发明授权
- 专利标题： Liquid discharge head substrate, liquid discharge head and liquid discharge apparatus
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申请号： US15617276申请日： 2017-06-08
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公开(公告)号： US10538086B2公开(公告)日： 2020-01-21
- 发明人: Yasuo Fujii , Kazunari Fujii
- 申请人： CANON KABUSHIKI KAISHA
- 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： Venable LLP
- 优先权： JP2016-124799 20160623; JP2017-102959 20170524
- 主分类号： B41J2/14
- IPC分类号： B41J2/14 ; B41J2/05 ; B41J2/045
摘要：
A liquid discharge head substrate, comprising a discharging element configured to discharge a liquid, a driver configured to drive the discharging element, a conductive protection film covering the discharging element via an insulating film, and a controller connected to the protection film and configured to output a control signal that sets the driver in an inactive state when a change of a voltage of the protection film or a change in a current that flows to the protection film is detected.
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