A: Indefinitely if you use an external waste tank. Without it, 2–3 resets before pads overflow.
(specifically the paper and ink lights), you are likely facing the "Service Required" error. This doesn't mean your printer is broken; it means the internal waste ink pad counter has reached its factory-set limit. Epson Printer Resetter L3250
The reset process typically involves using a third-party utility, as Epson generally recommends professional servicing. A: Indefinitely if you use an external waste tank