Sheet conveyance apparatus and image forming apparatus

A sheet conveyance apparatus comprising:

• a sheet supporting portion configured to stack sheets;
• a feed roller configured to feed a sheet stacked on the sheet supporting portion;
• a first conveyance roller pair configured to nip and convey the sheet fed by the feed roller, and, while nipping the sheet, move the sheet in a lateral direction perpendicular to a sheet conveyance direction to correct a sheet position in the lateral direction;
• a second conveyance roller pair disposed upstream of the first conveyance roller pair and downstream of the feed roller in the sheet conveyance direction, and configured to nip and convey the sheet, and, while nipping the sheet, move the sheet in the lateral direction to correct the sheet position in the lateral direction;
• and
• a control unit configured to control the first conveyance roller pair and the second conveyance roller pair,
• wherein the control unit is configured to execute:
• a first mode for conveying a first sheet having a first length in the sheet conveyance direction, the first mode being configured to move the first sheet in the lateral direction, while nipping the first sheet via the first conveyance roller pair and not nipping the first sheet via the second conveyance roller pair, to correct a conveyance position in the lateral direction;
• and
• a second mode for conveying a second sheet having a second length longer than the first length in the sheet conveyance direction and a distance between the first conveyance roller pair and the second conveyance roller pair in the sheet conveyance direction, the second mode being configured to move the second sheet in the lateral direction, while nipping the second sheet via the first conveyance roller pair and the second conveyance roller pair, to correct the conveyance position in the lateral direction.