1.Adopt ceramic mesh roller spread ink 2.Unwinding and rewinding are controlled by magnetism power brake, clutch. (or by automatic tension controller of mitsubishi, made in japan). 3.Printing unit adopt 360o for registration. 4.Printing unit has one infrared to dry the device group each. 5.The rubber roller can break away from automatically while parking, and running at a low speed, in order to avoid water being black to be dry.