A scanner capable of being folded and unfolded, the scanner including a first unit having a first scanning unit which scans a document; a second unit which is rotatably disposed to the first unit, and having a second scanning unit which moves between a folded position in which the second scanning unit faces the first scanning unit, and an unfolded position in which the second scanning unit is unfolded from the folded position; and a moving unit which moves at least one of the first scanning unit and the second scanning unit in at least one of a focus adjusting direction and a transverse direction according to a transport direction of the document.