Patent ID: 9050793
Filing Date: 2015-06-09
Classification: B41J

Abstract:
1. An inkjet printing device, comprising: a flow path plate including a nozzle to eject ink, a pressure chamber to supply pressurized ink to the nozzle, and a manifold to supply ink to the pressure chamber, a restrictor to connect the manifold and the pressure chamber, and a damper to connect the pressure chamber and the nozzle; a piezoelectric actuator to pressurize ink in the pressure chamber, the piezoelectric actuator having a lower electrode, a piezoelectric layer, and an upper electrode that are stacked sequentially on the flow path plate; a first electrostatic electrode disposed on the flow path plate; and a second electrostatic electrode disposed apart from the flow path plate to generate an electrostatic field in conjunction with the first electrostatic electrode, wherein the first electrostatic electrode is integrally formed with the lower electrode of the piezoelectric actuator such that the first electrostatic electrode can act as both an electrostatic electrode and piezoelectric electrode.