lightfastness the epson way
2004-10-16 by Thomas Fors
I don't know if this is old news or not, but I stumbled upon this site describing how Epson tests lightfastness. http://www.epson.com.au/whats_new/story_72.asp There is no date on the page (aside from copyright 2003 at the bottom) so I don't even know if the info is current anymore. --Tom