An image forming apparatus having an image reading table includes a document glass installed on an upper side of the image reading table, to support a document; an image reading sensor installed under the document glass, to perform an image reading operation; a cover to selectively cover the document glass; an automatic document feeder (ADF) to feed a document along an image reading path, past the image reading sensor; a document discharging plate to support a document discharged from the ADF; a first guide member; a guide film attached to the first guide member; and an image forming part to form the image on a printable medium. The guide film includes a first guide film portion and a second guide film portion, the first guide film portion is in planar contact with the document glass and the second guide film portion guides the document toward the ADF.