The thickness of the ink layer of the printed matter has a great influence on the quality of the printing. Practice has proved that the thickness of the ink layer of the printed product is related to the viscosity and fluidity of the ink. The ink viscosity is too large, the ink layer is thick, and the paper wool phenomenon will occur when printing; the ink viscosity is too small, the ink layer is thin, and the ink roller is easy to slip when the ink roller rotates, causing the ink bar to increase the dots and the image distortion The surface gloss is poor. Therefore, accurate control of ink layer thickness is an important part of print quality control.
To accurately control the thickness of the ink layer, it is necessary to analyze according to the actual production conditions (such as ink properties, layout structure, temperature level, printing machine speed, paper ink absorption and surface smoothness, etc.). Generally speaking, under the conditions of low ambient temperature and relatively dry climatic conditions, the printing ink layer can be thinner; on the contrary, the printing ink layer should be thicker when the temperature is high. When the surface of the printing paper is rough and the ink absorption is strong, the ink layer is properly thickened, and the layout is not easy to bloom. If the printed product is mainly based on the screen image, the ink layer should be thinner to avoid paste. If printing a solid version, the ink layer should be thicker. In addition, when the speed of the printing machine is fast, an appropriate thickening of the ink layer can achieve the desired ink color. In short, the above methods can be used flexibly in production to obtain better results.
When the viscosity of the ink is improper and causes blooming or floating ink, you can add an appropriate amount of No. 0 ink to the ink. When mixing, mix the mixing oil in the ink.
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