发明授权
- 专利标题: Ink jet printing apparatus
- 专利标题(中): 喷墨打印设备
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申请号: US160770申请日: 1980-06-18
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公开(公告)号: US4333086A公开(公告)日: 1982-06-01
- 发明人: Yutaka Ebi
- 申请人: Yutaka Ebi
- 申请人地址: JPX Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX54-82036 19790630
- 主分类号: B41J2/06
- IPC分类号: B41J2/06 ; G06K15/10 ; G01D15/18
摘要:
Ink is supplied into a discharge passageway (46) which tapers inwardly from the inlet (47) to the outlet (48) thereof with insufficient pressure to cause the ink to be ejected from the passageway (46). Inlet and outlet electrodes (49), (51) are provided at the inlet (47) and outlet (48) of the passageway (46) respectively. Another electrode (52) is provided external of the passageway (46). An electric potential is applied between the inlet and outlet electrodes (49), (51) to polarize the ink in the passageway (46). An opposite electric potential is applied to the external electrode (52) to cause the ink to be electrically attracted and discharged from the passageway (46) onto a sheet of paper (53) for printing. The external electrode (52) may be disposed either in front of or behind the sheet (53).
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