Image reading apparatus and image forming apparatus including image reading apparatus

An image forming apparatus comprising:

• a first stacking unit including a sheet stacking surface on which a document is to be stacked, and an abutment portion on which one end portion of the document stacked on the sheet stacking surface in a width direction of the document abuts;
• a feeding unit configured to feed the document stacked on the first stacking unit in a feed direction orthogonal to the width direction;
• a reading unit configured to read an image of the document conveyed by the feeding unit;
• a second stacking unit onto which the document whose image is read by the reading unit is to be discharged;
• a rotating shaft that extends in the feed direction and configured to support the first stacking unit so as to be rotationally movable;
• a plurality of protrusions that extends in a direction at a predetermined angle with respect to the feed direction, is arranged on the sheet stacking surface, and protrudes from the sheet stacking surface;
• and
• an image formation unit configured to form an image on a recording material based on image information read by the reading unit.