Patent application number | Description | Published |
20080231665 | INKJET PRINTHEAD, PRINTING METHOD USING THE SAME, AND METHOD OF MANUFACTURING THE INKJET PRINTHEAD - The inkjet printhead includes substrate having an ink feed hole formed to supply ink, a chamber layer stacked on the substrate, and including a plurality of main ink chambers formed therein with the ink feed hole therebetween and a plurality of compensation ink chambers formed therein between the main ink chambers that face each other; and a nozzle layer stacked on the chamber layer, and including a plurality of main nozzles corresponding to the main ink chambers and a plurality of compensation nozzles corresponding to the compensation ink chambers. | 09-25-2008 |
20080283494 | METHOD OF MANUFACTURING THERMAL INKJET PRINTHEAD - A method of manufacturing a thermal inkjet printhead. The method includes forming on a substrate a chamber layer having an ink chamber, forming a sacrificial layer on the chamber layer wherein the sacrificial layer fills the ink chamber, and planarizing a top surface of the sacrificial layer and of the chamber layer using a primary Chemical Mechanical Polishing (CMP) process until the sacrificial layer and the chamber layer attain a desired height, wherein a slurry is used in the primary CMP process that includes polishing particles having an average particle size of 500 nm˜2 μm. | 11-20-2008 |
20080313900 | METHOD OF MANUFACTURING INKJET PRINT HEAD - A method of manufacturing an inkjet print head simplifies a manufacturing process and uniformly forms an ink channel and includes forming a chamber layer using a low-speed optical hardening material on a substrate, hardening regions of the chamber layer for the wall of an ink channel by selectively exposing the chamber layer to light, forming a nozzle layer using a high-speed optical hardening material, having a higher optical reaction speed than that of the low-speed optical hardening material, on the chamber layer, hardening regions of the nozzle layer other than nozzles by selectively exposing the nozzle layer to light, and forming the ink channel and the nozzles by developing the chamber layer and the non-exposed regions of the nozzle layer. | 12-25-2008 |
20090021561 | INKJET PRINT HEAD AND MANUFACTURING METHOD THEREOF - An inkjet print head and manufacturing method includes a substrate, an insulating layer formed on a surface of the substrate to have an electrode formation space, an electrode formed in the electrode formation space to be positioned on the same plane with the insulating layer, a heater formed on upper surfaces of the insulating layer and the electrode, and a passivation layer formed on the insulating layer and the heater. The heater is formed to be flat on the insulating layer and the electrodes, thereby reducing the thickness of the passivation layer. Further, copper having relatively high electric conductivity is used as a material of the electrodes, which apply current to the heater to generate heat, instead of aluminum, thereby increasing a degree of freedom in the thickness of the electrodes. Further, uniform current can be applied to the respective heaters at different positions in single firing and full firing of ink, thereby reducing entire input energy and also improving ink ejection stability and reliability of the inkjet print head. | 01-22-2009 |
20090058952 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - Provided are an inkjet printhead and a method of manufacturing the same. The inkjet printhead includes: a substrate, on which a plurality of heaters for heating ink to generated ink bubbles are formed; a chamber layer including a plurality of ink chambers formed on the substrate; and a nozzle layer including a plurality of nozzles formed on the chamber layer. In addition, at least one of the chamber layer and the nozzle layer is formed of an imide silicone resin. | 03-05-2009 |
20090273647 | INKJET PRINT HEAD AND MANUFACTURING METHOD THEREOF - An inkjet print head includes a substrate formed with a feed hole through which ink is transferred, and a notch prevention layer covering an area on the substrate where the feed hole is to be formed. Plasma electrons flown into the feed hole while the hole is formed on the substrate through dry etching can move through the notch prevention layer. As a result, corrosion of the substrate around the feed hole by the electrons can be prevented, thereby achieving a uniform width of the feed hole. | 11-05-2009 |
20100060695 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - An inkjet printhead includes: a substrate in which an ink feed hole is formed; a chamber layer which is formed on the substrate by performing a photolithography process and which includes a first photosensitive resin; and a nozzle layer which is formed on the chamber layer by performing a photolithography process and which includes a second photosensitive resin. The first photosensitive resin and the second photosensitive resin are materials which are developed by different developing solutions, respectively. Additional layers and components may be incorporated into the inkjet printhead and may be formed on an upper surface of the substrate. The additional layers and components may include an insulating layer, one or more heaters, one or more electrodes, a passivation layer, a glue layer, and an anti-cavitation layer. | 03-11-2010 |
20100079547 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - Provided are an inkjet printhead and a method of manufacturing the same. The inkjet printhead may include a substrate having an ink feed passage, a chamber layer formed on the substrate and a plurality of ink chambers fillable with ink supplied from the ink feed hole. The printhead may also include a nozzle layer formed on the chamber layer, which includes a plurality of nozzles through which the ink is ejected and a glue layer interposed between the substrate and the chamber layer. The glue layer may include a cross-linked photoresist composition including photoresist. | 04-01-2010 |
20100110142 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - Inkjet printheads and methods of manufacturing the inkjet printhead are disclosed. The inkjet printhead may include a glue layer disposed between the substrate and a chamber layer. The glue layer may contain a crosslink inhibitor that inhibits cross linkage of a photosensitive resin during an exposing process. | 05-06-2010 |
20100128091 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - Disclosed are an inkjet printhead and a method of fabricating the same. The inkjet printhead can include a substrate; a chamber layer formed on the substrate and a nozzle layer formed on the chamber layer. The chamber layer defines one or more ink chambers in which ink to be ejected may be accommodated. The nozzle layer includes one or more nozzles through which the ink from the ink chambers are ejected. The nozzle layer may be formed of a cured product of a photosensitive dry film that includes an light absorption material. | 05-27-2010 |
20100165044 | INKJET PRTINTHEAD AND METHOD OF MANUFACTURING THE SAME - Provided are an inkjet printhead and a method of manufacturing the same. The inkjet printhead includes: a substrate including an ink feed hole; a chamber layer formed on the substrate and including a plurality of ink chambers in which ink supplied from the ink feed hole may be filled; and a nozzle layer formed on the chamber layer and including a plurality of nozzles through which ink may be ejected, wherein the chamber layer and the nozzle layer are respectively formed of cured products of a first negative photoresist composition and a second negative photoresist composition, wherein the first negative photoresist composition and the second negative photoresist composition include a bisphenol-A novolac epoxy resin represented by Formula 1; at least one epoxy resin selected from a first epoxy resin represented by Formula 2, and a second epoxy resin represented by Formula 3; a cationic photoinitiator; and a solvent. | 07-01-2010 |
20140366568 | HEAT EXCHANGER AND OUTDOOR UNIT FOR AIR-CONDITIONER HAVING THE SAME - A heat exchanger includes a refrigerant pipe through which a refrigerant flows, and a plurality of fins coupled to an outer circumference surface of the refrigerant pipe, wherein each fin includes a first region disposed upstream with respect to an air flow direction, and a second region which forms a boundary with the first region and is disposed downstream with respect to the air flow direction, and wherein the first region and the second region have different surface energies in order to prevent formation of condensation water on the fin. | 12-18-2014 |