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    • 9. 发明授权
    • Electrostatic write head for electronic printing press
    • 电子印刷机静电写头
    • US6160567A
    • 2000-12-12
    • US852970
    • 1997-05-08
    • Wolfgang Feist
    • Wolfgang Feist
    • B41J2/385B41J2/395B41J2/39
    • B41J2/395
    • An electrostatic write head for writing pixels on a print cylinder is disclosed in which a continuous wave radio-frequency source is applied to a radio-frequency electrode disposed on a first side of a dielectric body. A control electrode is disposed on the second side of the dielectric body. When the voltage at the radio-frequency electrode is sufficiently high, a plasma containing electrons, negatively charged ions and positively charged ions ignites near the second side of the dielectric body. While these conditions are maintained, a varying control signal is applied to the control electrode. When a print cylinder having a conducting reference electrode is brought near the plasma, the plasma contacts the surface of the print cylinder and causes it to become charged to a voltage which directly relates to the control signal, thus writing a charged pixel on the surface of the print cylinder.
    • 公开了一种用于在打印滚筒上写入像素的静电写入头,其中连续波射频源被施加到布置在电介质体的第一侧上的射频电极。 控制电极设置在电介质体的第二侧上。 当射频电极的电压足够高时,包含电子,带负电荷的离子和带正电荷的离子的等离子在电介质体的第二面附近点燃。 当保持这些条件时,将变化的控制信号施加到控制电极。 当具有导电参比电极的印刷滚筒靠近等离子体时,等离子体接触印刷滚筒的表面并使其被充电到与控制信号直接相关的电压,从而将带电像素写入到 印刷滚筒。