Patent ID: 6332668
Filing Date: 2001-12-25
Classification: B41J

Abstract:
An apparatus for ejecting ink of an ink-jet printer, the apparatus comprising:a substrate;a first electrically insulating layer disposed upon said substrate;a first electrode layer disposed upon said first insulating layer, said first electrode layer containing at least one electrode;a second electrically insulating layer built upon said first electrode layer;a second electrode layer built upon said second electrically insulating layer, said second electrode layer containing at least one electrode opposing one of said electrodes from said first electrode layer; anda third insulating layer built upon said second electrode layer, said third insulating layer and said second electrode layer being perforated by a first orifice, said second electrically insulating layer being perforated by a second orifice, wherein oxygen bubbles are formed on said first electrode layer by an electrolysis of said ink when 0.1 amps or less current is applied to said first and said second electrode layers and wherein the potential difference between said first and said second electrode layers is 10 volts to 15 volts DC and wherein said current and voltage applied to said electrode layers are impulses of 2 microseconds to 4 microseconds in duration.