RE: Toning the Cyantoype

Maybe you're using too much tannic acid (I use one full dessert spoon
per litre... or the paper is not adequate; some papers stain more than
others). Do you clear your cyanotypes in citric acid after development
(and wash again)? IME, if I treat cyanotypes in citric acid after the
first wash (read as development) I get a much more contrasty image
(cleaner, white highlights - otherwise, the highlights are low contrast
and I can't get paper white) and much less staining (if any... in my
case it's not noticable *unless compared side-by-side with non-treated
paper*).
 
Regards,
Loris.

-----Original Message-----
From: David & Jan Harris [mailto:david.j.harris2@ntlworld.com]
Sent: 20 Nisan 2006 Perşembe 15:38
To: alt-photo-process-l@usask.ca
Subject: Re: Toning the Cyantoype

I 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 <mailto:mail@loris.medici.name> 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 06:50:34 2006