Zhuhai Huacai attended the 2017 TPF Shanghai International Digital Printing Industry Exhibition_HuaCai New Materials Technology Co., Ltd.

Seiko SPT nozzle series Produced by the Seiko Electronics Group of Japan, Seiko was first known all over the world for the production of precision clocks. Now it has considerable strength and foundation in the production of cartridge piezoelectric nozzles, and its stability is just like its Seiko watches. The same quality is superb. SPT nozzles are finally designed by combining the performance advantages of all previous nozzles. While focusing on the previous advantages, they are also mainly reflected in: a. The main performance is the all-stainless steel design, with super durability, and there are 510 pipes for each nozzle. b. Nozzle voltage can change with temperature, so it can be troubled by other nozzles due to temperature and other external factors. c. The data port of the print head can adapt to different printing software, and the print density is more dependent than the previous print head? d. It can be produced in multiple modes. The ink dot particles are 35PL and 12PL, the highest standard precision is 720DPI and 1440DPI, and the color saturation is impeccable. e. The print width of the print head is 75mm, which is 4 times that of the ordinary print head, and can output quickly. f. It has a wide range of applications and is currently used in industrial and commercial printing. g. The cost is low and it tends to be popular. At present, the brands that mainly use Japanese Seiko SPT nozzles are: Feiteng, Xtreme, Jinghui, Gongzheng, etc. Japan Konica nozzle series Konica sprinklers are a newly promoted Japanese brand. Its company first focused on imaging and just stepped into the production of piezoelectric sprinklers. It has also been successful in hardware facilities, but it has too much publicity on domestic agents. Among them, KonicaMinolta 512 print head, according to scientific calculation, its ink dot size is only 56/28PL, and its accuracy is about 720DPI. However, its publicity as 42/14PL has caused many consumers to misunderstand. In addition, its ink is not provided by professional manufacturers. Supervision on the production line is not very strict. Among them, the only successful inkjet printer using Konica nozzles is Yasseran, but due to the brand effect, the price remains high in the industry, and there is no certain flexibility in after-sales service. At present, the brands that mainly use Japanese Konica nozzles are: Yaselan, Aowei, Cheetah, West, Mejet, Blueprint, etc. British XAAR (Xaar) nozzle series The main nozzles produced by XAAR are XAAR128, XAAR500, XAAR126 and XAAR382, XAAR600 and other models. Among them, the 126 and 128 nozzles were one of the most widely used nozzles in China in the early days. At present, the 382 (proton nozzles) and 600 nozzles are mainly used. At present, the brands that mainly use British XAAR nozzles are: Cyber, Liyu, Mejet, etc. American Spectra nozzle series Spectra first produced thermal foaming nozzles for office printing, but eventually gave up due to the emergence of HP and switched to the development of industrial piezoelectric nozzles. At present, it has achieved considerable success in this market. Its print head is characterized by small ink droplets (high corresponding accuracy), very high ejection frequency (fast speed), and is not very picky about ink. Wittur is the first brand to adopt Spectra print heads and is also the most popular in the global market. For the well-received inkjet printers, Spectra’s problem is that the price of the print heads is too high. Although Wittur has sold hundreds of units in China, several domestic inkjet printers using Spectra print head manufacturers have not yet become mainstream products and are mainly exported. It is a compact and lightweight container nozzle with stainless steel packaging. All components can be moved quickly. It is suitable for printers with superior performance. The main models are SpectraSl-128 and Spectra Nova/80LQ. Among them, 128 series nozzles have many similarities with XAAR128+ nozzles in terms of stable performance and usability. However, before the successful development of domestic inkjet printers for the Nova256 series, this type of nozzles were basically used exclusively by the inkjet printer manufacturer-Witt Company. From the perspective of the internal structure of the print head, the XAAR print head uses Teflon material in the part where the print head directly contacts the ink, and the Spectra print head uses a steel structure. The ink has a certain corrosion ability. Due to the steel structure of the Spectra nozzle, the corrosion resistance of the nozzle to the ink is greatly improved; the ink is pressed out of the nozzle, and the strong pressure easily deforms the diameter of the nozzle. The steel structure of the Spectra nozzle is better than the XAAR nozzle Teflon The inner coating of the material is more pressure resistant. Therefore, Spectra nozzles have a longer service life than XAAR nozzles, which has changed the view that nozzles are con

Whether the mold system of the digital printing equipment can work normally and stably on the machine directly determines the product quality. If the continuity is not good, it will cause insufficient ink supply, resulting in ink cut during the printing process, which affects printing to a large extent the quality of. So what are the factors that affect the fluency of printing ink? 1. Ink particle size The particle size of printing ink has a great influence on the stability of the ink system. Because the average diameter of the nozzle is only about 50um, it is easy to block the nozzle when the particle size is too large; the average particle size of the ink should be negligible compared with the pipe and nozzle hole, so as to ensure good flow properties. Therefore, when the ink is configured, it must be filtered at 1um and 0.5um (the pore size of the filter membrane is specifically adjusted according to the type of ink) in order to control the size of the particle size. 2. Moisturizing properties of ink The moisture retention and stability of water make it difficult for its viscosity and surface tension to change with temperature, which promotes the formation of a thin and brittle film at the nozzle, which is easy to dissolve without clogging when inkjet printing again. The ink is mainly based on water-based systems, and the solvents used are mostly water-soluble organic mixtures. Commonly used water-soluble solvents are alcohols, polyols, etc. These organic mixtures can improve the stability of the ink. 3. Ink wettability The wettability of the ink is related to the surface tension. The surface tension and dynamic surface tension of the ink will affect the wetting of the pipeline and the nozzle, and the final wetting and spreading on the printing medium. If the surface tension is too high, it may cause insufficient wetting and insufficient ink supply; if the surface tension is too low, that is, if the wetting is too strong, it may cause the ink droplets to gather on the print head, causing the ink dot to break. Appropriate surface tension is the key factor. Generally, the surface tension is controlled at about 30-50mN/m. 4. Digital printing equipment and printing environment The pipeline of the ink supply system is not airtight. During the printing and placement of the ink, some water and low boiling point solvents will evaporate, which will cause changes in the viscosity and surface tension of the ink and other physical and chemical parameters, which will ultimately affect the ink’s performance on digital devices. Printing stability. Therefore, the digital printing equipment needs to be maintained regularly. The environmental temperature is too high or too low, and the humidity is too high or too low to a certain extent, which will also cause changes in the physical and chemical parameters of the ink, requiring suitable temperature and humidity. In northern China, humidifiers and heating equipment are required in autumn and winter; in southern China, air conditioning and other cooling equipment are required in summer and autumn. From this point of view, the factor that affects fluency is not a single individual, but a combination of various factors. High-quality ink and the perfection of external systems can fully reflect the fluency of printing ink.

Zhuhai Huacai attended the 2017 TPF Shanghai International Digital Printing Industry Exhibition

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Zhuhai Huacai attended the 2017 TPF Shanghai International Digital Printing Industry Exhibition

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