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发明公开
CN109278408A 喷墨头及喷墨打印机 有权

喷墨头及喷墨打印机
摘要：
本申请提供喷墨头及喷墨打印机。所述喷墨头具备填充有油墨的压力室；构成压力室的至少一部分的致动器；将信号输入至致动器使致动器变形使压力室的容积变化的驱动IC；及与压力室连通且具备利用压力室的压力喷出压力室内的油墨的喷嘴的喷嘴板，驱动IC使压力室的容积从初始状态扩张至扩张状态，并在由压力室和油墨确定的固有振动周期期间，将压力室的容积维持在扩张状态，使压力室的容积从扩张状态收缩至初始状态，并在比固有振动周期长且比3倍的固有振动周期短的期间，将压力室的容积维持在初始状态，使压力室的容积从初始状态收缩至收缩状态，并在比固有振动周期长且比3倍的固有振动周期短的期间，将压力室的容积维持在收缩状态。
摘要（英）：

An ink jet head includes a pressure chamber, a nozzle plate including a nozzle, an actuator configured to cause an ink to be discharged from the pressure chamber via the nozzle, and a drive circuit configured to supply to the actuator an expansion signal, having a pulse width equal to a natural vibration cycle of the ink in the pressure chamber, that expands the pressure chamber to an expanded state from an initial state, a release signal, having a pulse width longer than the natural vibration cycle and shorter than three times the natural vibration cycle, that returns the pressure chamber tothe initial state from the expanded state, and a contraction signal, having a pulse width longer than the natural vibration cycle and shorter than three times the natural vibration cycle, that contracts the pressure chamber to a contracted state from the initial state.

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