Abstract: The low-field nuclear magnetic resonance (LF-NMR) is used in the design of a formula of a water-based printing ink and selection of the water-based printing ink or a wetting agent. The water-based printing ink or the wetting agent is quickly selected through the inversion data of an LF-NMR transverse relaxation time (T2). By using LF-NMR to detect the distribution of water in the water-based printing ink or wetting agent, the water-based printing ink is quickly detected in real-time and a high-quality water-based printing ink is selected, which contributes to the design and development of water-based printing inks. The state of water in the ink also is adjusted based on the relationship between the distribution state of water in the printing ink and the definition of the printed pattern, thereby ensuring the definition of the printed pattern.

Abstract: The present invention relates to use of low-field nuclear magnetic resonance (LF-NMR) in the design of a formula of a water-based printing ink and selection of a water-based printing ink or a wetting agent. The present invention quickly selects a water-based printing ink or a wetting agent through the inversion data of an LF-NMR transverse relaxation time (T2). By using LF-NMR to detect the distribution of water (free water, hydrogen bonded water and bound water) in the water-based printing ink or wetting agent, the present invention achieves rapid real-time detection and selects a high-quality water-based printing ink, which contributes to the design and development of water-based printing inks. The present invention can also adjust the state of water in the ink based on the relationship between the distribution state of water in the printing ink and the definition of the printed pattern, thereby ensuring the definition of the printed pattern.