P.J. Alling wrote:

>Pretty much any light sensitive imaging process has silver involved 
>primarily for three reasons, because the chemistry is well understood as 
>well as it's being more light sensitive than most, in fact IIRC, all 
>other similar processes, and easily the least expensive, (priced 
>Platinum lately), especially if you recover the waste silver.


Good point. The minilabs probably did the silver recycling
automatically. Although they may have switched to silverless dye
sublimation processes at some point, it would have been after I worked
in a shop with a minilab.
 
-- 
Mark Roberts - Photography & Multimedia
www.robertstech.com





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