An array inkjet printhead includes a substrate including an ink chamber to store ink to be ejected, a heater to apply heat to the ink, a TFT (thin film transistor) to control a voltage supplied to the heater, and a manifold to supply ink to the ink chamber, the ink chamber, the heater, and the TFT being formed in a top surface of the substrate, a nozzle plate formed on the substrate and including a plurality of nozzles through which the ink is ejected when the heater applies heat to the ink, and a driving unit to drive the TFT to make the heater generate the heat to eject the ink.