Heidelberger Druckmaschinen Ag

Jan Teubert

Alexander Knabe

Martin Greive

Jens Hieronymus

Eckehard Sommer

Jochen Körner

Armin Reisinger

An apparatus and a method for correct phase engagement of mechanically coupled rotatably drivable components in printing material processing machines, include a coupling for mechanically connecting at least two of the rotatably drivable components. The at least two rotatably drivable components are operated at a different rotational speed in a transmission ratio in a mechanically coupled state, and a control computer has access to the transmission ratio for controlling an engagement operation and taking the transmission ratio into consideration during the correct phase engagement.

Method for engagement of cylinders with different revolution rates in correct phase and sheet-fed rotary printing press having the cylinders

A method for changing printing plates in rotary printing presses, including a plurality of printing units each having a plate cylinder and a dedicated drive for driving the plate cylinder independently of an associated blanket cylinder in a respective printing unit, includes moving the respective blanket cylinder at a somewhat higher circumferential speed than the associated plate cylinder while conveying one or more printing plates out of the printing unit, at least in one operating mode, during a plate changing operation. A printing press and a controller are also provided.

Method for changing printing plates in rotary printing presses having a plurality of printing units, printing press and controller

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Heidelberg, Germany

Jan Teubert