Sheet aligning device, sheet processing device, and image forming apparatus

摘要

A conveying unit receives a sheet from an upstream unit and conveys the sheet on a conveying path. A stacking unit stacks the sheet conveyed from the conveying unit. An aligning unit sets the sheet back in a direction opposite to a sheet conveying direction and aligns the sheet by bumping the sheet against a reference wall. A sheet discharging unit discharges the sheet aligned on the stacking unit. When a predetermined condition is satisfied, a control unit sets a timing for discharging the sheet by the sheet discharging unit earlier than a normal sheet discharge timing.