HP 2200 DN loses IP Address

Has anyone had issues with HP laserjets losing their IP address? We are a small parochial school outside Philly, and since there is not the funding for an onsite IT personnel, we rely on the “kindness of strangers” for help. I currently have the HP 2200DN hard-wired to our little non-server network. We have a cable modem-router wired/wireless system feeding approxiametly
50 PCs on a Win 2000 platform. I have reset the IP address 2x, but after about a week, the teachers tell me it “forgets” where it is in the network, and they cannot print to it anymore. Thanks for any and all you help.