Sheet Ejector and Sheet Feeder Having the Same

A sheet feeder comprising:

• a feed tray;
• a catch tray;
• and
• a sheet feeding unit configured to feed a sheet from the feed tray toward the catch tray along a conveyance path, the sheet feeding unit comprising:
• a pickup roller configured to feed the sheet placed on the feed tray onto the conveyance path;
• a separation unit configured to feed the sheet fed from the pickup roller, in a manner separated on a sheet-by-sheet basis;
• one or more feed rollers configured to convey the sheet fed from the separation unit, toward the catch tray along the conveyance path;
• an ejection roller unit comprising a first roller and a second roller, the ejection roller unit configured to eject, onto the catch tray, the sheet conveyed by the one or more feed rollers;
• and
• a pushing member configured to rotate concentrically with the first roller, the pushing member comprising a projection formed on a circumferential surface of the pushing member, the projection configured to contact a trailing end of the sheet to be ejected, and to push out the sheet in an ejecting direction;
• and
• a contact member comprising a contact portion disposed, in a view along a rotational-axis direction parallel to a rotational axis of the first roller, in one of:
• such a position as to overlap a most downstream position of a rotational trajectory of the pushing member in the ejecting direction;
• and
• a position downstream relative to the most downstream position of the rotational trajectory of the pushing member in the ejecting direction, the contact portion configured to extend up to a position closer to the second roller than the rotational axis of the first roller and contact the trailing end of the sheet ejected from the ejection roller unit.