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Author Topic: Magenta Cast Epson R2880  (Read 1655 times)

rabanito

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Magenta Cast Epson R2880
« on: January 27, 2019, 06:54:33 pm »

I've noticed a (very) light magenta cast on my last prints.

Epson R2880:
I was careful to use the right profile
I turned off the color management in the printer driver
I run a nozzle check and cleaning
I had the Print Preview turned off (I read about this somewhere)
I use an OttLite for judging the prints

Any suggestions?
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digitaldog

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Re: Magenta Cast Epson R2880
« Reply #1 on: January 27, 2019, 08:35:06 pm »

I've noticed a (very) light magenta cast on my last prints.

Epson R2880:
I was careful to use the right profile
I turned off the color management in the printer driver
I run a nozzle check and cleaning
I had the Print Preview turned off (I read about this somewhere)
I use an OttLite for judging the prints

Any suggestions?
What if you print from a color reference image:
http://www.digitaldog.net/files/Gamut_Test_File_Flat.tif
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BobShaw

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Re: Magenta Cast Epson R2880
« Reply #2 on: January 27, 2019, 09:44:55 pm »

Purple prints are something you see a lot in camera clubs when they get their prints done at department stores.
It may be caused by the file not having a colour profile tag or the printer just ignoring it anyway and assuming it is sRGB.
If you have a Mac do a CMD-I and see what colour profile is showing.
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rabanito

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Re: Magenta Cast Epson R2880
« Reply #3 on: January 28, 2019, 04:34:51 am »

What if you print from a color reference image:
http://www.digitaldog.net/files/Gamut_Test_File_Flat.tif

Good morning  :)

I just printed this file without any adjustments "as is"  and compared with the image in the monitor and a print I had from when we were talking about sRGB vs ProPhoto around one month ago (just in case something happened in the meantime since). Both prints on the same paper (Epson Premium Semigloss and with the the same profile)
As far as I can judge they are identical. No cast that I can perceive. Even that on the monitor matches (no casts anywhere)

I am sure that I was careful before, same routine. But probably I wasn't?...

Thank you!

PS
After clicking on "Print" there appeared a (misterious) warning (s. attachment)  that I ignored for this exercise. It is the first time I see it.

It doesn't seem to have affected the results



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rabanito

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Re: Magenta Cast Epson R2880
« Reply #4 on: January 28, 2019, 09:49:59 am »

If you have a Mac do a CMD-I and see what colour profile is showing.
Hmmm. I have Windows10.
But thanks Bob   ;)
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Mark D Segal

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Re: Magenta Cast Epson R2880
« Reply #5 on: January 28, 2019, 10:50:16 am »

I would pay attention to that warning and get the printer and the application into conformity.

Now, where you see the magenta cast in the prints, do you know for sure that it isn't in the image file as well, and you are not seeing it because of a display calibration/profiling issue? Use the eyedropper in Photoshop, with the Info panel set to Lab, to see whether when you pass the eyedropper over the areas where the print looks magenta you are getting a* values greater than 0. If so, it would indicate a Magenta presence that the printer is reproducing but the display is not showing to the naked eye. Also try printing the file using Printer Manages Color instead of an ICC profile, to see whether the Magenta cast persists. If not, the problem could be profile quality.
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rabanito

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Re: Magenta Cast Epson R2880
« Reply #6 on: January 28, 2019, 11:57:17 am »

I would pay attention to that warning and get the printer and the application into conformity.

For what is worth, I got this info from the web, some Adobe Forum, for the same warning.

QUOTE:
"Okay, here's the answer I got from Adobe and it worked.

'Try opening "print" while holding the spacebar; this discards any saved values. Also, make sure the correct printer it set as default' "


I'd let Windows manage my default printer and now I changed that and set the 2880 as default. Wait and see.
Till now the warning didn't appear again
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rabanito

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Re: Magenta Cast Epson R2880
« Reply #7 on: January 28, 2019, 12:27:44 pm »


Now, where you see the magenta cast in the prints, do you know for sure that it isn't in the image file as well, and you are not seeing it because of a display calibration/profiling issue? Use the eyedropper in Photoshop, with the Info panel set to Lab, to see whether when you pass the eyedropper over the areas where the print looks magenta you are getting a* values greater than 0. If so, it would indicate a Magenta presence that the printer is reproducing but the display is not showing to the naked eye. Also try printing the file using Printer Manages Color instead of an ICC profile, to see whether the Magenta cast persists. If not, the problem could be profile quality.

I tried it in the original and in three soft proofs (three different profiles - Epson, Harman and HaRag)
On a gray stone wall there are some non-zero values  but not everywhere. (max +2)
They show when I saturate the magentas (+100) as patches. Not everywhere.
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digitaldog

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Re: Magenta Cast Epson R2880
« Reply #8 on: January 28, 2019, 12:34:44 pm »

Now, where you see the magenta cast in the prints, do you know for sure that it isn't in the image file as well, and you are not seeing it because of a display calibration/profiling issue?
If I understand the OP, no such cast in the color reference images. So I have to believe it's in his document or something wasn't set correctly in the print driver/software host.
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Mark D Segal

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Re: Magenta Cast Epson R2880
« Reply #9 on: January 28, 2019, 01:14:11 pm »

This indicates your document does contain some slight magenta hue bias in certain areas. Try neutralizing those areas and reprint. See what emerges.
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Mark D Segal (formerly MarkDS)
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rabanito

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Re: Magenta Cast Epson R2880
« Reply #10 on: January 28, 2019, 02:43:42 pm »

I don't know how to say thanks again and again but I'd like to stress how much my understanding of digital photography has improved since I began here at this forum
 :)
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BobShaw

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Re: Magenta Cast Epson R2880
« Reply #11 on: January 28, 2019, 05:40:16 pm »

Hmmm. I have Windows10.
But thanks Bob   ;)
You should find out how see if an image file has a colour profile tag in Windows 10 then. If not then Photoshop will do it.
« Last Edit: January 28, 2019, 07:01:56 pm by BobShaw »
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