Fluid ejecting device with drop volume modulation capabilities
AssigneeIllinois Tool Works Inc.
InventorHongsheng Zhang
Life of this patent
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Abstract
An inkjet printhead has a piezoelectric module including a plate with an integrated ink chamber in flow communication with an integrated ink supply manifold and an integrated ink orifice. The ink chamber includes a main channel that connects the ink supply manifold to the ink orifice, and multiple piezoelectric actuators depending from the main channel and spaced apart by ink subchannels in flow communication with the main channel. The printhead also includes a ground electrode in contact with a first end of each of the actuators, and a cover plate bonded to the piezoelectric plate to seal the chamber and the manifold, the cover plate being in contact with a control electrode and configured to conduct control signals from the control electrode to the actuators.
Claims23
An inkjet printhead comprising:
- a piezoelectric module comprising a plate with an integrated ink chamber in flow communication with an integrated ink supply manifold and an integrated ink orifice, the ink chamber including a main channel that connects the ink supply manifold to the ink orifice, and multiple piezoelectric actuators depending from the main channel and spaced apart by ink subchannels in flow communication with the main channel;
- a ground electrode in contact with a first end of each of the actuators;
- and
- a cover plate bonded to the piezoelectric plate to seal the chamber and the manifold, the cover plate being in contact with a control electrode and configured to conduct control signals from the control electrode to the actuators.
A fluid ejecting device comprising:
- a piezoelectric module comprising a plate with an integrated fluid chamber in flow communication with a fluid supply and a fluid orifice, the fluid chamber including a main channel that connects the fluid supply to the fluid orifice, and multiple piezoelectric actuators depending from the main channel and spaced apart by fluid subchannels in flow communication with the main channel;
- a ground electrode in contact with a first end of each of the actuators;
- and
- a cover plate bonded to the piezoelectric plate to seal the chamber and the fluid supply, the cover plate being in contact with a control electrode and configured to conduct control signals from the control electrode to the actuators.
Dependencies are inferred from the claim text.