DROPLET INJECTION DEVICE AND MANUFACTURING METHOD OF DROPLET INJECTION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a droplet injection device which suppresses the increasing of size in a direction parallel to the plane direction of a channel formation body formed of a liquid channel containing a pressure chamber.SOLUTION: A thin film laminate 13 formed by laminating a plurality of layers is arranged on the upper surface of a channel forming substrate 12 formed of a plurality of pressure chambers 31 in which a scanning direction is set as the longitudinal direction. A part of the thin film laminate 13 is a piezoelectric element 19 superimposed on the pressure chambers. A resin layer 14 is arranged on the upper surface of the thin film laminate 13. The resin layer 14 is formed by curing a photosensitive resin. A squeezed channel 33 is formed on such a part as to be superimposed on an end part of the side opposite to a nozzle 30 in the longitudinal direction on the resin layer 14. The squeezed channel 33 is connected with the pressure chamber 31 via a connection channel 32 formed on the thin film laminate 13. A reservoir unit 15 which is constituted with members 41 to 43 and is formed of an ink storage chamber 37 therein is joined to the upper surface of the resin layer 14.