08-06-2018 10:16 AM
Your printer has two black inks. A pigment black for text and a black (along with cyan, magenta and yellow) for photos.
You should ryn a nozzle check check and if necessary a head cleaning.
03-20-2020 05:25 PM
Hi everyone, I know this is an old thread but I'm having this gray-as-green problem and wondering which of ebiggs' pieces of advice fixed the problem for you, msvereda. I know something worked because you were very happy. If you happen to remember the solution 4 years later, please reply! Thank you! - Karl
03-20-2020 08:31 PM
Hey, thanks for getting back to me! It's a 2019 MacBook running Catalina and I usually print from Lightroom CC Classic but same problem from Photoshop as I recall. I use Red River Papers with the proper profiles And like the other people the gray-as-green-tinted problem started up out of nowhere. I saw someone mention it being fixed by choosing "Photo Paper Plus Semi-Gloss" but it seems weird that that would be the only paper that solved the problem. (And not to complicate this further, but I often find that whatever option I choose in that "Quality & Media" window doesn't "stick"--will revert back to another Canon option as soon as I leave the Print Settings dialogue.
03-20-2020 08:32 PM
I was about to go back through the thread to find the instructions for running a nozzle check and perhaps a head cleaning, but it sounds more like a software issue considering that everyone seems to have a problem with the exact same color cast, no? Thanks again!
03-21-2020 06:27 AM - edited 03-21-2020 06:29 AM
I ran a test print using Red River SemiGloss Fiber. ICC profile from RR; recomended media type Canon Photo Paper Pro Luster.
Test image was a B&W test print from Northlight Images.
Printer driver is latest download from Canon site - 188.8.131.52 version.
Screenshots of settings in LR and printer driver.
No color cast. Excellent B&W print.
You say it started up out of nowhere - where there any system changes to your computer?
03-21-2020 10:55 AM
"I usually print from Lightroom CC Classic but same problem from Photoshop..."
I see this problem a lot of the time when doing B&W. Mine tends to have a very slight magenta cast. I also exclusively use PS to print with. Sometimes you can't believe what you are seeing on your monitor. In PS you can adjust indivual colors if need be. I don't know it the Pro-100 will ever or can ever do true B&W prints but you can get close. For it to do B&W it needs all the cartridges even the color cartridges. There is no possibile way to get 256 shades of grey with one or two B&W ink cartridges. In your case it appeares green is mor eheavy that it should be. Try adjusting it in PS. You are letting PS mangae the printer. Never let the printer manage printing.
Just some suggestions. Hope it helps you.
03-21-2020 11:34 AM
03-21-2020 11:37 AM
"When printing monochrome it is very important to avoid papers with optical brightening agents (OBAs)."
This is super important. The selection of paper is paramount. If you call Red River, they will recommend their best papers for B&W prints.