Patent attributes
An image reading apparatus includes: a first feed path; a second feed path; a detection unit; a feed system; an image read unit; a feed path switching unit; a drive source; a drive force transmission unit; a control unit that has a first feed mode that feeds a document from the first feed path to a document discharge portion and a second feed mode that feeds a document from the first feed path to the second feed path, and shifts a current feed mode from the second feed mode to the first feed mode; and an image modification unit that modifies the image read by the image read unit based on drive loss information acquired with regard to a drive loss of the drive force transmission unit occurring at the time of switching of the feed mode by the control unit.