Abstract: A controller stops a registration roller to temporarily hold a recording sheet and restarts the registration roller at a timing of transferring an image formed on an intermediate transferring belt to a predetermined position of the recording sheet. Then, an adjustment time calculator compares a time measured by a time counter with a predetermined reference time and calculates the difference between the measured time and the reference time as the adjustment time. The controller controls the driving of the sheet feeding mechanism based on the calculated adjustment time so that the waiting time of a next recording sheet becomes closer to the predetermined reference time.