The use of ink is still very extensive. Ink is not only used for printing, but also has a wide variety of types, which can be divided into oily ink and water-based ink. With the widespread use of ink, the usage of ink has also increased. Ink manufacturers want to ensure both production and quality, so in the production process, ink specific fluorescent brighteners are essential. Coatings and ink turn yellow after thermosetting, and adding a whitening agent can improve the problem of ink yellowing, increasing the whiteness and brightness of the ink.

For most consumers, when choosing ink, they do not pay attention to production issues. After all, there are many manufacturers that produce ink and there are multiple ways to choose. Consumers are more concerned about quality issues, and at the same price, it is likely that people are still willing to purchase ink with a bright appearance and good weather resistance.

For ink manufacturers, it is very important to add ink specific fluorescent brighteners during the production process. This is because the whitening principle of fluorescent whitening agents is an optical whitening method. Ink uses fluorescent whitening agents to absorb ultraviolet light and emit blue purple fluorescence, which mixes with the yellow light on the ink surface to form white light, making the ink surface tend to be fully reflective, making the white ink visually more pure and bright, and the light color more dazzling.