Been searching for ink info and found this blurb on Epson ink, its not real clear just which ink set is being talked about as the last paragraph seems to contradict the middle one.
quote from
http://www.printheadcleaners.com/%20Epson-Super-wide-format-printer-64-inch-SP11880.aspx11880 printers…
“New ‘ink repelling coating technology’ on the surface [of the new head design] to reduce head clogging and cleaning hassles, especially with linty or dusty papers (fine art papers of some kinds) and to make the new, more demanding inkset work. The heads are much the same as those in the Stylus Pro 3800, but with this ink repelling coating added, in order to prevent the new inks from causing serious trouble. The new inks cannot safely be used in the earlier printer models. The Vivid Magenta is said to be especially problematic for heads without the ink repelling coating, and to completely ruin such a head within about six months of use.”
“The two vivid magenta inks are again, unfortunately not compatible with any of the prior printer models, because they would ruin the print heads of older printer within six months. The only pigment that got replaced is the magenta (used in both magenta inks). No other changes were made to the inkset for these three new machines, and cartridges sold for them other than the two VM ones are labelled as being for use in the 9800 family as well as the 9880 family. On photo papers, the new magenta inks yield a considerable increase in gamut in the blue-to-magenta range (up to 22% more chroma), with a little spillover gain in the blue-to-cyan and magenta-to-red ranges, and the Dmax and the gamut of colors near Dmax has improved considerably.”
There’s also the suggestion that the 11880 uses a different inkset to that found in the 4880/7880/9880
“Apparently, none of the inks, except for the two Vivid Magentas, used in the SP11880 are precisely identical to those in the other new machines, however, they are very close, and use the same pigments. The pigment loading of the 11880 inkset seems to have been increased substantially, because all of the six primary colors in the raw state of the printer are much darker and generally richer looking on photo paper than they were from the 9800, or it could be the driver putting more ink down by default, or it could be a change to the encapsulation technology used in this version of the VM inkset, or both, or something else, or any of the above, but this difference is striking.”