Support our Sponsors, they keep FADU free:   AG Photographic   Keyphoto   The Imaging Warehouse   Process Supplies   RH Designs   RK Photo   Second-hand Darkroom Supplies   Silverprint Ltd

Notices

Go Back   Film and Darkroom User > Monochrome Work > Print Finishing

  ***   Click here for the FADU 2015/2014 Yearbooks   ***

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 20th July 2013, 11:56 AM
DaveP DaveP is offline
Friend
 
Join Date: Dec 2009
Location: Sheffield
Posts: 990
Default Old print turning silver

I'll throw this open to the floor.

A recently my grandma died and after her stuff was cleared out we found a few old prints, including an old and slightly torn print from her wedding in about 1947. The dense areas of the print are going metallic-looking, starting from the outer areas.

Now I managed to get a passable scan of the print done for posterity and so we could do family a digital copy (we don't have the neg) but I was wondering if there's any any process that can be done to reverse or halt the silvering of the print? I'm guessing the print will not have been toned originally. You guys and gals will have to advise here as I am not a printer so only have a passing understanding of these matters.

Cheers
Dave
Reply With Quote
  #2  
Old 20th July 2013, 12:39 PM
Lostlabours Lostlabours is offline
Friend
 
Join Date: Apr 2012
Location: West Midlands/Aegean
Posts: 1,663
Default

Back in the 1970's I did a lot of work with a museum, I used a weak ammonia solution to remove the collidal silver which migrates to the surface. It's caused by poor washing and fixing and then atmospheric action converting the silver thiosulphate complexes back to silver metal.

Ian
Reply With Quote
  #3  
Old 20th July 2013, 01:04 PM
DaveP DaveP is offline
Friend
 
Join Date: Dec 2009
Location: Sheffield
Posts: 990
Default

Is there any risk involved with that Ian? I'm wary of doing anything that has any potential to knacker the print.
Reply With Quote
  #4  
Old 20th July 2013, 01:32 PM
Lostlabours Lostlabours is offline
Friend
 
Join Date: Apr 2012
Location: West Midlands/Aegean
Posts: 1,663
Default

It needs experience ideally, it needs to be done slowly and with care. I was dealing with all sorts of photographs from an archive, some weredamaged images which had been damp and had fungal attack.

In some cases I would harden the emulasion first with a formaldehyde solution, sometimes re-fixing, other times just a gental teasing with cotton wool and ammonia solution was enough.

Usually you test the effects on the emulsion on the rebates before proceeding.

I'd had plenty of experience as my grandmother had stored all her family photographs in a cellar, no-one knew there was a stream under a flagstone in the center and there was considerable damage. In this case all the images were hardened then toned to prevent further chemical deterioration.

Ian
Reply With Quote
  #5  
Old 20th July 2013, 06:56 PM
numnutz numnutz is offline
Friend
 
Join Date: Jun 2009
Location: SW London
Posts: 144
Default

Make a copy photograph first (On film) then do a digital scan. Make sure you have made your best efforts in case you damage the print using chemical treatments.

nn
Reply With Quote
  #6  
Old 21st July 2013, 07:14 AM
Paulographic Paulographic is offline
Friend
 
Join Date: Jun 2010
Location: Mid Pennines
Posts: 778
Default

A framer I used to use would gently rub with a soft cloth some zinc and castor oil cream into old photographs with this effect if not too badly affected to restore a more normal appearance when put under glass. I tried it once and it worked so that I could scan and then tweak a bit in Photoshop.
Reply With Quote
Reply
Support our Sponsors, they keep FADU free:   AG Photographic   Keyphoto   The Imaging Warehouse   Process Supplies   RH Designs   RK Photo   Second-hand Darkroom Supplies   Silverprint Ltd

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Silver Nitrate. CornishPaul Sale or Wanted 4 4th January 2013 12:46 PM
Silver reactions paulc Photography in general 3 15th June 2011 05:33 AM
Silver content Dave miller Photography in general 3 7th June 2011 12:34 PM
Silver Nitrate Roy_H Sale or Wanted 1 16th March 2011 06:25 PM
Silver Toner AmericanMrs Toning 6 22nd November 2010 01:52 PM


All times are GMT. The time now is 01:57 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.