How does the physical properties of the ink affect the quality of the print?

The physical properties of the ink include specific gravity, fineness, fluidity, and lightfastness. * Ink with a large specific gravity has a large consumption during printing and is disadvantageous for reducing costs. In addition, the heavy ink is easy to stack or roll. * Fineness of the ink The fineness of the ink is unacceptable. Fringes, stencils, and dot gains occur when printing dots. The finer the fineness, the stronger the tinting strength of the ink and the better the printing effect. * The fluidity of the ink is denser, the more viscous, the less fluidity of the ink. The ink is too thick, the ink fountain is not easy to ink, and the ink on the ink roller is also not easy to be even, so that the ink on the printing plate cannot be kept uniform, and the printing plate is easy to accumulate, resulting in pulling phenomenon. If the liquidity is too large and the viscosity is too small, the prints will be dull and distorted, the dots will be distorted, enlarged, and the paste will be dirty. * Lightfastness of ink After the ink is printed on the surface of the substrate, the color will gradually change under the effect of light. This is because the pigments in the printing ink will undergo chemical changes under the sunlight exposure, so the light-fast printing products can be stored for a longer time.