Patent ID: 6619779
Filing Date: 2003-09-16
Classification: B41J

Abstract:
An ink-jet printer head comprising:a single base plate having ink channels penetrating therethrough, through which ink is supplied, and the ink channels comprising, an ink manifold which is hollowed from a lower portion of the base plate to have a predetermined area, and an ink supplying path which is hollowed from the base plate to have a narrower area than that of the ink manifold, and which connects the ink manifold with the ink chamber; a hollow heat driving section formed on the base plate and encircling an exit of the ink channels, the hollow heat driving section comprising, an oxide film, a resistance heating element stacked on the oxide film, an electrode layer etched in a predetermined pattern in order for a top surface of the resistance heating element to be exposed and stacked on the resistance heating element, and a protective layer covering the resistance heating element and the electrode layer, wherein the oxide film, the resistance heating element, the electrode layer, and the protective layer are sequentially stacked on the base plate; an ink chamber barrier stacked on the base plate for serving as a side wall of an ink chamber where the ink is reserved; and a nozzle plate stacked on the ink chamber barrier and having a nozzle which is disposed coaxially with the ink channels and the ink chamber, the nozzle for ejecting out the ink in the ink chamber, wherein one of the ink manifold and the ink supplying path is shaped into the hollow cylinder while the other one of the ink manifold and the ink supplying path is shaped into the hollow rectangle.