| 摘要 |
A sheet finishing apparatus includes an inlet roller to receive a sheet conveyed from an image forming apparatus, a sheet introduction unit to guide the sheet received by the inlet roller to a finishing unit, a sheet ejection unit to guide the sheet subjected to the finishing by the finishing unit to an ejection port and to eject from the ejection port, a storage tray to receive the ejected sheet, a drive unit including plural motors to drive respective devices, and a control unit to control operations of the plural motors. In a trial operation of the sheet finishing apparatus, the control unit controls the plural motors, and shifts the timings and performs driving to prevent plural motors with sound pressure levels not less than a previously set reference level from being simultaneously operated.
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