Digital BW, The Print

As near as I can tell, all of your coating experiments have been done 
with Piezo inks. Have you tried coating the MIS inks, VM set in 
particular? 

Chris Hargens

--- In DigitalBlackandWhiteThePrint@y..., "Martin Wesley" 
<mwesley250@e...> wrote:
> Last summer I did a series of trial coatings of inkjet prints, 
Piezo prints, using a variety of varnishes. At the time the one I 
found the easiest to apply was a water-based, exterior varnish by 
Varathane. This is a high density polyurethane coating. Initial 
appearances were very good.
> 
> Robert Morrison cautioned me that the polyurethane were the most 
likely to yellow of all the coatings being tried at the time. I was 
skeptical but time (and a relatively short time of 8 months) has 
shown that Robert was right. Not only has the Varathan yellowed 
strongly but unevenly so that the prints look a bit mottled. The 
prints coated with the Golden acrylic varnishes show no sign of 
yellowing. The vinyl coatings are out touring the countryside and I 
will have to wait until they return to see how they are holding up.
> 
> So if you are experimenting with coatings, definitely avoid the 
polyurethane, unless of course you do want an aged yellow effect.
> 
> Martin Wesley
> 
> 
> [Non-text portions of this message have been removed]