I wonder, if you buy the Epson's WT7900 white ink cart ( http://www.epson.com/cgi-bin/Store/jsp/Pro/SeriesStylusProWT7900/Overview.do ), and somehow remove the white ink from it and refill it in an empty cart for your printer model, then you could basically print with white ink! Say you replace a black ink for this white ink cart, you can make a black only (but white!) print on a dark surface. You could emulate daguerreotypes, ambrotypes and tintypes with it. (If you find a way to feed your printer with a thin glass or iron sheet.) Print white on a thin sheet of glass, paint it black on the back you will have a contemporary ambrotype. Find a way to adhere the white ink on a glass surface is another challenge. Thinking out loud here..