The following is the location of a pdf covering the Epson 3800 that provides information regarding ink usage, color gamut comparison and color stability.http://www.epson.com/cmc_upload/0/000/079/...3800SRG_1aE.pdfAnd here is the source link from the Epson store.http://www.epson.com/cgi-bin/Store/WideFor...Format+PrintersRAL[a href=\"index.php?act=findpost&pid=91973\"][{POST_SNAPBACK}][/a]