Spray coding technology has been widely applied in various industries,which can print important information such as text,numbers,and graphic codes on products,as well as on the inner bags or outer boxes of packaging.Currently,most inkjet printers on the market are expensive and have high maintenance costs for consumables,making them unsuitable for most users.This article proposes a universal form of inkjet printer design for the above phenomenon,which has low production cost,stable and reliable operation,and high cost-effectiveness.This plan can be used as a reference or option for personnel with such need.