This is achieved in an arrangement of a network forming a network topology with network components connected via data lines of a computer with an operating system and holding software for detecting the network components and the network topology is stored. The technique includes displaying, at the computing device, a video chat window in response to initiating the video chat session, the video chat window displaying a video stream received from the other computing device. Thus, the contact state of the cleaning blade with respect to the surface of the intermediate transfer belt is kept constant, and thus cleaning of the intermediate transfer belt can be performed stably. The maximum rotating speed of the rotor may reach up to above 3000 rpm. The back portion may also tilt with respect to the seat portion so as to better conform to the occupant’s back. The method is applicable to both a conventional bulk semiconductor substrate and a silicon-on-insulator substrate.