Image reading apparatus and image forming apparatus

An image reading apparatus comprising:

• a stacking unit having a stacking surface on which a document is to be stacked, and an abutment portion on which an end of the document in a widthwise direction of the document stacked on the stacking surface abuts;
• a feeding unit configured to feed the stacked document in a feeding direction perpendicularly intersecting the document widthwise direction;
• a conveyance unit including a plurality of conveyance rollers configured to convey the document fed by the feeding unit;
• a reading unit configured to read an image of the document conveyed by the conveyance unit;
• a rotating shaft extended in the feeding direction and configured to support the stacking unit to be rotatable with respect to the conveyance unit;
• and
• a drive unit configured to rotate the stacking unit around the rotating shaft,
• wherein, in the document widthwise direction, the rotating shaft is disposed at a position where at least a part of the rotating shaft exists in a center region that is a region among regions of the stacking unit trisected in the document widthwise direction and includes a center of gravity of the stacking unit.

An image forming apparatus comprising:

• a stacking unit having a stacking surface on which a document is to be stacked, and an abutment portion on which an end of the document in a widthwise direction of the document stacked on the stacking surface abuts;
• a feeding unit configured to feed the stacked document in a feeding direction perpendicularly intersecting the document widthwise direction;
• a conveyance unit including a plurality of conveyance rollers configured to convey the document fed by the feeding unit;
• a reading unit configured to read an image of the document conveyed by the conveyance unit;
• a rotating shaft extended in the feeding direction and configured to rotatably support the stacking unit;
• a drive unit configured to rotate the stacking unit around the rotating shaft;
• and
• an image forming unit configured to form an image on a recording material based on the image read by the reading unit,
• wherein, in the document widthwise direction, the rotating shaft is disposed at a position where at least a part of the rotating shaft exists between one end and other end in the document widthwise direction of a document having a maximum width conveyable by the conveyance unit in a state where the maximum width document abuts on the abutment portion.