An electrostatic inkjet head providing high pressure to ink in order to enable high quality printing. The electrostatic actuator providing the pressure to the membrane (200) compressing the ink in a chamber (50) with an opening (20) is characterized by an overlapping area of the actuation electrode (300) and the moveable electrode (500) not determined by the area of the membrane (200) covering the chamber (50) with the ink. The maximum pressure that can be applied can be adapted by means of the ratio of the overlapping area (220) of the two electrodes and the area (210) of the membrane (200) covering the chamber (50) with the ink. Use of said head to eject a liquid drug used in an injection system.
申请公布号
EP2024182(B1)
申请公布日期
2014.09.03
申请号
EP20070735820
申请日期
2007.05.09
申请人
KONINKLIJKE PHILIPS N.V.
发明人
VAN LIEROP, HENDRIKUS W. L. A. M.;NELLISSEN, ANTONIUS JOHANNES MARIA;SOEMERS, HERMAN;GOLLATZ, JOHANNES ANTONIUS THEODORUS;REINTEN, HANS