Post-processing device and printing system

A post-processing device configured to perform post processing on a medium on which recording is performed by a liquid ejecting portion, the post-processing device comprising:

• an intermediate tray on which the medium transported in a transport direction is placed and aligned;
• a discharge port through which the medium post-processed on the intermediate tray is discharged;
• a discharge tray that is disposed in a gravity direction with respect to the discharge port and on which the medium discharged from the discharge port is placed;
• and
• an elevating mechanism configured to elevate the discharge tray, wherein
• the elevating mechanism is configured to move the discharge tray to a first normal position and a first standby position positioned in a direction opposite to the gravity direction with respect to the first normal position,
• the elevating mechanism is configured to move the discharge tray before the medium comes in contact with the discharge tray or a medium previously placed on the discharge tray, to the first normal position when a first medium which is hardly deformed is discharged to the discharge tray and to the first standby position when a second medium which is easier deformed than the first medium, and
• when the medium includes a third medium that is initially placed on the discharge tray and a fourth medium that is subsequently placed on the discharge tray and a frictional force that acts between the third medium and the fourth medium changes according to an amount of liquid ejected to the third medium, the elevating mechanism changes a height of the first standby position according to the amount of liquid ejected to the third medium at a spot where the third medium comes in contact with the fourth medium.

A post-processing device configured to perform post processing on a medium on which recording is performed by a liquid ejecting portion, the post-processing device comprising:

• an intermediate tray on which the medium transported in a transport direction is placed and aligned;
• a discharge port through which the medium post-processed on the intermediate tray is discharged;
• a discharge tray that is disposed in a gravity direction with respect to the discharge port and on which the medium discharged from the discharge port is placed;
• and
• an elevating mechanism configured to elevate the discharge tray, wherein
• the elevating mechanism is configured to move the discharge tray to a first normal position and a first standby position positioned in a direction opposite to the gravity direction with respect to the first normal position,
• the elevating mechanism is configured to move the discharge tray before the medium comes in contact with the discharge tray or a medium previously placed on the discharge tray, to the first normal position when a first medium which is hardly deformed is discharged to the discharge tray and to the first standby position when a second medium which is easier deformed than the first medium, and
• when a downstream end of the medium in the transport direction is disposed on an outside of the discharge port in a state in which the medium is placed on the intermediate tray, the elevating mechanism moves a position of the discharge tray in the opposite direction at a stage before the medium is placed on the intermediate tray.