发明授权
US07178893B2 Head controller, inkjet recording apparatus, and image recording apparatus that prevent degradation in image quality due to environmental temperature changes
有权
头部控制器，喷墨记录装置和图像记录装置，其防止由于环境温度变化引起的图像质量的劣化
- 专利标题： Head controller, inkjet recording apparatus, and image recording apparatus that prevent degradation in image quality due to environmental temperature changes
- 专利标题（中）： 头部控制器，喷墨记录装置和图像记录装置，其防止由于环境温度变化引起的图像质量的劣化
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申请号： US10519876申请日： 2003-06-24
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公开(公告)号： US07178893B2公开(公告)日： 2007-02-20
- 发明人: Hiroshi Noda
- 申请人： Hiroshi Noda
- 申请人地址： JP 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： JP Tokyo
- 代理机构： Cooper & Dunham LLP
- 优先权： JP2002-206377 20020716
- 国际申请： PCT/JP03/07992 WO 20030624
- 国际公布： WO2004/007205 WO 20040122
- 主分类号： B41J29/38
- IPC分类号： B41J29/38 ; B41J2/45
摘要：
A head controller controls pressure creating means for contracting and expanding the volume of a pressurizing compartment communicating with a nozzle of a droplet discharging head. Drive waveform generating means outputs a drive pulse including a first waveform element expanding the compartment, a second waveform element maintaining the expanded state of the compartment, and a third waveform element contracting the compartment so that droplets are discharged. When a first potential difference is a potential difference between the first waveform element at the beginning of the expansion and the second waveform element, and the second potential difference is a potential difference between the third waveform element at the end of the contraction and the second waveform element, the difference between the first and second potential differences is decreased when environmental temperature is higher than a first predetermined temperature, and increased when the temperature is lower than a second predetermined temperature.