Digital BW, The Print

A factor that is hard to track is indoor air quality issues.  These can
affect the fade tests, I believe. 

 

Indoor air pollution has browned wet process RC prints of mine in the past.


 

In general, air borne acids and oxidizers, often in conjunction with
humidity, seem to accelerate paper and image deterioration significantly.
One thing that limits our ability to rely on Wilhelm or other accelerated
aging tests is that they are based on an ideal environment, which is
something we are not guaranteed.  So, indoor air quality may be an issue
that affects our various tests and results.

 

Spray coatings may be able to help with some air quality issues.  

 

What I'd like to see for archival purposes is encapsulated carbon - humidity
and pollution blocking barriers on both sides of an image sandwich.  Inside,
the coating companies need to compete for in terms of the zeolites, buffers
and other defensive strategies to capture the airborne hazards.

 

Paul

www.PaulRoark.com <http://www.paulroark.com/>  

 

 

  _____  

From: DigitalBlackandWhiteThePrint@yahoogroups.com
[mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Richard
Smallfield
Sent: Wednesday, December 06, 2006 7:59 AM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: Re: [Digital BW] Informal Fade Test

 

At 02:15 AM Thursday 12/7/2006, you wrote:
>Your experience is closer to mine were EEM is concerned, but I have a 
>question-did you pin the prints directly to the wall with no backing 
>or barrier, and what kind of paint is on the wall? I've had 
>indications that latex paint for one, will yellow inkjet paper faster.

No backing, acrylic paint ... But! The same thing happens if they are just
sitting on my desk which is plain wood.

Rich

--
http://smallfield. <http://smallfield.vze.com> vze.com
http://photos. <http://photos.smallfield.vze.com> smallfield.vze.com (Photos
web site)
http://warkworth. <http://warkworth.vze.com/> vze.com/ (Warkworth photo
essay)

We shall not cease from exploration
And the end of all our exploring
Will be to arrive where we started
And know the place for the first time.
--T.S. Eliot, Four Quartets, 'Little Gidding'

 



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