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    • 1. 发明授权
    • Screen printing press having longitudinal, lateral and angular screen
frame registration system and method
    • 丝网印刷机具有纵向,横向和角度的筛网框架配准系统和方法
    • US5777878A
    • 1998-07-07
    • US658025
    • 1996-06-04
    • Ivan B. HelmrichCharles C. Raney
    • Ivan B. HelmrichCharles C. Raney
    • B41F15/08B41F15/10B41F15/00B41F15/14B41F15/24B41F15/34
    • B41F15/10B41F15/085
    • A screen printing press is provided for printing on a web having defined, successive areas and indicia provided in predetermined positions relative to each of the defined areas. The press includes a base defining a work station, a screen supported on the base for movement between a printing position overlying the work station and an interrupted position, and a web handling assembly for advancing the web along a path of travel to successively feed the defined areas of the web toward the work station. A registration system successively positions the defined areas of the web in a desired predetermined relationship to the screen as successive defined areas are brought into a position to be printed. The registration system includes longitudinal, lateral and angular shifting mechanisms for adjusting the longitudinal, lateral and angular alignment between the screen and the web. Sensors are provided for sensing the correct positions and orientation of the indicia that are occupied when the defined areas of the web are in the predetermined relationship relative to the screen, and a controller is responsive to the sensors for controlling the longitudinal, lateral and angular shifting mechanisms to adjust the alignment between the screen and the web until the correct positions and orientation of the indicia are sensed.
    • 提供丝网印刷机用于在具有限定的连续区域的纸幅上打印,并且在相对于每个限定区域的预定位置处提供标记。 压力机包括限定工作站的基座,支撑在基座上的屏幕,用于在覆盖工作站的打印位置和中断位置之间移动的屏幕以及用于沿着行进路径推动纸幅的纸幅处理组件,以连续地馈送所定义的 网络向工作站的区域。 当连续限定的区域进入要打印的位置时,登记系统将所述幅材的限定区域以期望的预定关系顺序地定位在屏幕上。 配准系统包括纵向,横向和角度移动机构,用于调节筛网和腹板之间的纵向,横向和角度对齐。 提供传感器用于感测当幅材的限定区域相对于屏幕处于预定关系时所占据的标记的正确位置和方位,并且控制器响应于传感器来控制纵向,横向和角度位移 调整屏幕和纸幅之间的对准直到检测到标记的正确位置和取向的机构。