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From: jer@peora.UUCP (J. Eric Roskos)
Newsgroups: net.rec.photo
Subject: B&W Darkroom Question: color swirls
Message-ID: <868@peora.UUCP>
Date: Sat, 27-Apr-85 12:35:39 EDT
Article-I.D.: peora.868
Posted: Sat Apr 27 12:35:39 1985
Date-Received: Sun, 28-Apr-85 23:26:47 EDT
Distribution: net
Organization: Perkin-Elmer SDC, Orlando, Fl.
Lines: 36

This is a question I have asked literally dozens of photographers, but have
not yet found an answer.

About 10 years ago, when I was first starting out in photography (in high
school), I took a course taught at my high school by the mother of one of
the students.  One day in the course, we took a field trip to her house to
see her darkroom.

On the wall in her hallway, she had many very unusual black&white prints.
What was unusual about them was that they were covered with colored swirls,
resembling the patterns that used to be printed on the edges of books a long
time ago.  The colors were those you see on tarnished silver.

(These were fairly normal prints otherwise, i.e., they contained pictures
of various things, not just the swirls; the swirls just colored in the
picture.)

We asked her how she did it, but she refused to tell us; she claimed that
she had discovered it and was now trying to patent the process.  At the time
I was somewhat skeptical; but since that time, I have found no one who knows
how to do it.

I have accidentally produced the colors myself sometimes; if you are
developing a piece of B&W film and some of the developer gets trapped
against the film through the stop bath and fixer, it produces one of the
colors, usually red or blue.  But I have never been able to do it on a print,
nor have I been able to produce the swirls.

So my question is... how is it done?  Has anybody out there ever seen this
process before?  I suspect it produces the same thing that tarnish on silver
is; but how to do it eludes me.
-- 
Full-Name:  J. Eric Roskos
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