From: Loris Medici (lorism@tnn.net)
Date: 07/20/03-03:45:31 AM Z
I don't think that exposing a cyanotype to sun light is a good idea (see
below). This is not how a fine art print should be treated anyway...
According to Christopher James' book a cyanotype exposed to strong sun light
will eventually (and definitely) fade. Cyanotypes don't like sun and alkali
conditions. If fading due to sun light occurs, prints sometimes may be saved
(in other words: gain their original color) by storing in a dark place for a
couple of weeks. The author also states that the tannic acid toned
cyanotypes he made 20 years ago show no signs of deterioration.
Regards,
Loris.
----- Original Message -----
From: Robert W. Schramm
To: alt-photo-process-l@sask.usask.ca
Sent: Sunday, July 20, 2003 5:36 AM
Subject: Re: Toning Cyanotype
I think the idea that tanic acid toned cyanotype are not permanent is
another myth like the one about cyanotype itself not being permanent. I have
some, at least, ten year old cyanotypes that were toned with tanic acid that
show no sign of fading. I also have a cyanotype postcard with a 1904
postmark that looks just fine. If you are worried, why not put a toned
cyanotype in a sunny window for about a month. Cover one half with black
paper. That ought to give you some idea.
Bob Schramm
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