Inkjet printer

An inkjet printer, comprising:

• a base member;
• a supporting wall positioned higher than the base member and extending in a primary scanning direction;
• a placement platform configured to support a printing medium, in use, and being positioned lower than the supporting wall, the placement platform being configured to move in a secondary scanning direction perpendicular to the primary scanning direction, between a maximum upstream position and a maximum downstream position, the placement platform comprising an upstream end portion;
• a drive mechanism configured to move the placement platform in outbound and return directions between the maximum upstream position and the maximum downstream position of the secondary scanning direction, the outbound direction being from the upstream end toward the downstream end and the return direction being from the downstream end toward the upstream end;
• a guide rail disposed on the supporting wall and extending along the primary scanning direction;
• a carriage slidably mounted on the guide rail and configured to move along the primary scanning direction;
• an ink head supported on the carriage and configured to discharge ink toward a printing medium supported on the placement platform, in use;
• and
• a partitioning wall positioned entirely below the supporting wall and to a side of the placement platform in the primary scanning direction, the partitioning wall extending in the secondary scanning direction and in a vertical direction, the partitioning wall comprising a downstream end portion along the secondary scanning direction;
• wherein the partitioning wall is connected to the base member and supports the supporting wall;
• and wherein:
• when the placement platform is positioned at the maximum downstream position, the upstream end portion of the placement platform is positioned further downstream along the secondary scanning direction than the supporting wall, and further upstream along the secondary scanning direction than the downstream end portion of the partitioning wall.