Patent ID: 6726312
Filing Date: 2004-04-27
Classification: B41J

Abstract:
An ink jet head comprising:a body having an oscillator plate with an outer surface and an inner surface, wherein the inner surface is parallel to the outer surface; an ink pressuring chamber formed in the body between the inner surface and an opposed lower wall, wherein the lower wall is angled relative to the inner surface; an ink feed chamber formed in the body; an ink feed passage formed in the body communicating between the ink feed chamber and the ink pressuring chamber, the ink feed passage having an ink feed orifice opening into the ink pressuring chamber; and an ink discharge passage formed through the lower wall of the body communicating with a discharge orifice, the ink discharge passage having an inlet at the ink pressuring chamber and terminating at the discharge orifice, wherein the ink discharge passage is continuously narrowed from the ink pressuring chamber to the discharge orifice.