Gravure online code spraying device

A gravure on-line code spraying device comprises a rack, a paper conveying mechanism, a jet printing mechanism and a control circuit, the jet printing mechanism is electrically connected with the corresponding output end of the control circuit, and the gravure on-line code spraying device is characterized by further comprising a first industrial camera used for detecting a code spraying area on paper; the first industrial camera is electrically connected with the corresponding input end of the control circuit; the first industrial camera is located in front of the jet printing mechanism in the paper feeding direction of the paper conveying mechanism. The jet printing mechanism comprises at least one jet printing head, the jet printing head is provided with a plurality of nozzles, and the arrangement span of the nozzles in the transverse direction is larger than the transverse size of the code spraying area; and one jet printing head in the jet printing mechanism corresponds to the transverse position of the f