An imaging system is provided for imaging media of while supported at an imaging position on a support surfaces. The system includes a loading device configured to move the medium to be imaged along the support surface to the imaging position. During loading, the leading edge of the medium, which extends across the medium width and substantially perpendicular to a direction of movement of the medium, moves in a direction towards a registration device. A registration device is contacted by the leading edge of the medium during loading so as to position the medium in the imaging position on the support surface. A medium securing device secures the medium to the support surface and a perforation mechanism subsequently punches or notches the medium prior to imaging. A drive mechanism is provided to move the perforation mechanism and the registration device, typically prior to loading of the medium, to a position which corresponds to the particular width of the medium to be imaged.