摘要:
A printing head for an ink jet printer are provided with a plurality of ink jet sets each including: an ink nozzle (203) through which ink is ejected: a pressure chamber (202) communicated with the ink nozzle and having a diaphragm (3) made of a flexible plate: and a piezoelectric member bonded on an outside of the diaphragm for deforming the diaphragm to eject ink through the ink nozzle from the pressure chamber, the piezoelectric member including: a layer having titan: an upper PZT layer chemically bonded on an upper surface of the titan layer and polarized in a first direction: and a lower PZT layer chemically bonded on a lower surface of the titan layer and polarized in a second direction opposite to the first direction.
摘要:
A printing head (1) for an ink jet printer includes: a pressure chamber (202) for containing ink, the pressure chamber including a diaphragm (3,31,32) made of a flexible material having titan; an ink nozzle (203) communicated with the pressure chamber (202); and a piezoelectric member (4) including a PZT layer chemically bonded to an outside of the diaphragm (3,31,32) of the pressure chamber (202), the piezoelectric member being electrically activated to cause the diaphragm (3,31,32) to bend into the pressure chamber to eject ink from the ink nozzle (203).