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    LIQUID EJECTION DEVICE
    2.
    发明公开
    LIQUID EJECTION DEVICE 审中-公开

    公开(公告)号：EP4393714A1

    公开(公告)日：2024-07-03

    申请号：EP23218397.0

    申请日：2023-12-20

    申请人： CANON KABUSHIKI KAISHA

    发明人： ISHIDA, Yuzuru ,  IWAHASHI, Shinya ,  MISUMI, Yoshinori ,  ISHIDA, Koichi

    IPC分类号： B41J2/14

    CPC分类号： B41J2/14129 ,  B41J2/14072 ,  B41J2202/1220130101

    摘要： A liquid ejection device(3) has an element substrate (10) having an ejection port (13); and a voltage application unit (900) applying a voltage to the element substrate, wherein the element substrate has a first layer (12) having the ejection port and a first channel (23) communicating with the ejection port and a second layer (11) fixed to a back face of the first layer and having a second channel (17a) communicating with the first channel, a heat element (126) for ejecting the liquid, a first electrode (133) covering a surface of the heat element on a side of the first layer and exposed to the first channel, and a second electrode (129) exposed to the first channel at a position different from the first electrode and not overlapping the heat element on a plan view, and the voltage application unit is configured to apply the voltage so that the first electrode is at a negative potential.

    METHOD FOR DRIVING LIQUID DISCHARGE HEAD, LIQUID DISCHARGE HEAD, AND LIQUID DISCHARGE APPARATUS
    3.
    发明公开
    METHOD FOR DRIVING LIQUID DISCHARGE HEAD, LIQUID DISCHARGE HEAD, AND LIQUID DISCHARGE APPARATUS 有权
    一种用于控制液体喷射头，液体喷射头和液体分配器

    公开(公告)号：EP2648918A1

    公开(公告)日：2013-10-16

    申请号：EP11846134.2

    申请日：2011-11-18

    申请人： Canon Kabushiki Kaisha

    发明人： SAKURAI, Makoto ,  KOMURO, Hirokazu ,  SAITO, Ichiro ,  ISHIDA, Yuzuru ,  YASUDA, Takeru

    IPC分类号： B41J2/05

    CPC分类号： B41J2/05 ,  B41J2/0455 ,  B41J2/0458 ,  B41J2/14129 ,  B41J2002/14387

    摘要： A liquid discharge apparatus includes: a liquid discharge head which includes; a discharge port to discharge a liquid; and a substrate including: an energy generating element for generating thermal energy to discharge the liquid from the liquid discharge port; a pair of electrodes connected to the energy generating element for driving thereof; an insulating layer of an insulating material provided to cover the energy generating element; and a metal layer of a metal material provided corresponding to the energy generating element to cover the insulating layer; and a driver unit which sets a first potential of one of the pair of electrodes substantially equal to the potential of the liquid and a second potential of the other one of the pair of electrodes lower than the first potential to drive the energy generating element.