Replacing NON Manufactored ink cartridges in EPSON...

Question

I bought MANY ink cartridges to replace the original "Very expensive" Epson ink cartridges for my printer and now the printer states that it doesn`t recognize the cartridges and to re`install them. I have tried this 20 times and it is still saying the same thing. The printer will not work until I fix this problem. :( ???????????????????