Cor Breukel (cor@ruly46.medfac.leidenuniv.nl)
Thu, 28 Jan 1999 11:49:38 +0100 (MET)
On Wed, 27 Jan 1999, Liam Lawless wrote:
Hi Liam;
I am not sure if I understand the steps oulined below. You first process
your negatives "normal", and harden afterwards? I thought hardening of
negatives with modern emulsions was not necessary. On the whole I do not
fully understand the term "hardening". I thought that hardening of
negatives was ment to make them more resistant against scratches etc.
Wheras hardening (with Glyoxal after gelatine sizing is ment to preventing
consumption of the organic gelatine by micro-organisms. Seems to be
different purposes...
> wedge, I've only played with a few reject negs so far, but my
> processing sequence following redevelopment is as follows:
>
> 1. Wash, running water from cold tap, about 5 mins.
> 2. Non-hardening fix, about 2 mins (only because I have no hardening fix on hand).
> 3. Wash about 10 mins.
> 4. Hardening in 4% glyoxal, about 3 mins.
> 5. Wash, about 3 mins.
> 6. Final rinse with wetting agent & dry.
>
>>4. Redevelop in normal strength PMK, 15 mins. at
I also used redevelopment with Pyro; but I never used such a long
development. When I immerse my bleached negative in Pyro (Laban formula,
about 1,5 times stronger than "normal"); the image "shows up" pretty fast,
and after a couple of minutes there isn't no visible cahnge. Probably I
should take a better look at it, somehow I thought that re-development is
much faster than development..
Cor Breukel
http://ruly70.medfac.leidenuniv.nl/~cor/cor.html
"The Infrared Gallery"
http://ruly70.medfac.leidenuniv.nl/~cor/ir-gallery.html
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