I don't have data for you to analyze, not before and after nozzle check prints; only after and they are flawless without tell-tale signs.
But you've made up your mind what the problem is, despite your lack of data!
And yes, I don't think I can look at nozzle check print lines and see that the ink amount is 10% less than "normal".
But despite this admission, you've made up your mind what the problem is!
"Normal" being what? My memory of how it looked in the past?
Had you considered, as many of the people who've attempted to aid you have, kept a normally reported (and then print) nozzle check, you would know. But despite this admission, you've made up your mind what the problem is!
I don't save my nozzle check prints.
Maybe you'll consider that in the future.
Even if I had, I don't think I would be able to put them side by side and detect a 10% difference in ink.
You're excellent at assumptions. After admitting what you don't know or what data you didn't keep! Sloppy but consistent.
You think you can?
He answered the question you will not accept but some of us will.
I would love to see you demonstrate that. How about 20 or 30%? I'm skeptical.
Yes, you are; predetermined concepts as I've outlined. Here in this thread, and the other's provided. The paper trail is there.
I have a hunch,....
Haven't you assumed enough here? Yes! Less hunches, more actual data. Easier for you to guess, assume and make hunches.
Also, we are not talking about color variations, but intensity variations of the same color and the human eye isn't that sensitive to it, even in side-by-side cases.
Don't go down a a greater path you know so little about; color appearance, color management.
By the way, my background is in R&D, quality/reliability engineering and failure analysis in the electronics industry.
Even if true (difficult to believe), not designing Epson printers, accepting facts or supplying any of your own.
I have used inkjet printers for over 30 years and I spent the last 10 of my 27 year career at Hewlett-Packard at their inkjet printer division in Vancouver, Washington.
I will assume (and I rarely do), the restrooms at that division were pretty clean thanks to your work there.
Amazingly, you don't own an HP ink jet. Not amazingly, you don't know much about the Epson printer you own.
By your own admissions here!All that experience at HP with ink jets, you're here
and over at PhotoNet asking for advise then not taking any. More like seeking attention.