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The Advantages And Disadvantages Of Dye Ink And Pigment Ink

Apr 08 , 2020

Dyes and inks have good color reproduction ability, but the prints are poor in waterproof, light resistance, and oxidation resistance. After long-term storage, the photos are prone to fade. The characteristics of pigment inks are reversed. The printed photos have better water resistance, light resistance, oxidation resistance, and preservation performance, but the color reduction ability will be slightly worse. It is a Resistant Sublimation Ink. Why are these two inks so different in characteristics? This has to start with its structure.


The dye colorant in the dye ink is completely dissolved in ink in a single molecule. The colorant particles are small and easily soluble in water or other chemical solvents. Such a structure makes it difficult for the dye ink to block the nozzle. Even if it is clogged, dredging the nozzle is relatively simple. However, there are a large number of hydrophilic particles in the dye colorant of the dye ink, which are easily dissolved. In this way, once the printed manuscript meets Water, the colorant that was fixed on the medium will dissolve again, and spread to the surroundings with the flow of water, causing serious blooming. This is the main reason for the poor water resistance of dye inks. At the same time, the colorant of the dye ink is directly exposed to the air. Under the action of light and ozone, the chemical chain of the dye colorant may break, causing the colorant to change color, etc., which will cause the print to fade, thereby affecting its preservation performance, such as Water Based Dye Ink for Epson.


Pigment ink is the image of powdery pink. Of course, this is just a kind of image, and it is not accurate enough. To be more precise, it is the grinding of solid pigments into very fine particles, dissolved in a special aqueous solvent, which is a suspension solution or semi-solution, which is the same as the pigment properties of our printed and dyed clothes. Contrary to the principle that dye ink penetrates into the medium and then forms color, it develops color by attaching color materials to the surface of the medium (such as copy paper or printing paper, etc.).


For example, Dupont Material Pigment Ink has the advantage of printing with pigment ink, even if it is printed on ordinary paper, it will not bleed, and because the pigment itself is waterproof, it is not easily decomposed by ultraviolet light, so it has strong water resistance and light resistance. Even if it is used outdoors, it can be maintained for more than one year without obvious signs of discoloration.


Water Based Dye Ink

Water-Based Dye Ink 

The disadvantage is that most of the pigment ink will cause the residual color material on the surface. Therefore, even when printing on glossy paper and other flat surface paper, it can not print a glossy image. This is why it is generally printed with pigment ink. The things are not shiny. In addition, the manufacturing cost of pigment ink is higher, so the price is also higher than dye ink, and the price difference is as high as two to four times.


Why is the color reduction ability of dye ink better than pigment ink? This is mainly due to the different choice of colorants. For dye inks, after decades of development, the process has been very mature, and it is easy to use natural or synthetic methods to produce colorants of various colors. The traditional pigment inks rely on ground minerals as colorants. The available raw materials are very limited, and the colors cannot be changed at will. This leads to the inherent shortcomings of pigment inks in color performance. At present, although some colorants of pigment inks can be ground and manufactured with some non-mineral materials, due to the strict requirements of pigment inks on the particle size and emulsification effect of colorants, the technical problems of colorants have not yet been completely solved. This leads to a certain gap in color performance between pigment ink and dye ink. Fortunately, this gap is already very small. Without a direct comparison, it is difficult to visually distinguish the color difference between high-quality pigment ink and dye ink.