Patent ID: 9186894
Filing Date: 2015-11-17
Classification: B41J,Y10T

Abstract:
1. A droplet discharge head, comprising: a substrate including a liquid chamber communicated with a nozzle to discharge droplets; an electromechanical transducer provided on the substrate to pressurize a liquid in the liquid chamber, the electromechanical transducer including a first drive electrode at a first side facing the substrate and a second drive electrode at a second side opposite to the first side; a first terminal electrode connected to the first drive electrode; a second terminal electrode connected to the second drive electrode; and a holding substrate covering the electromechanical transducer to be displaceable, wherein the holding substrate has a first opening to expose at least a part of the first terminal electrode and a second opening to expose at least a part of the second terminal electrode, and the first opening and the second opening are arranged in an area in which an amount of charges supplied by a discharge electrode becomes a threshold amount or more when, by corona discharge or glow discharge generated by the discharge electrode arranged to face a surface of the holding substrate having the first opening and the second opening, charges are supplied to the first terminal electrode and the second terminal electrode through the first opening and the second opening to generate an electric field between the first drive electrode and the second drive electrode to perform polarization processing on the electromechanical transducer.