In recent years, with the rapid development of IOT technology, most manufacturers need to give more and more variable information to cartons. Due to the large variety of products, the old method of printing product information on cartons in advance by cartons factories can no longer meet the needs of enterprises' daily production changes. Moreover, with the development of e-commerce logistics, carton packaging is based on the function of the original container. In order to realize the management of product anti-counterfeiting, anti Cross shipment and traceability, more and more enterprises require that each carton be printed with a unique bar code or two-dimensional code. Large character inkjet printer and small character inkjet printer can no longer meet the needs of manufacturers. In order to achieve the traceability and management of one carton, one code, the manufacturer needs to add new processes and use variable inkjet printing equipment to inkjet the carton.