U of S | Mailing List Archive | alt-photo-process-l | Gum and Photogravure, was: varnishes

Gum and Photogravure, was: varnishes

I agree.  Thanks Loris.  And yes, the best oil-based etching inks are made from linseed.

I believe you are right about carbon, from what little I know about it, but is there any evidence to support the idea that a gum print is more stable than an oil painting (or oil-based photogravure print)?


Loris Medici wrote:
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15 Kasım 2008, Cumartesi, 9:30 pm tarihinde, Jon Lybrook yazmış:
... Oil based ink on cotton rag or alpha cellulose paper is essentially
pH neutral anyway, isn't it? ...

Shouldn't be if it's the same oil (linseed oil) they use in oil
painting... But of course since it's a lot stiffer than regular oil paints
it should have much less oil. Anyway, the oil (and acid) is still there.
So, I wouldn't consider a photogravure print as archival as say a carbon
or gum print made with non-fugitive pigments. But probably the comparison
is moot - only a consideration for historians...



Jon Lybrook
Intaglio Editions