Provided is a mobile communication system capable of obtaining a diversity effect even when a signal received by a relay station has an error in a corporate relay to which time space encoding is applied. The preliminary rotation operations of a photosensitive body and developing unit, as well as the image correcting operation followed by forming images using a test image, is prohibited. The control device also includes a pressure compensating device for adapting the first and second internal pressures to an external pressure that acts on the control device module from outside.