An offset color printing machine is a type of printing press that is used to produce high-quality color prints. Offset printing is a popular printing technology for producing large quantities of printed materials, such as brochures, books, magazines, and packaging.In an offset color printing machine, the image to be printed is first transferred onto a printing plate. The plate is then mounted onto a cylinder, and ink is applied to the plate. The inked image is then transferred onto a rubber blanket cylinder, which in turn transfers the image onto the paper or other substrate being printed.