There is described an image forming apparatus, which makes it possible to
prevent a final print product from getting its appearance worse due to
such a drawback that a reference mark still remains on the final print
product. The apparatus includes: a setting section to make the display
section display a setting screen for inputting setting information
therefrom, the setting information being in regard to a post-processing
use page including a reference mark to be used for post processing; an
image processing section to create image data representing a second image
of the post-processing use page, based on the setting information
inputted from the setting screen; and a print processing section to print
the first images of the pages included in the document and the second
image of the post-processing use page onto first paper sheets and a
second paper sheet being separate from the first paper sheets,
respectively.