Abstract: An image forming apparatus comprises: an image reading section for reading a plurality of document images of a document having a plurality of sheets page by page, the document being set on a reading position in a state that image directions of the document images are mixed; a designating section for designating each image direction of the document images of the document set on the reading position; a storing section for storing the document images read by the image reading section; an image forming section for recognizing each rotation angle for directing the stored document images to a reference direction which is previously set, in accordance with each designated image direction, and for forming a plurality of output images by rotating the document images by each recognized rotation angle; and an output section for outputting the formed output images.