Networked Printer Connection Problem

Hi,

What would cause this issue for a Lexmark printer;

Pinging 192.168.60.20 with 32 bytes of data:
Request timed out.
Reply from 192.168.60.20: bytes=32 time=17ms TTL=252
Request timed out.
Request timed out.
Reply from 192.168.60.20: bytes=32 time=15ms TTL=252
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.60.20: bytes=32 time=14ms TTL=252
Reply from 192.168.60.20: bytes=32 time=17ms TTL=252
Reply from 192.168.60.20: bytes=32 time=15ms TTL=252
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.60.20: bytes=32 time=15ms TTL=252
Request timed out.
Request timed out.

I've tried changing the cable, used a different IP, altered some settings, restarted several times. It's the same from all PC's on the network, however the printer company guy got his laptop to work with...