Raylo

You need to check the printer setup to make sure the network printers are installed properly. I did this a few years ago and don't recall all the details except that the install disk didn't work on my networked computers and it was a bit of a PITA to get the ip addresses input correctly. Mine was a Canon, but I think it was more of a Windows issue, not a printer specific issue. As far as the router goes I think you need to configure it to use static ip addresses (disable auto DNS) so once you have the printers set up the router doesn't reassign the printer ip addresses to other devices. I did this then wrote down a list of devices and ip addresses for reference and future troubleshooting. You may want to post this in the networking area to get more expert help.