Patent ID: 6802596
Filing Date: 2004-10-12
Classification: B41J

Abstract:
An ink jet head deforming a pair of partition walls sandwiching an ink chamber trench to discharge ink from said ink chamber by having an inside electrode formed in the ink chamber at each inner side plane of said pair of partition walls and electrically connected to an external drive circuit, and applying a driving pulse from said external drive circuit to said inside electrodes, comprising:a substrate having said partition walls constituted by forming said ink chamber trench from one end plane to another end plane; and a filling member formed between said pair of partition walls at said another end plane of said ink chamber trench, wherein an end plane of said inside electrode located only within said ink chamber trench is exposed at said another end plane, said external drive circuit is electrically connected to said inside electrode at said another end plane, and an ink supply opening to supply ink to said ink chamber trench is provided at said another end plane side, and wherein said ink chamber trench extends from said one end plane to said another plane and maintains a constant depth.