Digital BW, The Print

After 300 hours in my fader, the EAM test strips with and without Lyson
Print Guard spray faded and warmed the same amount.

One of the Print Guard samples had 4 passes of spray done in a single
spraying session, the other had 3 separate sessions, each with 4 passes.
Again, there was no difference in the fading or warming between the
different amounts of Print Guard applied.

By 300 hours I usually have a pretty good idea of how an ink/paper is going
to do.  So, my conclusion is that there is no significant difference in
fading and warming between MIS FS-N inks on EAM paper with and without the
Lyson Print Guard spray.  It appears to have no effect.

The Print Guard spray lowered the Dmax slightly.  The one with more print
guard had lower Dmax.

At first, my conclusion was that the spray was of no value to me, but I am
changing that opinion -- it does have value.  While it may not affect
fade/warming resistance, it does what it is supposed to do.  The snapshot on
my refrigerator that had a single, heavy spray of Print Guard looks great
and does not show the finger prints that I have been purposely putting on
it. So, the spray appears to be very effective at protecting these otherwise
rather fragile pigmented quads against the usual fingerprints and abrasion
that snapshots are subject to.

I might add that this is the first test I've done of the production MIS
FS-N.  Whereas the last FS ink sample I tested to 300 hours warmed about 7
units (of 256), the FS-N in this test warmed only 0.5 units.  The fading was
almost identical.

Paul
http://www.PaulRoark.com