A conveyor belt for feeding an image-scanned original present at an image scanning position to an intermediate position located between the image scanning position and a paper discharge tray is arranged, so that the next original is fed to the image scanning position before a copied original is discharged to the paper discharge tray. Since each scanned original is fed to the intermediate position, the next original can be fed when the original at the image scanning position reaches the intermediate position. Therefore, the feed operation of the next original need not wait until the original at the image scanning position is discharged to the paper discharge tray, and the original-replace processing time can be shortened.