Grating is one of the most effectively fixed position detector. In the tenth Five-year Project, our school undertook the research task of the Large-format inkjet plotter. According to the requirement of the Large-format inkjet plotter, we adopt the 180dpi~360dpi transmission grating as the inkjet anchor point detector.Holographic lithography is one of important method for producing transmission grating. The equipments physical volume is limited, so the length of grating that produced is limited , therefore,...