[alt-photo] Re: casein+ alt to dichromate

[Mark Nelson]

Have fun Chris!

Mark Nelson
www.PrecisionDigitalNegatives.com
PDNPRint Forum @ Yahoo Groups
www.MarkINelsonPhoto.com

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On Jun 21, 2012, at 9:21 PM, Christina Anderson <zphoto at montana.net> wrote:

> Marek,
> 
> I know for a fact in my research today, if I learned anything, casein was in commercial carbon tissue in the late 1800s. I have a sneaking suspicion it was in a couple other papers, too, though the papers were said to be of "gelatin compounds." This was also during the time of Artigue paper which was said to be "the best."
> 
> The problem with researching is this: gum printing and casein printing were both termed "carbon printing" at the beginning along with carbon! I remember Katharine Thayer, bless her soul, refuting me on that saying it wasn't true. Well, I have all the BJP pages photographed or xeroxed to prove it. Then the term was "pigment printing" for a while. It is verrry difficult to separate it all out then when the names were not so distinct.
> 
> So you ask a good question.
> 
> Time for bed...
> 
> Chris
> 
> Christina Z. Anderson
> christinaZanderson.com
> 
> On Jun 21, 2012, at 10:08 PM, Marek Matusz wrote:
> 
>> 
>> 
>> Does anybody think that casien might have played some part in Fresson process. LIke in mixed gum/casein or layered gum/casein. I actually want to try developing casein in sawdust. Marek                         
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