WARNING: Does not work with printers with an optical paper sensor! (Please check with your IT/POS supplier.)

Sustainable: without chemical color developers! Durable: non-fading image! Harmless: approved for direct food contact!

Blue4est® is the innovative thermal paper from Koehler. It is guaranteed to be free of chemical developers and can be easily used in all common thermal printers. Instead of a chemical reaction to heat, the writing development on the new Blue4est® thermal paper is a purely physical reaction. The opaque functional layer of the paper becomes transparent under the influence of heat, and the underlying black layer becomes visible.

Environmentally friendly Resistant to environmental influences such as sunlight or moisture Long-lasting print (>35 years!) Distinctive due to its unique color Premium POS paper without chemically reactive components First thermal paper approved for direct food contact Compatible with all common thermal printers Excellent printability Award-winning technology: US Green Chemistry Award 2017