发明授权
US06770211B2 Fabrication of liquid emission device with asymmetrical electrostatic mandrel
失效
具有不对称静电心轴的液体发射装置的制造
- 专利标题: Fabrication of liquid emission device with asymmetrical electrostatic mandrel
- 专利标题(中): 具有不对称静电心轴的液体发射装置的制造
-
申请号: US10232077申请日: 2002-08-30
-
公开(公告)号: US06770211B2公开(公告)日: 2004-08-03
- 发明人: Michael J. DeBar , Gilbert A. Hawkins , James M. Chwalek
- 申请人: Michael J. DeBar , Gilbert A. Hawkins , James M. Chwalek
- 主分类号: G01D1500
- IPC分类号: G01D1500
摘要:
A liquid emission device includes a chamber having a nozzle orifice. Separately addressable dual electrodes are positioned on opposite sides of a central electrode. The three electrodes are aligned with the nozzle orifice. A rigid electrically insulating coupler connects the two addressable electrodes. To eject a drop, an electrostatic charge is applied to the addressable electrode nearest to the nozzle orifice, which pulls that electrode away from the orifice, drawing liquid into the expanding chamber. The other addressable electrode moves in conjunction, storing potential energy in the system. Subsequently the addressable electrode nearest to the nozzle is de-energized and the other addressable electrode is energized, causing the other electrode to be pulled toward the central electrode in conjunction with the release of the stored elastic potential energy. This action pressurizes the liquid in the chamber behind the nozzle orifice, causing a drop to be ejected from the nozzle orifice.
公开/授权文献
信息查询