Many users should have heard of large-character inkjet printers, and many people would think that this is a generic name. In fact, this is because the overall market share of large-character inkjet printers is not as large as that of small-character inkjet printers and is not widely known. Today, inkjet printer manufacturers and inkjet printer prices will share some knowledge about large-character inkjet printers from the following three aspects. According to the type, large-character inkjet printers can be divided into two types: online continuous non-contact type and handheld contact type: we use various microelectronics technology to eject very small ink droplets from the nozzles, and the ink droplets pass through the air. Finally, it falls on the surface of the printed object to form a pattern or text. Coding by spraying, since only ink droplets touch the surface of the printing object, it is possible to spray the moving surfaces and surfaces of different materials successfully, and the coding of changing information can be realized. Continuous type refers to the coding of integrated continuous change information on the production line, so the time, date, batch number and similar data can be changed online and in real time. In terms of speed requirements, using inkjet coding technology, objects with a moving speed of less than 6 m/s can be used for inkjet printing, which is sufficient for most production processes. According to the working principle, large-character inkjet printers can be divided into valve type and pulse type: in the outer box packaging, there are many large-character inkjet printers that apply the valve principle. A valve type inkjet printing device includes a low-pressure ink system, an electronic control cabinet and a nozzle connected with the control cabinet through a flexible conduit. The ink in the ink system is sent to the nozzle in the nozzle through a simple on/off valve.