An internal drum printing plate plotter is disclosed. The plotter provides a smooth path for a printing plate from an input location to a plotting location to an output location. The plotter includes a partially cylindrical drum and a loading tray associated with the drum at one end thereof. The drum...http://www.google.fr/patents/US5488906?utm_source=gb-gplus-shareBrevet US5488906 - Internal drum printing plate plotter