Transport device and liquid ejecting device

A liquid ejecting device comprising:

• an ejecting unit configured to eject a liquid onto a medium,
• a roller unit having a plurality of rollers around which the medium supplied from a holding unit holding the medium is wound,
• a transport unit configured to transport the medium passing through the roller unit in a positive medium transport direction, and
• a support portion movably supporting the roller unit relative to the transport unit, the support portion configured to move the roller unit from a first position where recording occurs on the medium to a second position in a negative medium transport direction, wherein
• the roller unit includes a retaining portion,
• the plurality of rollers are provided along a transport direction in which the transport unit transports the medium, and
• the retaining portion is configured to retain the medium wound on a roller positioned most downstream in the transport direction among the plurality of rollers.