Patent application number | Description | Published |
20080230513 | METHOD OF MANUFACTURING INK-JET PRINT HEAD - A method for manufacturing an ink-jet print head including: preparing a single crystal silicon wafer having a (110) crystal plane orientation, as a substrate; forming a heater to heat an ink, on a front surface of a silicon substrate; forming a trench inward of the heater; forming a flow channel layer defining an ink passage, on the front surface of the substrate; forming a nozzle layer having a nozzle on the flow channel layer; and forming an ink supply channel from a rear surface of the substrate to the trench by anisotropic wet etching. | 09-25-2008 |
20080303869 | INK JET PRINT HEAD AND MANUFACTURING METHOD THEREOF - An ink jet print head and a manufacturing method thereof that is improved so as to simplify a glue layer forming process including a glue layer of the ink jet print head is made of a silicone modified resin having a photosensitive property, such as a silicone modified polyimide resin. The glue layer can be formed by coating a silicone modified polyimide resin solution on a substrate, forming a silicone modified polyimide resin layer by vaporizing a solvent from the coated silicone modified polyimide resin solution, and patterning the silicone modified polyimide resin layer. | 12-11-2008 |
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 |
20090009562 | INKJET PRINTER HEAD AND METHOD TO MANUFACTURE THE SAME - An inkjet printer head includes a substrate, an insulating layer having a groove and disposed on the substrate, a heating member having a concavely curved upper surface and disposed on an upper portion of the groove, an electrode to make contact with the heating member to apply electric current to the heating member, a chamber layer disposed on the heating member, and a nozzle layer having one or more nozzles and disposed on the chamber layer. According to the inkjet printer head, the heating member has a curved structure to increase a length of the heating member, so that resistance of the heating member can be increased. Thus, the heating member can stably operate regardless of current variation applied thereto, and the printing work can be performed. | 01-08-2009 |
20090015608 | INKJET IMAGE FORMING APPARATUS - Auxiliary nozzles to be used as substitutes for main nozzles formed near an ink feedhole in a print head. The main nozzles are used to perform printing when such nozzles are not defective. When a main nozzle has become defective and cannot normally jet ink, a corresponding spare nozzle is used to perform printing in place of the main nozzle. | 01-15-2009 |
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 |
20090027450 | INKJET PRINT HEAD AND MANUFACTURING METHOD THEREOF - An inkjet print head and a manufacturing method thereof capable of simplifying a manufacturing process without performing an additional process to form a heater layer that includes a substrate, a heating element stacked on the substrate to heat the ink, a transistor having a gate electrode to drive the heating element, a chamber layer to form an ink chamber filled with the ink above the heating element, and a nozzle layer stacked on the chamber layer to form a nozzle to eject the ink, wherein the gate electrode and the heating element include a metal silicide film formed through a salicide process. | 01-29-2009 |
20090058897 | INKJET PRINT HEAD AND INKJET IMAGE FORMING APPARATUS HAVING THE SAME - An inkjet print head and an inkjet image forming apparatus having the same includes photo sensors are mounted on the inkjet print head to sense whether or not nozzles normally discharge ink and to sense missing nozzles whenever the ink is printed on a recording paper, thereby rapidly and correctly sensing the missing nozzles. | 03-05-2009 |
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 |
20090071936 | METHOD OF MANUFACTURING INKJET PRINTHEAD AND INKJET PRINTHEAD MANUFACTURED USING THE SAME - A method of manufacturing an inkjet printhead using a channel forming material, in which a glue layer to enhance an adhesive force between a substrate and a channel forming layer is not required. | 03-19-2009 |
20090153623 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - An inkjet printhead and a method of manufacturing the same. The inkjet printhead includes a substrate, a chamber layer to define an ink chamber on an upper portion of the substrate, and an adhesive portion to adhere to the substrate and the chamber, wherein the adhesive portion is formed of a phenolic sensitive resin. | 06-18-2009 |
20090237451 | INKJET PRINT HEAD AND MANUFACTURING METHOD THEREOF - An inkjet print head including a substrate and a first film member stacked on the substrate to form an ink path, and a manufacturing method thereof. The first film member includes a path-defining layer made of a photosensitive material and formed with the ink path, and an adhesive layer made of a photosensitive material and used to stably bond the path-defining layer to the substrate. With this configuration, the path-defining layer and the adhesive layer can be simultaneously stacked on the substrate and also, can be patterned simultaneously. | 09-24-2009 |
20090267990 | THERMAL INKJET PRINT HEAD - 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. | 10-29-2009 |
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 |
20090309932 | HEATER OF AN INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE HEATER - A heater of a thermal inkjet printhead. The heater is formed of tantalum aluminum oxynitride (Ta—Al—ON), wherein the tantalum aluminum oxynitride is formed of about 30 to about 60 atomic % tantalum, about 10 to about 30 atomic % aluminum, about 5 to about 30 atomic % oxygen, and about 5 to about 30 atomic % nitrogen. | 12-17-2009 |
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 |
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 |
20100226333 | SYSTEM AND METHOD FOR PROVIDING SERVICES USING THE SAME FREQUENCY IN A WIRELESS COMMUNICATION SYSTEM - Method and apparatus for performing communication between a Base Station (BS) and a Mobile Station (MS) in a Broadband Wireless Access (BWA) communication system. A method includes determining, by the BS, a Pseudo Random Bit Sequence Identifier (PRBS_ID) for renumbering subchannels in a predetermined Partial Usage of SubChannels (PUSC) zone among a plurality of PUSC zones in a downlink (DL) frame, and transmitting, by the BS, the PRBS_ID to the MS within a Space Time Coding Zone Information Element (STC_ZONE_IE) of a DL MAP message included in the DL frame. | 09-09-2010 |
20130148162 | IMAGE FORMING APPARATUS SUPPORTING PEER TO PEER CONNECTION AND METHOD OF PERFORMING IMAGE FORMING OPERATION THEREOF - A method of performing an image forming operation in an image forming apparatus supporting peer to peer (P2P) connection includes P2P connecting the image forming apparatus to an external wireless device while the image forming apparatus is wirelessly connected to an access point (AP) of an infrastructured network, receiving a discovery packet from the wireless device via a P2P interface, transmitting to the wireless device a response packet including an Internet protocol (IP) address of the P2P interface, receiving from the wireless device an image forming operation performing request having the IP address of the P2P interface as a destination, and performing the requested image forming operation. | 06-13-2013 |
20140368882 | IMAGE FORMING APPARATUS SUPPORTING PEER TO PEER CONNECTION AND METHOD OF PERFORMING IMAGE FORMING OPERATION THEREOF - A method of performing an image forming operation in an image forming apparatus supporting peer to peer (P2P) connection includes P2P connecting the image forming apparatus to an external wireless device while the image forming apparatus is wirelessly connected to an access point (AP) of an infrastructured network, receiving a discovery packet from the wireless device via a P2P interface, transmitting to the wireless device a response packet including an Internet protocol (IP) address of the P2P interface, receiving from the wireless device an image forming operation performing request having the IP address of the P2P interface as a destination, and performing the requested image forming operation. | 12-18-2014 |