Abstract: An opening and closing mechanism for a cover is openable and closable with respect to a body. The mechanism includes a link structure supported at the body rotatably within a range of a first predetermined angle from a closed state of the cover, and supporting the cover rotatably within a range of a second predetermined angle. The link structure is rotated integrally with the cover when being rotated within the range of the first predetermined range. The cover is solely rotated within the range of the second predetermined angle when the link structure has been rotated by the first predetermined angle from the closed state of the cover.

Abstract: A feeder includes a guide section 141d for guiding a medium while partially abutting one side of the medium in feeding the medium. Accordingly, the frictional resistance occurring between one side of the medium and the guide section can be lessened, so that a feed failure such as paper break or a paper jam can be prevented from occurring. Therefore, paper of various sizes can be reliably fed.