The application of laser printer is very extensive, whether it is in metal, plastic, ceramic, or electronic components, it can be well used. With the continuous development of science and technology, two-dimensional codes, as information signs in this new era, have flooded our lives, everywhere, in print advertisements, online media, TV media, commodity logos and so on. Since the QR code can store a large amount of information, it can be used as a new type of publicity and marketing methods, and it has been used by more and more merchants and manufacturers.