Method and apparatus for reversing sheet material in sheet-processing machines
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United States of America Patent
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May 25, 2004
Grant Date -
Jan 30, 2003
app pub date -
Jul 30, 2002
filing date -
Jul 30, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and an apparatus for reversing sheet material in a sheet-processing machine having at least two printing units, a reversing drum with a gripper system, and an impression cylinder that can be operated as a storage drum in perfecting mode and to which a further gripper system for one edge of the sheet material is assigned. In perfecting mode, one of the edges of the sheet material is gripped at an angular offset before the transfer centerline between the reversing drum and the storage drum, before the edge of the sheet material fixed to the storage drum is released.
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