the only printer that doesn't do that that is an inkjet printer are the Epsons...

I think though it has to do with a combination of using an Epson printer with Epson inks on Epson Papers...

I have an old Epson Photo 875DCS I've had for about 4 years now, back when they were $400... Imagine what I could have now(large format wise-lol) but I use the inks that are made for that printer and Epson double sided Matte paper every year for Christmas Cards/Postcards, and tested these the first year I made them by soaking the final copy in a sink of water... Other than the fact that it was a little warbled(the paper that is) the print had not changed one bit, as far as color or running, etc...

There's a lot of extra info out there through Wilhelm-Imaging-Research. link as follows: http://www.wilhelm-research.com/
They are the ones to listen to (imo) as they test all the archive stuff for the major museums and libraries, etc... They give you the down-low on all types of printers, inks, papers, etc

That's my 2 cents worth, HTH!
Shawna