Did the problem arise when you began using the aftermarket cartridges?I don't recall anything out of the ordinary when the problem began manifesting itself a few weeks ago,
So the nozzle check above is from a single nozzle check printed since you installed the new cartridges?we replaced that cartridge with the new one today, but obviously that didn't help at all.
Swath #5 - Magenta - is two-toned vertical striping. The left verticle strip has a Bluish background while the majority verticle stripe has a Yellowish background. This is why I thought you had swapped positions of the 5th and 6th swaths. Is this "normal" Magenta swath appearance?in the correct order: Cyan, Yellow, Light Cyan, Black, Magenta, and Light Magenta.
Please print a new/current nozzle check, scan, crop and post. It is best to analyze from the most recent information possible.it's been so long since we did a nozzle check