I'm surprised that the printers aren't all like the EcoTank printers that Epson is selling now where you just refill the tanks on the side of the printer with fresh ink when needed.
I have a continuous ink supply system (a.k.a. CISS) on my Epson WorkForce printer. Since the cartridges for it don't have the print heads built in, you can have a tanks off to the side of the printer feeding the cartridges with ink. Saves me a lot on printer costs.
Michael C. Fortner
"Maxim 37: There is no such thing as "overkill".
There is only "open fire" and "I need to reload".