In gravure printing, it is common to encounter problems of too light or too thick colors. Today, let's take a look at the reasons and solutions for this situation!
Color too light
Insufficient printing color concentration.
Reason:
1. Excessive solvent in ink
2. Ink precipitation
Solution:
1. Add new ink and adjust the ink to the appropriate viscosity
2. Before putting the ink into the ink tray, it should be thoroughly stirred
Color too thick
The printing color concentration is too high.
Reason:
1. Excessive ink viscosity
2. Excessive ink concentration
3. The gravure engraving is too deep or damaged
Solution:
1. Add a specified amount of solvent to the ink and adjust the ink to an appropriate viscosity
2. Add diluent solvent or diluent (made by dissolving resin)
3. Remake gravure rollers or fill in dents