公开(公告)号：US08721016B2

公开(公告)日：2014-05-13

申请号：US13611186

申请日：2012-09-12

Applicant: Byung Hun Kim ,  Hwa Sun Lee

Inventor： Byung Hun Kim ,  Hwa Sun Lee

IPC: B41J29/38

CPC classification number: B41J2/04581 ,  B41J2/04561 ,  B41J2/0459 ,  B41J2/04593

Abstract: There is provided an apparatus for and method of driving a multi-nozzle piezo-inkjet head based on a digital grayscale, the apparatus including: a control unit providing a pulse data signal having at least one pulse waveform according to graphic image data, controlling a voltage variation according to a frequency response characteristic of the multi-nozzle piezo inkjet head, and controlling a voltage amplification, so as to eject droplets of ink at a previously set jetting frequency according to the graphic image data; a variable voltage supply unit generating a varied operating voltage by varying a level of a previously set direct current voltage; and an amplification circuit unit generating a voltage driving waveform including at least one pulse waveform having the level of the varied operating voltage, and supplying the voltage driving waveform to the multi-nozzle piezo inkjet head.

Abstract translation: 提供了一种基于数字灰阶驱动多喷嘴压电喷墨头的装置和方法，该装置包括：控制单元，根据图形图像数据提供具有至少一个脉冲波形的脉冲数据信号，控制一个 根据多喷嘴压电喷墨头的频率响应特性的电压变化，并控制电压放大，以根据图形图像数据以预先设定的喷射频率喷射墨滴; 可变电压供给单元，其通过改变预先设定的直流电压的电平来产生变化的工作电压; 以及放大电路单元，其生成包括具有变化的工作电压的电平的至少一个脉冲波形的电压驱动波形，以及将电压驱动波形提供给多喷嘴压电喷墨头。

公开(公告)号：US20130342610A1

公开(公告)日：2013-12-26

申请号：US13609580

申请日：2012-09-11

Applicant: Tae Kyung LEE ,  Pil Joong Kang ,  Jae Chang Lee ,  Hwa Sun Lee

Inventor： Tae Kyung LEE ,  Pil Joong Kang ,  Jae Chang Lee ,  Hwa Sun Lee

IPC: B41J2/045 ,  H01L41/22 ,  H01L41/047

CPC classification number: B41J2/14233 ,  B41J2/161 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2002/14241 ,  B41J2002/14403 ,  B41J2002/14491 ,  H01L41/0475 ,  H01L41/0973 ,  H01L41/317 ,  Y10T29/42

Abstract: There are provided a piezoelectric actuator, an inkjet head assembly, and a method of manufacturing the same. The piezoelectric actuator includes upper and lower electrodes providing a driving voltage; and a piezoelectric body provided between the upper and lower electrodes and providing driving force to ink within each of a plurality of pressure chambers provided in an inkjet head, wherein the piezoelectric body includes branch portions separately provided on an upper portion of each of the plurality of pressure chambers and a large area portion connected to one end of each of the plurality of branch portions and integrally formed, and a connective electrode pattern is provided on a portion of each of the upper electrodes corresponding to the large area portion.

Abstract translation: 提供了压电致动器，喷墨头组件及其制造方法。 压电致动器包括提供驱动电压的上电极和下电极; 以及压电体，设置在所述上​​下电极之间，并且在设置在喷墨头中的多个压力室中的每一个内提供驱动力，其中所述压电体包括分开设置在所述多个 压力室和大面积部分连接到所述多个分支部分中的每一个的一端并整体形成，并且连接电极图案设置在每个所述上部电极对应于所述大面积部分的部分上。

公开(公告)号：US08603329B2

公开(公告)日：2013-12-10

申请号：US13054413

申请日：2009-04-27

Applicant: Dae Hwan Rhu ,  Yeong Ki Yeo ,  Se Wook Seo ,  Yong June Yune ,  Bong Choel Choi ,  Byung Suk Lee ,  Hwa Sun Lee

Inventor： Dae Hwan Rhu ,  Yeong Ki Yeo ,  Se Wook Seo ,  Yong June Yune ,  Bong Choel Choi ,  Byung Suk Lee ,  Hwa Sun Lee

IPC: C02F3/06 ,  C02F3/08 ,  C02F3/30 ,  C02F1/52 ,  C02F101/16

CPC classification number: C02F3/06 ,  C02F1/52 ,  C02F3/087 ,  C02F3/1215 ,  C02F3/301 ,  C02F3/302 ,  C02F2101/105 ,  C02F2101/16 ,  C02F2101/30 ,  C02F2203/00 ,  C02F2305/06 ,  Y02W10/15 ,  Y10S210/903

Abstract: A wastewater treatment apparatus of the present invention is configured to biologically filter wastewater through multimedia by consecutively performing two stages (the first and second stages) for a multimedia biological filtration process. A carbon source and coagulant are respectively injected during the first and second multimedia biological filtration processes. The first stage multimedia biological filtration process is carried out in anoxic conditions and the second stage multimedia biological filtration process is carried out in aerobic conditions. The media for the first and second stage biological filtration processes are arranged in large-middle-middle large-small size. Thus, the present invention can secure excellent treated water while minimizing loss of water-head by maximizing reflux capability of solids.

Abstract translation: 本发明的污水处理装置被构造成通过连续地进行多级生物过滤处理的两个阶段（第一和第二阶段）来生物过滤废水。 在第一和第二多媒体生物过滤过程中分别注入碳源和凝结剂。 第一阶段多媒体生物过滤过程在缺氧条件下进行，第二阶段多媒体生物过滤过程在有氧条件下进行。 第一和第二阶段生物过滤工艺的介质排列成大中大中小尺寸。 因此，本发明可以确保优异的处理水，同时通过最大化固体的回流能力来最小化水头的损失。

公开(公告)号：US20120062629A1

公开(公告)日：2012-03-15

申请号：US12929661

申请日：2011-02-07

Applicant: Young Jae Kim ,  Hwa Sun Lee ,  Jae Woo Joung

Inventor： Young Jae Kim ,  Hwa Sun Lee ,  Jae Woo Joung

IPC: B41J29/38

CPC classification number: B41J2/04508 ,  B41J2/04581 ,  B41J2/04588

Abstract: Disclosed herein are a piezo-electric inkjet print head and an apparatus for driving the print head. The piezo-electric inkjet print head includes: a pressure chamber; a piezo-electric actuator applying a driving force for discharging ink to the pressure chamber; and a pulse applying unit applying a driving pulse to the piezo-electric actuator. The exemplary embodiment of the present invention can obtain the stable discharge characteristics even at the time of discharging at a high frequency of 30 kHz or more by forming the driving waveform of the inkjet head under the condition of measuring the unique vibration period owned by the inkjet head and simultaneously generating constructive interference and destructive interference against the vibrations.

Abstract translation: 这里公开了压电喷墨打印头和用于驱动打印头的装置。 压电喷墨打印头包括：压力室; 施加用于将油墨排出到压力室的驱动力的压电致动器; 以及向压电致动器施加驱动脉冲的脉冲施加单元。 本发明的示例性实施例，即使在以30kHz以上的高频率放电时，也可以通过在测量喷墨头所属的独特振动周期的条件下形成喷墨头的驱动波形，来获得稳定的放电特性 并且同时产生对振动的建设性干扰和破坏性干扰。

公开(公告)号：US20110148995A1

公开(公告)日：2011-06-23

申请号：US12923097

申请日：2010-09-01

Applicant: Hwa Sun Lee ,  Seung Joo Shin ,  Seung Mo Lim ,  Jae Chang Lee ,  Tae Kyung Lee

Inventor： Hwa Sun Lee ,  Seung Joo Shin ,  Seung Mo Lim ,  Jae Chang Lee ,  Tae Kyung Lee

IPC: B41J2/045

CPC classification number: B41J2/14233 ,  B41J2002/14403 ,  B41J2002/14491

Abstract: There is provided an inkjet print head including: a head plate having nozzles arranged in a length direction, in which each of the nozzles ejects ink therethrough from a side surface of the head plate; an ink inlet provided in the lower portion of the head plate and drawing ink therethrough; a pressure chamber storing the ink drawn in through the ink inlet and communicating with the nozzle; and a piezoelectric element supplying the pressure chamber with driving force in a direction perpendicular to a direction of the ink ejected through the nozzle communicating with the pressure chamber and disposed on the pressure chamber having a membrane interposed therebetween.

Abstract translation: 提供了一种喷墨打印头，包括：头板，其具有沿长度方向布置的喷嘴，其中每个喷嘴从头板的侧表面喷射墨水; 墨水入口，设置在头板的下部，并通过其吸墨; 存储通过所述墨入口吸入并与所述喷嘴连通的墨的压力室; 以及压电元件，其向与压力室连通的喷嘴喷射的墨水的方向垂直的方向供给压力室，并设置在具有隔膜的压力室上。

公开(公告)号：US07857433B2

公开(公告)日：2010-12-28

申请号：US11471487

申请日：2006-06-21

Applicant: Jae-woo Chung ,  Hwa-sun Lee ,  Ji-hoon Kim

Inventor： Jae-woo Chung ,  Hwa-sun Lee ,  Ji-hoon Kim

IPC: B41J2/045

CPC classification number: B41J2/055 ,  B41J2/14233

Abstract: A piezoelectric inkjet printhead includes a fluid path forming substrate having a pressure chamber, a piezoelectric actuator formed on the fluid path forming substrate to provide a drive force to the pressure chamber to eject ink, and a damping layer formed on the piezoelectric actuator to dampen a residual vibration of the piezoelectric actuator.

Abstract translation: 压电喷墨打印头包括具有压力室的流体路径形成基板，形成在流体路径形成基板上的压电致动器，以向压力室喷射墨水的驱动力，以及形成在压电致动器上的阻尼层， 压电致动器的残余振动。

公开(公告)号：US20100146756A1

公开(公告)日：2010-06-17

申请号：US12712442

申请日：2010-02-25

Applicant: Tae-kyung LEE ,  Jae-woo Chung ,  Kyo-yeol Lee ,  Hwa-sun Lee ,  Seung-mo Lim ,  Jae-chang Lee

Inventor： Tae-kyung LEE ,  Jae-woo Chung ,  Kyo-yeol Lee ,  Hwa-sun Lee ,  Seung-mo Lim ,  Jae-chang Lee

IPC: H01L41/22

CPC classification number: B41J2/14233 ,  B41J2002/14491 ,  Y10T29/42 ,  Y10T29/49002 ,  Y10T29/49005 ,  Y10T29/4908

Abstract: A piezoelectric actuator of an inkjet head and a method of forming the piezoelectric actuator. The piezoelectric actuator is formed on a vibration plate to provide a driving force to each of a plurality of pressure chambers. The piezoelectric actuator includes a lower electrode formed on the vibration plate, a piezoelectric layer formed on the lower electrode at a position corresponding to each of the pressure chambers, a supporting pad formed on the lower electrode, the supporting pad contacting one end of the piezoelectric layer and extending away from the one end of the piezoelectric layer, and an upper electrode extending from a top surface of the piezoelectric layer to a top surface of the supporting pad. The upper electrode is bonded to a driving circuit above the supporting pad to receive a voltage from the driving circuit. The piezoelectric layer may have substantially the same length as the pressure chamber. The supporting pad may be formed of a photosensitive polymer and may have substantially the same height as the piezoelectric layer. The upper electrode may include a first portion formed on the piezoelectric layer and a second portion formed on the supporting pad, and the second portion may be wider than the first portion.

Abstract translation: 喷墨头的压电致动器和形成压电致动器的方法。 压电致动器形成在振动板上以向多个压力室中的每一个提供驱动力。 压电致动器包括形成在振动板上的下电极，形成在下电极上的与每个压力室对应的位置处的压电层，形成在下电极上的支撑焊盘，支撑焊盘接触压电体的一端 并且离开压电层的一端延伸，以及从压电层的顶表面延伸到支撑衬垫的顶表面的上电极。 上电极接合到支撑焊盘上方的驱动电路，以接收来自驱动电路的电压。 压电层可以具有与压力室大致相同的长度。 支撑垫可以由光敏聚合物形成，并且可以具有与压电层基本相同的高度。 上部电极可以包括形成在压电层上的第一部分和形成在支撑垫上的第二部分，并且第二部分可以比第一部分更宽。

公开(公告)号：US07722166B2

公开(公告)日：2010-05-25

申请号：US11475141

申请日：2006-06-27

Applicant: Hwa-sun Lee ,  Kyu-yeol Lee ,  Tao-kyung Lee ,  Chang-youl Moon ,  Jae-woo Chung

Inventor： Hwa-sun Lee ,  Kyu-yeol Lee ,  Tao-kyung Lee ,  Chang-youl Moon ,  Jae-woo Chung

IPC: B41J2/045

CPC classification number: B41J2/14233

Abstract: An inkjet printhead and a method of driving the inkjet printhead include a flow channel substrate having a pressure chamber, and a piezoelectric actuator formed on the flow channel substrate to apply a driving force to the pressure chamber to eject ink. The piezoelectric actuator includes a piezoelectric layer formed on the flow channel substrate to correspond to the pressure chamber, and a plurality of common electrodes and a plurality of driving electrodes alternately arranged in a length direction of the piezoelectric layer.

Abstract translation: 喷墨打印头和驱动喷墨打印头的方法包括：具有压力室的流路基板和形成在流路基板上的压电致动器，用于向压力室施加驱动力以喷射油墨。 压电致动器包括形成在流路基板上以对应于压力室的压电层，以及沿压电层的长度方向交替布置的多个公共电极和多个驱动电极。

公开(公告)号：US20080122319A1

公开(公告)日：2008-05-29

申请号：US11877717

申请日：2007-10-24

Applicant: Kyo-yeol LEE ,  Hwa-sun Lee ,  Seung-mo Lim ,  Tae-kyung Lee ,  Jae-woo Chung

Inventor： Kyo-yeol LEE ,  Hwa-sun Lee ,  Seung-mo Lim ,  Tae-kyung Lee ,  Jae-woo Chung

IPC: H01L41/24 ,  B05D5/12 ,  H01L41/187

CPC classification number: H01L41/43 ,  H01L41/0815 ,  H01L41/319

Abstract: A method of forming a high density thick piezoelectric layer and a piezoelectric device the same. The method of forming the thick piezoelectric layer includes: forming a seed layer on a substrate by coating a sol including a piezoelectric material; primary heat-treating the seed layer; forming the thick piezoelectric layer by coating a paste that includes a piezoelectric material on the seed layer using a screen printing method; and secondary heat-treating the thick piezoelectric layer at a temperature higher than the primary heat-treating temperature. The piezoelectric material included in the sol has a composition identical or similar to the composition of the piezoelectric material included in the paste. The density of the thick piezoelectric layer is increased by particles of the piezoelectric material that penetrate into the thick piezoelectric layer from the seed layer in the secondary heat-treating, and thus, a high density thick piezoelectric layer can be formed.

Abstract translation: 形成高密度厚压电层的方法及其压电装置。 形成厚压电层的方法包括：通过涂布包括压电材料的溶胶在基板上形成种子层; 初级热处理种子层; 通过使用丝网印刷法在种子层上涂布包含压电材料的糊料来形成厚的压电层; 并且在比第一热处理温度高的温度下对厚的压电层进行二次热处理。 包含在溶胶中的压电材料具有与糊料中包含的压电材料的组成相同或相似的组成。 通过在二次热处理中从种子层渗透到厚压电体层中的压电体的粒子，能够增加厚的压电体层的密度，能够形成高密度的厚的压电体层。

公开(公告)号：US20070176979A1

公开(公告)日：2007-08-02

申请号：US11471487

申请日：2006-06-21

Applicant: Jae-woo Chung ,  Hwa-sun Lee ,  Ji-hoon Kim

Inventor： Jae-woo Chung ,  Hwa-sun Lee ,  Ji-hoon Kim

IPC: B41J2/045

CPC classification number: B41J2/055 ,  B41J2/14233

Abstract: A piezoelectric inkjet printhead includes a fluid path forming substrate having a pressure chamber, a piezoelectric actuator formed on the fluid path forming substrate to provide a drive force to the pressure chamber to eject ink, and a damping layer formed on the piezoelectric actuator to dampen a residual vibration of the piezoelectric actuator.

Abstract translation: 压电喷墨打印头包括具有压力室的流体路径形成基板，形成在流体路径形成基板上的压电致动器，以向压力室喷射墨水的驱动力，以及形成在压电致动器上的阻尼层， 压电致动器的残余振动。