An image forming apparatus prints a print job stored in a memory by a paper supply/feed setup associated with a paper setting of the print job. The apparatus includes a confirmation means for confirming whether or not print jobs with an identical paper setting exist in the print jobs every time when a predetermined condition is satisfied, a changing means for changing, when the print jobs with the identical paper setting exist, a print order of the print jobs stored in the memory so that the print jobs with the identical paper setting are to be printed continuously, and a continuous printing means for printing the print jobs with the identical paper setting continuously by a single paper supply/feed setup without making a temporary wait. According to the apparatus, the print jobs can be printed continuously and efficiently with no temporary wait, and thereby printing productivity can be improved.