Patent ID: 6113227
Filing Date: 2000-09-05
Classification: B41J

Abstract:
An ink jet head formed by placing together at least two grooved-piezoelectric elements to form at least one channel therebetween, and an orifice plate bonded to the piezoelectric elements to close the at least one channel and to thereby define an ink pressure chamber, the ink jet head comprising:an electrode formed on a side of at least one of the piezoelectric elements so that the piezoelectric elements are in contact with each other with the electrode sandwiched therebetween;a non-electrode area formed as a portion of the inner walls of the ink pressure chamber between said electrode and the orifice plate so that said electrode is spaced from the orifice plate by said non-electrode area; andan insulating layer formed on the inner walls of the ink pressure chamber, adjacent said electrode and said non-electrode area, so that said electrode and non-electrode area are in contact with the insulating layer and are electrically insulated from ink in the ink pressure chamber.