At present, the development of digital printer, which are the main printing machine of the advertising printing market, has become more and more mature.Ink is the main consumable of the digital advertising printing machine, and it is also the most used consumable. According to the composition of the ink, it can be divided into water-based and oil-based ink.What are the main parameters of the ink and how does it affect the digital printer?
1.Viscosity and surface tension.Viscosity is the resistance to liquid flow. The surface tension of a liquid is related to the formation of droplets. Generally speaking, inkjet inks must have a low viscosity and a high surface tension to ensure good flow performance and droplet morphology.
2.PH value.It refers to the concept of liquid pH. The more acidic the solution, the lower the pH value.In order to prevent the digital printer ink from corroding the printhead, the PH value should generally be between 7-12.
3.Conductivity.In ink, the conductivity value is used to reflect the level of salt in it. In general, the salt content should not exceed 0.5% to avoid clogging due to the formation of crystals in the nozzle.
4.Dispersant: A kind of surfactant, its role is mainly to improve the physical properties of the digital printer ink surface, enhance the affinity of the ink and sponge and wettability. Therefore, the ink that is generally stored and conducted through a sponge contains a dispersant.
When selecting ink, it is recommended to choose original ink or recommended ink from the digital advertising printing machine manufacturer. This will not only guarantee the printing work, but also ensure the normal after-sales service.