MASTER SHEET RETAINER FOR PRINTING MACHINES

摘要

A device for retaining the trailing end of a master sheet on a printing machine drum includes a retainer member movable between an open position for receiving the trailing end and a closed position for holding the trailing end of the master sheet. An actuating means, provided on an impression cylinder in printing relationship with the printing machine drum, acts against the trailing end of the master sheet which acts against the retainer member in such a way as to move the retainer member to the open position and the trailing end of the master sheet under the retainer member. Spring means is provided for restoring the retainer member to the closed position and for maintaining it closed and in holding engagement with the trailing end of the master sheet during a printing operation.