A laser beam printer 1 is connected to a host computer and receives job data 100 from the host computer. The job data 100 includes a transmission time information 103. If the laser beam printer 1 is provided with a clock IC 98, a CPU 91 of the laser beam printer 1 reads a current time from the clock IC 98 and set the current time as receiving time information. On the other hand, if the laser beam printer 1 is not provided with the clock IC 98, then the CPU 91 sets the transmission time information 103 included in the received job data 100 as the receiving time information.
