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US 11,504,961 B2Granted
Method of operating a rotary printing press
AssigneeHeidelberger Druckmaschinen AG
InventorsMarcus Putzer, Hans Schadl
Life of this patent
Estimating the term…
Abstract
In a method for operating a rotary printing press, preferably a flexographic printing press that processes webs, disturbances of a rotating printing cylinder are detected and reduced by changing the printing speed. Here, the disturbances are detected at an actuating drive of the printing cylinder. This leads to a cost-efficient way of printing without disturbances.
Claims8
A method of operating a rotary printing press, the method comprising:
- providing a rotating printing cylinder with an actuating drive, the actuating drive comprising a spindle and a servomotor with a transducer;
- providing an impression cylinder associated with the rotating printing cylinder;
- adjusting, via the spindle, the position of the rotating printing cylinder relative to the impression cylinder and thereby controlling a contact pressure between the rotating printing cylinder and the impression cylinder;
- during an operation of the printing press, detecting disturbances of the rotating printing cylinder by monitoring the transducer of the actuating drive of the printing cylinder;
- when disturbances at the rotating printing cylinder are detected via the transducer of the actuating drive of the printing cylinder, changing a printing speed of the rotary printing press in order to reduce or eliminate the disturbances.
2 more elements
Dependencies are inferred from the claim text.