Do You Know The Classification of The Ink

Printer ink is a very important part of hp printer. We need to think which kind of ink we should buy, in that way, maybe can save more cost of printer ink cartridges, or extend the life of printer.

Classification of the ink According to the color classification, the ink can be divided into dye type ink and pigment type ink. Dye-type ink is currently used in most inkjet printers. It is a dye-based ink, because the dye can be formed in a stable state of molecular state and solvent composition, so the dye ink print image resolution, good clarity, but the light resistance, poor water resistance, and more for indoor applications. The pigment type ink is a pigment-based ink, and the pigment is generally present in the solvent in a particulate state. Pigment ink is particles dispersed into the ink, the pigment particles remain on the surface of the substrate such as paper, so the printed image color intensity, gloss are high. At the same time, when it is exposed to the external environment or sunlight, the light, high temperature decomposition, suitable for outdoor use.

The main performance parameters of the ink inkjet printer requires high thermal stability and chemical stability. The performance parameters that affect the ink printing performance are mainly the following: First, the viscosity and surface tension: the viscosity of the liquid flow resistance, the liquid surface tension is related to the formation of droplets, in general, inkjet ink to have a Low viscosity, high surface tension to ensure good flow performance and droplet morphology. Second, the PH value: that the concept of liquid pH, the solution the more acid, the lower the PH value, on the contrary, the solution alkali, the higher the PH value. To prevent ink corrosion nozzle, PH value should generally be between 7-12. Third, the conductivity: In the ink, the conductivity value is used to reflect the level of salt content. In general, the salt content can not exceed 0.5%, in order to avoid the formation of crystallization in the nozzle and cause clogging. Fourth, the dispersant: a kind of surfactant, its role is to improve the physical properties of the ink surface, and enhance the affinity of ink and sponge, wetness. So generally through the sponge storage, conductive ink contains a dispersant.

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