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  1. #41

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    here's a recipe for acetominophen dev:

    http://www.f295.org/Pinholeforum/for...1132019056,s=0

  2. #42

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    OK, just for fun I mixed up Ibuprofen, Aleve, and aspirin with sodium carbonate

    left a strip of Tri-x in it for an hour....

    there was a portion that did look developed...but....after putting it back in the fixer...it disappeared

  3. #43

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    Quote Originally Posted by DarkroomExperimente View Post
    what about these as developers?

    http://en.wikipedia.org/wiki/Salicylic_acid

    http://en.wikipedia.org/wiki/Aspirin

    I suppose if aspirin worked I would have heard about it by now....
    I don't know about its function as a developing agent, but salicylic acid is used in some developers -- specifically, Ryuji Suzuki's DS-10 and DS-12 film developers and his DS-14 and DS-15 paper developers. I seem to recall from an earlier version of his Web site that they're intended to increase shelf life. I don't believe Suzuki has ever mentioned them functioning as developing agents in these formulas.

    Concerning paRodinal and acetaminophen developers generally, they do work. My understanding is that the acetaminophen is converted by the hydroxide into p-aminophenol, and it's this which is the developing agent, not the acetaminophen per se. None of the pain relievers you mention, DarkroomExperimente, contains acetaminophen, AFAIK, and the reaction is specific to sodium hydroxide (sodium carbonate won't do the trick), so it's not a surprise that your pain reliever concoction didn't work. (OTOH, perhaps you could find some way to make it work by adding other things; I'm not a chemist and I know very little about these substances.)

  4. #44

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    thanks, I didn't expect it to work, but since it was there I decided to give it a shot while waiting for another concoction (mint) to get to temperature

  5. #45
    David A. Goldfarb's Avatar
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    Another thing for these tests is not to use film that has been sitting out in white light forever, or it may be solarized, so it won't necessarily turn black even in real developers.
    flickr--http://www.flickr.com/photos/davidagoldfarb/
    Photography (not as up to date as the flickr site)--http://www.davidagoldfarb.com/photo
    Academic (Slavic and Comparative Literature)--http://www.davidagoldfarb.com

  6. #46

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    thanks Dave

    I normally use film with images on it, but for quick tests I have used film that was just sitting out in the light

    thanks for the tip

  7. #47

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    mint developer worked

    ilford FP4+ somewhat overexposed...developed for 25 minutes....rather faint images

  8. #48
    htmlguru4242's Avatar
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    The patent is very interesting; seems easy to do and could be interesting to try.

    Great topic, by the way!

  9. #49

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    BTW...the mint didn't make the negative green....I was hoping it would

    one of the berry extracts left a nice purple tint...chocolate & coffee left a brown tone

  10. #50

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    I haven't tested these yet...but it seems Thyme, Rosemary, and Oregano look promising

    a couple of compounds are related to caffeic acid....one was a "dymin" of caffeic acid

    I don't know about parsley and sage, but Paul Simon was right about Kodachrome's bright colors, so they may be worth a try too



 

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