During the use of a digital UV printer, there may be a print head clogging situation, resulting in abnormal printing. How to clean UV printing head become an important topic of printer users. Because most of our machines use Ricoh printheads. Now, let’s talk about how to clean Ricoh print head.
From the overall structure of Ricoh print head, we can see that it has two filters and two exhaust pipes on a Ricoh print head, and one printhead has two color channels. It is to say, one filter and one exhaust pipe control one color channels. Ricoh printhead cleaning steps are as bellow:
Step 1: Remove the whole printhead (including filters) from the UV printer and unscrew the plug of one exhaust pipe.
Step 2: Use a syringe to draw cleaning fluid and inject the fluid into the printhead from filter on the same side of the exhaust pipe. The cleaning fluid and ink will flow out from the exhaust pipe opened.
Step 3: Repeat the above operations several times until the liquid flowing out is transparent.
Step 4: Draw a tube a air and inject it into the same filter, and then screw on the lid of the exhaust pipe after the residual liquid is discharge.
Step 5: Draw cleaning liquid and inject it from the same filter, and the cleaning liquid will flow from the nozzles this time.
Step 6: After the liquid that flows from the nozzles becomes transparent, and then inject air the filter to discharge the residual liquid, just like the way we mentioned above.
Step 7: Clean the another print color channel with the same method.
Step 8: After the cleaning is finished, clean the printhead surface with a clean dust-free cloth.
Notice: During the cleaning process, don’t let the cleaning liquid contact with the plug of the nozzle cable.
Printing heads is the most core component of a digital UV printer, a good maintenance of printhead can improve the machine’s use experience, be conducive to the smooth progress of printing business, as well as extend the working life of the print head. Not only for Ricoh print heads, but also for all kinds of other UV printing heads.