US Patent 7307648 Printing apparatus and method for passbooks

A passbook printing apparatus comprises a movable tension roller correcting slack of an intermediate transfer film resulting from a different in a feed speed between a film drive roller and a film wind-up reel, and a control device operating the film wind-up reel to apply a predetermined tension to the intermediate transfer material in a state of stopping the film drive roller, thereby moving and fixing the tension roller to a predetermined position, and thereafter, feeding the intermediate transfer film by a predetermined distance by the film drive roller to position it to the transfer position.