发明授权
- 专利标题: Electrostatic ink jet recording apparatus ejecting ink using different electric potentials applied to different electrodes
- 专利标题(中): 静电喷墨记录装置使用施加到不同电极的不同电位喷射墨
-
申请号: US766789申请日: 1996-12-13
-
公开(公告)号: US5877790A公开(公告)日: 1999-03-02
- 发明人: Yoshihiro Hagiwara , Ryosuke Uematsu , Junichi Suetsugu , Hitoshi Minemoto , Kazuo Shima
- 申请人: Yoshihiro Hagiwara , Ryosuke Uematsu , Junichi Suetsugu , Hitoshi Minemoto , Kazuo Shima
- 申请人地址: JPX Tokyo
- 专利权人: NEC Corporation
- 当前专利权人: NEC Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX7-325322 19951214
- 主分类号: B41J2/06
- IPC分类号: B41J2/06
摘要:
An electrostatic ink jet recording apparatus has a head body having an ink chamber in which ink charged to a specified polarity is stored, a plurality of ink ejection ports and a plurality of ejection electrodes. An ejection electrode drive circuit generates an ejection voltage to drive the plurality of ejection electrodes according to a time division method so that the ejection voltage is not simultaneously supplied to the adjacent ejection electrodes. A plurality of opposite electrodes are opposed to the plurality of ejection electrodes via recording paper. They are separated into first opposite electrodes corresponding to those ejection electrodes which are selectively being driven according to the time division method and second opposite electrodes corresponding to those ejection electrodes which are not being driven according to the time division method. An opposite potential setting circuit sets a first potential for the first opposite electrodes and a second potential for the second opposite electrodes. The first potential is set at such a value as to cause ink ejected from the ink ejection ports to be electrically attracted to the first opposite electrodes more strongly than to the second opposite electrodes.
公开/授权文献
- US5186333A Top cover clamp for screening machine 公开/授权日:1993-02-16
信息查询
IPC分类: