公开(公告)号：US3740140A

公开(公告)日：1973-06-19

申请号：US3740140D

申请日：1969-08-18

申请人： EXTEK INC

发明人： WOLF M ,  BEISPEL R

IPC分类号： G03B27/20 ,  G03B27/30

CPC分类号： G03B27/20 ,  G03B27/303

摘要： A method and apparatus for continuous contact printing from a moving master strip onto a moving duplicate strip of lightsensitive material. A vacuum is applied to the inner or facing surfaces of the master and duplicate strips to keep them in register with each other by withdrawing air from the space between them. Air is so withdrawn either in an entrance region before the longitudinally moving strips come into close proximity with each other, or in an exit region beyond which the moving strips begin to diverge from each other. At least some of the air that is withdrawn from the space between the strips is caused to leave that space along a path generally parallel to the direction of strip movement. The vacuum may be applied through a perforated wedge which guides the strips into close proximity with each other.

摘要翻译： 一种用于从移动的母带连续接触印刷到移动的感光材料的重复条上的方法和装置。 通过从它们之间的空间抽出空气，将真空施加到主和复制条的内表面或相对表面，以使它们彼此对准。 在纵向移动的条彼此紧密接近之前，或在出口区域中移动的条带开始彼此分开，空气在入口区域被如此撤回。 从条带之间的空间中抽出的至少一些空气被引导沿着大致平行于条移动方向的路径离开该空间。 真空可以通过将条带彼此紧密接合的穿孔楔形件施加。