Process and device for determining the position of a printed paper web

A device for determining the position of a printed paper web in a printing press, the device comprising:

• a data processing device determining reference values for determining a position from image data of a preliminary printing stage;
• at least one sensor for detecting at least part of a printing style on the paper web and providing measured values, the sensor being an optoelectronic sensor;
• a comparing device comparing the reference values and measured values from at least one sensor with one another in order determine a position of the printed paper web therefrom;
• a regulating device for regulating the position of a paper web, said regulating device using the determined position of the printed paper web as an input signal;
• wherein the comparing device and/or the regulating device perform at least one of the steps of:
• obtaining reference values for determining the position from image data of a preliminary printing stage;
• detecting at least part of a printing style on the paper web;
• obtaining reference values from the image data of the preliminary printing stage;
• comparing the obtaining reference values with measured values detected by the at least one sensor;
• determining the position of the printed web from the result of the comparison;
• using the position of the printed paper web determined for regulating using the position as an actual value;
• using the position of the paper web and/or the cutting position of the printed paper web in a rotary printing press to measure and/or regulate with a main register and/or secondary register and/or bundle register and/or a virtual register;
• recognizing errors in mounting during the arrangement of printing plates on the printing cylinders in a printing press, wherein an error message is automatically generated when the correlation between the measured values and the set points is too weak during the comparison of the measured values with the reference values;
• and
• determining and/or regulating the relative position of the printing styles on the odd page of a paper web relative to the printing styles on the even page of the same paper web.

A process for determining the position of a printed paper web in a printing press, the process comprising:

• using a rotary printing press to print on the paper web;
• obtaining reference values for determining the position from image data of a preliminary printing stage;
• detecting at least part of a printing style on the paper web using one or more sensors;
• obtaining reference values from the image data of the preliminary printing stage and comparing the obtaining reference values with measured values detected by the at least one sensor;
• and
• determining the position of the printed web from the result of the comparison;
• determining and/or regulating the relative position of the printing styles on the odd page of a paper web relative to the printing styles on the even page of the same paper web.

A process for determining the position of a printed paper web in a printing press, the process comprising:

• obtaining reference values for determining the position from image data of a preliminary printing stage;
• detecting at least part of a printing style on the paper web using at least one sensor;
• obtaining reference values from the image data of the preliminary printing stage and comparing the obtaining reference values with measured values detected by the at least one sensor;
• and
• determining the position of the printed web from the result of the comparison;
• recognizing errors in mounting during the arrangement of printing plates on the printing cylinders in a printing press, wherein an error message is automatically generated when the correlation between the measured values and the set points is too weak during the comparison of the measured values with the reference values.