Digital BW, The Print

Mike,

At http://www.livick.com/method/inkjet/pg2d2.htm, about 1/3 of the way down
the page, Livick seems to have some tests that indicate up to a 681 year
longevity for MIS Ultra Tone ink printed with a 1280.

Livick uses outside direct sun for testing, as best I can tell.  I don't
think he even uses a plain glass between the sun and the test strip.  So,
there is a lot of very short wavelength UV in the light source.  Plain
window glass usually filters this out in indoor display.  With this light
source, coatings that have a UV absorber in them will probably have a major
advantage, which might not be the case in normal indoor display.
Clearshield has such a UV absorber.  Lascaux spray and Hydrocote do not.

Livick seems to have been looking at various combinations of sprays and
coatings.  I don't really understand all the test results, but,
needless-to-say, I'm pleased to see the Ultra Tone ink doing so well.

Paul
www.PaulRoark.com
___________________

-----Original Message-----
From: darajani [mailto:heathmg@...] 
Sent: Sunday, June 06, 2004 9:03 AM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: [Digital BW] MIS Ultratone - Longevity Tests

I was wondering if anybody had seen these test results posted on a 
gum printing site, which seem to indicate 400-600 years longevity for 
Ultratone inks on certain papers with fixatives applied:

http://www.livick.com/method/inkjet/pg2d2.htm

I'm not sure about the methodology here, as there are terms thrown 
around that I don't quite understand (neutral gray band test?).  But 
the numbers seem impressive and I'm curious if similar tests have 
been done elsewhere for prints with fixatives (like Clearshield or 
Lascaux) applied.

Mike 





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