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    • 1. 发明授权
    • Apparatus for and method of driving multi-nozzle piezo-inkjet head based on digital grayscale
    • 基于数字灰度驱动多喷嘴压电喷墨头的装置和方法
    • US08721016B2
    • 2014-05-13
    • US13611186
    • 2012-09-12
    • Byung Hun KimHwa Sun Lee
    • Byung Hun KimHwa Sun Lee
    • B41J29/38
    • B41J2/04581B41J2/04561B41J2/0459B41J2/04593
    • 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.
    • 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。
    • 2. 发明申请
    • DRIVER FOR INKJET HEAD
    • 驱动喷头
    • US20130106933A1
    • 2013-05-02
    • US13358115
    • 2012-01-25
    • Byung Hun KIM
    • Byung Hun KIM
    • B41J29/38
    • B41J2/04541B41J2/04546B41J2/0455B41J2/04581B41J2/14201B41J2202/12
    • There is provided a driver for an inkjet head, capable of smoothly driving the inkjet head. The driver for an inkjet head includes: an amplifying unit having a plurality of amplifiers individually outputting signals having voltage levels amplified in accordance with a predetermined gain in a predetermined cycle; a coupling unit coupling the signals outputted from the plurality of amplifiers as a single driving signal in accordance with a control signal; a controlling unit controlling the coupling of signals performed by the coupling unit; and a switching unit switching a signal transmission path through which the single driving signal is transmitted to an inkjet head.
    • 提供了一种能够平滑地驱动喷墨头的用于喷墨头的驱动器。 用于喷墨头的驱动器包括:放大单元,具有多个放大器,其以预定周期单独地输出具有根据预定增益放大的电压电平的信号; 耦合单元,根据控制信号将从多个放大器输出的信号作为单个驱动信号耦合; 控制单元,控制由所述耦合单元执行的信号的耦合; 以及切换单元,其将单个驱动信号通过该信号传输路径切换到喷墨头。
    • 3. 发明申请
    • DEVICE AND METHOD FOR MANAGING PIEZO INKJET HEAD
    • 用于管理喷墨头的装置和方法
    • US20120293576A1
    • 2012-11-22
    • US13448233
    • 2012-04-16
    • Byung Hun KimHyun Seok Lee
    • Byung Hun KimHyun Seok Lee
    • B41J29/38
    • B41J2/04581B41J2/0451B41J2/04541B41J2/04555B41J2002/14354
    • A device and a method for managing a piezo inkjet head. The device includes: a piezo actuator connected to an inkjet head to generate pressure; a driver that controls driving of the piezo actuator; a sensing resistor connected between the driver and the piezo actuator, a signal amplifier connected across the sensing resistor to amplify the signal applied to the sensing resistor; a signal processor that removes noise of the signal output from the signal amplifier; a controller that determines a signal passing through the signal processor as a reference signal in a state in which bubbles are not introduced into the inkjet head; and a storage unit that stores the signal determined as the reference signal in the controller. The controller calculates a difference between the signal passing through the signal processor and the reference signal to generate a detection signal and determine a state of the inkjet head.
    • 一种用于管理压电喷墨头的装置和方法。 该装置包括:连接到喷墨头以产生压力的压电致动器; 控制压电致动器的驱动的驱动器; 连接在驱动器和压电致动器之间的感测电阻器,连接在感测电阻器两端的信号放大器,用于放大施加到感测电阻器的信号; 信号处理器,其消除从信号放大器输出的信号的噪声; 在气泡未被引入喷墨头的状态下,将通过信号处理器的信号作为参考信号确定的控制器; 以及存储单元,其将被确定为参考信号的信号存储在控制器中。 控制器计算通过信号处理器的信号与参考信号之间的差异,以产生检测信号并确定喷墨头的状态。
    • 4. 发明授权
    • Method for fabricating a biochip using the high density carbon nanotube film or pattern
    • 使用高密度碳纳米管膜或图案制造生物芯片的方法
    • US08067341B2
    • 2011-11-29
    • US10805044
    • 2004-03-19
    • Hee Tae JungSang Yup LeeDae Hwan JungByung Hun KimYoung Koan Ko
    • Hee Tae JungSang Yup LeeDae Hwan JungByung Hun KimYoung Koan Ko
    • C40B60/00
    • G01N33/54353B82Y30/00G01N33/551Y10S977/742
    • Carbon nanotube (CNT) films, patterns and biochips and methods of making the same are provided. Such a biochip comprises a bio-receptor attached by means of an exposed chemical functional group on a surface of a high density CNT film or pattern produced by repeated lamination of CNTs on a substrate with exposed amine groups. Various types of CNT-biochips may be fabricated by bonding of bio-receptors to a CNT pattern (or film) containing exposed carboxyl groups or modified by various chemical functional groups. Further, the CNT-biochip may be used to measure an electrical or electrochemical signal using both conductor and semiconductor properties of the CNT, thereby not needing labeling. Upon fluorescent measurement of DNA hybridization using such a CNT-DNA chip it is possible to show more distinct signals useful for genotyping, mutation detection, pathogen identification and the like.
    • 提供了碳纳米管(CNT)膜,图案和生物芯片及其制造方法。 这样的生物芯片包括通过暴露的化学官能团在高密度CNT膜的表面上附着的生物受体或通过在具有暴露的胺基的基底上重复层压CNT而产生的图案。 可以通过将生物受体结合到包含暴露的羧基或被各种化学官能团修饰的CNT图案(或膜)来制造各种类型的CNT-生物芯片。 此外,CNT-生物芯片可以用于使用CNT的导体和半导体性质来测量电或电化学信号,从而不需要标记。 在使用这种CNT-DNA芯片进行DNA杂交的荧光测量时,可能显示更有用于基因分型,突变检测,病原体鉴定等的不同信号。
    • 9. 发明授权
    • Method and apparatus to detect print location error using print dots
    • 使用打印点检测打印位置错误的方法和装置
    • US07959250B2
    • 2011-06-14
    • US11770972
    • 2007-06-29
    • Byung-Hun Kim
    • Byung-Hun Kim
    • B41J29/393
    • B41J2/2139B41J2/2142
    • A method and apparatus to detect a print location error using print dots. The method includes transforming values of pixels of a first image into frequency domains, where a plurality of print dots are arranged at predetermined intervals in the first image; transforming values of pixels of a second image, where the second image is obtained by actually printing the first image using an inkjet head; detecting 2D (2-dimensional) cross power spectral densities of the frequency-domain values of the first and second images; calculating 2D cross correlation values by transforming the 2D cross power spectral densities into time domain; and detecting error coordinates representing the distances between the print dots of the second image and the first image from the time-domain cross correlation values. Accordingly, it is possible to perform coordinates compensation by detecting errors between ideal print dots and actually printed print dots so that an image sensor can move exactly to print dots in order to sense print dots sprayed from an inkjet head that is newly exchanged in an image forming apparatus.
    • 使用打印点检测打印位置错误的方法和装置。 该方法包括将第一图像的像素的值变换为频域,其中多个打印点以第一图像中的预定间隔排列; 变换第二图像的像素值,其中通过使用喷墨头实际打印第一图像来获得第二图像; 检测所述第一和第二图像的频域值的2D(2维)交叉功率谱密度; 通过将2D交叉功率谱密度转换为时域来计算2D互相关值; 以及从时域互相关值检测表示第二图像的打印点与第一图像之间的距离的误差坐标。 因此,可以通过检测理想的打印点和实际打印的打印点之间的误差来执行坐标补偿,使得图像传感器可以精确地移动到打印点,以便感测从图像中新交换的喷墨头喷射的打印点 成型装置。