发明授权
US07862135B2 Method of driving liquid ejecting head and liquid ejecting apparatus
有权
驱动液体喷射头和液体喷射装置的方法
- 专利标题: Method of driving liquid ejecting head and liquid ejecting apparatus
- 专利标题(中): 驱动液体喷射头和液体喷射装置的方法
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申请号: US11923441申请日: 2007-10-24
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公开(公告)号: US07862135B2公开(公告)日: 2011-01-04
- 发明人: Junhua Zhang
- 申请人: Junhua Zhang
- 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: JP2006-290153 20061025
- 主分类号: B41J29/38
- IPC分类号: B41J29/38
摘要:
A method of driving a liquid ejecting head is provided. The liquid ejecting head varies pressure of a liquid in a pressure-generating chamber as a result of operating a pressure-generating element by supplying an ejection pulse, to eject liquid drops from a nozzle opening due to the pressure variation. The method includes performing a first contraction and performing a second contraction. In the first contraction, the liquid drops are ejected from the nozzle opening as a result of contracting the pressure-generating chamber. In the second contraction, the pressure-generating chamber is contracted so as to reduce withdrawal towards the pressure-generating chamber, of a meniscus after the ejection of the liquid drops A time from a start of the first contraction to a start of the second contraction is between ¼ to ¾ of a Helmholtz vibration period Tc of the pressure-generating chamber. A time of the first contraction is less than or equal to a natural vibration period Ta of the pressure-generating element.
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