baber/WOPTO huggingface dataset:
Patent KR-20080096983-A (KR)
Title: Filler sand for blocking hole of molten metal in ladle and method of preparation thereof
Inventor: LEE JAE MAN
IPC: B22D41/00
Filed: 2007-04-30
Abstract: A sand for a blocking hole of molten metal in a ladle is provided to improve the working safety and the quality of a steel material by including artificial silica sand controlled the content of Al2O3 and SiO2. A sand for a blocking hole of molten metal in a ladle comprises following compositions, artificial silica sand, chromite and a binder are included, the artificial silica sand is 72 ~ 85weight% of SiO2, 10 ~ 18 weight% of Al2O3, 0.1 ~ 1.0 weight% of Fe2O3, 0.2 ~ 0.5 weight% of CaO, and 0.05 ~ 0.2 weight% of K2O, 0.1 ~ 1.0 weight% of Na2O. At this time, the sand for a blocking hole of molten metal in a ladle is included 40 ~60weight% of the artificial silica and 3 ~ 8weight% of the binder about 40 ~ 60weight% of chormite.
Patent KR-20080098213-A (KR)
Title: Method of manufacturing semiconductor device for prevent not open and punch
Inventor: KIM TAE HAN
IPC: H01L27/108
Filed: 2007-05-04
Abstract: The manufacturing method of the semiconductor device is provided to secure the margin available of the etching process for the following open area formation by reducing the step difference between the peripheral structure and the storage node contact plug. The manufacturing method of the semiconductor device includes the step of forming the insulating layer in which the storage node contact hole is equipped on the substrate; the step of forming the conductive film in the front side it fills the storage node contact hole; the step of forming the storage node contact plug inside the storage node contact hole; the step of for forming sacrificing layer(24A) in the front side including storage node contact plug(23); the step of planarizing the surface of the sacrificing layer; the step of removing a part the insulating layer neighboring with the storage node contact plug.
Patent KR-20080101286-A (KR)
Title: The method of making spice source
Inventor: CHOI WON JEAN
IPC: A23L11/20
Filed: 2007-05-16
Abstract: A spice source is provided to use the spice source for all soup types and facilitate cooking and help people's health as chemical seasoning is not added and remove fishy smell and meat smell and prevent adult chronic disease. A manufacturing method of the spice source comprises the following steps of: a first step which puts water 2.5kg into short-necked clam 4kg and heats the water and the short-necked clam for 30~90 minutes in 80~120deg.C and cools the water and the short-necked clam in the normal temperature; a second step mixing the salt 8.6g, seasonings 2g, red pepper paste 1kg, doenjang 1kg, soju 3.6kg, the pulverized freshwater shrimp 2kg, the pulverized clam meat 1kg, the pulverized garlic 2kg, the pulverized ginger 500g, and the pulverized red pepper solution 2kg and pepper 5g with the shell meat juice 2kg cooled by the first step; and a third step secondly mixing the cayenne pepper 4.8kg which is thickly pulverized, and the cayenne pepper 7.2kg which is minutely pulverized.
Patent KR-20080110428-A (KR)
Inventor: SON KYOUNG KWAN
IPC: G06F1/16
Filed: 2007-06-15
Abstract: 본 고안은 컴퓨터용 마우스 겉 표면의 재질을 지압으로 만들어 건강을 증진 시키기 위한 것이다. 
       
     마우스, 지압
Patent KR-20080114426-A (KR)
Title: Chamber apparatus for manufacturing semiconductor device
Inventor: CHOI YONG KYOO
IPC: H01L21/00
Filed: 2007-06-27
Abstract: A chamber apparatus for manufacturing semiconductor device including a chuck is provided to prevent defect on a substrate by preventing a foreign material from falling to the substrate according to a separation of a polymer layer. A chamber apparatus for manufacturing semiconductor device includes a processing chamber and a chuck. The processing chamber has a curved surface inducing a polymer adsorption in an wall(110) surface faced in an internal space in which a board processing process is performed. The chuck supports the substrate mounted within the chamber. The curved structure adheres a metal grid(111) in the wall surface.
Patent KR-20090000926-A (KR)
Title: Detection microarray for y chromosomal microdeletion and detecting method using the same
Inventor: LEE SU MAN
IPC: C12Q1/68
Filed: 2007-06-29
Abstract: A microarray for detecting the micro-deletion of Y chromophore, and a method for detecting the micro-deletion of Y chromophore by using the microarray are provided to allow the deletion part to be detected precisely. A microarray for detecting the micro-deletion of Y chromophore comprises a target probe for detecting the micro-deletion of the gene related to the male infertility, wherein the target probe comprises an oligonucleotide having the base sequence identical or complementary to the TTTY5, TTTY6, TTTY17, BPY2, CDY1, PRY and DAZ gene sequence located in the AZFc region of Y chromophore.
Patent KR-20080007185-A (KR)
Title: Lithographic apparatus and device manufacturing method
Inventor: JEUNINK ANDRE BERNARDUS
IPC: H01L21/027
Filed: 2007-07-13
Abstract: A lithographic apparatus and a device manufacturing method are provided not to reduce a clamping force applied to a patterning device with a support clamp by having a banding mechanism. A lithographic apparatus includes a lighting system, a support clamp(2), a bending mechanism(3), a substrate table, and a projection system. The lighting system is formed to condition a radiation beam. The support clamp has a support body to support a patterning device(1) for patterning a cross section of the radiation beam. The support body clamps the patterning device to the support body. The bending mechanism applies a bending torque to the clamped patterning device and has a force/torque actuator to act on the clamped patterning device without substantially reducing the clamping force applied to the patterning device by the support clamp. The substrate table receives a substrate. The projection system projects the patterned radiation beam on a target portion of the substrate.
Patent KR-20090009551-A (KR)
Title: Power steering pump
Inventor: LEE TAE HEON
IPC: B62D5/06
Filed: 2007-07-20
Abstract: A power steering pump is provided to increase the internal leakage by closing the guide hole using a cone valve moves according to the outer circumference of guide. A power steering pump comprises the pump housing in which the driving shaft is built-in; the rotor which is installed to be put in to the cam hole of the cam ring and be connected in the driving shaft; the side plate(10) pressurizing the one-side wall of the rotor and the cam ring; the guide(50) in which the side and the guide hole communicating inside and outside is formed; the cone valve(60) which open and shuts the guide hole; and the spring(70) which elastically supports the cone valve.
Patent KR-20090013419-A (KR)
Title: Phase change memory devices and methods of forming the same
Inventor: KANG MYUNG JIN
IPC: H01L21/8247
Filed: 2007-08-01
Abstract: A phase change memory device and a method of forming the same are provided to prevent the characteristic deterioration of the phase change material layer by filling the opening with the phase change material layer. The insulating layer(110) is arranged on the substrate(100). The insulating layer comprises the oxide film. The bottom electrode(120) can fill up the lower part of the opening(115). The bottom electrode is electrically connected to the substrate having the selection element. The phase change material pattern is arranged within the opening. The wetting pattern is interposed between the side wall of the opening and phase change material pattern(130a). The phase change material pattern contacts with the wetting pattern. The wetting pattern is extended and interposed between the phase change material pattern and the bottom electrode. The phase change material pattern and bottom electrode are electrically connected through the wetting pattern.
Patent KR-20080035953-A (KR)
Title: Timing calibration circuit for semiconductor test system and the method thereof
Inventor: MURATA KAZUHIKO
IPC: G01R31/28
Filed: 2007-08-02
Abstract: A timing calibration circuit of a semiconductor test system and a timing calibration method are provided to improve a timing calibration accuracy of a semiconductor tester by suppressing a skew in a calibration timing due to an on-resistor in a signal selecting circuit. One of test signals from plural drivers is selected by a signal selecting circuit, which is composed of plural semiconductor relays. The selected test signal is compared with a predetermined reference voltage in a comparator circuit. A timing calibration circuit includes a voltage measuring circuit(6) and a reference voltage generating circuit(7). The voltage measuring circuit measures a DC voltage, which is outputted from the driver, by using the signal selecting circuit. The reference voltage generating circuit sets the voltage corresponding to the measured signal outputted from the voltage measuring signal as a reference voltage and outputs the reference voltage to the comparator circuit.
Patent KR-20080014681-A (KR)
Title: Synchronous rectification switching regulator, and circuit and method for controlling the same
Inventor: KOJIMA SHINICHI
IPC: H02M3/155
Filed: 2007-08-10
Abstract: A synchronous rectification switching regulator and a circuit and a method for controlling the same are provided to reduce mean current consumption of a voltage comparing circuit by increasing current consumption only during second switching device-on. A synchronous rectification switching regulator(1) comprises a first switching device, an inductor(L1), a second switching device, a control circuit part, and a reverse current detecting circuit part. The first switching device performs switching in accordance with an inputted control signal. The inductor performs charging at an inputted voltage by the switching of the first switching device. The second switching device is for synchronous rectification and performs discharging of the inductor by switching in accordance with the inputted control signal. The control circuit part performs switching control for the first switching device for an output voltage from an output terminal to be a predetermined constant voltage and performs switching control for the second switching device in reverse to the first switching device. The reverse current detecting circuit part forcibly switches off the second switching device for the control circuit part if reverse current or a symptom of the reverse current in direction to the second switching device is detected.
Patent KR-20090019559-A (KR)
Title: Surface mounting type inductor and apparatus for manufacturing and method for manufacturing the same
Inventor: JUN MYUNG HOON
IPC: H01F27/24
Filed: 2007-08-21
Abstract: A surface mounting type inductor, a manufacturing apparatus thereof, and a manufacturing method thereof are provided to reduce a size and a thickness thereof by preventing deformation of a core and a wire by high temperature and welding pressure caused by a wire welding process. An upper flange(12) and a lower flange(13) of a core(10) are prepared at both sides of upper and lower sides of a winding core(11) for deciding a winding region. A terminal(18) is formed at the lower flange. A wire(20) is drawn from the upper flange and is connected to the terminal of the lower flange. A drawing-out groove(17) is formed at the lower flange in order to separate the wire in a constant distance from the winding region. The lower flange is protruded in comparison with the upper flange so that a drawing-out groove and a terminal are formed at a protrusive region(16). An exterior resin(30) having a magnetic property is coated on the wound wire.
Patent KR-20090025634-A (KR)
Title: Apparatus for noticing soil moisture content of a flowerpot
Inventor: KANG TAE JIN
IPC: A01G9/02
Filed: 2007-09-06
Abstract: A water content alarm apparatus is provided to enable a user to recognize current water contents and water supplying point of time for a flowerpot according to a water demand of a plant. A water content alarm apparatus(100) comprises a pair of probes(110), a selection key(120), a controller(130), an alarm unit(140), and a power supplying source(150). The pair of probes fixed on soil filled inside a flowerpot measures resistance against current flow. The selection key is selected according to a demand quantity of water for a plant in the flowerpot. The controller generates an electric signal by comparing the measured resistance value to a resistance range of the selection key. The alarm unit outputs a message corresponding to the electric signal generated by the controller.
Patent KR-20090030932-A (KR)
Title: 미세 패턴 데코레이션 시트 구조
Inventor: PARK CHUL
IPC: H04B1/38
Filed: 2007-09-21
Abstract: 휴대폰의 윈도우와 같은 데코레이션 시트의 제작에 있어서, 스핀 등 미세 패턴이 표면에 형성이 되며, 금속 박막이나 금속 산화물 박막 코팅을 통하여 금속질감이 나게 하는 효과로서, 미세 패턴이 형성이 된 면의 반대 면에 인쇄 등을 통하여 칼라효과를 내며, 미세 패턴이 있는 면은 자외선 경화 접착제 등을 이용하여 하드 코팅이 되어 있는 필름을 접착하는 데코레이션 시트에 관한 것이다. 
       
     윈도우 플레이트, 스핀, 미세 패턴, UV 경화 수지, 코팅, 인쇄, 배면 평면 인쇄, 보호 시트, 데코레이션 시트, 미세 패턴 시트 중첩, 보호 시트에 인쇄
Patent KR-20090033504-A (KR)
Title: Method and apparatus for operating usage log management and usage fee inquiry of wireless internet service in mobile station
Inventor: PARK JU YOUNG
IPC: H04W4/24
Filed: 2007-09-28
Abstract: A method and an apparatus for performing usage log management and usage fee inquiry of a wireless internet service in a mobile terminal are provided to receive rate information from a server, thereby quickly and easily inquiring a connection fee with regard to a connection log. If an accessed detail inquiry menu is selected and inquired in a screen(S140), a wireless Internet access list is provided(S141). If a rate inquiry menu is selected and requested(S142), charged lists with regard to each usage contents are provided(S143). If the total connection fee is inquired(S150), a connection fee per each service method is provided(S151).
Patent KR-20090035186-A (KR)
Title: A coating apparatus for mass production by using a loading and unloading multi substrate holder
Inventor: CHO SANG JIN
IPC: C23C14/24
Filed: 2007-10-05
Abstract: A depositing thin film device of mass production type using a bulk substrate mounting and desorption system is provided to remove the vacuum time as particles within a thin film deposition chamber with a target gun is no need to be frequently removed. A depositing thin film device(1) of mass production type using a bulk substrate mounting and desorption system comprises: a substrate mounting chamber(10') for the thin film deposition of vacuum; a plurality of substrate holders individually holding a substrate; a first multilayer substrate holder(20) having a first and second protrusion on one side of the substrate holders; a first straight line transport drive(30) including a first hook at one side specified position, transferring the substrate to a gate valve; a second linear transfer driving part(33) including a second hook in one side specified position, transferring the substrate to a substrate deposition waiting chamber(40) from the gate valve; a thin film deposition chamber where the deposition process is made; a substrate holder located in the substrate deposition zone fact is moved to the substrate deposition waiting chamber; a second multilayer substrate holder(20') of a substrate detach chamber(10) located in the substrate deposition waiting chamber; a third linear transfer driving part(33') including a third hook in one side specified position; and a fourth linear transfer driving part(30') including a fourth hook in one side specified position, transferring the substrate holder to the home position of a multi substrate stack holder room.
Patent KR-20090035915-A (KR)
Title: Charge processing system for video communication and method thereof
Inventor: KIM SOO NYON
IPC: H04M15/16
Filed: 2007-10-08
Abstract: A system for processing the billing for a video call and a method thereof are provided to differently set up the rate of a video phone call fee according to each service when using video call-based additional services. Switching units(110,120,130) produce the charging data corresponding to the use of the video call by a calling terminal. If the calling terminal uses an additional service, the switching units request to provide the service without fee. According as the call connection with a called terminal fails, a Video VAS System(200) provides the additional service to the calling terminal. The Video VAS System transmits additional service information for informing that the additional service is provided to the switching units.
Patent KR-20090037066-A (KR)
Title: Synthesis method of metal doped tio2(titanate) nanotubes with packed sheet for high pressure hydrogen tank in fuel cell vehicle
Inventor: KIM SUN JAE
IPC: B82B3/00
Filed: 2007-10-11
Abstract: Provided is titanium dioxide nanotube powder with ultrafine structural nanotubes by doping metal nickel through a mechanical alloying method and hydrothermally synthesizing the metal nickel using rutile structure of powder as a starting material. A method for preparing titanium dioxide nanotube powder comprises the following steps of: preparing nanotube type Ni-doped TiO2 powder using Ni-doped TiO2 powder as a starting material; and drying the nanotube type Ni-doped TiO2 powder at a temperature range of 60-200°C for 2-24 hours to obtain powder. 1-8wt% of titanium hydroxide is added when the Ni-doped TiO2 powder is prepared. In the step of preparing the nanotube type Ni-doped TiO2 powder, the Ni-doped TiO2 powder is added to NaOH and/or metal hydroxide and heat-treated at 120-180°C for 24-72 hours.
Patent KR-20080033127-A (KR)
Title: Thin film transistor
Inventor: LI YUNING
IPC: H01L29/786
Filed: 2007-10-12
Abstract: A thin film transistor is provided to form a semiconductor layer which is crystalline zinc oxide oriented with the c-axis perpendicular to the plane of a dielectric layer or the substrate by liquid-depositing a ZnO nano-disk composition. A TFT consists of a substrate, a gate electrode, a source electrode, a drain electrode, a gate dielectric layer and a ZnO semiconductor layer. A gate electrode(18) is formed on a substrate(16). A gate dielectric layer(14) is formed on the substrate. A source electrode(20) and a drain electrode(22) are formed on the gate dielectric layer. The ZnO semiconductor layer(12) is formed between the source electrode and the drain electrode.
Patent KR-20090038233-A (KR)
Title: Mobile communication terminal for providing lighting for connection terminal and method for the same
Inventor: LEE JIN SUNG
IPC: H04B1/40
Filed: 2007-10-15
Abstract: A mobile communications terminal including illumination for a connection terminal for efficiently managing the consumption of a battery is provided to confirm the location of the connection terminal located on the communication terminal easily. A connection terminal unit is lit so that a lighting unit(130) distinguish the connection terminal unit. An illumination control unit(120) determines whether to connect an external terminal through the connection terminal. The illumination control unit controls the lighting switch part(140) based on the decision result. The lighting switch part performs the on/off operation of the lighting part. The lighting unit is combined with the connection terminal unit.
Patent KR-20090044091-A (KR)
Inventor: KIM KYUNG EUNG
IPC: H05B41/285
Filed: 2007-10-31
Abstract: 본 발명은 무전극 조명의 안정화 기기에 관한 것으로, AC 전원을 정류하여 DC 전압으로 변환하는 정류기; DC 전압을 자려 발진하여 조명이 필요로 하는 주파수를 생성하여 조명에 제공하는 전압 변환기; 및 조명의 존재 여부를 감지하여, 조명이 존재하지 않으면 상기 전압 변환기의 동작을 중지시키기 위한 제어 신호를 발생하여 전압 변환기의 동작을 중지시키는 무부하 보호기를 포함하여, 무전극 조명의 안정화 기기의 유지 보수를 위해 조명을 교환하는 경우에도 안정적인 동작을 지원함과 동시에 조명의 동작 특성을 반영하여 조명에 제공하는 전원의 주파수를 가변 할 수 있도록 한다. 
     
     무전극 조명, 안정화 기기, 무부하 보호기
Patent KR-20080041579-A (KR)
Title: Solder ball mounting method and solder ball mounting apparatus
Inventor: SAKAGUCHI HIDEAKI
IPC: H01L21/60
Filed: 2007-11-06
Abstract: A method and an apparatus for mounting a solder ball are provided to reduce the number of missing balls and to exactly and effectively mount the solder ball on an electrode by supplying the solder ball to a ball supply opening as moving plural masks for mounting the solder ball. Flux is provided on an electrode(3) formed on a substrate(1). Ball supply openings(12A,12B) are formed on a position opposite to the electrode. Plural masks(10A,10B) for mounting a solder ball are arranged on the substrate so that an opening area of the ball supply opening progressively increases upwardly. As one or plural masks except for a bottom mask formed on the substrate moves in a surface direction of the substrate to supply a solder ball(15) in the ball supply opening, the solder ball is mounted on the electrode. The solder ball is joined to the electrode.
Patent KR-20090047183-A (KR)
Inventor: JUNG JAE YOON
IPC: F02D35/00
Filed: 2007-11-07
Abstract: 본 발명은 디젤엔진에서 터보차저 전단에 형성되는 배기가스의 온도를 모델링을 통해 검출하고, 모델링된 배기가스의 온도에 따라 엔진 출력을 제한 제어하는 것이다. 
     본 발명은 시동 온 상태에서 엔진 회전수와 람다센서의 신호를 검출하는 과정, 엔진 회전수별 람다센서 신호와 배기온도의 상관관계를 이용하여 터보차저 전단의 배기가스 온도를 모델링하는 과정, 모델링된 배기가스 온도가 설정된 제1기준값을 초과하였는지 판단하는 과정, 배기가스 온도가 제1기준값을 초과하였으면 배가가스 온도의 과다 상승으로 인식하여 엔진 출력제한 제어 및 CPF의 재생을 중지시키는 과정, 엔진 출력 제한 제어에 의해 모델링된 배기가스 온도가 설정된 제2기준값 미만이면 엔진 출력 제한 제어를 해제하고, 조건이 충족되는 경우 CPF의 재생 제어를 실행하는 과정을 포함한다. 
       
     모델링, 람다센서, 디젤엔진, 터보차저, 배가가스 온도
Patent KR-20090048686-A (KR)
Inventor: JOO DAE SUNG
IPC: B01D35/00
Filed: 2007-11-12
Abstract: 본 발명은 물을 균등하게 분배할 수 있는 장치에 관한 것으로서, 기둥형 지지체를 그 위에 세울 수 있는 베이스; 상기 베이스 위에 세워지며 공간부를 형성하는 기둥형 지지체; 상기 기둥형 지지체 상부에 설치되는 유공판; 상기 유공판 위에 수평을 맞추어 설치되는 미세공극판용 프레임; 및 상기 미세공극판용 프레임에 결착되며, 합성수지 칩을 융착하여 얻어지는 미세공극판;을 포함하여 구성되며, 상방 또는 하방으로 물이 균등하게 분배되는 현저한 효과를 거둘 수 있다. 
       
     물 균등 분배장치, 베이스, 기둥형 지지체, 미세공극판
Patent KR-20090050555-A (KR)
Inventor: KIM JUN YEOB
IPC: G02C1/00
Filed: 2007-11-16
Abstract: 본 발명은 다 색상 자유무늬를 갖는 합성수지 안경 및 그 제조방법에 관한 것으로서, 합성수지계열(폴리카보나이트, 아세테이트 등, 이하 합성수지라 함 )소재로 형성되는 안경테, 다리, 팁 등, 안경 부품들을 금형 및 사출기를 통해 사출로 성형하는 과정에서 다양한 색상과 무늬가 형성된 안경과 상기 안경을 간단한 공정으로 제조하는 방법에 관한 것이다. 
     상기와 같은 목적을 달성하기 위한 본 발명의 다 색상 자유무늬를 갖는 합성수지 안경은 다양한 색상의 합성수지 소재가 용융된 상태에서 금형에 의해서 소정의 형상과 모양을 갖는 안경테, 다리, 팁 등, 안경 부품들이 성형되어 조립으로 완성되며, 다양한 색상의 합성수지 칩들을 사출기의 실린더 내부에서 용융시킨 다음, 직선운동을 하는 피스톤에 의해서 금형으로 압출하여 안경테, 다리, 팁 등, 안경 부품을 제조하는 것을 특징으로 하며,이상과 같은 본 발명에 의하면, 회전식 피스톤에 의한 사출방식으로 다양한 컬러를 갖는 안경제조가 불가능했던 것을 해결하여 다양한 색상의 합성수지 안경을 간단하게 제조하여 저렴하게 공급할 수 있기 때문에 소비자들의 욕구를 충족시킬 수 있는 효과가 있다. 
     또한 다양한 색상의 합성수지칩을 용융시켜 안경부품을 사출 성형하였기 때문에 안경부품의 외부와 내부 전체에 색상과 자유무늬가 형성으로 마모가 되더라도 색상과 무늬가 없어지지 않고 또 탈색되지 않는 고품질의 안경을 제공할 수 있어 대외 경쟁력을 향상시켜 경제적인 이득을 얻을 수 있는 등의 효과가 기대되는 발명 이다. 
       
     안경, 내면, 외면, 실린더, 합성수지 칩, 피스톤, 다양한 색상, 자유무늬.
Patent KR-20090053551-A (KR)
Inventor: OH HYE RAN
IPC: G02B9/12
Filed: 2007-11-23
Abstract: 초소형 촬상 광학계를 제공한다. 
     본 발명은, 제1 렌즈요소의 상측 면에 물체측 면이 접합되는 제2 렌즈요소 ; 및 상기 제2 렌즈요소의 상측 면에 물체측 면이 접합되는 제3 렌즈요소 ; 를 포함하여 전체적으로 양의 굴절력을 갖는 렌즈군을 포함하고, 상기 제1렌즈요소의 물체측 면과 상기 제2렌즈요소의 상측 면사이에 조리개를 구비하고, 상기 제1렌즈요소의 물체측 면과 상기 제3렌즈요소의 상측 면중 적어도 어느 하나의 면이 비구면으로 이루어지며, 상측면이 상측으로 볼록한 제3렌즈요소의 형상에 관하여 다음의 조건식 1을 만족한다.  
     [조건식 1] 0.5 < │r2│/f < 0.74 
     여기서, r2 : 제3렌즈요소의 상측면의 근축 곡률반경 
             f : 전체 광학계의 유효초점길이 
       
     촬상, 광학계, 렌즈, 개구조리개, 상면, 비구면
Patent KR-20090055200-A (KR)
Title: Inkjet printhead and method of ejecting ink using the same
Inventor: LEE YOU SEOP
IPC: B41J2/135
Filed: 2007-11-28
Abstract: An inkjet print head and an ink discharge method using the same are provided to discharge the ink inside the nozzle toward a third electrode. An inkjet print head comprises a flow path plate(110) in which a manifold(112) and a nozzle(122) are formed, first and second electrodes(131,132) which are formed in a flow path plate surrounding the nozzle, and third and fourth electrodes(141) which generate the electrostatic force between the first and second electrodes. The ink(101) is supplied through the manifold. The ink is discharged through the nozzle. The first and the second electrodes ionize the air between two electrode by using the applied voltage and generate a ionic wind.