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Rioch print headDuring 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.

UV printer

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.

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The Types and Characteristics of UV Ink

For those who use UV flatbed printers and have just entered this industry, they may don’t know the types and characteristics of UV ink.Today,we are introducing it for you.

UV printer

1.Water-based ink

The cost of water-based ink is very low with no pollution and the color is very bright. But due to the slow evaporation rate of water, the screen of sprayed water-based ink is not easy to dry and is absorbed by the medium.

2.Solvent-based ink

Eco-solvent ink is a kind of intermediate between water and oil. It can be sprayed on the media to print on the coating, so that the effect is bright, adhesion is very strong! However, solvent-based inks have no white ink (white ink is immature). Printing on dark media is a big problem.

UV ink

3.UV ink

As a special solvent UV ink, it cures immediately after exposed to UV light, firmly adheres to the surface of the media, and does not dissolve in water or other organic solvents. It is very suitable for UV printer users.

On the one hand, it solves the problem that water-based ink is not easy to dry, it also solves the huge defect that the Eco-solvent ink cannot print white ink.And it can also print embossed embossing and other effects, which greatly expands the application field of ink-jet technology and enables UV flatbed printers.  Any material can directly print, but the ink is also defective. There is no water-based ink and weak solvent ink in the curing ink from beginning to end. The ink is bright and bright, so the user must buy the UV ink with the product they are printing. It is more appropriate to combine and discriminate which kind of ink one should buy in order to avoid unnecessary trouble and cost.

sublimation printing

We supply kinds of sublimation inks with high quality in a competitive price. If you have any demand,please feel free to contact us.

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