INK JET PRINTER HEAD,申请号JP19970119546-传众专利搜索

INK JET PRINTER HEAD

申请公布号：JPH10305574(A)

申请号：JP19970119546

申请日期：1997.05.09

申请公布日期：1998.11.17

申请人：

KYOCERA CORP

发明人：SOROE KAZUNORI;KISHINO TOSHIKAZU;ITO KEISUKE;OKUBO SHIN

分类号：B41J2/045;B41J2/055;(IPC1-7):B41J2/045

主分类号：B41J2/045

摘要：PROBLEM TO BE SOLVED: To enhance the driving characteristics by making a diaphragm for applying a pressure to each ink chamber of a conductive inorganic material, bonding a piezoelectric element to the diaphragm and forming a driving electrode on the piezoelectric element. SOLUTION: A piezoelectric element 3 is bonded directly to the outside of a diaphragm 21 corresponding to each ink chamber 1 and a driving electrode 4 is formed thereon. Since the diaphragm 21 is made of a conductive inorganic material (volume resistivity: 1×10<-1>Ω.cm or below), it can also serve as a lower electrode. More specifically, when a constant voltage is applied to the diaphragm 21 and a diving voltage is applied to the driving electrode 4 on each piezoelectric element 3, the piezoelectric element 3 deforms to bend the diaphragm 21. Consequently, pressure in the ink chamber 1 increases to jet the ink through a jet port 6. Since the piezoelectric element 3 is bonded directly to the diaphragm 21, deformation of the piezoelectric element 3 can be transmitted well to the diaphragm 21 thus obtaining good driving characteristics.