In gravure printing, whether the application of ink is appropriate or not is directly related to the vast majority of quality issues such as the transfer of pigments, dirtiness of printed boards, glossiness of prints, firmness of pigments, and static electricity. Affect the print product yield and work efficiency. Sometimes in the production of ink will produce virtual and halo phenomenon, the author through a variety of verification, draw the following exclusion methods, for peer reference:
In the production process, the printed matter has a false pattern print, the ink layer is thin, and there are bilateral or bead-like shadows around the edge of the printed pattern, which increases the scrap rate. After looking through the reasons, it is known that due to the uneven pressure of the plate roller, the blanket cushion is not true; the plate roller pressure is too heavy, the ink viscosity is small, the dispersion is large, and the ink on the printing plate is too much; The product sends out imaginary and halo phenomena. The pressure of the plate roller was readjusted to equalize the pressure, and at the same time, a higher concentration and higher viscosity ink was used. By increasing the drying speed and giving a proper amount of ink, the aforementioned ink failure can be eliminated.
Source: Mingguang Color Packing Factory Liu Hui