Abstract: An image reader includes guide plates for defining an original convey path, a conveying mechanism for conveying an original along the original convey path, an optical reading section for illuminating the original fed by the conveying mechanism and for reading image information on the basis of reflection light from the original, and a mounting member for mounting the conveying mechanism and the optical reading section on the guide plate. In particular, the guide plate has a plurality of openings arranged in a direction of original conveyance, the conveying mechanism has a plurality of rollers protruding into the original convey path through the openings, for rotating to convey the original, and the mounting member has a plurality of supporting portions disposed beside the openings, for rotatably supporting the rollers.