1, may be due to the use of excessive thinner, especially the thinner and ink solubility is poor, resulting in the infiltration of color.

2, may be due to the use of ink in the dye-caused, it can be said that the packaging with the wholesale use of pigments caused by improper collocation.

3, may be due to the printing and text edge infiltration color, and this is the most common phenomenon, so do not worry too much, as long as the general method can be solved.