发明授权
- 专利标题： Liquid discharge head and liquid discharge apparatus using liquid discharge head
- 专利标题（中）： 液体排放头和液体排放装置使用液体排放头
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申请号： US12757478申请日： 2010-04-09
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公开(公告)号： US07950765B2公开(公告)日： 2011-05-31
- 发明人: Hiroshi Takabayashi , Hideo Kanno , Takatsuna Aoki , Seiichiro Karita
- 申请人： Hiroshi Takabayashi , Hideo Kanno , Takatsuna Aoki , Seiichiro Karita
- 申请人地址： JP Tokyo
- 专利权人： Canon Kabushiki Kaisha.
- 当前专利权人： Canon Kabushiki Kaisha.
- 当前专利权人地址： JP Tokyo
- 代理机构： Fitzpatrick, Cella, Harper & Scinto
- 优先权： JP2006-098674 20060331; JP2007-066591 20070315
- 主分类号： B41J2/14
- IPC分类号： B41J2/14
摘要：
A compact and highly reliable recording head enabling precise detection of temperature information for each nozzle and rapid as well as highly accurate detection of nozzles with a discharge defect can be achieved. An electrothermal transducing member is provided on a substrate to generate heat energy for discharging liquid from a discharge port. A temperature detecting circuit includes a temperature detecting element for measuring a temperature of the transducing member. The temperature detection circuit includes a constant current circuit, a voltage detecting circuit, and a switching element.
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