Printing device

A printing device comprising:

• a support portion configured to move in a first direction and configured to support a printing medium;
• a head configured to eject ink onto the printing medium supported by the support portion;
• an ejector device configured to eject a treatment liquid to a region including at least both ends of the support portion in a second direction intersecting the first direction, the treatment liquid for forming an underlay of the ink or an overlay of the ink on the printing medium supported by the support portion;
• a bottom plate located below the support portion, both ends of the bottom plate being located outside the both ends of the support portion in the second direction;
• and
• a pair of partition plates extending in the first direction, the pair of partition plates being disposed between the both ends of the bottom plate in the second direction and between the bottom plate and the support portion in an up-down direction,
• wherein inner surfaces of the pair of partition plates are located between the both ends of the support portion in the second direction.