MessageI find that even tannic acid stains the paper significantly, in fact there doesn't seem to be much difference in staining between tannic acid and green tea. The colour is a little different though (tannic acid is pinker which I find more pleasant).
Dave
----- Original Message -----
From: Loris Medici
To: alt-photo-process-l@usask.ca
Sent: Thursday, April 20, 2006 12:10 PM
Subject: RE: Toning the Cyantoype
What is your bleach? Mild alkalis such as sodium carbonate, ammonia, borax all work well as cyanoype bleaches. If you're mentioning ordinary Sodium Hypochlorite bleach, it's no good for bleaching cyanotypes...
BTW, Toning with tea will stain the paper considerably, if you can find tannic acid it would work much better, without staining...
Hope this helps,
Loris.
-----Original Message-----
From: trevor cunningham [mailto:tr_cunningham@yahoo.com]
Sent: 20 Nisan 2006 Perşembe 09:46
To: alt-photo-process-l@usask.ca
Subject: Toning the Cyantoype
Wicked cool...found a bunch of toning recipes and tools to get me started: tannic acid from tea bags (are earl grey, ceylon, or green tea variations important to note?), instant coffee, and lead acetate...I have all three of these and access to loads of household bleach...does the lead acetate tone require bleaching? my stack of cyanotypes awaits...
Enjoy...Trevor Cunningham
Received on Thu Apr 20 06:36:06 2006
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