[pure-silver] Re: What happend? CORRECTION


-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx 
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Richard Knoppow
Sent: Thursday, June 29, 2006 2:20 PM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: FW: Re: What happend? CORRECTION



----- Original Message ----- 
From: "Georges Giralt" <georges.giralt@xxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Thursday, June 29, 2006 10:16 AM
Subject: [pure-silver] Re: FW: Re: What happend? CORRECTION


> Dave Valvo a écrit :
>> Question::::   On whose (manufacturer) RC paper are 
>> theses "stains" appearing.  Would like to hear from
>> everyone that has seen this. Dave
>>
> Hi Dave !
> I've one RC print showing bronzing and silvering. It is on
> 1998 vintage Agfa Multicontrast Premium paper. I do not 
> think it is bad processing, because I've an identical 
> print, made at the same time and treated the same which is 
> not showing any deterioration.
> The silvered print was on display into an office on a 
> totally air conditioned building (no possibility to open 
> any window...) Others prints in RC on display in this same 
> office, on Agfa's and Ilford RC do not show bronzing or 
> silvering but are going all brown like some sepia toner. 
> It is an overall change in color affecting also the 
> margins. So it seems that it is caused by some air 
> pollutant.
> I've somwhere a scan of the bronzed/silvered print to 
> show.
> Have a nice day !
> -- 

That there is damge should not be surprising.  One of the worst environments 
for prints are modern buildings which are sealed and usually have poor air 
exchange rates.  The amount of pollutants present causes damage to the silver 
image.  Outgassing from rugs, other fabrics, and wall board, as well as 
industrial cleaners have all been implicated.

Jerry
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