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US 8,943,964 B2Granted
Powdering device for a printing press and method for operating the powdering device
AssigneeHeidelberger Druckmaschinen AG
InventorsPeter Foerch, Claudius Haas, Markus Moehringer
Life of this patent
Estimating the term…
Abstract
A powdering device for a printing press includes a metering roller and a manifold. A plurality of injectors are provided downstream of the manifold in a conveying direction of the powder. The powdering device is operable in accordance with a method in which a total powder stream is subdivided into partial powder streams that are subsequently separately mixed with compressed air to create powder/air streams.
Claims7
A powdering device for a printing press, the powdering device comprising:
- a metering roller;
- a manifold conveying powder to said metering roller, said manifold having exits opening out onto said metering roller for subdividing a total powder stream into partial powder streams and configured for conveying powder onto said metering roller through said exits;
- a multiplicity of injectors disposed downstream of said manifold in a powder conveying direction, said injectors being disposed downstream of said metering roller in the powder conveying direction, and said metering roller being disposed between said manifold and said injectors, and said injectors being mixing injectors for separately mixing said partial powder streams with compressed air to create powder/air streams;
- and
- nozzle heads for ejecting the powder/air streams towards a printed sheet.
2 more elements
Dependencies are inferred from the claim text.