Patent ID: 6450627
Filing Date: 2002-09-17
Classification: A01K

Abstract:
An ink jet head comprising:at least one member made of carbon and having at least one ink passage and a piezoelectric plate affixed to a surface of the carbon member wherein the carbon member includes an array of closely spaced ink passages in a surface of the carbon member; and a corresponding array of internal ink passages communicating with the surface passages and wherein the carbon member is a pressure chamber member and the ink passages in the surface of the pressure chamber member comprise an array of closely spaced pressure chambers and the piezoelectric plate is affixed to the surface having the array of closely spaced pressure chambers; and wherein the array of pressure chambers is formed in a first surface of the pressure chamber member and including a second array of closely spaced pressure chambers formed in a second surface of the pressure chamber member which is parallel to the first surface and a second array of internal ink passages corresponding to and communicating with the second array of pressure chambers and a second piezoelectric plate affixed to the second surface of the pressure chamber member.