When you print a nozzle test pattern, are all 10 inks printing? Maybe the far left or far right is not printing altogether and the 9 others are just fine, giving the illusion that all is good...
WOW okay I just figured out the problem after this response. I went back and checked the most recent nozzle test (and actually counted) I noticed that two of them looked very similar in color. I opened my door to find that I have not a light black and light light black but both are light light black. I absolutely cannot believe I have done this and not noticed it. Story of my life lol.Thanks you so much for all the responses and advice. I really really appreciate it all. I will also keep in mind to keep my BPC on too thanks againbobbie
Not saying you cannot force them in the wrong slot but highly unlikely. I tried putting the wrong cart in the wrong slot with my 7900 and 9900 and both will not take the improper cart.Did you possibly find something else? Maybe added a Color Efex Pro filter by mistake? In all seriousness ,very strange.
Going back to my statement above though, I am not sure about the ink process, how long or if the ink has to run through the tube before it is pulling from the new cartridge. (wow did that make sense)