发明授权
- 专利标题: Liquid ejecting head
- 专利标题(中): 液体喷头
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申请号: US11842788申请日: 2007-08-21
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公开(公告)号: US07775641B2公开(公告)日: 2010-08-17
- 发明人: Noriaki Okazawa , Takeshi Fujishiro
- 申请人: Noriaki Okazawa , Takeshi Fujishiro
- 申请人地址: JP Tokyo
- 专利权人: Seiko Epson Corporation
- 当前专利权人: Seiko Epson Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Workman Nydegger
- 优先权: JP2006-223795 20060821
- 主分类号: B41J2/17
- IPC分类号: B41J2/17
摘要:
There is provided a liquid ejecting head which can introduce a liquid in a liquid storage member to a pressure chamber side via a liquid flow path from a liquid introducing needle and which can eject a liquid in the pressure chamber from a nozzle opening as a liquid drop by operation of a pressure generator. The liquid introducing needle constructed in a hollow needle shape includes an introducing needle portion in which a liquid introducing through hole for introducing a liquid in the liquid storage member is opened, and a cylindrical enlarged diameter straight portion formed at the downstream side of the introducing needle portion and whose inner diameter is enlarged than the inner diameter of the introducing needle portion. The inner space of the enlarged diameter straight portion is to be a bubble chamber which can store a bubble and the enlarged diameter straight portion includes a groove portion extending from the upstream side toward the down stream side on the inner circumference surface.
公开/授权文献
- US20080043059A1 LIQUID EJECTING HEAD 公开/授权日:2008-02-21
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