Inkjet printhead
AssigneeEnjet Co. Ltd.
InventorsDo Young Byun, Byungjik Lim, Shaheer Mohiuddin Khalil, Baek Hoon Seong, Jaewoo Joung, Jaeyong Choi
Life of this patent
Estimating the term…
Abstract
Disclosed is an inkjet printhead. The inkjet printhead with a plurality of nozzles to eject a liquid solution by an electrohydrodynamic method includes: a first electrode formed for each of the plurality of nozzles and applied with a voltage for ejecting the liquid solution by the electrohydrodynamic method; a first voltage controller configured to apply the voltage to the first electrode; and a second electrode placed between and spaced apart from the first electrodes formed in the nozzles and grounded to inhibit electric field interference between the nozzles.
Claims9
An inkjet printhead with a plurality of nozzles to eject a liquid solution by an electrohydrodynamic method, the inkjet printhead comprising:
- a first electrode formed for each of the plurality of nozzles, and applied with a voltage for ejecting the liquid solution by the electrohydrodynamic method;
- a first voltage controller configured to apply the voltage to the first electrode;
- a second electrode placed between and spaced apart from the first electrodes formed in the nozzles and grounded to inhibit electric field interference between the nozzles;
- and
- a nozzle layer formed with a plurality of nozzle chambers to store ink supplied for each nozzle and a nozzle hole on a bottom of the nozzle chamber to eject a liquid solution,
- wherein each second electrode is individually formed between adjacent first electrodes, and
- wherein a groove is recessed downwards on a top surface of the nozzle layer, and the second electrode is formed inside the groove.
An inkjet printhead with a plurality of nozzles to eject a liquid solution by an electrohydrodynamic method, the inkjet printhead comprising:
- a first electrode formed for each of the plurality of nozzles, and applied with a voltage for ejecting the liquid solution by the electrohydrodynamic method;
- a first voltage controller configured to apply the voltage to the first electrode;
- a second electrode placed between and spaced apart from the first electrodes formed in the nozzles and grounded to inhibit electric field interference between the nozzles;
- and
- a nozzle layer formed with a plurality of nozzle chambers to store ink supplied for each nozzle and a nozzle hole on a bottom of the nozzle chamber to eject a liquid solution,
- wherein each second electrode is individually formed between adjacent first electrodes,
- wherein the first electrode is formed on an inner surface of the nozzle chamber, and the second electrode is formed on a bottom surface of the nozzle layer, and
- wherein a bottom of the nozzle layer protrudes to form a protruding portion for each nozzle, a nozzle hole is formed at a bottom of the protruding portion, and the second electrode is formed on a recessed portion between the protruding portions.
An inkjet printhead with a plurality of nozzles to eject a liquid solution by an electrohydrodynamic method, the inkjet printhead comprising:
- a first electrode formed for each of the plurality of nozzles, and applied with a voltage for ejecting the liquid solution by the electrohydrodynamic method;
- a first voltage controller configured to apply the voltage to the first electrode;
- a second electrode placed between and spaced apart from the first electrodes formed in the nozzles and grounded to inhibit electric field interference between the nozzles;
- and
- a nozzle layer formed with a plurality of nozzle chambers to store ink supplied for each nozzle and a nozzle hole on a bottom of the nozzle chamber to eject a liquid solution,
- wherein each second electrode is individually formed between adjacent first electrodes, and
- wherein a groove is recessed upwards on a bottom surface of the nozzle layer, and the second electrode is formed inside the groove.
An inkjet printhead with a plurality of nozzles to eject a liquid solution by an electrohydrodynamic method, the inkjet printhead comprising:
- a first electrode formed for each of the plurality of nozzles, and applied with a voltage for ejecting the liquid solution by the electrohydrodynamic method;
- a first voltage controller configured to apply the voltage to the first electrode;
- a second electrode placed between and spaced apart from the first electrodes formed in the nozzles and grounded to inhibit electric field interference between the nozzles;
- a nozzle layer formed with a plurality of nozzle chambers to store ink supplied for each nozzle and a nozzle hole on a bottom of the nozzle chamber to eject a liquid solution;
- and
- a spacing layer placed on the nozzle layer and formed with a channel penetrated to communicate with the nozzle chamber,
- wherein each second electrode is individually formed between adjacent first electrodes, and
- wherein a groove is recessed downwards on a top surface of the spacing layer, and the second electrode is formed inside the groove.
An inkjet printhead with a plurality of nozzles to eject a liquid solution by an electrohydrodynamic method, the inkjet printhead comprising:
- a first electrode formed for each of the plurality of nozzles, and applied with a voltage for ejecting the liquid solution by the electrohydrodynamic method;
- a first voltage controller configured to apply the voltage to the first electrode;
- a second electrode placed between and spaced apart from the first electrodes formed in the nozzles and grounded to inhibit electric field interference between the nozzles;
- and
- a nozzle layer formed with a plurality of nozzle chambers to store ink supplied for each nozzle and a nozzle hole on a bottom of the nozzle chamber to eject a liquid solution,
- wherein each second electrode is individually formed between adjacent first electrodes,
- wherein the first electrode is formed on an inner surface of the nozzle chamber, and the second electrode is formed on a top surface of the nozzle layer, and
- wherein the nozzle layer comprises:
- a first nozzle layer formed with a plurality of nozzle chambers to store ink supplied for each nozzle and a nozzle hole on a bottom of the nozzle chamber to eject a liquid solution, and comprising the first electrode formed on an inner surface of the nozzle chamber;
- and
- a second nozzle layer formed on the first nozzle layer, formed with a plurality of communication chambers communicating with the nozzle chambers, and comprising a third electrode formed on an inner surface of the communication chamber and receiving a voltage for ejecting a liquid solution by an electrohydrodynamic method.
Dependencies are inferred from the claim text.