Sheet conveyance apparatus and image forming system

A sheet conveyance apparatus comprising:

• a first conveyance path through which a sheet is conveyed toward a first discharge member;
• a detector provided on the first conveyance path and configured to detect a position of the sheet in a width direction perpendicular to a discharge direction toward the first discharge member;
• a second conveyance path which is branched from the first conveyance path and through which the sheet reversed from the discharge direction in the first conveyance path is conveyed in a case where the sheet is to be discharged to a second discharge member other than the first discharge member;
• a discharger provided downstream in the discharge direction of a position where the second conveyance path branches from the first conveyance path, the discharger being movable in the width direction and being configured to perform a discharge operation of discharging the sheet onto the first discharge member and a reversing operation of reversing and conveying the sheet to the second conveyance path;
• a conveyor provided on the second conveyance path and capable of nipping and conveying the sheet in a forward conveyance direction and a backward conveyance direction in the second conveyance path, the discharger and the conveyor being configured to perform a buffering operation of buffering a plurality of sheets, which are conveyed one by one through the first conveyance path, by overlaying the plurality of sheets on one another;
• and
• a controller configured to control the discharger and to execute an alignment control when the buffering operation is performed, the alignment control being a control in which the discharger moves and adjusts a position in the width direction of a preceding sheet having arrived at the discharger in the width direction in accordance to a position detected by the detector on a succeeding sheet conveyed toward the discharger following the preceding sheet.