An ink supply device for an industrial digital printer

Abstract

The invention is applicable to the technical field of printer ink supply devices, and provides an ink supply device of an industrial digital printer. The ink supply device of the industrial digital printer comprises an inkjet print head; and the ink supply device of the industrial digital printer is further comprises an active ink supply path, an internal circulation ink path and an outer circulation ink path; the active ink supply path is provided with secondary filtering and is used for supplying ink to the inkjet print head; the internal circulation ink path is used for removing bubbles inthe ink supplied to the inkjet print head and preventing ink from flowing back to the inkjet print head through the internal circulation ink path; and the outer circulation ink path is used for pumping redundant ink back into the active ink supply ink path. According to the ink supply device, the flowing speed of ink is increased, the air accumulation phenomenon of a filter is solved, the possibility of ink precipitation is reduced, and an unsmooth ink path is prevented; a traditional secondary ink box is omitted, the risk of wire breakage of the inkjet print head is reduced, smoothness of inkjet is improved, the backflow problem can be rapidly solved when ink backflow occurs, and the printing recovery time of the printer is greatly shortened.

Description

Technical field[0001]The invention belongs to the technical field of printer ink supply devices, and in particular relates to an ink supply device for industrial digital printers.Background technique[0002]At present, most of the industrial digital printers on the market use secondary ink cartridges to supply ink. Some manufacturers install filters under the secondary ink cartridges to prevent impurities, but the filters tend to accumulate air bubbles, causing the ink path to be unstable and leading to disconnection. Another part of the manufacturers remove the filter and directly connect to the nozzle, which will easily cause the nozzle to enter impurities and affect the life of the nozzle. In order to prevent precipitation, some manufacturers on the market have introduced negative pressure differential reflow and cartridge height differential reflow methods. However, the disadvantage of this method is that the circulation speed is slow, and it may take 4 to 5 hours to circulate 1 l...

AI Technical Summary

Problems solved by technology

But this kind of method has the disadvantage of slow circulation speed, it may take 4~5 hours to circulate 1 liter of ink, and the effect of ink anti-sedimentation is not very ideal.

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