Patent ID: 8876109

Claim:
A medium feeding device comprising: a medium feeding unit that feeds a medium in a first direction by contacting a first surface of said medium; a separating unit that contacts a second surface of said medium and presses said medium against said medium feeding unit to separate said medium from subsequent media; a conveying unit that conveys said medium having been separated by said separating unit, said conveying unit being disposed downstream of said medium feeding unit and said separating unit in said first direction; a first guide member provided between said medium feeding unit and said conveying unit, and configured to guide said first surface of said medium, and a second guide member provided so as to face said first guide member, and configured to guide said second surface of said medium, wherein said first guide member has a guide protruding portion that protrudes toward said second guide member without contacting said second guide member, said guide protruding portion comprised of a rib, said guide protruding portion being located on an extended line of a tangential line at a contact portion between said medium feeding unit and said separating unit, wherein a part of said guide protruding portion overlaps with said medium feeding unit as seen in a second direction perpendicular to said first direction.