An LED based illumination module includes a thermal interface surface that is coupled to a thermal interface surface of a reflector using engaging members that generate a compressive force between the thermal interface surfaces. To satisfy a relationship of Rv>Rs, where Rv is resistance in the thickness direction of an intermediate transfer belt and Rs is resistance in the circumferential direction of the intermediate transfer belt over the distance between an image carrier located most upstream and an image carrier located most downstream in the movement direction of the intermediate transfer belt. The method also includes electroplating a conductive material in the wire opening. The length control mechanism functions to adjust the overall length of an implant that is held by the implant engagement assembly before being implanted in vivo. The method of this invention involves placing the x-ray film into the cover.