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US 8,757,061 B2Granted
Method for applying powder to a printed sheet and printing press for carrying out the method
AssigneeHeidelberger Druckmaschinen AG
InventorsReiner Goetz, Claudius Haas, Reiner Haas, Marius Stelter
Life of this patent
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Abstract
A method for applying powder to a printed sheet includes ejecting air flows from a nozzle bar. The air flows are set in such a way that the air flows which are ejected per meter length of the nozzle bar produce a resultant force acting on the printed sheet of from 0.5 newtons to 16 newtons. A printing press for carrying out the method is also provided.
Claims2
A method for applying powder to a printed sheet, the method comprising the following steps:
- ejecting air flows from a nozzle bar;
- setting the ejection of the air flows per meter length of the nozzle bar to produce a resultant force acting on the printed sheet of from 3.5 newtons to 10 newtons;
- transporting the printed sheet past the nozzle bar with a transport device including:
- a first chain conveyor having a first pair of endless chains carrying front gripper bars, and
- a second chain conveyor having a second pair of endless chains carrying rear gripper bars;
- and
- holding a front edge of the printed sheet with one of the front gripper bars and simultaneously holding a rear edge of the printed sheet with one of the rear gripper bars during transport.
4 more elements
Dependencies are inferred from the claim text.