Almost all new banknote colors worldwide are mixed on mixing and fine dispersing machines from Bühler. The newest newcomer was introduced in August and comes from Switzerland: the new 200-franc note.
A soft hum. There's not much else coming from the three roller mill – unimpressed, diligent. It's a suitable background noise, because the production of banknote ink is a sober, closely controlled process. The new 200 franc notes are created for the Swiss National Bank, or SNB, with the earth brown ink that is evenly distributed by the ink manufacturer over the turning rollers, The three roller mill from Bühler only hums until the color has reached the right consistency and brightness.
"The roller technology that we use in our machines produces a consistent high quality ink. Reproducibility is one of the most important criteria for our customers," said Norbert Kern, Head of Process Technology at Bühler Grinding & Dispersing. The department produces solutions for color ink manufacture, and with its technology for banknote ink manufacturing it enjoys the highest confidence of national banks and banknote presses around the world – its colors have to match.