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    • 8. 发明申请
    • FLUID EJECTION DEVICE COMBINING DRIVE BUBBLE DETECT AND THERMAL RESPONSE
    • 流体喷射装置结合驱动泡检测和热响应
    • WO2018080539A1
    • 2018-05-03
    • PCT/US2016/059702
    • 2016-10-31
    • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    • ANDERSON, Daryl, E.MARTIN, EricGARDNER, James, Michael
    • B41J2/04B41J2/07
    • A fluid ejection device with a fluid chamber including a vaporization chamber and a thermal drive bubble formation mechanism to vaporize a portion of a fluid in the vaporization chamber to form a drive bubble in response to a firing signal during a firing operation. A drive bubble detect sensor separate from the thermal drive bubble formation mechanism and in contact with fluid in the vaporization chamber, the drive bubble detect sensor to inject a fixed current through the vaporization chamber to generate a first voltage signal representing a voltage response of the vaporization chamber and indicative of drive bubble formation during the firing operation. A thermal sensor to generate a second voltage signal indicative of a thermal response of the vaporization chamber during the firing operation, the first and second voltage signals combined being representative of an operating condition of the fluid chamber.
    • 具有流体腔室的流体喷射装置,所述流体腔室包括蒸发腔室和热驱动气泡形成机构以蒸发所述蒸发腔室中的流体的一部分以响应于期间的点火信号而形成驱动气泡 发射操作。 驱动气泡检测传感器与热驱动气泡形成机构分离并且与汽化腔室中的流体接触,驱动气泡检测传感器通过汽化腔室注入固定电流以产生表示汽化的电压响应的第一电压信号 并且指示在发射操作期间驱动气泡形成。 一个热传感器,用于在点火操作期间产生表示蒸发室的热响应的第二电压信号,第一和第二电压信号组合表示流体室的工作状态。