Measurement and regulation of inking in web printing

A device for measuring the inking in web printing for performing an integrating measurement of the light remitted by a printed material web in the direction of run of the material web, the device comprising:

• a sensor element for receiving light that is remitted by a running, printed web of material;
• an adding or integrating means, which is connected to a sensor element, of which there is at least one, in order to determine the intensity of the light received,
• a control, which presets the duration of reception of light and/or the duration of the addition or integration by means of the adding or integrating means for an adding or integrating intensity measurement of the remitted light in the direction of run of the web.

A process for regulating the ink density in web printing, the process comprising:

• generating actual values by a process including providing a measuring head or a plurality of measuring heads and performing an integrating measurement of the light remitted by a printed material web in the direction of run of the material web using the measuring head or a plurality of measuring heads;
• calculating set points from the image data, forming integrals of the remission spectrum over the columns of the image and folding these with the measuring field function of a measuring head, or forming set points from the measured actual values of pages that are considered to be good;
• setting the ink density by setting the ink feed or the damping agent feed.

A device for regulating the ink density in web printing for performing an integrating measurement of the light remitted by a printed material web in the direction of run of the material web using the measuring head or a plurality of measuring heads, the device comprising:

• a sensor element for receiving light that is remitted by a running, printed web of material wherein set points are calculated from the image data.