INKJET HEAD AND INKJET PRINTER

摘要

According to one embodiment, an inkjet head includes: a pressure chamber which is filled with an ink; a plate having nozzles communicating with the pressure chamber; an actuator that causes ink drops to be discharged from the nozzles communicating with the pressure chamber by changing a volume in the pressure chamber; and a drive circuit that outputs a drive pulse signal including an expansion pulse which expands the volume of the pressure chamber and a shrinking pulse which shrinks the volume of the pressure chamber to the actuator such that the drive pulse signal is output, in which an electric field applied to the actuator during the time for not discharging the ink drops is lower than an electric field applied to the actuator during the time for discharging the ink drops.

主权项

1. An inkjet head comprising:
a pressure chamber which is filled with an ink; a plate having nozzles communicating with the pressure chamber; an actuator that causes ink drops to be discharged from the nozzles communicating with the pressure chamber by changing a volume in the pressure chamber; and a drive circuit that outputs a drive pulse signal including an expansion pulse which expands the volume of the pressure chamber and a shrinking pulse which shrinks the volume of the pressure chamber to the actuator such that the drive pulse signal is output, in which an electric field applied to the actuator during the time for not discharging the ink drops is lower than an electric field applied to the actuator during the time for discharging the ink drops.