Digital BW, The Print

> Yep...that is certainly ridiculous.  Unfortunately that calls
into question
> all of their numbers.  But my guess is that if you allow 40%
density failure
> and are unconcerned by color shift you probably could get 100
years from the
> enhanced black.  This is a prime example of why year ratings
are a really
> bad idea.

Robert,

In the period that Wilhelm hardly published any data, just after
the Epson 1270 orange plague disaster and so before the changed
testing setup, he published some small lists of tests still
running. Mediastreet's Generations Enhanced on Royal Plush (aka
German Etching) got a  ">75 years rating + test going on" in the
first data sheet and several months later a ">100 years rating"
in the last data sheet. Meanwhile we all had seen that the black
wouldn't keep its density in window tests. Wilhelm is mainly
measuring colour shifts.

Still it has been a good choice for colour inks considering its
gamut, lower metamerism and its fade resistance. A nice solution
between the era of dye inks and today's high load pigment inks.
Better than Epson's Archival ink on gamut and metamerism but not
on fade resistance. The "fadeproof" dye inks on matt paper are
fading much faster.

Ernst