If printhead of DTF printer is blocked, it will seriously affect printing progress. At this time, first check whether 70cm DTF printer has used up ink of a certain color in ink cartridge, and then consider following reasons.

1.Ink tube enters air or there are impurities in print head. solution is to start automatic cleaning program of DTF printer and clean print head one to several times (note: printhead test line must be printed after each cleaning to observe cleaning effect). Or turn off 70cm DTF printer and stop using it for a few hours to see if situation improves.

2. Small air bubbles remain in nozzle. At this time, print head of DTF printer should be cleaned to discharge small air bubbles.

3. Lines that appear in print graphics are related to print mode selected by user. When printing in ink-saving mode, output picture is rough and has lines. The higher resolution, the better output graphics quality. This shows that graphics output is not only related to printhead, but also closely related to graphics itself and print settings.

4.Exclude above reasons, and start cleaning program to clean print head, but if it still cannot resume normal printing, it may be because print head has been scrapped.

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