Heidelberger Druckmaschinen Ag

Stephan Ehrhardt

Klaus Auer

Bernd Maier

A method of operating a sheet-fed printing press includes storing various print jobs and/or associated setting values and process steps in a memory device to set up the printing press upon a job change. A computer implements or suggests settings or process steps of the printing press for a print job based on the job data of a print job and/or as a result of inputs by the operator. Before or immediately after a print job is completed, the computer generates a query requesting inputs that determine if the same print job requires further passes and if so, which passes are required and, based on the information input therein, implements only those settings on the printing press and/or initiates or suggests only those process steps that are necessary for the subsequent pass of the sheets that have already been printed.

Method for operating a printing press

An offset printing press and a method for cleaning inking units in offset printing presses include emptying and subsequently refilling ink fountains of individual inking units of the printing units with ink sequentially one after the other. Immediately after the emptying of a first ink fountain, a washing operation for an associated inking unit is started even before remaining ink fountains have been emptied. After a respective further one of the remaining ink fountains has been emptied, the washing operation for a respective further inking unit is started and refilling of the first ink fountain is started while washing operations for one or more of the further inking units are still running.

Method for cleaning inking units in offset printing presses

A method and a device for controlling a printing material processing machine (), which has at least one processing unit in which the positional and speed data of a printing substrate to be transported through the printing material processing machine are recorded, where, on the basis of the recorded positional and speed data, the instantaneous position of the printing substrate is calculated and stored in memory unit of the processing unit; in addition to the instantaneous position of a printing substrate to be transported through the printing material processing machine, additional command data being stored in the memory unit.

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Neulussheim, Germany

Stephan Ehrhardt