DC500S series printer can meet the requirements of high-speed production line, high-intensity production, also meet the GMP, clean workshop and other high requirements of the working environment. The patent negative pressure ink supply system is adopted to ensure the stable operation of the machine at high speed, without deinking, broken line and ink accumulation. Advantages: The highest line speed up to 600m/min, 304 stainless steel cabinet, the maximum print size up to 210mm, negative pressure accuracy up to ±0.01Kpa.