The drying speed of ink has become the main content of ink drying. So, what is the harm of ink drying too fast? It can reduce the normal transfer performance of the ink and affect the normal production; it can cause the imprinting to be weak, the ink color is light, and the ink drying on the surface of the printing plate and the ink roller can block the ink during the transfer; it can make the printing plate graphics and text dry layer to External expansion; it can increase the ink adsorption due to excessive desiccant dosage, and the blank part will cause dirt. So what harm does the ink dry too slowly? It can cause difficulty in overprinting and adhesion; it can cause poor adhesion and reduced firmness; it is easy to cause scratches during transmission. Therefore, the drying speed of the ink should be appropriate, too fast or too slow is disadvantageous.