Canon refill inks not compatible anymore?

sheepy

Newbie to Printing
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Dec 7, 2025
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canon pixma 8720
Hey guys,

I’ve been buying canon refill inks for my canon pixma 8720 for years. Recently the computer stopped printing my refilled ink cartridges. A firmware update maybe? I bought a new printer thinking it was faulty but once the factory inks got low I tried refilling and suddenly it wouldn’t print in certain colors again. Is there a new OEM chip resetter I can buy or way to override this? My old resetter isn't helpful anymore. I still have hundreds of dollars of refillable ink backlog. I can’t contact canon about this as I'm afraid it will void my warranty. Thanks for any ideas you might have on this matter!

Further info: It wouldn't print the refill inks pink, yellow but would print grey (though stripey). I put in a factory pink one and still wouldn't print until I reset it on my Mac. Now it will print the factory pink but still no yellow, and still stripey grey.
 
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