Sheet-fed printing machine with a humidification device
AssigneeHeidelberger Druckmaschinen AG
InventorsChristoph Ruppaner, Claudius Haas, Markus Leva, Uwe Angst, Ulrich Fellenberg, Edmund Klein, Andreas Boettger, Sebastian Wilhelm, Peter Hachmann
Life of this patent
Estimating the term…
Abstract
A sheet-fed printing machine contains a printing unit, a drier, and a sheet handling device for transporting or guiding print sheets. The sheet handling device has an opening disposed downstream of the drier in the direction of transport. A humidification device for rehumidifying the print sheets is disposed in such a way that it rehumidifies the print sheets through the opening. The sheet handling device may contain a guide plate or several guide plates.
Claims14
A sheet-fed printing machine, comprising:
- a printing unit;
- a drier;
- a sheet guide for transporting or guiding print sheets, said sheet guide having an opening formed therein and disposed downstream of said drier in a direction of sheet transport;
- and
- a humidifier for rehumidifying the print sheets and disposed in such a way that said humidifier rehumidifies the print sheets through said opening, said humidifier having a format adjustment device for adapting a humidification width to a width of a respective format of the print sheets.
A sheet-fed printing machine, comprising:
- a printing unit;
- a drier;
- a sheet guide for transporting or guiding print sheets, said sheet guide having an opening formed therein and disposed downstream of said drier in a direction of sheet transport;
- and
- a humidifier for rehumidifying the print sheets and disposed in such a way that said humidifier rehumidifies the print sheets through said opening, said humidifier having a timing device for generating a spraying cycle.
A sheet-fed printing machine, comprising:
- a printing unit;
- a drier:
- a sheet guide for transporting or guiding print sheets, said sheet guide having an opening formed therein and disposed downstream of said drier in a direction of sheet transport;
- and
- a humidifier for rehumidifying the print sheets and disposed in such a way that said humidifier rehumidifies the print sheets through said opening, said humidifier having a spin tray.
A sheet-fed printing machine, comprising:
- a printing unit;
- a drier;
- a sheet guide for transporting or guiding print sheets, said sheet guide having an opening formed therein and disposed downstream of said drier in a direction of sheet transport, an opening width of said opening in the direction of transport is no more than 30% of a sheet length of a maximum processable format of the print sheets;
- and
- a humidifier for rehumidifying the print sheets and disposed in such a way that said humidifier rehumidifies the print sheets through said opening.
Dependencies are inferred from the claim text.