The distal end part of an arm 5 is turnably and removably connected to the distal end part of a base part 5 through a connection mechanism 7. In a start-up control of motor, the following operation is performed: a current is passed through any coils in two phases, and the polarity of voltage induced in the non-conducting phase is detected. In the method, a pattern of a semiconductor diode is exposed on a wafer by illuminating exposure light to the multi-transmission phase mask through a modified illumination system comprising at least two poles, each having a preset opening angle. The signing key is embedded in an unbranded version of the application thereby branding the application. The inventive device is characterised in that, once the syringe has been filled, the injection needle disappears following injection by means of either a mechanical or chemical process, said needle being withdrawn and housed in the safety container at the selected pre-programmed moment.