With four-colour newspaper print, the colours are determined by printing certain colour values of the coloured printing colours and black over one another. The data record produced in this way generates the required colour in standardised print. This means that e.g. a colour envisaged as grey in the pre-stage also appears grey in the printed end product. In this case, a correct colour scheme is given.
If the ratio (application of colour) of the four colours to one another is not preserved in a transfer step, the colour balance is disrupted and a colour cast develops. This can become unattractive. Using three colour application rollers, it is ensured that always the colour quantity required at that time is available in the system of the print machine.
In addition, our printers constantly keep an eye on the colour impression of the newspaper.
Our soft proof system serves to depict colour data on a control screen. In this way, it is simulated how these will appear on the selected print paper.
What does that mean for the print? As a result of the soft proof, our employees know exactly what colour impression is required by the customer and it is ensured that this is also reached.
A major benefit of this system is the low energy required by the diodes which only have an output of 60 mW. The exposure of the plates is done with a resolution of 1,270 dots per inch. This fineness of exposure is ideally tailored to the screening required in the print process. Top quality can only be generated in the perfect interaction between these two parameters.
The alignment of the plates during manufacture is done under video surveillance. For this purpose, the plate is aligned with a speed of 0.005 mm (human hair has a diameter that is ten times greater). If this tolerance is exceeded, the plate will be automatically recognised as harmful, channelled out of the process and the production of a new plate initiated.
The buffer/sorting machine works with a speed of 450 plates per hour (storage and removal are done in parallel). In total, 36 compartments each with 32 plates are available in our plate production for accommodating sorted plates. This is a capacity of 1,152 sorted print plates.