i'm trying to install a sharp printer ar 5520n to my pc, seems there is no ethernet drivers, on the installation process requesting ip address
The printer does not need drivers for the network card, drivers are only for computers. Things like printers use firmware burned onto a chip for their hardware controls.
You just print out an internal test page and that will give you the IP for it. As long as it's connected to a network and you have something assigning it an IP like a router with DHCP turned on.