Abstract:
Disclosed herein is an ejecting apparatus including: an upper bezel which includes an inlet through which ejectable fluid flows in from an external source, a channel which fluidly communicates with the inlet and through which the ejectable fluid flows, and an upper mounting portion which fluidly communicates with the channel and is opened downwardly; a lower bezel which includes a lower mounting portion which is opened upwardly to correspond to the upper mounting portion, and a nozzle slit which fluidly communicates with the lower mounting portion to eject the ejectable fluid to an outside, the lower bezel being fastened to the upper bezel, and a nozzle chip which is interposed between the upper mounting portion and the lower mounting portion to receive the ejectable fluid from the channel and discharge the ejectable fluid into the nozzle slit by being driven by an actuator.
Abstract:
There is provided an inkjet print head that includes: an inkjet head plate with a plurality of head cells including ink passages where introduced ink is ejected through a nozzle by passing through a pressure chamber; and a piezoelectric actuator formed on the top of the inkjet head plate and formed at a position corresponding to the pressure chamber, wherein the area of at least one of the pressure chamber and the piezoelectric actuator is changed to make ejection characteristics of the ink ejected from the plurality of head cells uniform.
Abstract:
Disclosed are an inkjet print head and a method of manufacturing the same. An inkjet print head according to an aspect of the invention may include: an inkjet board having an ink passage therein; a cutting portion provided outside the ink passage of the inkjet board and having a cutting surface created by separation into head chip units of the inkjet board; and an auxiliary cutting portion provided from one surface of the cutting portion inwardly in a thickness direction of the inkjet board, and assisting the separation into head chip units of the inkjet board.
Abstract:
Provided are a nozzle plate of an inkjet printhead and a method of manufacturing the same. The nozzle plate includes: a substrate including a plurality of nozzles; and a plurality of first grooves formed on the surface of a substrate around the nozzles. In this structure, ink remaining on the surface of the nozzle plate can be efficiently removed.
Abstract:
Provided are a piezoelectric inkjet printhead and a method of manufacturing the same. The piezoelectric inkjet printhead includes first and second single-crystalline silicon substrates. An ink flow path is disposed in a first surface of the first substrate. The ink flow path includes an ink introduction port, a manifold for supplying ink, a plurality of pressure chambers filled with ink to be ejected, a plurality of restrictors for connecting the manifold with the plurality of pressure chambers, respectively, and a plurality of nozzles for ejecting ink. The second substrate is bonded to the first substrate to thereby complete the ink flow path. A plurality of piezoelectric actuators are disposed on a second surface of the first substrate to correspond to each of the pressure chambers and provide drivability required for ejecting ink to the respective pressure chambers. In this construction, aligning the first and second substrates is unnecessary, so that the manufacturing process can be simplified, the manufacturing cost can be reduced, and ink ejecting performance can be improved.
Abstract:
A piezoelectric inkjet printhead including an upper substrate formed of a single crystal silicon substrate or an SOI substrate and having an ink inlet therethrough, and a lower substrate formed of an SOI substrate having a sequentially stacked structure with a first silicon layer, an intervening oxide layer, and a second silicon layer in which a manifold, pressure chambers, and dampers are formed in the second silicon layer by wet or dry etching, and nozzles are formed through the intervening oxide layer and the first silicon layer by dry etching, and a method of manufacturing the same.
Abstract:
A piezoelectric inkjet printhead including an upper substrate formed of a single crystal silicon substrate or an SOI substrate and having an ink inlet therethrough, and a lower substrate formed of an SOI substrate having a sequentially stacked structure with a first silicon layer, an intervening oxide layer, and a second silicon layer in which a manifold, pressure chambers, and dampers are formed in the second silicon layer by wet or dry etching, and nozzles are formed through the intervening oxide layer and the first silicon layer by dry etching, and a method of manufacturing the same.
Abstract:
A method of forming a piezoelectric actuator of an inkjet head formed on a vibrating plate to provide a driving power for ejecting ink to each of pressure chambers is provided. The method includes forming a lower electrode on a vibrating plate, forming a piezoelectric layer on the lower electrode to be located above each of pressure chambers, forming a protecting layer covering the lower electrode and the piezoelectric layer, exposing an upper surface of the piezoelectric layer by decreasing a thickness of the protecting layer and the piezoelectric layer, forming an upper electrode on the upper surface of the piezoelectric layer, removing the protecting layer. According to the present invention, since the piezoelectric layer having a flat upper surface is formed in uniform figure, area and thickness of the upper electrode formed thereon is uniformly controlled.
Abstract:
A method for detecting a polymerase chain reaction (PCR) product is provided. The method includes (a) providing at least a pair of electrodes in a PCR solution-containing vessel; (b) performing PCR; (c) producing an electric field between the electrodes; and (d) measuring a change in a dielectric property in the PCR solution. Therefore, a PCR product can be detected in real time.
Abstract:
A piezoelectric inkjet printhead including an upper substrate, having an ink inlet, a manifold connected with the ink inlet, and a plurality of pressure chambers arranged along at least one side of the manifold, wherein the ink inlet passes through the upper substrate, and the manifold and the pressure chambers are formed in a lower surface of the upper substrate, a lower substrate disposed directly adjacent the upper substrate, the lower substrate having a plurality of restrictors each connecting the manifold with one end of each of the pressure chambers, and a plurality of nozzles each being formed in a position of the lower substrate that corresponds to the other end of each of the pressure chambers to vertically pass through the lower substrate, wherein the plurality of restrictors are formed in an upper surface of the lower substrate, and a plurality of piezoelectric actuators.