Medium processing apparatus, recording system, method of controlling medium processing apparatus

A medium processing apparatus, comprising:

• a processing portion configured to perform processing on a medium;
• a processing tray on which the medium subjected to the processing is placed;
• a feeding roller configured to feed the medium to the processing tray;
• and
• a discharge roller pair configured to discharge the medium from the processing tray, wherein
• the discharge roller pair includes
• a first roller that comes into contact with a first surface as a surface where the medium comes into contact with the processing tray;
• and
• a second roller that is a roller that comes into contact with a second surface opposite to the first surface of the medium, and that is switchable between a first state of being configured to nip, together with the first roller, the medium, and a second state of being farther from the first roller than in the first state, and
• a control portion that controls state switching of the second roller is configured to switch between
• a first mode in which the medium is fed to and placed on the processing tray by the feeding roller while the second roller is in the second state, the second roller is switched from the second state to the first state, and the medium placed on the processing tray is discharged by the discharge roller pair, and
• a second mode in which the medium is discharged by the feeding roller and the discharge roller pair without being placed on the processing tray while the first state of the second roller is maintained.

A method of controlling a medium processing apparatus including

• a feeding portion that transports a medium,
• a processing tray on which the medium transported by the feeding portion is placeable,
• a curvature imparting portion configured to impart a curvature along a width direction to the medium fed to the processing tray,
• wherein the curvature imparting portion includes a roller that comes into contact with a first surface of the medium,
• a processing portion configured to process the medium on the processing tray, and
• a discharging portion configured to discharge the medium placed on the processing tray, the method comprising a procedure for selecting one of a first mode or a second mode, wherein
• the first mode is a mode in which the medium transported by the feeding portion is placed on the processing tray and then discharged by the discharging portion, and
• the second mode is a mode in which the medium transported by the feeding portion is discharged by the discharging portion without being placed on the processing tray.