We tested on 4 different papers to try to get a feel for sensitivity to paper coatings. You can deduce from the data below the following conclusions...

• The Eboni black, Light black and Photo black held up extremely well. The density and shifting that did occur was the result of the paper itself. The inks are rock solid.

• The Cool Toner and the Light Cool toner were effected the most. Very little of these inks is actually deposited on a B&W print, so the impact of the data on a real print is minimal. It really is of little concern except for cool prints. Even here, the archivalness is excellent.

• The shifting of the black and gray inks is very minimal. This ensures that they will not turn green, brown, or magenta as they age. All black and white prints will warm slightly due to the yellowing of the underlying paper due to the presense of optical brighteners used in the paper manufacturing process.

• When looking at this data, remember that a Delta-E of 4.0 or less is barely preceptable to the human eye.

• For reference, given the same exposure on EAM, Epson dyebase black faded from 1.80 Dmax to 0.96, and had a 26.5 Delta-E shift. In otherwords, totally useless as an archival print medium.

Stay tuned, the B&W technology is starting to move fast.