An ink tank 25A includes an ink containing portion 120, an ink injection portion 113, an ink supply portion 117, and a pair of electrode pins 140a and 140b. The ink containing portion 120 has a visual check portion 114 that enables the position of the liquid surface of ink contained in the ink containing portion 120 to be visually checked from the outside in a reference posture, which is a posture at the time when the ink is supplied from the ink tank 25 to the print head portion 32. The ink supply portion 117 is connected to a lower portion 122A located below a lower end of the visual check portion 114 in the reference posture. Leading end portions 143a and 143b of the electrode pins 140a and 140b are arranged in the lower portion 122A.