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    • 10. 发明授权
    • Method for detecting a liquid used for discharge, and a liquid discharging device
    • 检测用于排出的液体的方法和液体排出装置
    • US06554380B2
    • 2003-04-29
    • US08942943
    • 1997-10-02
    • Jiro MoriyamaYoshio Uchikata
    • Jiro MoriyamaYoshio Uchikata
    • B41J2175
    • B41J2/17566B41J2002/17579
    • A liquid detection method and a liquid discharging device to detect whether or not a liquid can be supplied in a state in which a liquid channel from a tank for accommodating the liquid to each discharging port of a recording head is not disconnected by a bubble. A detection-signal input terminal is provided at a position where it contacts the liquid. A detection terminal is provided at a position where it does not electrically contact the liquid and is isolated from the liquid within the tank via a lower wall of the tank, made of an insulating plastic material, and the air. An electrical signal is input from a recording apparatus to the detection-signal input terminal via a connection terminal. The input electrical signal is transmitted through the ink within the recording head, the liquid channel within a joint, and the liquid within the tank. The detection terminal, comprising a conductive metal plate provided at a position corresponding to the entire lower surface of the tank, detects the waveform of a voltage. By comparing the detected voltage with a predetermined threshold, it is determined whether or not the liquid can be normally supplied.
    • 一种液体检测方法和液体排出装置,用于检测在从用于容纳液体的容器的液体通道到记录头的每个排放口的液体通道未被气泡断开的状态下是否可以供应液体。 检测信号输入端子设置在与液体接触的位置。 检测端子设置在不与液体电接触的位置,并且经由罐的下壁与绝缘塑料材料制成的空气与罐体内的液体隔离。 电信号经由连接终端从记录装置输入到检测信号输入端。 输入电信号通过记录头内的油墨,接头内的液体通道和罐内的液体传输。 检测端子包括设置在与罐的整个下表面相对应的位置处的导电金属板,检测电压的波形。 通过将检测到的电压与预定阈值进行比较,确定是否可以正常供应液体。