An electrophotographic image forming apparatus has defined therein a longitudinal or process direction, and includes plural photoconductive drums, each having an image forming surface. One particular application involves a motorcycle conversion assembly in which at least one of the rear wheels of the conversion assembly is driven in the reverse direction so as to back-up the motorcycle. Each of the at least two proximal lead elements includes a plurality of terminals and a plurality of conductive wires coupled to the plurality of terminals and extending along a longitudinal axis of the proximal lead element. Even if metal ions enter the semiconductor substrate together with the hydrogen ions in the step of hydrogen ion irradiation, the effect of metal contamination can be suppressed by the gettering process. The communications device can have individual visibility of a plurality of destination addresses when data is received or transmitted by the wireless medium interface circuit. The apparatus also includes a pad-temperature regulator configured to contact the polishing surface to regulate the temperature of the polishing surface, and a temperature controller configured to control the temperature of the polishing surface by controlling the pad-temperature regulator based on information on the temperature of the polishing surface detected by the pad-temperature detector.