inorganic pigments. Organic pigments have bright hues, strong coloring power, and short drying
time. They are widely used in inks. Colorants are the main components of inks. The color of inks
is determined by them. It can give inks Different colors and color concentrations, and make
the ink have a certain viscosity and dryness.
and the time required to complete this process is called the drying time. Short drying time means
fast ink drying and long drying time means slow ink drying. The drying speed of the ink has
a great influence on the quality of the printed matter. If the drying is too fast, the ink will be
skinned and pasted on the surface of the printing plate,
gravure printing, there are many factors that affect the adhesion fastness of ink on the surface of
the substrate. Only by comprehensive analysis and evaluation of ink components, solvent
properties, and substrate properties can the ink’s adhesion fastness be fundamentally improved.
The test of ink adhesion fastness is generally measured by scotch tape sticking and pulling.