Inkjet head and printer
AssigneeKYOCERA Corporation
InventorKeisuke MAKISE
Life of this patent
Estimating the term…
Abstract
The head has a passage member having a nozzle and a pressurizing chamber which is communicated with the nozzle and is positioned on the side opposite to the side where the nozzle is opened, a piezoelectric actuator substrate which is superimposed on the passage member so as to cover the pressurizing chamber, and a flexible printed circuit which faces the piezoelectric actuator substrate from the opposite side to the passage member. The piezoelectric actuator substrate has a piezoelectric body which is exposed on the flexible printed circuit side. The piezoelectric body has a via hole opened toward the flexible printed circuit and has a projection portion at the edge part of the via hole which projects to the flexible printed circuit side.
Claims20
An inkjet head comprising:
- a passage member having a nozzle comprising a nozzle opening on a first surface, and a pressurizing chamber which is communicated with the nozzle and is positioned on a second surface opposite to the first surface,
- a piezoelectric actuator substrate which is superimposed on the passage member so as to cover the pressurizing chamber, and
- a flexible printed circuit which faces the piezoelectric actuator substrate from a side opposite to the passage member, wherein
- the piezoelectric actuator substrate has an insulation layer which is exposed on a flexible printed circuit side, and
- the insulation layer has a via hole opened toward the flexible printed circuit and has a projection portion which projects above a surface of the piezoelectric actuator substrate towards the flexible printed circuit at an edge part of the via hole.
An inkjet head comprising:
- a passage member comprising a pressurizing chamber communicated with a nozzle;
- a flexible printed circuit;
- and
- a piezoelectric actuator substrate between the passage member and the flexible printed circuit, and superimposed on the passage member so as to cover the pressurizing chamber, the piezoelectric actuator substrate comprising:
- a piezoelectric body comprising a via hole facing the flexible printed circuit, the via hole having a projection portion on an edge of the via hole that projects above a surface of the piezoelectric actuator substrate that faces the flexible printed circuit.
Dependencies are inferred from the claim text.