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Thread: Autochrome Exposed Plates , Removing its Emulsion and using the Screen

  1. #1

    Join Date
    Jul 2008
    Location
    Istanbul - Türkiye
    Posts
    56

    Autochrome Exposed Plates , Removing its Emulsion and using the Screen

    At APUG, We discussed much of the possibility to make an Autochrome Screen.

    I found that removing the panchromatic emulsion from the exposed EBAY Autochrome plate and use it as screen with modern emulsions , was something makes sense.

    My friend have 6 AGFA plate unexposed and he dipped the plate in to fixer and panchromatic emulsion peeled off smoothly.

    I want to do the same with exposed plates sold at ebay.

    By the way , for more technical concern , he reported dyed potato starch layer was protected by a varnish and nothing done on that screen.

    My friend suggested two ways , dipping the plate to distilled water or dipping the plate in hot water. He was not sure and an idea.

    What do you think , how can we remove the emulsion without harming 125 dollars plate ?

    Thank you ,

    Mustafa Umut Sarac
    Istanbul

  2. #2
    Dominik
    Join Date
    Apr 2011
    Location
    Austria
    Posts
    248

    Re: Autochrome Exposed Plates , Removing its Emulsion and using the Screen

    Dear Mustafa,

    I found an article about stripping the emulsion for conservation reasons from a glass plate unfortunately the article is in german http://cool.conservation-us.org/iada/ta95_117.pdf

    But the formula for the emulsion goes as follows: hydrofluoric acid 100% diluted to 4% with a solution of equal parts distilled water and
    100% Alcohol according to the article it will take about 2-3mins to remove the emulsion

    Good luck
    Dominik

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