Printing ink transfer

No matter which printing method is used for printing, the ink must be placed in the ink fountain. During the printing process, the ink slowly flows out of the ink fountain, and is stretched by the ink roller to the layout, and finally transferred to the surface of the substrate.

Understand the various factors that affect the transfer of ink, and master the ink supply in printing, in order to obtain high-quality printing products. The following sections describe several factors that affect ink transfer primarily:

(a) Printing pressure and ink transfer

As the printing pressure increases within a certain range, the ink transfer rate increases. But beyond this range, the printing pressure increases and the ink transfer rate no longer increases.

(B) Printing speed and ink transfer

As the printing speed is increased and the contact time between the paper and the printing plate is reduced, the amount of fixed ink that is pressed into the paper table is relatively reduced, and the ink transfer rate becomes smaller.

(3) Printing materials and ink transfer

Different printing materials, the amount of ink is different, aluminum foil, plastic film transfer is minimal, flat printing books and papers the largest (temperature 20 °C, printing pressure 23kg/cm2, printing speed 1 m / s, black version of the cable version).