Digital BW, The Print

I know, all of these papers, even the best ones have additives,
brighteners, OBA's, and other stuff in their coatings that are a big
alchemic mystery to me. What we need is a Tsar of paper composition to
set standards and inform the public. Maybe the guy who just got kicked
out of FIMA would want the job.

john



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Allan Chen
<allan@k...> wrote:
> Clayton et al,
> 	Thanks for the information.  It really helps a great deal to clear up 
> the issue.  I'll be sorting through it all and looking at my options.
> 
> allan
> 
> Clayton Jones wrote:
> > Hello Allan,
> > 
> > 
> >>why is it that EEM, with OBAs, turns yellow, but that you suggest 
> >>that this paper, also with OBAs, is more archival?
> >>...is the yellowing a result of solely the OBAs, or because of some 
> >>other characteristic of EEM in particular?  If it's from the OBAs, 
> >>does that mean that all papers with OBAs will yellow, either at all 
> >>or as much as EEM?
> > 
> > 
> > I don't think EEM yellows because of OBAs (unless it uses really
> > crummy ones).  It yellows (I'm pretty sure) because it contains
> > lignens and may also not be completely acid free.  Whatever the
> > reason, it does it with alarming swiftness.  There are many archival
> > (acid and lignen free) papers with OBAs that don't change noticeably,
> > even after several years unprotected by glazing under nearly constant
> > light.  The subject of OBAs is an ongoing controversy with
> > disagreement even among "experts".  There is more information about
> > this at the bottom of the "Great Paper Chase" article at the web link
> > below.
> > 
> > 
> > 
> > 
> >>I realize that I am using "archival" incorrectly - EEM doesn't 
> >>actually fade, right? 
> > 
> > 
> > Right.  Papers don't fade, inks fade.  So we have to be clear which we
> > are referring to in our discussions.  If we speak of a print fading
> > we're usually talking about an ink problem, although a given ink may
> > fade at different rates on different papers.  Clear as mud? <g>
> > 
> > 
> > Regards,
> > Clayton
> > 
> > 
> > Info on black and white digital printing at    
> > http://www.cjcom.net/digiprnarts.htm
> > 
> > 
> > 
> > 
> > 
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