Abstract: In an apparatus for correctly registering mounting of a printing plate wherein the printing plate is mounted on a plate cylinder of a sheet fed press, the plate cylinder having a plate cylinder gap with a front plate clamping device, and a rear plate clamping and tensions device, and the front plate clamping device has registering punches, the registering punches being connected to means for securing and sensing the correct registration in a lateral and in a circumferential position in correspondence with registering punches in the printing plate, the improvement comprising the registering elements of front plate clamping device each having inserts insulated from the registering elements which contact the printing plate.

Abstract: The invention relates to an apparatus for correctly registering mounting of a printing plate. Task of the invention is to provide an apparatus to control the correctly registered position of a printing plate, which can be realized with simple means and can withstand abrupt load changes of the printing plate. The task is solved according the invention by inserts allocated to registering elements, which are contacting the printing plate electrically isolated from the registering elements and are connected to a control unit.