Combined rotary web-fed printing machine, especially for the printing of
securities
    12.
    发明授权
    Combined rotary web-fed printing machine, especially for the printing of securities 失效
    组合式旋转卷筒纸印刷机,特别适用于打印证券

    公开(公告)号:US5062360A

    公开(公告)日:1991-11-05

    申请号:US561698

    申请日:1990-08-01

    摘要: The rotary web-fed printing machine has three successively arranged printing units, namely one offset and two intaglio printing units which are all of a similar design to sheet-fed printing units and in which the cylinders (2, 3) forming the printing nip have a plurality of sectors separated by cylinder pits (2a, 3b). Each printing unit has, in front of the printing nip, a first paper-web store (29) and an intermittently controllable first draw-roller unit (30) and, after the printing nip, an intermittently controllable second draw-roller unit (31) and second paper-web store (32), the draw-roller units (30, 31) which have only one suction roller being controllable for the forward and backward movement of the web (P) by means of individually regulated drives (30a, 31a) and at the same time serving for the register check. In front of the first paper-web store (29) of the first printing unit (A), between the printing units within the portions limited by the respective paper-web stores and behind the second paper-web store of the last printing unit, the web (P) is moved uniformly by continuously driven draw-roller arrangements (27), whereas during the run through the printing nip the paper-web transport takes place in the pilgrim-step mode.

    摘要翻译: 旋转卷筒纸印刷机具有三个连续布置的印刷单元,即一个偏移和两个凹版印刷单元,其全部与单张纸印刷单元相似,并且其中形成印刷辊隙的圆柱体(2,3) 由圆柱凹坑(2a,3b)隔开的多个扇区。 每个印刷单元在印刷压区之前具有第一纸幅存储器(29)和可间歇控制的第一牵引辊单元(30),并且在印刷压区之后具有间歇可控的第二牵引辊单元(31) )和第二纸幅存储器(32)中,仅具有一个吸辊的牵引辊单元(30,31)可通过单独调节的驱动器(30a, 31a),同时用于登记检查。 在第一打印单元(A)的第一纸幅存储器(29)的前面,在由相应的纸幅存储器限制的部分中的打印单元之间以及在最后一个打印单元的第二纸幅存储器之后的打印单元之间, 纸幅(P)通过连续驱动的牵引辊装置(27)均匀地移动,而在通过打印压区的运行期间,纸幅传送以朝圣者步进模式进行。