Head Unit And Liquid Ejection Apparatus

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Head Unit And Liquid Ejection Apparatus

This abstract first appeared for US patent application 18925206 titled 'Head Unit And Liquid Ejection Apparatus

Original Abstract Submitted

A head unit includes a first ejection unit which includes a first piezoelectric element driven by a first drive signal, and is configured to eject a liquid due to drive of the first piezoelectric element, a flexible wiring board electrically coupled to the first ejection unit, and a drive signal output circuit to which a first DC voltage signal having a first voltage value, a second DC voltage signal having a second voltage value, and an ejection control signal are input, and which is configured to output the first drive signal, wherein the drive signal output circuit is provided to the flexible wiring board, and is configured to output the first drive signal with the first DC voltage signal selected or deselected and with the second DC voltage signal selected or deselected based on the ejection control signal.