Why ink chemistry matters more when printing at high speed.
When printing at high speed, the "wetting" of the ink on the substrate happens in milliseconds. If the surface tension is too high, the ink beads up; if too low, it bleeds. Single Pass pigment inks are chemically engineered with specific surfactants to ensure the drop stays exactly where it lands. This is particularly vital for corrugated boards, which are porous and can absorb ink unevenly if the chemistry isn't perfectly balanced with the printhead's firing pulse.