GRIPPERS MALFUNCTION MONITORING

摘要

A system for printing an image on a printing media, comprising: a) an impression roller (102); b) a gripper (106) which receives the printing media when said gripper is open, closes to hold the printing media to the impression roller while the image is printed, and opens to release the printing media from the impression roller; and c) at least one sensor (120, 122) which senses whether the gripper is open or closed.