Roland inkjet machine FJ-740K, the recent emergence of uneven gradient of the situation is very serious. If the picture is a pattern of gradient is the color of the separation of the situation, the color transition of the dividing line clear; if it is a solid color gradient, it will be doped with other colors (such as: blue and white gradient doping is not obvious yellow and green, black and white gradient Also doping is not obvious yellow and green).
As the pigment ink has excellent waterproof and storage performance, many consumers are very interested in it, especially some use even for the system or self-injection of the user. But to remind you that if your printer is the original use of dye ink, and now to switch to pigment ink, then, be careful, especially the use of Canon, HP and other hot bubble technology used by the printer users. This is mainly because the colorant in the pigment ink is a solid small particle having a particle diameter 50 to 100 times larger than the colorant molecules in the dye ink. Rush to use pigment ink, nozzle chances are likely to greatly increase, with the pigment ink has a waterproof feature, clear the difficulty of the nozzle is relatively high. And HP, Canon and other use of the hot bubble technology printer, the work of high temperature and pressure may damage the structure of pigment ink, resulting in printing is not normal or even the nozzle was damaged.
For bottled compatible ink, in addition to looking at the manufacturers to buy the label, but also by observing the ink to distinguish. Since the colorant in the dye ink is soluble, the dye ink is transparent from the appearance. And the colorant in the pigment ink is insoluble and exists in the ink in a suspended state, from which the pigment ink is opaque.
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.
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.
