发明授权
- 专利标题: Ink jet recording apparatus
- 专利标题(中): 喷墨记录装置
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申请号: US496974申请日: 1995-06-30
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公开(公告)号: US5818472A公开(公告)日: 1998-10-06
- 发明人: Toshiki Usui , Takahiro Katakura , Tomoaki Abe
- 申请人: Toshiki Usui , Takahiro Katakura , Tomoaki Abe
- 申请人地址: JPX 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: JPX Tokyo
- 优先权: JPX6-173583 19940701; JPX7-077224 19950308; JPX7-156959 19950531
- 主分类号: B41J2/045
- IPC分类号: B41J2/045 ; B41J2/055 ; B41J29/38
摘要:
An ink jet recording apparatus provided with: an ink jet recording head having a pressurizing chamber communicated with a nozzle opening and a common ink chamber, and a piezoelectric vibrating plate which is formed at a surface of the pressurizing chamber and deflection-displaced, the head being caused to eject an ink drop by the deflection displacement of the piezoelectric vibrating plate; a charging circuit which supplies a current to the piezoelectric vibrating plate in response to a print signal, thereby producing the deflection displacement for ink ejection, and which outputs a signal for holding a charge final voltage during a fixed time period after an end of charge; and a discharging circuit which has a first discharge time constant suitable for sucking meniscus formed immediately after ink ejection toward the pressurizing chamber, thereby preventing the meniscus from being ejected from the nozzle opening, which stops discharge in a range which is (n+3/4) to (n+1) times (where n is 1, 2, 3, . . . , or 8) a natural vibration period T of the piezoelectric vibrating plate, and which conducts discharge at a second and different discharge time constant at an elapse of a predetermined time period.
公开/授权文献
- US5035453A Door-locking device 公开/授权日:1991-07-30
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