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  1. #1
    Mustafa Umut Sarac's Avatar
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    How to soften hardened factory made emulsion for pyro or additional sensitizing

    As above.

    Umut

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    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/im...ct_for_web.pdf
    A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.

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  3. #3
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    It is unlikely that an emulsion can be 'softened' pre-exposure and then have additional sensitization added.
    - Ian

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    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

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

  6. #6
    Mustafa Umut Sarac's Avatar
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    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



 

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