RISO ComColor® high-speed inkjet printers employ 24 in-line Piezo drop-on-demand print heads. Each of the four colors (cyan, magenta, yellow, and black – and in the case of the ComColor GD Series, the fifth color of gray) has six print heads in a row imaging the page. Piezo print heads use vibration to create ink droplets. … Continue reading RISO Inkjet – See The Models