Patent ID: 8041247

Claim:
An image forming apparatus comprising: an image forming paper accommodating unit configured to accommodate papers having a single side or double sides on which an image is formed; a specific paper accommodating unit configured to accommodate specific papers; an image forming processing unit configured to perform an image forming operation based on single-side image page data or double-side image page data with respect to the papers fed from the image forming paper accommodating unit; a sheet discharge unit to which the papers and the specific papers are discharged; and a control unit configured to control all the units, wherein the control unit determines whether an image forming job assigned to the specific papers accommodated in the specific paper accommodating unit is a double-side image forming job, when determining that the image forming job assigned to the specific papers accommodated in the specific paper accommodating unit is the double-side image forming job, the control unit controls so that the specific papers are fed from the specific paper accommodating unit based on the image page data assigned to a front side of the double-side image forming job and are discharged to the sheet discharge unit, and the control unit further controls so that the image page data assigned to a rear side of the double-side image forming job are deleted.