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    • 5. 发明公开
    • Method and apparatus for electrode control in electro-coagulation printing
    • Verfahren und Vorrichtung zur Elektrodensteuerung bei einem Elektrokoagulationsdruckverfahren
    • EP1068951A1
    • 2001-01-17
    • EP00114170.4
    • 2000-07-12
    • YAMAHA CORPORATION
    • Sogo, AkiraNoro, MasaoMuroi, KunimasaToda, Koji
    • B41C1/10
    • B41C1/105Y10S101/29Y10S101/37
    • An electro-coagulation printer uses an electrode control unit to drive electrodes (22) which are aligned in proximity to a rotation drum (24) having a conductive ink film on its surface. The electrodes are respectively electrified to partially coagulate the conductive ink film to form ink dots on the surface of the rotation drum, so that the ink dots are transferred onto a paper. Herein, the electrode control unit receives print data (3) from a host device (2) by way of an interface (4). Gradation data representing gradation values for one line of the electrodes are created based on the print data and are output in a serial manner. The serial gradation data are converted to parallel data corresponding to the gradation values, which are held and controlled in output timing. That is, output timings of the gradation values are independently controlled based on correction information such that print positions of the ink dots are corrected in at least one of a paper-feed direction and an alignment direction of the electrodes. Based on the gradation values, pulse signals are generated to drive the electrodes respectively. Herein, each of the pulse signals consists of a number of pulses designated by the gradation value, or each of them consists of a single pulse whose pulse width depends on the gradation value. It is possible to differ the pulse signals from each other in phases. Thus, it is possible to print desired images on papers with a high quality and at a high speed.
    • 电凝式打印机使用电极控制单元来驱动在其表面上具有导电油墨膜的旋转滚筒(24)附近对齐的电极(22)。 电极分别带电以部分地凝结导电油墨膜,以在旋转滚筒的表面上形成墨点,使得墨点转印到纸上。 这里,电极控制单元通过接口(4)从主机(2)接收打印数据(3)。 基于打印数据创建表示一行电极的灰度值的灰度数据,并以串行方式输出。 串行灰度数据被转换为与输出定时保持和控制的灰度值对应的并行数据。 也就是说,基于校正信息独立地控制灰度值的输出定时,使得在电极的送纸方向和取向方向中的至少一个中校正墨点的打印位置。 基于灰度值,产生分别驱动电极的脉冲信号。 这里,每个脉冲信号由灰度值指定的多个脉冲组成,或者每个由脉冲宽度取决于灰度值的单个脉冲组成。 可以将脉冲信号彼此相位相差。 因此,可以以高质量和高速度在纸张上打印期望的图像。
    • 6. 发明公开
    • Electrocoagulation printing apparatus
    • 电凝打印设备
    • EP1043153A1
    • 2000-10-11
    • EP99106134.2
    • 1999-04-06
    • TOYO INK MANUFACTURING CO., LTD.
    • Hashimoto, Shigeto, Toyo Ink Manufacturing Co.,LtdOshida, Toshio, , Toyo Ink Manufacturing Co.,Ltd
    • B41C1/10
    • B41C1/105Y10S101/37
    • An electrocoagulation printing apparatus includes a cylindrical positive electrode, an ink supplying device, a printing head having negative electrodes forming dots of coagulated ink, a removing device for removing non-coagulated ink, a transfer device for bringing the dots of the coagulated ink into contact with an substrate and transferring the dots on the substrate, a gap measurement sensor, and gap control device. The gap measurement sensor measures the size of the gap between the positive electrode and the negative electrodes, and outputs the measured value to the gap control device. The gap control device changes the size of the gap by moving the negative electrodes with respect to a surface of the positive electrode such that the input measured value of the gap falls within a desired established range.
    • 一种电凝染打印装置包括圆柱形正电极,供墨装置,具有形成凝固油墨点的负电极的打印头,用于去除未凝结油墨的去除装置,用于使凝结油墨的点接触的转移装置 与衬底并在基底上传递点,间隙测量传感器和间隙控制装置。 间隙测量传感器测量正极和负极之间的间隙的大小,并将测量值输出到间隙控制装置。 间隙控制装置通过相对于正电极的表面移动负电极来改变间隙的尺寸,使得间隙的输入测量值落入期望的设定范围内。