Re: Tissue

On Mon, 23 Oct 2000, Witho Worms en Jorien van Santen wrote:

> My message last time was not much about bubbles in the print. I
> wondered if the surface of a carbon tissue shows in the final print.

I've wondered that myself. My current belief is that the surface texture
of the carbon tissue doesn't matter that much. After all, you really
never see this surface, at least not in single transfers since it is the
part of the image that is "glued" to the final support. In the double
transfer the surface texture is also modified by the intermediate support
that the images is developed on.

> bubbles). The papers with the gelatin poured on paper have a kind of texture
> on the surface, papers that came loose from the plexi are totally flat and
> shiny.

That is correct.

> Last weekend I made prints on different papers. A few on the 'gelatin on
> paper' kind and some on Hanfsteangl paper that I still have. The Hanfsteangl
> surface is very smooth, much better than my home made but les smooth than
> the plexi kind paper.

That is kind of interesting. The Hanfstaengl tissue samples I have show a
surface texture very similar to the "poured on paper" tissues I've made.

> I printed a negative with a large neutral background on it. The background
> in the print is for both papers different. Is is smoother and more uniform
> in the Hanfsteangl than it is in 'home made'. All my prints were single
> transfers on fixed out baryta papers.

I too have had problems with neutral backgrounds such as the sky. In my
case, the mottling seems to stem from the textured surface of the gelatin
that forms when peeling the backing tissue. The thicker "ridge" areas
develop more slowly than the "valleys". So far, the only solution I've
been able to find is simply to develop the image a bit longer. The
thicker ridge areas will ultimately catch up to the slightly thinner
regions if given a chance. I've also tried running water over the print
which accelerates the development and evens out the tone in these areas.
Perhaps someone else has a better method?

> Does the surface texture of a carbon tissue affect the print?

I don't think so. At least, not to a particularly great degree. It
depends on the size of the surface texture or defect of course.

> Do scratches on plexi (that show on the tissue) affect the print ?

I believe you are alluding to the small surface defects on the Plexi? In
this case no. I've never had a problem with small surface defects.

> Another thing. I receive a lot of messages as a so called multi-part message
> in MIME format. And I think this reacts on my messages. Is it because I have
> used a so called Rich Text option in Outlook ? In this message I used Plain
> Text.

Yes, using formated text is what causes the multi-part MIME message.
What happens is your software creates an ASCII version of you message
followed by a second duplicate copy containing formating codes. If you
want to see what your messages look like in raw form check them out in the
Carbon list archive <http://rmp.opusis.com/pipermail/carbon/>. The web
browser shouldn't decode the MIME format and you can see what you are
actually sending. The idea is that you are giving the mail reader several
possible formats to choose when displaying your message. After all, a
good number of mail readers don't know what to do with formated text.
Recommended practice on mailing lists is to turn off the formated text
feature as you have now done.

- Wayde
  (wallen@lug.boulder.co.us)
Received on Mon Oct 23 09:48:40 2000