I had similar problems with a Cannon inkjet and a Lexmark inkjet.
Never could get them to work right after the initial cartridge got low on ink.
The Lexmark had printed a total of about 20 pages when it went bonkers. It had a 60 day warranty (IIRC) and the time had already expired.
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I decided to give up on inkjets.
I bought a bit more expensive Minolta PagePro laser (about 6 years ago now). It still operates like a champ, but is only b/w.
On cyberMonday 2008 I bought an Xerox color laser for $150. It, too, works like a champ.
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Dump the inkjets. Pay a bit more and get a color laser. They have come down tremendously in price.
I wonder if they make a large format laser? A laser would be good for me anyway, since there is a cool process I can do to make transfers on glass with one. (won’t work with inkjet ink).
Lasers aren’t worth a damn for photographs.