Digital BW, The Print

>So, you spray the print first, and then dry mount it?

Yes, I think this protects the print.  Then if there is any minor damage
(like from removing dust that has been pressed into the surface) it's easy
enough to do a post-mounting, light spray. 

>Also, how long do you think the shelf life is for paper, such as 
>Epson Premium or Kirkland?

I don't know.  I think I may have had one piece of paper "go bad" that was
not in a container.  It was a piece of Epson UltraSmooth that just did not
seem to have the dmax it used to.  (I double-checked that I'd printed on the
correct side.)  On the other hand, I just used a couple old boxes of Eclipse
Satine that have been sitting around for a few years, and they seemed fine.
For ink testing, I regularly use odd, cut pieces of EEM that have sat in the
open in my darkroom near the paper cutter, and they seem to hold up fine.
So, in general, I think of the paper as a non-perishable.

>Do you think it could be frozen for long term storage (2 yrs or so) 
>like traditional "silver" papers?

I doubt that freezing does significant good.  I suspect humidity and
airborne pollution are what might attack the coating.  Aside from the one
sample of UltraSmooth that seemed to die after it has been out of a
container for months, I've never detected any other signs of age-related
deterioration of matte papers.  On the glossy side, I see swings in dmax
that can go from close to 1.7 to over 2.0, and I don't know what the
variables are.  I'm suspicious of humidity, but I have not been able to nail
it down.  The swings seem almost random.  They do not seem to follow the
usual desktop printer warm-up changes (which produce lighter midtones) that
I've seen rather regularly.

Sorry I couldn't be of more help.  Paper life and the variables that affect
how the papers print are definitely areas where we could use some
knowledgeable input.

Paul
www.PaulRoark.com 



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" 
<paul.roark@v...> wrote:
> Hans,
> 
> >What about using heat when dry mounting inkjets?
> >If you use i e Seal Archival tissue you have to warm it up till ca 
70C.
> >What happens with the coating and the ink (almost boiling)?
> 
> I dry mount with Seal Archival.  I set the press at 170 F (about 77 
C).  I
> have no idea what the actual temperature is.  I'm looking at a UT-
FSN+ print
> on Epson Semimatte, sprayed with PremierArt Print Shield (seems to 
be the
> same as Lyson Print Guard) that was dry mounted onto an acid-free, 
buffered
> mat board.  I have not been able to see any problems with it.  The 
only time
> I did have a problem was when my release paper was too old.
> 
> >How will this influence the longevity of the print?
> 
> I don't know.  I'm guessing it'll have no effect on the fade rate.  
> 
> The buffering in the mat board might actually help the paper.  Epson
> Semimatte is rated at ">200 years" by Wilhelm, but my acid test pen
> indicates the paper base is only weakly buffered, unlike the other 
Epson
> "Premium" RC papers, which test as quite "acid free."  (There may 
be a
> reason Epson Semimatte is relatively cheap.)
> 
> Let us know if you run into any problems with dry mounting.
> 
> Paul
> www.PaulRoark.com





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