RE: VDB metal bleed in water bath
You can try to use some Tween (or Ilfotol or Photoflo) in the coating solution (additionally; try to humify the paper before coating) - it seems you have coating solution absorbtion problems. I also occasionally got bleeding w/ double coated Vandyke but not staining (I mean on a perceptible / disturbing scale). Agitating more vigorously may help too. You can switch to another paper with a better sizing or size before using. (BTW, Sandy can provide you useful information about Stonehenge and iron-silver processes; IIRC, he uses/used that paper extensively for Kallitypes.) Regards, Loris. -----Original Message----- From: david drake [mailto:daviddrakephoto@sympatico.ca] Sent: 21 Aralık 2006 Perşembe 06:44 To: alt-photo-process-l@usask.ca Subject: VDB metal bleed in water bath hello Processing some VanDykes today, a number of them started 'bleeding' from the masked borders. This bleeding developed into stains. I tried both leaving the print image size down in the initial water bath (with very little agitation) and ,at the same time, not adding citric acid to the water bath. This did work, for the most part . I'm thinking that it was probably the inversion of the print which helped; but, could the citric acid play a part in this problem? If the initial water bath was too acidic could it cause bleediing? I should also say that I was printing on Stonehenge and the paper was double coated. I have found very little information about this staining problem and was hoping that someone might have some answers or at least a better remedy. I also really like the look of stonehenge with palladium toned VDB and am hesitant to switching papers. thanks david david drake photography www.daviddrakephotography.com
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