| 摘要 |
PROBLEM TO BE SOLVED: To provide an ink jet head capable of being easily disassembled and having an inner surface of a nozzle which can be easily washed. SOLUTION: In ink jet head, a first nozzle plate having a plurality of nozzle holes for delivering an ink; an ink chamber groove provided with a suction mechanism for sucking the ink and a jet mechanism for jetting a liquid drop; a second nozzle plate opened with an ink flow passage groove for feeding the ink to the ink chamber groove; a diaphragm plate for varying the volume of the ink chamber groove; a base member placed with the diaphragm plate and provided with a piezoelectric element insertion hole with a piezoelectric element inserted therein; and a piezoelectric element member including the piezoelectric element inserted to the piezoelectric element insertion hole are successively superposed. The nozzle hole is a through hole perpendicular to the first nozzle plate surface and the ink chamber groove is a through hole perpendicular to the second nozzle plate surface. Further, the ink flow passage groove is a groove opened to a contact surface side with the diaphragm plate of the second nozzle plate while communicating with the ink chamber groove. COPYRIGHT: (C)2006,JPO&NCIPI
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