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Suddenly Canon printer will only print blue - can't print black. Problem is with Firefox only.
I refilled the ink in my Canon MP280 printer, and after doing so Firefox will only print pages in blue ink. I can't get it to print black.
Printing from another app (such as OpenOffice) works fine. I tried resetting the Firefox printer settings (and also resetting "all" Firefox printer settings) and it keeps printing blue. I've tried resetting the printer also, and powering off and back on etc.
I am on a Mac using Firefox 46.0.