What is the effect of ink on the quality of monochrome printing in printing?
Perhaps in the eyes of ordinary people, compared with color sample printing, the process of monochrome sample printing is much simpler, and the requirements for ink will be relatively low. However, in practice, the printer pointed out that the requirements for ink for monochrome sample printing are not low, and the modulation of ink has a great impact on the quality of monochrome sample printing. How does ink affect the quality of monochrome printing in printing Because the stronger the polar adsorption of the ink, the more emulsification will be promoted, and the greater the viscosity of the ink, its cohesion will be increased, that is, the viscosity will strengthen the adhesion between ink molecules. Therefore, when printing monochrome samples, it is necessary to enhance their water resistance, and the ink viscosity must be adjusted during the printing process to achieve suitable printability, which will affect the emulsification of ink. Professionals will be in the preparation of ink, the amount of control is appropriate, the general ink oil not only dilutes the ink color, but also increases the fluidity of the ink color, reduces the viscosity, weakens the cohesion between molecules, affects the ability of the ink to hold water, and will lead to emulsification. From the perspective of the pigment properties in the ink, the quality of the pigment used in the inks of various colors is different, which determines the difference in its emulsion value. For example, the ink made of carbon ink pigment has a small emulsion value and is not easy to emulsify, which is mainly due to the good hydrophobicity of carbon ink. For the ink made of lake pigments, due to the hydrophilicity of pigments such as aluminum hydroxide and aluminum-barium white, the ink structure is easily destroyed during the printing process, and the pigment particles may play the role of emulsifiers, resulting in ink emulsification. How inks affect the quality of monochrome printing in printing As for the influence of auxiliary materials in monochrome sample printing. The main component of the drier is metal soap, and the residual water-soluble salts, which have strong hygroscopicity, also act as a strong emulsifier. Adding a certain amount of drier to the ink can accelerate the drying of the oil. However, excessive dosing can also have a negative effect, which can lead to emulsification of the ink and reduce the drying rate of the ink.