U of S | Mailing List Archive | alt-photo-process-l | Re: Attn. Chris + All. Gum, Gelatine + Direct Carbon.

Re: Attn. Chris + All. Gum, Gelatine + Direct Carbon.

I am sure Art's patented process would be very helpful to anyone looking for a good working procedure. Art also kindly sent me, years back, a copy of his patent. Maybe, one day, my own formula, which does not contain gum, will be common knowledge. But I am afraid I am unable to share the results gained from so many hours of frustrating work without the financial ability to commercialize it if it was viewed to be viable.
I wonder how Dave Soemarko feels about this issue? I guess I feel much the same as the Fressons. All the same, it would be great if some enterprising person were to start making the Direct Carbon paper, again. Then, all the new generations of young photo artists would have an extra medium with which to work. Maybe that's too sentimental in this day and age.
One of the problems of commercially making and marketing a DC paper would be the lack of any guarantee as to successful results. Maybe one reason the Fressons discontinued that side of their business.
Dick Sullivan mentioned, very briefly, in a recent List posting, the ''ARVEL'' process. This paper was made and marketed by the Fressons for a period of approx. fifteen years prior to WW 2. ( Luis Nadeau). This process did not require great attention to temperature control and development was exlusively by weak Sodium Hypochlorite solution and cold water spray. Rather more like gum working. No messy sawdust needed. Here again, we have no published clues re. the emulsion formulae. Just imagine how popular this Arvel process must have been with amateur photographers when the war stopped everything short.
We have a lot of catching up to do. Nice w/e.
Later. John - Photographist - London - UK

----- Original Message ----- From: "Christina Z. Anderson" <zphoto@montana.net>
To: <alt-photo-process-l@usask.ca>
Sent: Saturday, May 26, 2007 4:16 PM
Subject: Re: Attn. Chris + All. Gum, Gelatine + Direct Carbon.
Now, as far as gelatin and gum, Art was so kind a few years back as to give me a copy of his patent. I run across articles on Fresson every now and again when researching gum, but of course, the articles are all sort of like "Well, the Fresson paper MAY contain this..."

The reason I am intrigued with the gelatin is that Echague said it provided a much more stable layer to use sawdust development with. But if I remember (Art can chime in here?) gum and gelatin do not mix well. But my gum printing formula is essentially a 1:1 mix (tho I use stock pigment mixes and use ammonium dichromate cut in half to a 15% dilution) so I don't have a clue how much gelatine or how I would do it.''