Patent ID: 8905398

Claim:
A medium feeding device comprising: a medium feeding unit that feeds a medium placed in a set position; a friction separation member that is disposed downstream of the medium feeding unit and is configured to come into contact with an underside of the medium, the friction separation member being deformable, the friction separation member including an end portion that is not supported by a support member that supports the friction separation member, the end portion extending out from an edge of the support member that is a most downstream edge, the friction separation member having a first separation unit facing a first downstream driven roller; and a plurality of feed path restriction members that are arranged such that the feed path restriction members are disposed on each side of the medium feeding unit and are disposed on each side of the friction separation member, a contact portion of the feed path restriction members which comes into contact with a topside of the medium being located at a position lower than an upper surface of the friction separation member, wherein a tangent line between the first separation unit and the first downstream driven roller has a first point Q 1 being at a location where the tangent line is tangent to the first separation unit and where the medium contacts the first separation unit and a second point Q 2 being at a location where the tangent line is tangent to the first downstream driven roller, the end portion of the friction separation member that is not supported extending above the tangent line by a predetermined amount, wherein when the end portion of the friction separation member that is not supported is pulled downward due to a force exerted from downstream in a feed path, an upper surface of the end portion that is not supported does not go below the tangent line.