When the counter reached 100%, the printer locked itself. Not because it was broken. But because the pads were full of ink. If you continued printing, the ink would leak. It would ruin your desk, your carpet, your hands.
Attempted to print photo of user’s deceased cat. Magenta cartridge low. User cursed at me. Printed anyway. Grainy but acceptable. Adjustment Program Epson Artisan Px720wd