Epson F6370

[Margrit]

I have a F6370 printer and we use it for chromolux metal printing. had the machine for 3 years. We use the printer everyday but not 8 hours a day. I had to replace the the yellow ink a few weeks ago. After after about 3 weeks all of sudden all my production had a severe green cast. After some trouble shooting I figured it was the yellow ink that I poored in must have cause the green shift. We are using epson edge software and I noticed in the output section there is a tonal range and you can go into the yellow channel and correct for the the yellow similar to curves in photoshop. I am also in process to create a custom profile to compensate for the shift. My question is. I am wondering if I should flush the printer and start fresh. The printer has been bulletproof and I don’t wanna have to deal with shifts all the time. I ordered a fresh set of ink but I also have a lot of expired ink left. I don’t know if I should use it or throw it away it expired in 2022. I noticed there is a very short expiration date and the stays in the machine for a long time. Also I am thinking about agitating the inks weekly, we do agitate the black once a week. Any thoughts on flushing out the inks and start fresh?

 

[edcooleyar]

We have seen severe color shifts on our 6300. Sometimes it happens between two print jobs on the same day. We use ergosoft and found a recalibration usually corrects the issue. We now include a test print with each job that we sublimate to check for color shifts. We are in the process of replacing it with a 6400 series with light inks but that has been problematic as well.

 

[Margrit]

I am still curios what causes the shift. Are the inks sitting in the machine for to long? There are always ways to work around it, I would like to find the cause. We did create a custom profile but it did not help.

 

[Andrew Heiner]

100% the inks settle. When you pour in a new bag of ink it kicks up what has settled. The yellow gets the worst if it.
Add stir sticks to the other 3 tanks.
I would clear out the tanks & add new ink.

 

[Margrit]

I think that’s what I am going to do. Thank you. I like your ideal of adding stir sticks to the other 3 tanks.