发明授权
- 专利标题: Inkjet recording device, ejecting device provided therein, and method of calibrating ejection characteristic for droplet
- 专利标题(中): 喷墨记录装置,其中提供的喷射装置和校准液滴的喷射特性的方法
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申请号: US11610152申请日: 2006-12-13
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公开(公告)号: US07651203B2公开(公告)日: 2010-01-26
- 发明人: Takahiro Yamada , Hitoshi Kida , Satoru Tobita , Kenichi Kugai
- 申请人: Takahiro Yamada , Hitoshi Kida , Satoru Tobita , Kenichi Kugai
- 申请人地址: JP Tokyo
- 专利权人: Ricoh Printing Systems, Ltd.
- 当前专利权人: Ricoh Printing Systems, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Whitham Curtis Christofferson & Cook, PC
- 优先权: JPP2005-359767 20051214
- 主分类号: B41J2/045
- IPC分类号: B41J2/045
摘要:
A droplet ejecting device includes a nozzle unit, a piezoelectric member and a drive voltage generating unit. The piezoelectric member has a common electrode and a discrete electrode. A first differentiation by polarization voltage of a characteristic curve indicating change in a polarization of the piezoelectric member with respect to change in the polarization voltage has a plurality of extremal values including a first extremal value at a prescribed positive voltage Vbp that is the smallest polarization voltage among plus polarization voltages corresponding to the plurality of extremal values, and a second extremal value at a prescribed negative voltage Vbn that is the largest polarization voltage among minus polarization voltages corresponding to the plurality of extremal values. The drive voltage generating unit generates a drive voltage having a range between a first negative voltage Ve1 and a first positive voltage Ve2, and applies the drive voltage between the common electrode and the discrete electrode. Vbp, Vbn, Ve1, and Ve2 are set such that Vbn
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