A device and method for generating extremely short-wave ultraviolet electromagnetic wave, utilizing a theta pinch plasma generator to produce electromagnetic radiation in the range of 10 to 20 nm. Only when no error is detected within a predetermined period before and after receipt of data, by the receiving function of the communication control unit, from the control and image processing apparatus, a transmitting function of the communication control unit performs controls to transmit and write the data received and temporarily stored in the FIFO toin an external portion. The NMOS device provides a first bypass path and the first and second PMOS devices collectively provide a second bypass path.