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  1. #11

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    I always thaught that "In Camera" meant exposing and development in side the camera.

  2. #12

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    KK i guess you are right there, i will try and change the thread name.

    PE doing a bit of searching i have found that cuporous oxide is indeed light sensitive, you can make a solar cell by heating a copper plate and making a layer of cu2o , and you can make it by Electrolysis useing salt water and copper ELECTRODES, and use the left over salt water as weed killer.

    So from what you are saying it needs to made in the dark, and kept in the dark and should be yellow.
    How were you useing it ? as it appears to be water insoluble

  3. #13
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    Bruce;

    It is made in a polymer and then coated on support such as film or paper. On exposure and development, you get a copper metal negative image and a cuprous oxide positive image. The cuprous oxide can be dissolved. The speed is similar to Kodabromide paper.

    If you precipitate it without a polymer to protect it, the crystals will clump and become useless.

    PE

  4. #14

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    Thanks PE
    your comments makes it a fair bit more complex to do this process.
    more thinking time

  5. #15
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    Try the textbook by Khosar on alternate processes. I don't remember the title, but I found it very interesting.

    PE

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