I have tried cleaning the black cartridge in about a dozen different ways (shallow isopropyl bath, hot water, q-tip, cleaning contacts) and have already run all the cleaning options I have on the software as black or all options. The test page prints out THE SAME every single time. I have no idea where the problem is, it clearly can squirt out black ink, but it fails RELIABLY in the same way in the same line every time.
Welcome to the Canon Community Forum, Okahuma!
The model printer you have isn't sold or supported in the US market, but it does sound like a bad cartridge to us and we'd recommend waiting to test that theory before doing any further troubleshooting.
If you're outside of the USA and would like to consult with a printer technician, you can also reach out to Canon in your country for help. You'll find contact information here: Canon.us/globalsupport
We wish you the best!
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