Due to the different principles of different types of machine nozzles, the inkjet printing inks used are also different. If the ink is selected incorrectly, the nozzle damage will be unavoidable. At present, the ink can be roughly divided into:
Suitable for HP or NovaJet indoor models, because the dye sublimation ink contains a high foaming agent, after the ink head is heated by the resistance of the ink, it will cause the ink to bubble in a very short time, and then squeeze the ink out. However, under the changes of high and low temperature for a long time, the ink head becomes lossy in the severe environment of high heat and high pressure. Due to the successful development of alternative inks, the cost is lower, but the wear of the nozzle is an irreducible cost. Generally, the water content of the ink used in thermal foam inkjet printers needs to be between 70% and 90% in order to keep the nozzles open and cooperate with the role of thermal energy. This means that sufficient time must be allowed for the ink to dry on the medium without spreading out, so it is more equipped with a drying device on the machine to avoid damaging the picture.
Suitable for models with Epson printheads, including the latest Mimaki JV-4, Mutoh RJ-8000 and Roland FJ-500 / 600 series. The piezoelectric nozzle uses a piezoelectric crystal to strike and vibrate a diaphragm fixed in the print head, so that the ink in the print head is ejected. Because it is a "cold spray", the nozzle does not need to be replaced regularly. However, the early ink price was higher, so the early indoor production cost was higher than thermal foaming. The recently launched Mutoh RJ-8000 series and Mimaki JV4 series use the third-generation Epson nozzle. Therefore, the printing speed is greatly improved, and the micro-piezo ink is also reduced to less than 0.25 rmb / ml, so micro-piezo is the mainstream model for indoor production.
Suitable for models using EPSON printheads, including the latest MIMAKI JV-4, MUTOH RJ-8000 and Roland FJ-500 / 600 series. However, because it must be covered with film, and the production of outdoor technology is
complicated, and the cost is high, it does not become a mainstream ink.
Only applicable to MUTOH RJ-8000 / RJ 6000 and ROLAND FJ50 / 40/500/400 and MIMAKI JV2 series. Due to the limitation of the micro-piezo print head, the outdoor weathering is about 6 months. Because the oil-based ink does not need to be coated and can be coated with light box cloth, it is widely used in indoor production and outdoor replacement (about half a year).
Eco-solvent ink suitable for large inkjet printers and the latest extreme FY-6180. The ink is strongly corrosive and can directly penetrate into the interior of the light box cloth and PVC material. Therefore, the nozzle is required to be high. A special solvent-based nozzle is required, and the auxiliary equipment of the nozzle is also required. EPSON Nozzle, and currently only British XRRA and American companies have the ability to produce the nozzle. SALSA, Wittur and the latest Extreme FY-6180 all use this type of nozzle. And equipped with a fully automatic ink filtration system, so they are professional outdoor production equipment, outdoor weathering guarantee can also be up to about two years.