Copying machine with return track for document - has track length adjustment mechanism with infinite belt along guide rollers

摘要

The copying machine has a mechanism for transporting a sheet along the exposure station. It is capable of conveying sheets of any lengths repeatedly across an exposure window, restricting the loss of time to a minimum. There is a return track from the output to the input of the exposure station. . The return path consists of a single track, whose length can be adjusted via a control mechanism. The return path (60) is formed by part of an infinite belt (31), which travel over one guide roller parallel to the exposure window (5) near the discharge. It also travels over a second guide roller parallel to the exposure window near the input of the exposure station (50).