[pure-silver] Re: Increasing Warmth In Ansco 115, Dassonville D-3 , et al

  • From: Eric Nelson <emanmb@xxxxxxxxx>
  • To: pure-silver@xxxxxxxxxxxxx
  • Date: Sat, 18 Aug 2007 13:56:51 -0700 (PDT)

I'm using the glycin version.  1:5 was pretty puny to
work with so I employed the scientific method of
sapinkling a little hydroquinone and glycine into the
working solution and that gave it a little boost.

Ahh yes I forgot all about my great grand pappy's
formula. (jk!)
I have a 1/2 gallon of that here and might as well use
it on some.   I always liked the look of Nelson GT.
Eric

--- Richard Knoppow <dickburk@xxxxxxxxxxxxx> wrote:

> 
> ----- Original Message ----- 
> From: "Nicholas O. Lindan" <nolindan@xxxxxxxxxxxxx>
> To: <pure-silver@xxxxxxxxxxxxx>
> Sent: Saturday, August 18, 2007 2:01 PM
> Subject: [pure-silver] Re: Increasing Warmth In
> Ansco 115, 
> Dassonville D-3 , et al
> 
> 
> > From: "Eric Nelson" <emanmb@xxxxxxxxx>
> >
> >> Would there be any warmth benefit in adding
> anything
> >> to the 115 formula or increasing the amounts of
> any of
> >> the components?  [to increase image warmth]
> >
> > You can try increasing the bromide from 4g/l stock
> to 
> > 10g/l
> > stock, a la WW-1.
> >
> > Or try Ansco 110, a hydroquinone only developer.
> >
> > --
> > Nicholas O. Lindan, Cleveland, Ohio
> > Darkroom Automation: F-Stop Timers, Enlarging
> Meters
> > http://www.darkroomautomation.com/index.htm
> > n o lindan at ix dot netcom dot com
> 
>       There are two Agfa formulas numbered 115. The
> older 
> formula, found in European Agfa handbooks contains 
> Hydroquinone as the sole developing agent and
> results in 
> great loss of paper speed and some loss of Dmax for
> greatest 
> warmth. The other formula is a Hydroquinone and
> Glycin 
> formula found in handbooks published by Agfa-Ansco
> in the 
> U.S. If this is the one you are using there probably
> isn't 
> anything which will produce warmer tones although
> Gevaert 
> had some interseting very warm tone formulas.
>       Another possibility is to try Nelson's Gold
> Toner. 
> This is a direct toner which is supposed to tone all
> 
> densities evenly. It is somewhat expensive because
> it 
> contains some Gold Chloride.
>       Prints toned in Nelson's must be fixed again
> after 
> toning if the images are to be permanent. This step
> was left 
> out of some versions of the Kodak instructions. Both
> Kodak 
> and Agfa were licensed and have instructions but the
> best 
> are found in the patent itself, USP 1,849,245. A PDF
> version 
> of this can be downloaded from Google Patents.
>       AFAIK, the protective effect of Nelson's has
> never 
> been tested but, if the final fixing step is carried
> out, 
> the images should be as stable as those from other
> sulfiding 
> toners.
>       The Gold tends to shift the color toward red a
> bit so 
> it may mimic very warm tone paper better.
>       Note that the image color of untreated silver
> is 
> mostly controlled by the grain size and structure,
> warmer 
> tones coming from finer grains. In general, the
> warmer the 
> tone the more vulnerable the images are to polutants
> due to 
> the increased ratio of surface area to mass. This is
> also 
> mainly why they tone faster.
> 
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@xxxxxxxxxxxxx 
> 
>
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