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US 7,607,390 B2Granted
Printing press and method for operating the same
AssigneeHeidelberger Druckmaschinen AG
InventorsMichael Donath, Udo Greulich, Dieter Huber, Jürgen Michels, Dieter Schaffrath, Wolfgang Schönberger, Bernhard Schwaab, Michael Thielemann
Life of this patent
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Abstract
A printing press includes an anilox inking unit with an engraved roller and a doctor-type ink fountain. At least one stirring element projects into the doctor-type ink fountain.
Claims1
A method for operating a printing press, the method comprising the following steps:
- providing an anilox inking unit having an engraved roller and a doctor-type ink fountain;
- providing a printing ink supply in the ink fountain;
- forming a roller of ink in the printing ink supply driven by a rotation of the engraved roller;
- and
- stirring the printing ink supply in the doctor-type ink fountain with a stirring element reaching at least into the roller of ink to minimize small air bubbles in the printing ink supply;
- moving the stirring element back and forth along the doctor-type ink fountain so quickly that, at a specific machine speed, the stirring element executes a complete back and forth movement for at most five sheets printed in the printing press.
3 more elements
Dependencies are inferred from the claim text.