Roller Nip Indicator

Roller nip is critical for offset printing since it both transports and processes the ink and fountain solution. the technology is unique in that the process components, ink and water, are mixed under pressure during printing, creating a new solution.

Contact width – estimated by applying ink to the rollers, rotating them and measuring the width of the strip – varies acording to type of ink and final viscosity after mechanical mixing. The dymanic properties of the rubber roller constantly change too. The rubber ages, hardens and is also affected by the heat generated from friction during printing.