Koenig & Bauer-Aktiengesellschaft

Stefan Budach

Harald Willeke

Thomas Türke

Volker Lohweg

Andreas Ewald Heinrich Bernard

Carsten Diederichs

Bernd Rüdiger Stöber

Steven Flemming

Jörn Sacher

Felix Hartmann

Bernd Stöber

Jens Lochmüller

Gero Kosel

Martina Noack

Harald Heinz Peter Jeschonneck

Andreas Birkenfeld

Michael KÖLLMANN

A control station of a printing machine has at least one surface for receiving a sheet-like printing substrate, a measuring device for measuring a measurement variable of the sheet-like printing substrate on the surface, at least one camera for capturing at least one gesture performed by a person at the control station, and an image-processing device for processing and evaluating images captured by the camera. The measuring device has a measuring beam extending above the sheet-like printing substrate. The measuring beam of the measuring device can be moved over the sheet-type printing substrate on the surface. The camera which captures each at least one gesture, is arranged in or on the movable measuring beam. The measuring beam is driven by a controlled or by an at least controllable motor in order to carry out the movement. Controlling of the motor of the measuring beam is actuated by at least one gesture performed by the person in a capturing region of the camera and captured by the camera.

Control console of a printing machine

The plausibility of at least one measured value, that is determined in a printing press, and that includes a density of an ink applied to a stock, is assessed. The stock is conveyed through the printing press and the ink is applied to the stock in several inking zones. A relation is formed between a measured ink density value, which is determined for a specific ink in a selected ink zone, and a measured ink density value determined for the same ink in at least one other inking zone. The measured ink density value for the specific ink in the selected ink zone is rejected as being implausible, and is not used for automatically regulating the ink in the printing press, if the relation between the measured value and the measured value for the same ink in the at least one other inking zone inadmissibly either exceeds or lies below at least one predefined threshold value.

Method for assessing the plausibility of at least one measured value determined in a printing press

The ink in a printing press, in which a stock of material is being printed in an ongoing printing process, is registered. At least one ink is applied to the stock in several inking zones. A measured value, indicating an ink density, is determined for the at least one ink which is being applied to the stock in the printing process and within the printing press. A relation is formed between the measured ink density for a specific ink in a selected ink zone and a measured ink density value determined for the same ink in at least one other inking zone. The relation between the measured ink density values in different inking zones is formed only if the majority of the inking zones of a specific inking unit of the printing press supply one respective measured ink density value for an ink supplied by that inking unit, and when the measured ink density value reaches at least a predetermined fraction of a preset, desired value in the respective inking zone.

Method for regulating the ink in a printing press

At least one register and an ink density are controlled in a printing machine having at least one printing unit which includes a forme cylinder, a transfer cylinder, and a counter-pressure cylinder. An image sensor records an image from a print substrate, which is imprinted with ink, inside the printing unit, and sends data correlated to that image to an evaluation unit. The data for the last printed image is compared with prior data and in response, the evaluation unit generates a command that is directed to an actuator for controlling the supply of ink. The image sensor is oriented towards the print substrate and detects the entire width of the printed substrate, which width is transverse to a direction of substrate conveyance. The evaluation unit generates the actuating command to control the supply of ink based on data from the image sensor and taken over the entire width of the substrate. The evaluation unit also controls register, based on this data. The forme cylinder has a separate drive which can be controlled separately or that can be regulated by the counter-pressure cylinder assigned to it.

Devices for controlling at least one register in a printing machine

A printing machine has at least one machine element which can be adjusted by the use of a setting element. An adjustment of the one machine element has an effect on the quality of the printing performed by the printing machine. An optical detection device, which includes a sensor that is oriented toward the surface of a material which is being printed, detects the quality of the printing. A controlling device receives data from the optical sensor and adjusts, together with the setting element, the at least one machine element based on a difference between a quality of the printing which has been specified as a set value and the quality of the printing detected as an actual value by the optical detection device. This adjustment is done to manage the differences between the set value and the actual value. The control is based on the fact that the quality of the printing is detected in its entirety by the optical detection device and the data is evaluated with regard to disturbing influences acting upon the quality of the printing.

Printing machines having at least one machine element that can be adjusted by a setting element

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Detmold, Germany

Stefan Budach