Patent ID: 8655199

Claim:
An image forming apparatus comprising: a reading unit configured to read an original document; an image forming unit configured to print a copy of the original document read by the reading unit; a discharge unit configured to discharge a sheet printed by the image forming unit to a first tray or a second tray; a determining unit configured to determine whether or not a page of the original document read by the reading unit includes an irregular part formed by a foreign substance; and a control unit configured, in a first case when the determining unit determines that the original document does not include any page with an irregular part, to control the image forming unit to print a copy of the original document and to control the discharge unit to discharge the copy to the first tray, and in a second case when the determining unit determines that a page of the original document includes the irregular part, to control the image forming unit to automatically print a copy of the original document and to print an additional copy of the page of the original document with the irregular part and to control the discharge unit to discharge the copy of the original document to the first tray and the additional copy of the page of the original document with the irregular part to the second tray.