Patent ID: 6270190
Filing Date: 2001-08-07
Classification: B41J

Abstract:
An ink-jet printer head, comprising:a substrate;a first electrode formed on the substrate, a region of said first electrode defining the bottom of an ink chamber;a bubble chamber barrier formed on said first electrode, a side of said bubble chamber barrier defining a lower portion of a wall of the ink chamber, said bubble chamber barrier for providing electrical insulation;a second electrode formed on said bubble chamber barrier, a side of said second electrode defining a middle portion of a wall of the ink chamber;an ink chamber barrier layer formed on said second electrode layer, a side of said ink chamber barrier layer defining an upper portion of a wall of the ink chamber; anda nozzle plate formed on said ink chamber barrier layer, said nozzle plate defining a top portion of the ink chamber and having an orifice for spraying ink from the ink chamber to the exterior of the printer head.