and rotates with the supply spindle 202 the chopper wheel 230 includes a plurality of spaced teeth separated by gaps a sensing mechanism not shown is positioned to sense rotation of the chopper wheel 230 by sensing the alternating teeth and gaps when the chopper wheel 230 fails to rotate when rotation is expected the card processor knows that the end of the foil has been reached and has pulled away from the supply roll 204 referring now to fig9 and 10 the card processor 20 may include a laser engraving mechanism 50 for performing laser personalization on the card the laser engraving mechanism 50 may be located as an add on mechanism toward the rear 17 of the card processor 20 with portions of the mechanism 50 extending under the card processor as shown in fig1 with reference to fig9 the laser engraving mechanism 50 comprises a power supply 66 for powering the laser and a printed circuit assembly pca board 64 for controlling the laser and or portions or all of the processor 20 a laser head 62 generates a laser beam which is expanded by beam expander 60 the transmission of the laser beam is regulated by a beam shutter and solenoid 58 which is controlled by the pca board 64 proximate the beam shutter and solenoid 58 is a beam deflector 56 for deflecting the beam to create.