From: Witho Worms en Jorien van Santen (verzet13@xs4all.nl)
Date: 10/08/01-10:14:42 AM Z
Hello Sandy,
I will try your method later on. Now some information on the three points.
1 I pour the gelatin mix (my King I/just sumi ink etc.formula, as described
in your tutorial )on plexi. I wait a few minutes and than have a wet paper
(squeezed) over it. Let it dry in my darkroom. The result is a mirror like
black surface.
2 I sensitize in a 3% ammoniumdichromate solution, immersing the tissue for
3 minutes and hanging it to dry overnight in a dark room. (All done under
safe light conditions).
3 Alcohol dip is from Pollmeier as described in issue 2 or 3 in
Post-factory. It is an after squeeze pre development treatment to facilitate
stripping the tissue from the plexi.
Witho
----- Original Message -----
From: "Sandy King" <sanking@CLEMSON.EDU>
To: <alt-photo-process-l@skyway.usask.ca>
Sent: Monday, October 08, 2001 5:53 PM
Subject: Re: Carbon double transfer
>
> I have developed on many kinds of plastics and have not seen this
> kind of wave pattern. My procedure is quite simple. Soak the exposed
> tissue in cool water for about a minute, squeegee together with the
> plastic and place under a piece of plate glasss for 15-30 minutes,
> then develop in warm water for 6 minutes, stripping the tissue from
> the plastic at 2 minutes.
>
> My opinion is that your problem is not being caused by separating the
> tissue from plexi but by one of the following:
>
> 1. method of making tissue, including drying
> 2. method of sensitizing
> 3. alcohol dip
>
>
>
> Sandy King
>
>
>
>
>
>
> >I'm busy doing double transfer carbon printing. Until now I am getting
each
> >time marks from, I guess, separating the tissue from the plexi (wave like
> >patterns as the sea leaves on a beach). Before developing I give the
plexi
> >with tissues a 10 minute rest and after that a 2 minute alcohol dip. How
can
> >I avoid these marks.
> >I have separated tissue and plexi after two minutes but also after 4
minutes
> >of development in 40-42 Celsius. In both cases I had the marks.
> >
> >Witho
>
>
> --
>
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