Under the condition that screen printing does not exist on the same basis, many companies have established production standards and their deviations without considering their respective conditions. Due to the absence of objective quality control conditions, it has caused many screen shops to produce inaccurate and unpredictable printing colors in printing. In fact, this is completely avoidable because the screen printing process can be controlled by a series of quantifiable parameters. You can get these parameters by measurement and get the desired color reproduction standard. In addition, it can help you to obtain accurate and consistent colors, help you to improve the overall quality of the printing, and enhance the stability of product reproduction in printing. In the establishment of standards, the following parameters should be considered: 1. Printing outlets and tonal range 2. Ink thickness 3. The optical density of the printed color. Dot gains and losses The first two parameters of the ink overprint are mainly affected by the quality of the silk fabric. Choosing the right mesh diameter is just as important as using the correct silk fabric and mesh count. In addition, in order to ensure the consistency of the print quality standards, you should learn how to calculate the deviation of these parameters. Other parameters are affected by some measurable factors in screen making and printing. In the following periods, the above five parameters will be briefly described.