LIQUID DISCHARGE HEAD AND PRINTER COMPRISING LIQUID DISCHARGE HEAD

To provide a liquid discharge head for slightly vibrating a piezo electric element, for heating ink in an individual channel, preventing thickening of ink in the vicinity of a nozzle, and preventing local change of a dispersion state of an ink component in the individual channel.SOLUTION: A liquid discharge head comprises: a channel board on which a nozzle and a channel communicated with the nozzle are formed; a drive element arranged on the channel board; and a drive signal generation circuit for generating a drive signal for driving the drive element. The drive signal includes a non-discharge drive signal for driving the drive element so that, liquid in the channel is not discharged from the nozzle, and the non-discharge drive signal includes: at least one first slight vibration waveform P1; and at least one second slight vibration waveform P2. The first slight vibration waveform is a waveform for displacing the drive element by a first displacement amount, and the second slight vibration waveform is a waveform for displacing the drive element by a second displacement amount being greater than the first displacement amount, the second slight vibration waveform is subsequent to the first slight vibration waveform.SELECTED DRAWING: Figure 9 【課題】圧電素子を微振動させることにより、個別流路内のインクを加熱するとともに、ノズル付近のインクの増粘を防止し、且つ、個別流路内でインク成分の分散状態が局所的に変化することを防止できる液体吐出ヘッドを提供する。【解決手段】液体吐出ヘッドは、ノズル及びノズルに連通する流路が形成された流路基板と、流路基板に配置された駆動素子と、駆動素子を駆動させる駆動信号を生成する駆動信号生成回路とを備える。駆動信号は、流路内の液体がノズルから吐出されないように駆動素子を駆動させる非吐出駆動信号を含み、非吐出駆動信号は、少なくとも１つの第１微振動波形Ｐ１と少なくとも１つの第２微振動波形Ｐ２とを含む。第１微振動波形は、駆動素子を第１変位量だけ変位させる波形であり、第２微振動波形は、駆動素子を第１変位量よりも大きい第２変位量だけ変位させる波形であり、前記第２微振動波形は前記第１微振動波形の後に連続する。【選択図】図９