RE: cyanotype toning and staining
Which paper(s) have you used in your toning trials? IME, some papers are more prone to stain with tannic acid + tea always stain much more than tannic... How heavy is the stain? Just a slight warming or much worse? Is the stain in the image area only or does it also stain the non-image area? Try to rinse/clear the paper thoroughly before toning: wash as usual, then clear in 2% citric acid, then rinse again and then bleach/tone... Try different papers to see if the stain is more (or less) pronounced depending on paper... I'm sure there will be other useful suggestions other than mine. Regards, Loris. -----Original Message----- From: Matti Koskinen [mailto:mjkoskin@koti.soon.fi] Sent: Wednesday, June 06, 2007 3:52 PM To: alt-photo-process-l@usask.ca Subject: cyanotype toning and staining hi, thanks to all for the information a while ago concerning one coat gums. Haven't had time yet to try them, but definitely will. I've been busy moving a to new house, and good thing is that I can get a decent darkroom there. On my voyage to alt-proc, I've learned to coat cyantypes, bought Dan B's inkjet compandion, got an uv-light source, made from two u-shaped fluorescent lamps and things are going on now with routine. So I tried toning the cyanotype prints first with tea and after that tannic acid. I bleached both with ammonia and sodium carbonate. I got nice brownish tone, but the highlights stained badly, lowering the overall contrast quite heavily. Is this normal or is there a way to avoid staining? There's nothing wrong with the prussian blue, but wanted to see how the prints look with different colours. thanks -matti
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