Digital BW, The Print

Do you consider pigments to be acidic? 

If one is using acid-free paper and pigment ink, I'd stick to a 
BUFFERED board and mat.

Below was taken from the Light Impressions website and describes when 
and why a NON-BUFFERED should be used.


"When you're matting certain types of photographs, such as albumen, 
dye transfers, or chromogenic prints, and textiles, like silk and 
wool, use non-buffered board. Putting a buffered mat next to the 
acidic dyes in these materials could cause a color shift. It's 
manufactured with a pH value of 7.5 +/- .5, and because it is not 
buffered, the pH value will drop when exposed to normal atmospheric 
conditions." 

http://www.lightimpressionsdirect.com/servlet/OnlineShopping?
Dsp=20300&PCR=30000:230000:232000:232100:232110

I've used nothing but and acid-free, 100% rag buffered board for 
silver gelatin and pigment on paper prints and have never had any 
problems.


Scott

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Platinum Jim" 
<platinumjstrain@a...> wrote:
>
> The only prints for which I even consider buffered are b&w silver 
prints.  The typical reason for the buffering is to overcome residual 
acid, which should not be present in any of inkjet prints, platinum-
palladium, chromogenic, etc.  Buffering, in fact, can damage 
chromogenic prints (according to Light Impressions).  It seems to me 
that I would follow the advice of the person working there.  Hope 
this helps.  Jim
>   ----- Original Message ----- 
>   From: brucercohio 
>   To: DigitalBlackandWhiteThePrint@yahoogroups.com 
>   Sent: Friday, January 06, 2006 3:10 PM
>   Subject: [Digital BW] Buffered or Unbuffered Matt Board
> 
> 
>   Hi all
> 
>   Does anyone have guidance on when to use a "buffered" 
or "unbufferd" 
>   matt board?
> 
>   Today a person at "Light Impressions" told me to use a "Non 
Buffered" 
>   matt board for both digital pigment or dye ink prints.  In one of 
>   their catalogue advertisements on page 10 they say to use a non 
>   buffered board for albumen, dye transfer or chromogenic prints 
yet 
>   other advertisements in their literature shows color prints in a 
>   buffered matt board.
> 
>   Any help would be appreciated
> 
>   Bruce 
> 
> 
> 
> 
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