From: Liam Lawless (liam.lawless@blueyonder.co.uk)
Date: 03/04/03-04:26:23 PM Z
Keith,
The C-41 emulsion contains three layers of silver halides and colour
couplers. Oxidation by-products of silver development combine with the
couplers to form the C, M and Y dyes, after which the silver (thinner than
in B&W film) is no longer needed and is bleach-fixed away to leave just the
three dye images. Or something like that.
With a straight b&w developer, the coloured dyes do not form and you end up
with just a thinnish silver image. Plus, I think I read somewhere, the
unused couplers contained in oily globules, which I believe can be removed
(with alcohol, perhaps?)
Liam
-----Original Message-----
From: Keith Gerling [mailto:keithgerling@att.net]
Sent: 04 March 2003 19:06
To: alt-photo-process-l@sask.usask.ca
Subject: OT: C-41 in b&w chemistry
Can anyone here explain what would happen if C-41 film happened to be
processed in chemistry intended for black and white film?
(no, I didn't actually DO this. Just curious)
Thanks!
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