[pure-silver] Re: Agfa Paper Equivalent
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Sun, 8 Jun 2008 16:28:17 -0700
----- Original Message -----
From: "BOB KISS" <bobkiss@xxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Sunday, June 08, 2008 9:38 AM
Subject: [pure-silver] Re: Agfa Paper Equivalent
DEAR BOB,
Azo is contact speed paper. Isn't Agfa PRN 111 an
enlarging speed
paper?
If you DO want Azo or something very much like it, I think
Michael
and Paula are still selling Azo and a suggested
replacement for it. I know
they used to special order the enormous "minimum" required
by Kodak and
resell it. They are also selling a very similar chloride
contact printing
paper that they hope will replace Azo when Kodak does
quit.
Please see:
http://www.michaelandpaula.com/mp/newpaper.html
Sorry I can't help you with an enlarging speed replacement
for Agfa
PRN. Perhaps someone has picked up manufacturing that
paper as they did for
other Agfa products?
CHEERS!
BOB
AFAIK Kodak no longer has the cabability of making any
B&W paper. Azo was a slow contact printing paper but there
have been various emulsions sold under that name over the
years. For instance, my early Kodak data books describe Azo
as having a slightly warm tone image but the stuff sold more
recently was neutral tone.
While much was made of developing it in Amidol I doubt
very much if that makes much difference. Amidol is a useful
developer for getting neutral tones and had a reputation for
producing good blacks but I think the latter was mostly
urban myth. Modern papers are capable of somewhat deeper
maximum blacks than the papers of yore. Typical older papers
had a Dmax of perhaps 1.8 (glossy surface) compared to
around 2.2 for many modern papers. This is of no
significance for a reflection print.
At one time Kodak made at least four contact speed
papers with various characteristics, not counting foldable
paper made for mailing and similar uses. Ansco/Agfa made at
least two contact papers and I think another for automatic
printing machines used in photofinishing. All gone now.
You can contact print on any paper with a suitable light
source, usually an enlarger. There was no particular
advantage to the contact emulsions. I think this stems from
the fact that the very first enlarging papers were evidently
not very good but that was back in the 1920's.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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