Digital BW, The Print

Steve and Harvey are correct. I didn't even consider the added security
measures that UPS, USPS, or FEDEX may be using these days (x-rays, and
other radioactive elements).  
Also, OBA's by their nature of an additive (whether in the raw material,
paper making process or coating process) are found throughout the sheet.
If you are finding that the yellowing is localized, then this would
indicate (IMHO) that there is something else is going on.
Steve, Mike: don't worry to much about the $600 of paper you just
bought...yet.  if your paper arrived well, and your storing your paper
well, and your store and exhibit your prints properly, then I think you
should be fine.  It wouldn't hurt to do a window test to be safe.  (and
yes, we are working on improving the dmax issue.)  I still think papers
without OBA's are more secure, but i do understand your perspective as
photographers
hope this helps
sincerely
robert rex

At 10:16 PM 2/9/02 -0500, you wrote:
>     First OBs degrade in radiation, not just in UV
>  Have you considered that you might be in an area that has a Radon gas
>   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.
>>   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
>>   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.
>>  humidity,
>> temperature.
>>  report it to whomever
>>  it may be a bad batch, and see if you can get
>>  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
>>& 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
>>>
>>
> 
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