[QUOTE=walkerblackwell;13417]There are many factors that can lead to nozzles dropping out and only 1 of them is a clog. The key to making PiezoFlush work is to determine if it’s a mechanical error (cleaning assembly, damper assembly, pressure system, or cartridge block) or if it’s a clogging issue (pigment stuck at the intake manifold spike of the head or inside of the nozzle channels). PiezoFlush is only for clogs, not mechanical fixes (springs, pumps, circuit boards).
What many people fail to realize is that most often with a x890 and x900 series printer, it’s a co-failure of the damper and cleaning assemblies together that will purge air up into the print-head during a clean. If these “airated” nozzles are not noticed and the user prints with the head in this state, those nozzles can short out very easily.
The other common mis-conception is that dampers last forever. They don’t. They need to be changed out every year or so because they have filters in them (just like the oil filter in your car) that will inevitably fill with crud even using OEM ink. PiezoFlush can bring back a damper somewhat but only for a short time.
When epson “re-manufactures” a printer, they usually just replace the dampers, cleaning assembly, and sometimes the head and put it on the re-furb site for sale. 90% of the time when an Epson tech comes out to fix your printer, they replace these three parts and call it a day (essentially they do what the refurb team does).
So, PiezoFlush is there for two reasons. To bring back a printer that has sat for a long time and simply dried out (but which still has functioning head and cleaning units etc), and to let a printer sit gracefully for a long time off (if you are going away for several months to a year and don’t want the printer to dry out).
Before I came to work here at IJM about a year ago, I worked at several non-profit photo centers as lab manager (and before that as a printmaker). I would take free “dried out” Epson printers and bring them back to life with PiezoFlush. But if their heads died [I]during frequent use[/I] this was an indicator that something else was wrong with the printers and not just ink clogs.
I hope this answers your question about PiezoFlush. It’s very useful, but Epson printers all have different mechanical design flaws from model to model and often those flaws show as “clogs” even though it’s something else entirely.
Thank you for the follow up.
I know most of this and know a lot can factor into a channel not printing anymore.
It was just a weird coincidence that these colors kept going on my 3880 along with my 7890, over the years.
I know Piezoflush isn’t a cure all. I have in the past taken apart other 3880 and have got them to work again. At this point, I just don’t have the time and wanted to see who has had success with Piezo flush and how they went about it. Sometimes you get a bit of information from someones experience that you either over looked and just didn’t think of that helps.
As for the most recent change on my 7890 when yet again the Magenta just stop working. The tech only changed out the head this time instead of the what they did before where he changed out the print head, ink selector and the capping station. So this time it was the head and not a possible damper issue. As stated a couple of times, its a weird coincidence that it’s the Magenta, that has been the problem, along with the Magenta and Yellow on the 3880s.
Right now I’m about 6 months in with only using Epson Inks on our 24" printers. The 3880 was currently getting through the rest of our ConeColor Pro Ink and my other 3880 has started with a different third party ink. I’m basically working towards seeing if the ink was the problem and I feel like I can make that call after about a year and a half. If my machines don’t show that same problem, I will have to go with the ink is what was giving me the problem. Or again, I just had faulty 3880’s dropped on me.
Just to give you an example of why I see there is a problem.
My first 3880 was purchase in 2010. It lasted for three years. Two out of the three I was using a different third party ink (pigment only). I started using ConeColor Pro Ink, a year later it had an issues with the LC. I sold the machine to someone as is. He actually contacted me back and said he switched out the dampers and the machine was currently working like new again. So that was said damper issue you stated.
I have had techs that have came to the print shop to repair our machines, tell me you should at least get three five years without problems. I agree on this and I also know that’s not always how these machine work.