This does not address the fact that the new Epson P800 has found a way to prevent the use of resetable carts, that to this day has not been overcome. This will also prevent the use of Black and White carts in P800. So after one refill the cart is useless.
Epson will continue this trend (Profit) for all printers developed beyond the Epson P800 unless this design is overcome. So the case is very important to ANYONE using refillable carts.
See: https://www.youtube.com/watch?v=bmtxzeyLHRU
(Jose Rodriguez: The Actual Reason why the North American EPSON P800 Does NOT work with Refillable ARC Carts)