Test of Coffee Toning
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Test of Coffee Toning
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coffee developer
Akki14

Test of Coffee Toning

Using JerseyVic's suggestion of halftoning cyanotypes using coffee instead of tea. Partly bleached back in tap water, put in a tray of cold coffeemakerbrewed black coffee, left it in for a short time, then rinsed with boiling tap water.
I think I like this a lot more than tea toning since tea seems to stain the paper worse.

Oh and this was one of my many many rejects from my printing for the Alt Process Exchange Round 5. Useful for guineapigging.
Click to expand...
Location
Art deco buildings along A4, West London
Equipment Used
Brownie No.2 Model F
Film & Developer
cyanotype bleached then toned in coffee
Paper & Developer
fabriano watercolour paper
Are you actually changing the image tone or is it just the base? The tannic acid in tea actually reacts with the cyan pigment to make it black - not sure that's the case here.

Nice shots, BTW!
 
Akki14
I get too much background staining with tea. This gives a nearlyblack without that staining.

Example of badly stained and the black cyanotype http://www.stargazy.org/photos/cyanotypes/tn/tonedkewpalace.med.jpg
They all come out that way... mid-brown paper on black which doesn't make a very nice image to me as I like high contrast everything.

Untoned example of the coffee-toned print: http://www.stargazy.org/photos/cyanotypes/artdecoproject/artdecoproject1aug.jpg
 
Vaughn
Great! It is good to have processes that gives one flexibility

I've "achieved" that heavy paper stain myself.

Coffee also has tannic acid. I am wondering if you would get the same look with tea -- but using it very dilute. I tried to do a quick Google on coffee and tannic acid to get some numbers (ie, amt of tannic acid), but it became more than (less than?) quick.

Vaughn
 

Media information

Category
Experimental Gallery
Added by
Akki14
Date added
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Image metadata

Filename
bleachedcoffeetonedboilingwater.jpg
File size
60 KB
Dimensions
500px x 750px

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