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    • 65. 发明授权
    • System and method to program a printing form
    • 编制打印格式的系统和方法
    • US5194881A
    • 1993-03-16
    • US776623
    • 1991-10-15
    • Alfred Hirt
    • Alfred Hirt
    • B41C1/10B41N1/00G11B7/00G11B7/0055G11B7/30
    • B41C1/1058B41N1/006
    • To program or selectively image or erase a printing form (9) of ferroelectric material, in which the state of polarization of discrete areas of the printing form is controlled, utilizes an electron beam (12) generated by an electron gun (1, 3) which is impinged against a surface area (30) of the ferroelectric printing form. The beam is controlled in accordance with an image to be recorded, for subsequent printing, on the printing form; it is directed to the ferroelectric material by an electron beam focussing and accelerating system, for example similar to the system used in a television camera. The printing form (9) can be sealed with respect to an evacuated electron gun by a slide seal (14, 15) with a vacuum lock, or by a ferrofluidic vacuum lock (18, 20); or the electron gun can be closed by a Lenard window, or an end plate (27) with micro channels or micro ducts (26) therein. The intensity of the beam can be controlled by a suitable image control unit (32a).
    • 为了编程或选择性地图像或擦除其中控制打印形式的离散区域的偏振状态的铁电材料的打印形式(9)利用由电子枪(1,3)产生的电子束(12) 其撞击铁电印刷形式的表面区域(30)。 根据要记录的图像控制光​​束,以便随后打印在打印表格上; 它通过电子束聚焦和加速系统被引导到铁电材料,例如类似于电视摄像机中使用的系统。 打印形式(9)可以通过具有真空锁定的滑动密封件(14,15)或通过铁磁真空锁(18,20)相对于抽真空的电子枪进行密封。 或者电子枪可以由Lenard窗口或其中具有微通道或微通道(26)的端板(27)封闭。 光束的强度可以由合适的图像控制单元(32a)控制。