An inkjet printhead includes a nozzle plate having a nozzle, a substrate having an ink feed hole, and an intermediate layer interposed between the nozzle plate and the substrate, wherein the intermediate layer includes an ink chamber connected to the ink feed hole and the nozzle and a heating element surrounding the ink chamber. In the present invention, the nozzle, the ink chamber, and the ink feed hole are formed in a straight channel, thereby providing a high density printhead.