How to soften hardened factory made emulsion for pyro or additional sensitizing

[Mustafa Umut Sarac]

As above.

Umut

 

[Gerald C Koch]

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.

Dead Link Removed

 

[Hexavalent]

It is unlikely that an emulsion can be 'softened' pre-exposure and then have additional sensitization added.

 

[Ian Grant]

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]

I would be very interested to know what kind of further sensitization Mustafa has in mind.

 

[Mustafa Umut Sarac]

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