Patent ID: 8720882

Claim:
A sheet feeding device comprising: a stacking unit configured to allow multiple sheets to be stacked thereon; a pair of side end regulating members configured to make contact with both side ends of the sheets stacked on the stacking unit so that positions of the side ends are regulated; a feeding unit configured to feed one sheet at a time from the stacked sheets; an air supply unit; and an air blow unit including a blow port from which air supplied from the air supply unit is blown against a side end of the stacked sheets, the air blow unit being housed in each of the side end regulating members, wherein each of the side end regulating members has an opening for exhausting the air that is blown from the blow port of the air blow unit to the stacked sheets, and an orientation of the blow port of the air blow unit is adjustable about an axial line perpendicular to a plane corresponding to a surface of the stacked sheets, wherein: the side end regulating member includes a member forming an air flow channel for guiding the air supplied from the air supply unit to the air blow unit, the air blow unit is attachable to the member forming the air flow channel so that the orientation of the air blow port is changed about the axial line, and one of the air blow unit and the member forming the air flow channel has a plurality of concave portions that are arranged about the axial line, and the other one of the air blow unit and the member has a convex portion that selectively engages with one of the concave portions.