AWB mode with R2880 suddenly shows reddish tint

I'm trying to be positive. I doubt that 9 year old ink cartridges would shake, much less print ;) In my circles, AWB has something to do with gun control.

I'm trying to be positive. I doubt that 9 year old ink cartridges would shake, much less print ;) In my circles, AWB has something to do with gun control.

 

I'm using fresh ink

Hi Frans,

 

Just a few thoughts.

 

Do you have another printer available? If so, try a test print on it. If the red cast disappears, the problem is in the printer. If not, it's time to look at the software (and ANY changes made to the computer just before the problem occurred. That would include updates to the Operating System.

 

I am a bit concerned about printing from PS/CS2. That is a very old program. Any changes to anything else on the computer could affect it. Do you have another program you could use to print?

 

The same B&W image prints in neutral B&W on my low-cost, general purpose HP Deskjet 6940.

The same B&W image prints in nearly neutral B&W on my HP 6940 using Windows Photo Viewer.

That would seem to indicate it is the printer.

 

Just to be sure, you might try printing on the Epson (both Black and White and Color images) using Windows Photo Viewer. If they prints with a red cast, it's either time to repair the Epson or replace it.

That would seem to indicate it is the printer.

 

Just to be sure, you might try printing on the Epson (both Black and White and Color images) using Windows Photo Viewer. If they prints with a red cast, it's either time to repair the Epson or replace it.

 

I did that and the cast is still there. It looks like the cyan cartridge is too low on ink to give it 100%.

Who is floundering here?

Frans is.

You want proof of concept that a nozzle check would not detect a slight reduction in ink supply?

Yes, got any? Seems not.

For argument's sake let's say the cyan channel supplies only 90% of normal causing a noticeable red color shift in prints. You claim you can look at the very thin, single-nozzle lines of the nozzle check print-out and see that they are 10% lighter than normal? Come on!

Don't attempt to argue, attempt to provide some actual facts.

It looks like the cyan cartridge is too low on ink to give it 100%.

It does, how? Assumptions and speculations thus far: floundering.

Edited May 3, 2018 by digitaldog

Frans is.

 

Yes, got any? Seems not.

 

Don't attempt to argue, attempt to provide some actual facts.

 

It does, how? Assumptions and speculations thus far: floundering.

 

Wow, Andrew! Saul Alinsky would have been soooo proud of you!

Wow, Andrew! Saul Alinsky would have been soooo proud of you!

Another of your wisecracks.:eek:

Another of your wisecracks.:eek:

 

How original!

Cross contamination maybe? Check that all the the bands of the nozzle check are the colors they should be, paying special attention to cyans (the opposite of magenta) and any inks next to magenta. Run a purge print and see if there's a color shift as you go down the page? Count the number of patches in the nozzle check (if the entire last ink in the chart is missing people have been known to not notice it because it looks complete at first glance).

How original!

"What annoys us about others may say more about ourselves than about them"-C.J. Jung

Cross contamination maybe? Check that all the the bands of the nozzle check are the colors they should be, paying special attention to cyans (the opposite of magenta) and any inks next to magenta. Run a purge print and see if there's a color shift as you go down the page? Count the number of patches in the nozzle check (if the entire last ink in the chart is missing people have been known to not notice it because it looks complete at first glance).

 

It's a good suggestion that will fall on deaf ears! See post #17, #22: he's absolutely certain the nozzle check is fine. And examine the assumptions in post #5 and #29; he's made up his mind it's an issue with the ink monitor without any data and, the concept in post #5 is wrong! That's not how the printer operates.

 

See post #5; he's already made up his mind, based on an internet search what he incorrectly believes the problem is. After all, it must be true, Frans read it on the internet! That isn't how the printers work; the theory is wrong. I know, I have worked with Epson for nearly two decades testing and teaching for them (I was an instructor at the Epson Print Academy), so emailing or picking up the phone to speak to the actual product manger is easy for me. Again, this theory in post #5 doesn't wash. It was expressed to him correctly on another forum after which he stopped posting; very telling. Some people don't want to hear the facts.

 

He'll perhaps get his new cartridge and perhaps the issue will go away and he'll post his confirmation seen in post #5 as being correct without using a lick of the scientific medhtodgy to conform his confirmation bias (Confirmation bias - Wikipedia). Could be a defective ink cartridge or one that simply failed, or one that needed shaking or a hardware issue, or air bubble in the ink line, or USER ERROR, etc.

 

This is a call for attention, not a call for a correct answer. It's happened here and elsewhere in the past with this fellow. He states a problem along with the solution (why?) but cause and effect (proof of concept) is never produced when asked, outside knowledge experts dismiss it just as we've seen in this series of posts. You'd think he'd just call Epson directly and maybe, they would not only provide an accurate answer he may not want to hear, but maybe provide him a new cartridges too. Probably not, but certainly a better tactic to solving the problem, IF that's his goal. Based on previous posting history here and elsewhere, I have serious doubts.

 

But again, your suggestion was a good one that someone actually hoping to solve a problem would examine again.

Edited May 4, 2018 by digitaldog

Proof of concept (paper trail):

 

Three different color calculators can't be wrong, can they?

 

NEC PA242W with SpectraView problems

 

Flicker, eyestrain or headache when using a monitor with LED backlighting?

 

Do SoLux bulbs meet color temp specs?

Proof of concept from just today; why we shouldn't feed trolls and the results when we do:

Epson R2880 suddenly prints with reddish color cast

Received my new cartridges, installed, color cast gone both in normal mode and ABW mode.

What did you learn?

What did you learn?

 

That some people are nicer and more helpful than others. As if I didn't know! But seriously, the way I see it and after having looked at every possibility that I and others could come up with I am still not sure what caused the color shift other than it looks like not enough cyan ink was put down. Why that was the case, I'm still not sure. I see two most likely candidates, however unlikely they seem to be:

A) The cyan cartridge was running on empty, as indicated by the ink monitor, and suddenly, after being fine for hundreds of prints, supplied less ink. If that is the case then the ink monitor may not handle all corner cases correctly.

B) The cyan cartridge, after being fine for hundreds of prints, suddenly turned bad. What that bad may be, I don't know. It was certainly not clogged nozzles, deflected nozzles or pigment separation.

Hate it if you don't know for sure what happened.

 

PS: nozzle check prints before and after replacing the cyan cartridge appear to be exactly the same.

Edited May 8, 2018 by frans_waterlander

Predicted before you even got the new cartridge:

 

digitaldog, Friday at 8:21 AM

He'll perhaps get his new cartridge and perhaps the issue will go away and he'll post his confirmation seen in post #4 as being correct without using a lick of the scientific medhtodgy to conform his confirmation bias. Could be a defective ink cartridge or one that simply failed, or one that needed shaking or a hardware issue, or air bubble in the ink line, or USER ERROR, etc.

A is wrong!

B is possible but because your testing methodology was so poor, we'll never know.

Predicted before you even got the new cartridge:

 

digitaldog, Friday at 8:21 AM

He'll perhaps get his new cartridge and perhaps the issue will go away and he'll post his confirmation seen in post #4 as being correct without using a lick of the scientific medhtodgy to conform his confirmation bias. Could be a defective ink cartridge or one that simply failed, or one that needed shaking or a hardware issue, or air bubble in the ink line, or USER ERROR, etc.

A is wrong!

B is possible but because your testing methodology was so poor, we'll never know.

 

Man, you are so clever!

Man, you are so clever!

"Listen to understand instead of listening to respond." - Barack Obama

PS: nozzle check prints before and after replacing the cyan cartridge appear to be exactly the same.

Your (poorly) provided scans over on Luminous Landscape show otherwise! :oops: