Inkjet recording apparatus

An inkjet recording apparatus comprising:

• a housing having an internal space, the housing having one end and an other end in a first horizontal direction, the housing has a discharge opening for discharging a sheet, the discharge opening being formed at the one end of the housing in the first horizontal direction;
• a recording head having an ejection port configured to eject ink;
• a case configured to accommodate an ink container storing ink to be supplied to the recording head;
• a first sensor configured to detect ink stored in the ink container;
• a maintenance unit configured to cause the recording head to discharge ink from the ejection port;
• a waste liquid container configured to store ink discharged by the maintenance unit;
• a second sensor configured to detect ink in the waste liquid container;
• and
• a base board including a board and a controller mounted on the board, the controller being configured to receive signals outputted from the first sensor and the second sensor,
• the recording head, the case, the first sensor, the maintenance unit, the waste liquid container, the second sensor, and the base board being arranged in the internal space of the housing,
• the base board having a flat surface extending in the first horizontal direction and in a second horizontal direction, a range occupied by the base board in a vertical direction overlapping each of a range occupied by the first sensor in the vertical direction and a range occupied by the second sensor in the vertical direction, the second horizontal direction being perpendicular to the first horizontal direction, the vertical direction being perpendicular to both the first horizontal direction and the second horizontal direction, and
• the case being aligned with the discharge opening in the second horizontal direction, the waste liquid container and the base board being located above the discharge opening in the vertical direction, the waste liquid container and the base board overlapping the discharge opening as viewed in the vertical direction.