Abstract: An antijamming device for a printed ticket vending machine having an exit opening for exiting of a printed ticket and a control for controlling feeding of unprinted tickets to a printing mechanism for printing tickets, having a pathway through which printed tickets pass from the printing mechanism to the exit opening, and a sensor in the pathway for sensing when an occlusion occurs at the exit opening to prevent bunching of the printed tickets at the exit opening and stopping feeding of printed tickets to the exit opening.