Digital BW, The Print

What is interesting about the B&W ratings is that this is with the standard full UC's used.  I 
wonder if one is using something like QTR and using just the two blacks(non of the colors 
which one would guess were used in the ratings), we would be seeing really astonishing 
longevity ratings.  Anyone care to guess?  At least double?

Tariq


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" <paul.roark@v...> 
wrote:
> As John mentioned, the new Wilhelm data has some good news for B&W.
> 
>  
> 
> See http://www.wilhelm-research.com/epson/WIR_Ep9600_2005_02_14.pdf
> 
>  
> 
> In the "Black and White" section UltraSmooth under UV glass is at 300 years.
> 
>  
> 
> Somerset Velvet for Epson under UV glass is at 168, but when sprayed with
> PremierArt it goes to >300 years.
> 
>  
> 
> It surprises me that even under UV glass the spray would add that much.
> 
>  
> 
> In the color section, PremierArt Canvas for Epson is rated bare bulb at 46
> years, but goes to 60 years with PremierArt spray and goes to >100 years
> with their Eco (water borne) coating.
> 
>  
> 
> So, the water-borne coating seems to be more effective.  It goes on thicker,
> which is probably the variable.
> 
>  
> 
> With numbers like these, maybe Livick's 681 year rating for a 1280 MIS UT1
> (old magenta) print isn't so off-the-wall as it might have otherwise seemed.
> He appears to have coated it first with a solvent based spray with UV
> blockers (Sennelier), and then with a water-borne UV coating (Clearstar).
> See http://www.livick.com/method/inkjet/pg2d2.htm
> 
>  
> 
> I found when I was trying the water-borne coatings that an initial spray
> with Lascaux (no UV blockers) helped the water-borne coating adhere.  I'm
> going to try the Sennelier + water-borne combination one of these days.  The
> water-borne coatings do seem to go on thick enough to give better physical
> protection.  I just need a better way to apply them.
> 
>  
> 
> Paul
> 
> www.PaulRoark.com <http://www.paulroark.com/>  
> 
>  
> 
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> [Non-text portions of this message have been removed]