1. When there are problems with print quality, what are the common causes?
According to our experience, when there is a problem with the printing quality of inkjet equipment, it is generally caused by the following main factors:
1. Problems caused by the inkjet printer
Printing equipment is generally divided into two types of indoor and outdoor machines. The printing width of the indoor machine is generally less than 2 meters. The manufacturers are mainly EPSON, HP, Roland, Mimaki, Mutoh, and Novajet. The printing width of the outdoor machine is generally more than 2 meters. , Jet-I Hewlett-Packard, Sai Angel, Nur, etc., domestic brands include Yaselan, Runjiang, Xian, Liyu, Taiwei, etc. Of course, the above is a more general division. At present, there are two levels of quality differentiation in the market. The cost and the pressure of competition have caused some brands of inkjet printers to have uneven quality, mainly reflected in the unstable performance of the inkjet printer or the cut-off in the configuration, which of course will directly affect the print quality of the device. .
2. The quality of inkjet supplies, it affects the quality of inkjet printing
Printing supplies are divided into printing inks and printing media. Only when the inkjet printing cloth matches the inkjet printing ink can high-quality inkjet drawing painting be obtained, which is especially obvious in the production of weak solvent inkjet printing. The printing medium is divided into external lighting and internal lighting. Varieties include inkjet cloth, light box cloth, adhesive film, film, light film, photo paper and so on. Well-known brands include special media for Aili, 3M, Nice, Nal and related models. Due to the wide variety of related media involved, the effects and prices also vary. The influence of the quality of inkjet consumables on the quality of inkjet printing is obvious to all advertising peers. Inferior quality consumables will not only affect the print quality, but even lead to damage to the printing equipment and nozzles in severe cases.
3. The operation technical level of the inkjet personnel
The level of operation technology, whether it is color correction printing in the early stage or docking processing in the later stage, can affect the final effect of inkjet printing. At present, in the domestic inkjet industry, the most important part of the inkjet process-color correction, basically still needs to be manual. On the terminal computer of the inkjet system, the drawing operator must perform computer proofing and color proofing based on the machine's performance at the time, the inkjet fabric and ink used to determine the final color effect. This artificial subjective operation inevitably brings deviations in the production process. In order to make up for such deviations, the inkjet company will continue to provide employees with targeted technical job training, so that the inkjet work can better meet the various needs of customers. In general, skilled employees can call up richer colors in a limited range of colors and find out more accurate color values. This will undoubtedly create more colorful and creative outdoor advertising and provide the most powerful technical support. Therefore, we emphasize the importance of the operator's technical level and experience directly when there is a problem with the print quality. A high-level inkjet operation technician is also a very scarce talent.
2. What should users do to make the nozzle and ink work more effectively?
The nozzles of inkjet printers are generally very expensive and precise. A large number of tiny nozzles are distributed on the wide nozzles. So many nozzles directly face the printing consumables during printing, and are exposed when not working. Because the nozzle aperture size is equivalent to the dust floating in the space, if the working environment of the inkjet printer is poor and there is a lot of dust, the small nozzle can easily be blocked by the dust. If the indoor temperature is too high, not only the mechanical parts of the expensive inkjet printer are easily corroded, but even the nozzle is difficult to ensure that it will not be corroded. The temperature change range of the working environment of the inkjet machine should not be too large, because the inkjet machine contains not only a large number of metal parts, but also a large number of engineering plastic parts. The nozzle aperture is very slim. If the ambient temperature changes too fast, the thermal expansion of the components will cause excessive wear on the mechanical components. The change in the nozzle aperture size will also affect the printing quality of the ink.
The problems encountered in the work of inkjet printers mainly focus on ink and nozzles. The ink consumption of the inkjet printer is very large. After using for a long time, the ink will affect the nozzle and the printed image. The wear and ink stains that occur when the nozzle works for a long time also affect the quality of the printed image. Therefore, the correct selection of ink and the correct maintenance of nozzles are problems that every inkjet printer user cannot ignore in use.
Therefore, users should first make a good choice of ink. The quality of the ink can determine the quality of the printed image, and can also determine the service life of the nozzle. The manufacture of inkjet printer ink is extremely complex, whether it is original ink or compatible ink. As long as it can meet the quality requirements of continuous printing. Therefore, for inkjet printers that consume a lot of ink, we can choose non-original high-quality inks that are “good quality and cheapâ€. The second is to do a good job of equipment and nozzle maintenance. The nozzle is most likely to block the nozzle hole due to long printing time, improper use of ink, or left unused for a long time. Of course, the use of poor quality ink will also cause clogging of the orifice and affect the print quality. In severe cases, the entire nozzle will be scrapped. Although the manufacturing process of the nozzle is fine, its structure is not complicated. The surface directly in contact with the printing medium is dissatisfied with many tiny round holes. The nozzle is connected to the nozzle inserted into the ink cartridge. From the nozzle to the nozzle and around the nozzle, toner or impurities with strong adhesion often remain, as long as they are removed With these toners and impurities, the print head can resume normal printing.
For inkjet printers that have been out of service for a long time (such as the National Day holiday), it is best to clean the entire ink supply system of the inkjet printer with cleaning fluid and place it to avoid clogging of the nozzles. Most of the seemingly scrapped nozzles are only blocked by the nozzle holes and cannot work, and only a simple rinse can restore their printing function. For normal printing, but the lack of strokes or colors, or the slight clogging of the image at high resolution, such as the slight clogging situation, generally use the nozzle cleaning program that comes with the printer to solve it. However, it should be noted that if a slight nozzle clogging, such as lack of strokes or poor color, is found, it should be cleaned as soon as possible with a cleaning procedure. For the printing process, the machine frequently refills the ink or cleans the nozzle holes, but the printing effect is still poor or the nozzle is seriously blocked. The machine cannot refill the ink, or the inkjet machine refuses to work. Only manual cleaning method can be used. Although the manual cleaning method is not complicated, it should not be too frequent because of the need to disassemble the nozzle. The manual cleaning method is to use a syringe and a piece of rubber tube that can be placed on the needle, cleaning fluid, a magnifying glass about ten times, a hard plastic knife and other tools. After removing the spray head, use the magnifying glass to carefully find the nozzle that is blocked by the spray hole, and then use the syringe to pour the cleaning liquid into the spray hole. If necessary, use a hard plastic knife to scrape off the residue on the spray hole. Be careful not to contaminate the electrode during use.
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