VISIONNEUSE-TIREUSE POUR MICROFILMS

摘要

In a viewer-printer, a chain is provided which is driven by the motor's sprocket wheel. The chain drives other sprocket wheels in the viewer printer to effectuate feeding and delivery of the copy paper. Along a portion of the chain, normally a single chain, is a dual link chain constituting two such chains integrally mounted together. The additional portion drives rollers which feed paper about to be copied. Cams are provided along the chain to throw switches. The placement of the switches along the chain control the machines timing. A lug on the chain engages the mirror to move it from a viewing position to an exposing position and returning to the viewing position.