Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Peter Marshall 
<petermarshall@c...> wrote:
>
> John,
> 
> I think this is a very good case of where it is worth reading Livick's 
> results rather than Wilhelm's.
> 
> Here's a short quote from a piece I wrote about him: "his coating of 
> choice is Clearshield Original although some may prefer the thinner 
> Clearshield LL. Although he found the widely available Lascaux's 
> 'Fixativ' to provide little benefit on its own, it both reduces the 
> drying time needed before coating with Clearshield and gives some 
> additional protection."
> 
> And yes, it does appear to give very considerable protection from his 
> tests. Of course you many not want your prints to last 300 years. I 
> certainly can't be bothered with it.
> 
> Regards,
> 
> Peter Marshall
> petermarshall@c...    
SNIP
Wilhelms early results were relative to trying to extend the life of photographic prints. His 
later tests on microporous papers, however, I believe show extended life. Again, I believe 
due to reducing atmospheric oxidation effects. Microporous papers greatly increase the 
surface area of the inks, thereby increasing the possibility the inks will degrade due to 
oxidation. 

One of the problems with coating/laminating early on, was the lack of stability of these  
coating materials. Therefore many people did not recomend these solutions for other than 
temporary environmental solutions. Coatings and laminates have greatly improved over 
the last 10 years, and requirements for sealing microporous papers have been revealed. 

John Nollendorfs