I use an Epson 7890 for fine art printing on canvas. The printer was acquired from the Costco where I worked when they closed their printing operation (10000 pages?) Everything was fine, doing test prints with pk ink (and previously with mk on canvas). Did a service cleaning (based on video from Inkjet mall). No problems there (other than it really needed a cleanup). Switched immediately to mk ink to do a canvas print, was delayed by printer telling me it failed the auto-cleaning should I try again, yes. The print looked off, did a nozzle check to see the black was absent (no text or black pattern). Tried several cleanings so far, popped the cartridge for a shake/inspection, still no black. I'll probably try going back to pk next, but... Anyone have any suggestions? (***What is this? Why so many skill testing questions? Is this a job interview?)