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    • 6. 发明授权
    • Printing press and method of operating same
    • 印刷机及其操作方法
    • US5471926A
    • 1995-12-05
    • US228136
    • 1994-04-14
    • Rudi JunghansMathias Zuber
    • Rudi JunghansMathias Zuber
    • B41F7/26B41L23/00
    • B41F7/26
    • A printing press and a method operating the same. The printing press includes: a frame; a plate cylinder being rotatably mounted on the frame; an inking unit for supplying ink to the plate cylinder. The inking unit comprises: an ink fountain for containing ink; a plurality of inking rollers; means for transferring ink between said ink fountain and said plurality of inking rollers; a plurality of ink applicator rollers for transferring ink between said plurality of inking rollers and said plate cylinder. The printing press further includes a dampening unit for supplying damping medium to said plate cylinder. The dampening unit comprises a form roller having an elastic outer cylindrical surface which can be engaged at the printing plate of a plate cylinder, a driven dampening distributor having a chromium outer cylindrical surface and being assigned to the form roller, and further dampening-unit rollers supplying the form roller with the dampening medium contained in a dampening-medium vessel. The dampening distributor is preferably provided with cups arranged close to each other and preferably featuring each a depth of approximately 20 micrometers, and, preferably, the ridges between the cups: are rounded off; permeate the dampening-medium film and the ink film on the form roller; and, under a certain contact pressure, are in contact with the outer cylindrical surface of the form roller and drive the form roller.
    • 印刷机及其操作方法。 印刷机包括:一个框架; 可旋转地安装在框架上的印版滚筒; 用于向印版滚筒供墨的上墨单元。 上墨单元包括:用于容纳墨水的墨斗; 多个上墨辊; 用于在所述墨斗和所述多个上墨辊之间转印墨水的装置; 用于在所述多个着墨辊和所述印版滚筒之间转印墨水的多个墨水给送辊。 印刷机还包括用于向所述印版滚筒供应阻尼介质的阻尼单元。 阻尼单元包括具有弹性外圆柱形表面的成形辊,该外圆柱形表面可以与印版滚筒的印版接合,具有铬外圆柱形表面并被分配给成形辊的从动阻尼分配器和另外的润版单元辊 向成形辊供应包含在阻尼介质容器中的润湿介质。 阻尼分配器优选地设置有彼此靠近布置的杯,并且优选地具有每个约20微米的深度,并且优选地,杯之间的脊被倒圆; 渗透介质膜和油墨膜在成型辊上; 并且在一定的接触压力下与成型辊的外圆柱形表面接触并驱动成形辊。