Experts share ink knowledge: How to identify the quality of ink?

As an important part of the printing industry, ink plays a vital role in the quality of printed matter. Good ink can ensure the clear print pattern, full color and durable enhancement, while poor quality ink will lead to blurred pattern, color instability and even fading. Therefore, the importance of identifying ink quality is self-evident for the printing industry.

First, through the color fullness to identify the quality of ink

The color saturation of ink is one of the important indexes to measure the quality of ink. Generally speaking, good ink has a high degree of fullness and bright colors. When buying ink, you can first print a small area on the waste paper, and judge the color saturation of the ink from the color of the test print. Good ink will show a clean, bright, full and uniform color, while the color of poor quality ink will appear dull.

Second, through the control of color difference to identify the quality of ink

The color stability of ink is an important index. In general, the color in the same package of ink should be as consistent as possible, and it should be relatively stable with previous and subsequent batches. For the industry with strict color requirements, the color difference control of ink is very important. In practical applications, a color difference measuring instrument with high accuracy can be selected to test the color difference of the ink. With the help of the color difference measuring instrument, the color difference value of the ink sample can be obtained quickly and accurately, and compared with the standard color, and then the quality of the ink can be judged.

Third, through the fluidity and consistency of ink to identify the quality of ink

The fluidity of ink is an important parameter, which directly affects the printing effect of ink. A good ink should have appropriate fluidity, that is, the ink can flow smoothly from the cylinder of the printing press, neither blocking the nozzle, nor producing fuzzy patterns during the printing process. The fluidity of low-quality ink will be poor, and it can not be sprayed smoothly, resulting in uneven ink flow and fuzzy patterns.

Fourth, through the ink adhesion and wear resistance to identify the quality of the ink

The adhesion and wear resistance of the ink directly affect the effect and durability of the ink in the printing process. When using ink, we need to consider the adhesion and wear resistance of the ink to ensure the quality of the print. Some simple methods can be used to identify the adhesion and wear resistance of the ink, such as rubbing the print with your fingers to observe whether the ink falls off; Rinse the printed matter with water to see if the ink fades.

In summary, there are many ways to identify the quality of ink, through the color fullness, color difference control, ink fluidity and consistency, ink adhesion and wear resistance and other indicators can initially judge the quality of ink. In addition, when purchasing ink, you should choose a regular ink manufacturer, pay attention to the relevant quality certificate of the ink, and conduct sample verification to ensure that the quality of the purchased ink is qualified.

Finally, it needs to be reminded that the importance of identifying ink quality is not only for printers, but also for consumers of printed matter. Therefore, when purchasing printed matter, it is necessary to understand whether the quality of ink meets national standards to ensure the quality and value of printed matter.