Digital BW, The Print

Clayton,
because they are normally displayed behind windows anyway, would it not be better to put them under  glass in the direct sun to remove this contaminant factor? I appreciate that longer would be needed for the test, however.

Richard

At 05:40 p.m. Monday 10/11/2008, you wrote:

>Addendum: I forgot to mention that Steve and I discussed the
>possibility that my washing may have removed some coating. He gave
>another part of the unwashed border a quick blast of compressed air,
>which removed more dirt than my quick brushing had. Thinking that some
>dirt may be trapped in the texture pits, after I got home I gave
>another spot a prolonged compressed air cleaning, from several
>angles. It made a big difference and looks about as bright as the
>washed area. Have to put it on the spectro to be sure, but I'm
>satisfied that the visible discoloration is just dirt and not an OBA
>issue.
>
>Regards,
>Clayton
>
>Info on black and white digital printing at 
><http://www.cjcom.net/digiprnarts.htm>http://www.cjcom.net/digiprnarts.htm
>I-Trak 2.1 <http://www.cjcom.net/itrak.htm>http://www.cjcom.net/itrak.htm
>
> 

--
www.richardsmallfield.com 

   "Some things have to be believed to be seen."
   --Ralph Hodgson


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