Problem at running printing

Hi,
I downloaded printing drivers for my Epson Stylus SX420W from here:

Epson driver

Epson Inkjet Printer Driver (ESC/P-R) for Linux 1.8.1
Epson Printer Utility for Linux 1.1.2
Scanner Driver Linux 2.30.4 All-in-one package

I managed to install them. The scanner works regularly, but printing gets stopped every time I launch a print job. Could you help me figure it out and fix it please?
Thanks