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Signing artwork? ...and where?


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Craig:

 

"Basically archival problems in RC stock stem from the base-white pigment, titanium-white (TiO2) as opposed to Baryta used in FB. TiO2 has greater covering power and is considered chemically inert. But they forgot one important factor ...TiO2 is somewhat light sensitive. There are even a couple of obscure photographic processes based on this property."

 

Would you mind linking some info about this? 'Obscure photographic processes' I mean. Thanks!

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