daseri

Hi Trevor! I was working this last weeks on the UV printer (I’ll post all pics and explanation when I finish) I’m in the last stage I was change ok the ink system for all the UV components but the ink eats my header nozzles!!. The piece where the dampers go broke in a few hours with the ink contact. I don’t understand why because I use a dx5 head and the ink is formulated for the dx5 head It’s crazy! Had you any problem with the header? Regards David

Yes! For the moment I'm working in mechanics. I'll post some pics when I've some advances in the project. If there are cartridges in the market, maybe it's because the plastic holds the ink... First I go to make some study with the normal ink so I've a hard work before add UV ink

By the way, I'm thinking .. The ink cleaning system has problems with the ink? I mean the sponge under the head and the whole system that is plastic. This would be a bigger problem

I have assumed that there are ink cartridges compatible with UV ink, and all this components compatible with the ink, rubbers, valves.... (I had thought of these compatible cartridges) https://es.aliexpress.com/store/product/UV-refillable-cartridge-for-Epson-Stylus-Pro-4800-4880C-4000-7600-9600-4400-4450/2407056_32763747110.html?spm=a219c.search0104.3.8.76b36e70QHYRJU&ws_ab_test=searchweb0_0,searchweb201602_2_10152_10151_10065_10344_10068_10547_10342_10343_10340_10548_10341_10696_10084_10083_10618_10307_10820_10821_10301_10303_10059_100031_524_10103_10624_10623_10622_10621_10620,searchweb201603_12,ppcSwitch_5&algo_expid=1e860b3c-29e3-4118-99f6-60f025a9074f-1&algo_pvid=1e860b3c-29e3-4118-99f6-60f025a9074f&priceBeautifyAB=0 From what I understand the problem is that you think that the ink can not work like a normal ink because pressure? Or what you mean is that due to the pressure leaks occur in the joints? If the problem is the pressure and material of joins i think I can make all circuit with compatible materials. I'd assumed that the uv compatible dampers will have the same function that the original ones, but if it´s no true I've a new problem Is there any information of the materials (kinds of plastics that the uv ink will eat? If I have to make a new system, I may save work by directly acquiring something like this, or make something similar: https://es.aliexpress.com/store/product/UV-Bulk-Continuous-Ink-Supply-System-CISS-Assembly-1-Liter-for-Roland-Mimaki-Mutoh-Epson-Lecai/1184895_32840960442.html?spm=a219c.search0104.3.2.3b091177IWajxI&ws_ab_test=searchweb0_0,searchweb201602_2_10152_10151_10065_10344_10068_10547_10342_10343_10340_10548_10341_10696_10084_10083_10618_10307_10820_10821_10301_10303_10059_100031_524_10103_10624_10623_10622_10621_10620,searchweb201603_12,ppcSwitch_5&algo_expid=6be15f7a-9927-42c7-8838-e65a7d70d4ab-0&algo_pvid=6be15f7a-9927-42c7-8838-e65a7d70d4ab&priceBeautifyAB=0 Thank you very much for your atention!!

Last pics didn't attach correctly. This is the ones.

I'm thinking on this 2 components. The needle to insert the cartidges (replacing the plastic original), and the manual valve to replace the automatic spring valve (to close circuit in case of replacing the cartidges). Do you think it can work?

Hello again! Thank you very much for your quick response. Your post has been a great help, especially warning. My initial idea was to try to replace the original components with others that are the same but resistant to UV ink, I have already bought the dampers, the pipes the bronze bushes and UV ink refillable cartidges. Only the needles and their springs and the white piece seen in the photo would be missing for now. Maybe I can machine these parts in aluminum. Do you think it would be viable? In principle the ink would only be in contact with that piece, the other pieces of plastic should not come in contact unless there is a leak. Do you see it viable? It seems complicated to replace the system by another parallel for the issue of pressure of the ink, but if it has to be so I will have to consider it.. Anyway, I do not understand how the pressurized ink system makes the original system. Does this happen inside the original square cartridges? If so, maybe it's a matter of making some pieces that fit in the mouth of the cartridge ... What do you think?

Hi! It´s David from Spain! I have been reading your entire project and the truth is that it is helping me a lot. I am converting an epson 7600 to flat bed UV ink and I realized that I had to change all components of the ink circuit to UV ink resistant components. I have a question about which are the plastics that the UV ink eats, only some types of plastics are eaten? For example, the needles where the cartridges are housed, which are black plastic, will be a problem? or should we change this too? In principle it seems simple to change the hoses, the connectors and the dampers of the system by UV-compatible, the only thing that is not found is the part in which the cartridges are housed. Those in the photo.