Idk if they still do this, but a long time ago I had a Brother inkjet that wouldn't print black and white if one of the color cartridges was empty (cyan iirc).

How about not printing with the cartrige 3 quarters full but digitally empty?

It took me a bit to understand what I think you meant:

Even when the cartridge is physically 3/4 full, the software will claim it is empty and not print.

Yeah, that sucks too.

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