Sheet-fed printing machine and printing unit in a sheet-fed printing machine
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United States of America Patent
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Sep 26, 2017
Grant Date -
Oct 20, 2016
app pub date -
Apr 20, 2016
filing date -
Apr 20, 2015
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A printing unit in a sheet-fed printing machine includes a printing cylinder, an upstream transfer cylinder and a downstream transfer cylinder. The transfer cylinders each include a device for decelerating/accelerating a sheet. The device, in particular, includes at least one gripper bar being movable in a substantially radial direction to change the tangential speed of the gripper bar and thus of the sheet. A printing unit of this construction allows the sheets to be transported at a lower speed and at a shorter distance from one another during the printing process, resulting in a better print quality and a higher throughput of the machine. A sheet-fed printing machine including such a printing unit is also provided.
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