Abstract: A document feeder includes a document loading unit loaded with a document thereon and supported to be movable between (i) a loading position where the document can be loaded and (ii) an opened position where a space at a lower side of the document loading unit in a direction of gravity is opened, a separation unit including a feed roller and a separation roller being in pressure contact with the feed roller, the separation unit that separates the document fed from the document loading unit by a nip between the feed roller and the separation roller, and a guide member that guides the document fed from the document loading unit to the nip of the separation unit. When the document loading unit moves to the opened position, the separation roller and the guide member move to be spaced apart from each other.