In the specific design of many metal inkjet printers, there are also non-contact designs. Its main function is to have a stronger ability to work continuously. More and more customers require specific codes (letters) to be printed on the product packaging boxes. Number or barcode) for inventory management during receipt and storage. If the customer has a machine-readable receiving system and enters the barcode content into the internal system by scanning, then the customer will have very specific requirements for the type and content of the barcode. The packaging coding of food and medicine focuses on the practical basic functions of the product. Not only is it more demanding, but the use of materials in a safe environment is also very important. On the basis of ensuring the safety of the materials, it is important In the process of playing, it will not cause pollution, not directly touch the coding, but also has a good practical function, especially when used in the production line, it is more efficient, more convenient to operate, and the safety standards are also very strict. After understanding the coding requirements and the base of the packaging box itself, the last step is to understand the possible packaging box coding technology and its advantages and disadvantages. Packaging box coding technology is divided into two categories: contact and non-contact. Contact printing packaging box coding started with contact printing, and this technology is still a viable solution for appropriate applications. In contact printing applications (such as pre-printed boxes, labels, and roll printing machines), there is physical contact between the box and the printing equipment. Among all non-contact printing methods, labeling is the most flexible method. The label can be printed outside the production line, or online, and then pasted on the packaging box. Although some labels are manually pasted, this method is usually only suitable for small batch applications. Manufacturers are increasingly using label coding and labeling (LPA) systems to print labels and attach them to each box. Advantages: The label can provide high-level, high-resolution printing quality. The labeling system can print codes that are always clear and easy to read. These codes can be read manually (manually) or mechanically (such as a scanner, camera or verifier). Since the code is created digitally, the label is also the only contact printing method that can provide a variable data solution. Disadvantages: Labels are the most expensive printing solution, and sometimes even more expensive than all other alternatives. Compared to other contact or non-contact methods, tags require more intervention because they are replaced more frequently, which in turn affects the uptime of production. Most label printing systems also require the use of ribbon, and the ink in the ribbon is transferred to the label. Both labels and ribbons must be replaced regularly. The frequency of replacement depends on the production volume. It may be replaced multiple times a day, and production needs to be interrupted when the labels and ribbons are replaced. In addition, labels and ribbons are often replaced before they are completely used up, which increases the amount of wasted labels and ribbons, leading to increased label costs. Packaging boxes are usually used to save costs, such as shrink bags; or for brand display purposes. With proper design, the human-machine interface (including hardware and software components) can and should be able to simplify data entry and help prevent operators from An error occurred during code input and job selection. At the same time, we firmly believe that by redesigning the coding process structure flow, we can minimize operator intervention, thereby reducing the risk of errors, and even automatically distribute the correct codes to the corresponding inkjet printers that perform the corresponding tasks.