[pure-silver] Re: FW: Re: What happend? CORRECTION

There must be a significant chemical difference between the pure white 
borders and the light grey 
areas when it comes to forming the pinkish or golden brown stain.  I have 
some prints where the brown
stain follows the density contours in the image exactly (like a 
posterization line) slightly darker grey areas
are not affected and white areas are not affected.  It almost always seems 
to be the lightest grey 
areas that are effected.  Again I have never seen this with my fibre 
prints, only RC. 

Did my darkroom care change that much when I switched to exclusively fibre 
paper for all display prints? 
Or is it completely due to using a two bath fix process, which I always 
use with fibre prints.
I don't know.  My stained prints are all at least 7 years old.

Sandor 
pure-silver-bounce@xxxxxxxxxxxxx wrote on 06/29/2006 07:58:38 AM:

> I suddenly realised my test was not complete: I only tesed the white
> borders, so I also put some 1+9 KRST on the golden borwn coloured area,
> and sure enough: a bright red stained spot appeared (which could be
> wipped of easily), so it's inadequate fixing after all, and through some
> "funny agitation" the borders are still white (somehow I find this hard
> to believe: the white borders arearound the grey , now brown sky and
> there is an abslute sharp border between both colours)
> 
> Best,
> 
> Cor
> 
> > -----Original Message-----
> > From: Breukel, C. (HKG)
> > Sent: donderdag 29 juni 2006 13:42
> > To: 'pure-silver@xxxxxxxxxxxxx'
> > Subject: RE: [pure-silver] Re: What happend?
> > 
> > Hi Richard,
> > 
> > >
> > >    It could still be incomplete fixing. Some methods of
> > > agitation will cause more flow at the edges of a print than
> > > others. This can also be true of washing. The blotchy effect
> > > sounds like insufficent fixing to me.
> > >    One way to find out is to test the print using either the
> > > sodium sulfide test or the Selenium toner test. The Selenium
> > > test is simply a solution of KRST diluted 1 part toner to 9
> > > parts water.
> > 
> > 
> >     Place a drop of either solution on a clear area of the
> > > print or film. Leave for a minute or two and blot off. There
> > > should be no visible stain.
> > 
> > 
> > I just did above test with KRST 1+9, no visible stain (the print was
> > untoned)
> > 
> > I got offlist an JPEG which npretty much showed the same phenomena,
> golden
> > brown colour in a small "grey-zone", only on a partculair size of
> paper
> > 
> > Best,
> > 
> > Cor

Other related posts: