The work aims to solve the problem that the ink spills into a lump when the inkjet device was stopped and started again when ZJ17 cigarette machine was used to produce cigarette products with online steel steel printing, resulting in unclear steel seal printing or high scrap rate of steel seal printing color difference. A new inkjet device was developed from the aspects of ink blocking mode, excess ink storage, ink nozzle channel shape and gas path control. It not only ensured the supply of ink in normal production, but also realized the effective control of ink jet quantity when the equipment was repeatedly started and stopped, so that the discharged cigarette quantity of unclear steel seal was reduced from 0.229 kg/box before optimization to 0.016 kg/box, and the discharged cigarette quantity of steel seal chromatic aberration was reduced from 0.219 kg/box before optimization to 0.013 kg/box, effectively reducing the amount of discarded products. The device has significant effect on improving the quality of cigarette products, reducing material consumption and reducing labor intensity, and can effectively solve the widespread problems in the production of on-line printed steel seal cigarette products in the industry.