Kao Collins launched Sigma, a solvent ink for HP 45si thermal inkjet technology.  The company set out to reduce the wiping and purging of nozzles, which slows production. “We saw how many solvent ink users struggled with the short decap,” Kao Collins Marketing Manager Kristin Adams said. Sigma achieves fast curing without external heat sources and increases decap to at least four times that of other inks on the market. The aggressive solvent dries quickly on plastics. Not only does Sig...