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Mustafa Umut Sarac
08-23-2013, 05:16 AM
As above.

Umut

Gerald C Koch
08-23-2013, 10:24 AM
The following article describes how to soften a hardened emulsion using a permanganate solution. The paper also contains a lot of other very interesting information.

http://www.notesonphotographs.org/images/2/20/Jens_Gold_ARP_Project_for_web.pdf

Hexavalent
08-23-2013, 10:36 AM
It is unlikely that an emulsion can be 'softened' pre-exposure and then have additional sensitization added.

Ian Grant
08-23-2013, 10:51 AM
It used to be quite common for emulsions to have extra sensitisation for some highly specialised uses but modern emulsions aren't respomsive to those techniques.

Prints that have been through a hardening fixer were often soaked in a weak Sodium Carbonate solution to soften the emulsion.

Ian

Tom1956
08-23-2013, 11:37 AM
I would be very interested to know what kind of further sensitization Mustafa has in mind.

Mustafa Umut Sarac
08-23-2013, 01:20 PM
Hello all,

I was surfing the APUG and some posts have made me think this. I posted an another post to Alternative section and Ian replied me with interesting information. He says this is between Carbro and Dye Imbibition. I have to search for Carbro.

I think Ian Grant's post is extremelly interesting.

Ian Grant ,

Can you shed more light to your post please , is it applicable to films also ? And why modern emulsions are not responsive ? Which factory made emulsions interesting for additional sensitizing ?

My interest is to make everything factory made and sold for few dollars , more interesting. I cant coat a film like Kodak at home. For example , making factory made emulsions softened and make them have relief with pyro developer , make inkjet printers print palladium etc are my interest areas.

Tom , Ian Grant would answer your question better.

Gerald , Thank you.

Umut