DIS-300 is a laser direct imaging device based on digital micromirror array (DMD); during the pattern formation process, the graphics are converted into machine data by the computer and transmitted to the DMD, and then the graphics are directly projected onto the photosensitive material to complete the exposure. Adopting high power 405nm laser module, long performance life、lower power consumption, high image resolution. Equipped with the high precision linear motors, high precision exposure can be created directly one the screen surface, the whole process is high resolution, high efficiency and low cost, the resolution can reach 1270/2540dpi. The stable cooling system can ensure the machine inside to maintain a constant temperature of 22 ℃, guaranteeing the machine stability. The newly designed pneumatic fixture can firmly fix the screen frame, facilitating the replacement of various sizes of the screen frame, and the maximum exposure size of the screen frame is 1200*1500mm.