We've all been there. It's late, and you have a final project or presentation due first thing in the morning. You've been awake for days and you've finally finished. Only when you go to print, there's no ink. Epson's latest printers offer a simple solution that should go a long way to remedying the issue: they hold more ink. The company's line of EcoTank all-in-one printers house so-called Supertanks instead of individual cartridges that are refilled with bottles of ink. What's more, each of the five models has a reservoir that holds the equivalent of around 20 sets of traditional cartridges (depending on the model, of course) and two support WiFi printing via a mobile device.