Patent ID: 8675225

Claim:
An image forming apparatus, comprising: an image reading portion for reading an image of an original to generate image data; a printing portion for printing the image and a sheet number on a medium as a print medium according to the image data; a missing page determining portion for determining whether the image reading portion fails to read a specific page of the original; and a discharge position control portion for discharging the medium to a first discharge position when the missing page determining portion determines that the image reading portion does not fail to read the specific page, wherein said discharge position control portion is configured to discharge a previous page of the specific page or a subsequent page of the specific page to a second discharge position different from the first discharge position so that the sheet number can be visibly confirmed when the missing page determining portion determines that the image reading portion fails to read the specific page, said discharge position control portion is configured to discharge the medium corresponding to the image data of a previous original and a subsequent original relative to the original that a missing page occurs to a specific discharge position shifted to a right side in a transportation direction when a page number of the original is located in an outer circumference edge of the original on the right side, and said discharge position control portion is configured to discharge the medium corresponding to the image data of the previous original and the subsequent original relative to the original that the missing page occurs to a specific discharge position shifted to a left side in the transportation direction when the page number of the original is located in the outer circumference edge of the original on the left side.