Sheet manufacturing apparatus and control method for sheet manufacturing apparatus

A sheet manufacturing apparatus comprising:

• a defibrating unit that defibrates a raw material including fibers in an atmosphere;
• an accumulating unit that includes a drum in which a plurality of openings are formed, and discharges defibrated matter defibrated by the defibrating unit by causing the defibrated matter to pass through the openings by rotating the drum;
• a web forming unit that includes a belt on which the defibrated matter passing through the openings is accumulated, and forms a web by operating the belt;
• a sheet forming unit that forms a sheet from the web formed by the web forming unit;
• a cutter unit that cuts the sheet formed by the sheet forming unit into a preset size;
• a cutting unit drive motor that drives the cutter unit;
• and
• a control unit that executes a stop control of the sheet manufacturing apparatus in a case where an instruction to stop the apparatus is provided,
• to execute the stop control, the control unit sensing that a stop trigger as an apparatus stop instruction is on, waiting until a drive timing at which the cutting unit performs a cut operation upon sensing that the stop trigger is on, driving the cutter unit drive motor at the drive timing such that the cutting unit performs the cut operation, and commencing the stop control at a timing of the cutting unit drive motor changing from on to off,
• wherein in the stop control, the control unit stops operation of the defibrating unit after stopping rotation of the drum and movement of the belt.