Inkjet head and method for manufacturing the same
AssigneeBrother Kogyo Kabushiki Kaisha
InventorManabu Hibi
Life of this patent
Estimating the term…
Abstract
An inkjet head includes a channel unit and actuator units. Inside the channel unit, individual ink channels are formed so that ink supplied from ink inlets is ejected from nozzles via pressure chambers. The actuator units are bonded to the upper surface of the channel unit. The actuator units have a configuration of four piezoelectric sheets laminated to one another. On the upper surface of the piezoelectric sheet, individual electrodes are disposed in positions opposed to the pressure chambers respectively. A FPC for supplying driving signals to the actuator units is connected to the individual electrodes.
Claims13
A method for manufacturing an inkjet head, comprising:
- producing a channel unit including a plurality of pressure chambers communicating with nozzles respectively and arrayed in a plane, and ink channels extending from ink inlets to the nozzles through the pressure chambers respectively, the pressure chambers having openings in one surface of the channel unit parallel to the plane;
- producing an actuator unit including individual electrodes having planar shapes not larger than planar regions of the pressure chambers respectively, a common electrode formed over the individual electrodes, and a piezoelectric sheet put between the common electrode and a plurality of the individual electrodes;
- bonding the actuator unit to the one surface of the channel unit while aligning the individual electrodes such that the individual electrodes are included in the planar regions of the pressure chambers respectively in plan view;
- increasing internal pressure in each of the pressure chambers;
- and
- pressing a flexible cable against the actuator unit with increased internal pressure in each of the pressure chambers so as to connect terminals of the flexible cable to the individual electrodes of the actuator unit respectively, the flexible cable serving to supply driving signals to the actuator unit.
A method for manufacturing an inkjet head comprising:
- preparing a main body including a plurality of pressure chambers arrayed in a plane, ink channels extended through the pressure chambers respectively, individual electrodes and a common electrode;
- increasing internal pressure of at least a part of the plurality of pressure chambers;
- connecting terminals of a flexible cable to the individual electrodes of the main body, the connecting step includes pressing the flexible cable against the main body under the condition that the internal pressure of the at least a part of the plurality of pressure chambers is increased by the increasing step.
Dependencies are inferred from the claim text.