Patent ID: 8616546

Claim:
A sheet feeder comprising: a stacker that accommodates multiple sheets of recording media; an elevation unit disposed in a downstream portion of the stacker in a sheet feeding direction and which ascends to lift a leading edge portion of the sheet in the sheet feeding direction; a rotary feeding member disposed facing the elevation unit and forming a nip in which the leading edge portion of the sheet is clamped together with the elevation unit when the elevation unit ascends; and a guide unit having a leading edge in the sheet feeding direction and disposed adjacent to an outer circumference of the feeding member, facing an upper side of the sheet, the leading edge of the guide unit guiding the leading edge portion of the sheet toward a position where the nip between the feeding member and the elevation unit is to be formed, wherein the leading edge of the guide unit in the sheet feeding direction projects beyond a leading edge of the stacker downstream in the sheet feeding direction.