The difference between the printer pigment ink and the dye ink
The structure of the pigment ink is the same, and the colorant is some solid small particles. In order to uniformly disperse these solid colorants in the ink, an emulsifier is added so that the colorant is coated with a special resin component outside, and the ink is emulsified by means of a small amount of hydrophilic particles on the resin layer, and the colorant is suspended in the ink The As the coloring agent is not dissolved in water, when the printed version of the water, the colorant does not migrate with the water, its water resistance naturally greatly improved. The pigment ink coloring agent is generally highly crushed minerals, its own stability is very good, with the outer layer of coloring agent wrapped resin layer, when the case of sunshine and ozone, the first destruction of the resin Layer, and the internal coloring agent is not affected, naturally not easy to produce fading phenomenon.
Dye ink has a good color reproduction ability, but the printed version of the waterproof, anti-light, poor antioxidant capacity, photos after long-term preservation, prone to fade phenomenon. The characteristics of the pigment ink is the opposite, print out the photo has a good waterproof, anti-light, anti-oxidation and storage performance, but the color reproduction capacity will be slightly worse.
Why is the color reproduction power of the dye ink better than the pigment ink? This is mainly due to the choice of different colorants caused. For dye inks, after decades of development, the process has been very mature, you can easily use natural or synthetic methods to create a variety of colors of coloring agent. The traditional pigment ink is to rely on grinding minerals as a coloring agent, optional raw materials are very limited, the color can not be arbitrarily changed, which led to the pigment ink in the performance of congenital deficiencies. Although some pigment ink colorants can use some non-mineral materials to produce grinding, but because of the pigment ink in the colorant particle size, emulsifying effect and other aspects of strict requirements, the color of the technical aspects of the problem has not yet been fully resolved. Which led to the pigment ink and dye ink in the color performance there is a certain gap. Fortunately, this gap has been very small, in the case of no direct comparison, it is difficult to distinguish between the high quality pigment ink and dye ink between the color difference.
The dye colorant in the dye ink is completely dissolved in the ink in a single molecule, and 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 clog the nozzle. Even if the plug, clear the nozzle is also relatively simple. But the dye ink dye colorant there is a lot of hydrophilic particles, easy to dissolve. So that once the printed version of the water, the original fixed on the medium of the coloring agent will be dissolved again, and with the flow of water to the surrounding spread, causing serious blooming phenomenon. This is the main reason for poor dyeability of dye ink. At the same time, the coloring agent 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 coloring agent to change color and so on, so that the printed matter fades, thus affecting its storage performance.
