Handling apparatus, handling unit, and printing system

A handling apparatus for handling a medium having a tubular shape and loaded on a platen, the platen extending in a first direction and a second direction crossing the first direction, the medium having a first layer located on an upper surface of the platen and a second layer located in an under-platen space defined under the platen in a case where the medium is loaded on a platen, the handling apparatus comprising:

• a first moving part configured to move in the second direction between a first proximate position at which the first moving part is proximate to a first edge of the platen extending in the first direction, and a first separated position at which the first moving part is separated farther from the first edge than at the first proximate position;
• a first contacting part fixed to the first moving part, the first contacting part being located in the under-platen space in a case where the first moving part is located at the first proximate position;
• and
• a controller, wherein
• the controller is configured to execute a first pushing process of pushing a first extending area of the medium into the under-platen space, the first extending area being located between the first layer and the second layer of the medium and extending in the second direction outward beyond the first edge of the platen, and
• in the first pushing process, the controller executes:
• causing the first moving part to move in the second direction from the first separated position to the first proximate position, after the medium has been loaded on the platen;
• and
• bringing the first contacting part into contact with the first extending area.