In an optical disc recorder, a time necessary for performing preparation processing prior to start of recording of signals on an optical disc after an instruction of start of recording is inputted is shortened. A search of power calibration area is started while the optical disc is revolved at a double speed of a normal revolution speed promptly when the optical disc is mounted on a revolution table. When the search of the power calibration area is completed, the optical disc recorder shifts to standby mode for waiting the instruction of start of recording. When the instruction of start of recording is inputted, a buffer starts to accumulate MPEG encodes signals generated by an MPEG encoder, and an optimum power control is carried out while revolving the optical disc at the normal revolution speed. When the optimum power control is completed, and the most suitable laser strength for the optical disc loaded on is found, the recording of the signals accumulated into the buffer onto the optical disc is started.