and vertically. The carriage is provided with a bar carrying several suction cups and is shifted laterally by a rack gear on the carriage being engaged by a pinion from a drive motor which rotates in response to the sensed lateral position of the sheet being lifted. The device is preferably used for centering sheets being picked up from a stack or pile of sheets within a feed station of a machine designed for converting or processing these sheets.