Digital BW, The Print

OK, I'll add my 2 cents.  First OBs degrade in radiation, not just in UV
exposure.  Have you considered that you might be in an area that has a Radon gas
problem?  A long shot, I admit, but it's always a possibility.  It's more common
than people realize.

The second thing is that I believe that Photrag has the OBs in the paper base
(it comes from the raw material recycle rag source) not the coatings, so the
problem should not be incomplete, uneven coating.

Harvey Ferdschneider
partner, SKID Photography, NYC



Robert Rex wrote:

>  I'll chime in a bit here.
> My thoughts are that since Michael (in FLA) is having different experiences
> from Jeff, and that Jeff's (located where?) experience has been yellowing
> not due to light, that the yellowing may be due to the OBA's or some
> reaction between the OBA or coating and the environment.
> first question:  how are the Hahnemuhle papers packaged?  I remember
> Somerset E had a yellowing problem several months back which seemed to be
> caused from a reaction between the coating and the plastic bag in which it
> was packaged.  I think this has now been corrected.  I also remember that
> the Lyson FA (hahnemuhle re-branded) papers turned yellow when exposed to
> corrugated cardboard (probably the acid in the cardboard leaching into the
> FA paper.
> second question: what is the environment in your studio, Jeff?  humidity,
> temperature.
> third: see if there is a lot number on the package.  report it to whomever
> you purchased that box from.  it may be a bad batch, and see if you can get
> a replacement box.  If you can, than with the replacement box try something
> different: get the RH to at least 50% (temp at 65-75) and keep the paper in
> the same room withe the ink and printers.
>
> ...Or just use Museo {insert very big grin here} and help pay for my salary;).
>
> hope these thoughts help,
> sincere regards
> robert rex
> yes, i still work for crane & co
>
> At 01:30 PM 2/9/02 -0800, you wrote:
> >
> > ----- Original Message -----
> >""<>
> ><>
> > Sent: Saturday, February 09, 2002 9:33 AM
> > Subject: Re: [Digital BW] Photorag 308 turning yellow
> >
> >
> >
> > (snip)
> >
> >> Can anyone recommend a paper with similar white base
> >> and dmax? I suspect that the other Hahnemuhle papers using
> >> OBs will yellow as well. Too bad.
> >
> > Jeff,
> >
> > Any paper with a base as white or whiter than Photo Rag is going to have
> > OBA's. Including all of Hahnemuhle papers.
> >
> > Eclipse Satine is a favorite of mine. A very neutral white and brighter than
>
> > Photo Rag but it also has OBA's.
> >
> > Museo has no OBA's but you will probably find that both the Dmin and Dmax
> > are not up to the level of papers with OBA's.
> >
> > Since there have been no other reports of yellowing Photo Rag, I wonder if
> > there is something else going on in your environment.
> >
> > Martin
> >
>





[Non-text portions of this message have been removed]