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.

Advantages

• Ecofriendly
• Resistant to outside influences such as sunlight and humidity
• Long-lasting print (> 35 years)
• Unmistakable due to its unique Color
• Premium POS paper without chemically reactive components
• The first thermal paper to be approved for direct contact with Food
• Compatible with common thermal Printer
• Outstanding printability
• Award-winning technology: Koehler and Dow were awarded the US Green Chemistry Award 2017 for Blue4est®, among others