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Blue4est® is the innovative thermal paper from Koehler. It is guaranteed to be free of chemical developers and can easily be used in any conventional thermal printer.
Instead of a chemical reaction to heat, the emergence of text on our new Blue4est® thermal paper is a purely physical reaction.
The paper’s opaque functional layer turns transparent due to the effects of heat, and the black layer beneath it is revealed.
On some days, the hills of the Black Forest take on a peculiar, shimmering blue color – which is just as unmistakable and unique as the color of our new Blue4est® thermal paper.
It is this proximity to nature which helps us come up with new products so often – just like the world’s first sustainable thermal paper, Blue4est®.
If you have any questions related to our products, the Koehler sales team will be happy to help. Just send us your inquiries using our contact form.