From MEPIS Documentation Wiki
If you are deciding which printer to buy, take a look at the Linux-foundation.org Open Printing site, to help in making your choice.
If you already have a printer, please make sure that your printer is a model that will work under Linux by visiting the Linux printer database.
Then follow this guide
Tip: if you have trouble setting up the printer through the normal channels, try using a browser to navigate to http://localhost:631/ and set it up over the network.