In this video, a Canon print cartridge is opened up and revealed not to contain the meagre 11.9 ml (0.4 fl oz) of ink it is advertised. The proposed solution is to buy a printer designed to be manually refilled with bottles of ink (such as the featured Epson EcoTank ET-2850), though it has only been tested briefly.
I bought a canon color laser printer two years ago with the starter toners. After about 6 months or so, warning came that one of the colors is empty. It was still printing fine so I continued printing. One by one, warning came for all colors, so I bought a 3rd party toner set, but still didn’t replace them because they were still printing fine. 2 years later, I’m still getting warnings that all colors are empty, but just the other day, I printed color pictures of all the 700 Pokémon for my daughter. They’re still going good. I don’t know if they’ll ever actually run dry, or if I should preemptively replace the toners.
Never open it, you’ve stumbled upon an infinite duplicate bug. Don’t tell the admins
My HP color laser (178?) acts the same, with the added “extra low” that you have to allow to accept in some shady parameter in the config or it won’t print.