Hi There, i mean 7700 or 9700, do you know where to buy HDR inks in good price??
Is there a reason you're using a 5 color printer?
Regardless, I think it would not be wise to try to refill carts. Aside from the issue with chips, the only ink designed to be used in the 77/9700 printers is Epson ink ad if you want the least cost per ML, you can use 700 ML carts.