摘要:
An apparatus to sense the temperature of an ink-jet head includes at least one or more CMOS (complementary metal oxide semiconductor) lateral BJTs (bipolar junction transistors) to sense the temperature of the ink-jet head, and a current supply unit to supply a current to the CMOS lateral BJTs. Minimum sized CMOS lateral BJTs are applied to an ink-jet printer head so that precise temperature control can be performed in a shuttle or array type ink-jet printer.
摘要:
An apparatus to sense the temperature of an ink-jet head includes at least one or more CMOS (complementary metal oxide semiconductor) lateral BJTs (bipolar junction transistors) to sense the temperature of the ink-jet head, and a current supply unit to supply a current to the CMOS lateral BJTs. Minimum sized CMOS lateral BJTs are applied to an ink-jet printer head so that precise temperature control can be performed in a shuttle or array type ink-jet printer.
摘要:
An inkjet printhead and a method of manufacturing the same. The inkjet printhead may include a substrate through which an ink feed hole to supply ink is formed, a chamber layer stacked above the substrate and including a plurality of ink chambers filled with ink supplied from the ink feed hole, and a nozzle layer stacked on the chamber layer, wherein a plurality of nozzles through which ink is ejected and a plurality of via holes are formed in the nozzle layer.
摘要:
A method of manufacturing an inkjet printhead includes forming a chamber layer, in which a plurality of ink chambers is formed, on a substrate, forming trench to define an island surrounded by the trench on an upper part of the substrate by etching an upper surface of the substrate to a predetermined depth, forming a sacrifice layer on the chamber layer to fill the trenches and the ink chambers, forming a nozzle layer, in which a plurality of nozzles are formed, on the sacrifice layer and the chamber layer, forming an ink feed hole by etching a lower part of the substrate until the sacrifice layer that is filled in the trench is exposed, and removing the sacrifice layer and the island.
摘要:
A method of manufacturing an inkjet printhead includes forming an insulating layer, heaters, and electrodes sequentially on a substrate, depositing a chamber layer having a plurality of ink chambers on the insulating layer, forming an ink feed hole in the substrate and the insulating layer to supply ink to the ink chambers, preparing a nozzle layer having a plurality of nozzles and an adhesive layer formed on a lower surface of the nozzle layer, and bonding the nozzle layer to the chamber layer.
摘要:
A thermal inkjet printhead includes a plurality of bonding pads to which an external voltage is applied, a plurality of common wires connected to the each of the bonding pads, respectively, a plurality of individual wires connected to each of the common wires, respectively, and heaters connected to each of the individual wires, respectively, to generate ink bubbles by heating ink, wherein each of the common wires includes a first metal layer and a first metal bump which are formed on the first metal layer.
摘要:
An inkjet printhead includes a substrate in which an ink feed hole is formed, a plurality of ejection devices formed on the substrate at sides of the ink feed hole, a chamber layer stacked on the substrate and in which a plurality of ink chambers, which correspond to the ejection devices and in which ink supplied from the ink feed hole is filled, are formed, and a nozzle layer in which a plurality of nozzles corresponding to the ink chambers are formed, wherein the ink feed hole includes a plurality of through holes formed through the substrate in the thickness direction thereof.
摘要:
An ink feedhole of an inkjet printhead and a method of forming the same includes an ink feedhole that penetrates a substrate and has a width that narrows in an upper direction of the substrate, wherein at least one internal wall of the ink feedhole has a plurality of steps and inclines with respect to a surface of the substrate.
摘要:
Provided are a method of manufacturing a photosensitive epoxy structure using a photolithograph process, and a method of manufacturing an inkjet printhead using the method of manufacturing a photosensitive epoxy structure. The method of manufacturing the photosensitive epoxy structure includes forming an epoxy material layer formed of photosensitive epoxy; forming a first exposure pattern in the epoxy material layer by performing a first exposure operation; forming a second exposure pattern in the non-exposed portions of the epoxy material layer by performing a second exposure operation; and developing the epoxy material layer, wherein the amount of first UV energy used in the first exposure operation is different from the amount of second UV energy used in the second exposure operation.
摘要:
Provided is a thermal inkjet printhead that includes a substrate, which may comprise an ink feed hole for supplying ink, a chamber layer, which is stacked on the substrate, and which comprises an ink chamber that is filled with the ink supplied from the ink feed hole, a heater, which is prepared inside the ink chamber and heats the ink, an island, which is formed on the substrate, and which is prepared at an ink inlet port of the ink chamber, and a nozzle layer, which is stacked on the chamber layer, and which comprises a nozzle for ejecting the ink. The walls of the ink chamber and the island that face each other are symmetrical with respect to the center of the nozzle.