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  1. #1
    titrisol's Avatar
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    Alternative Developers - Coffee and all

    Coffee is a very usable photographic developer for film and paper.
    Research carried out @RIT showed that coffee, mint leaves, tree bark and othe rplant extracts were suitable for the purpose.

    Shutterbug ran an article in it's September 2003 issue which sparked the interest of some people @the photo.net community.
    http://www.photo.net/bboard/q-and-a-...?msg_id=003aPB


    The recipes that were developed then were ccalled Caffenol or Folgernol and included sevral variations of the original.

    RECIPES
    Basic Caffenol from the article:
    8oz water 4tsp instant cofee 2tsp Na-Carbonate

    Caffenol Plus Caffenol + 1 tsp table salt

    Caffenol LC (low conrast for mini-film) by Donald Quails
    8 oz water, 2tsp coffee, 2tsp carbonate

    Bob Fowler has printed some great pics using J&C Classic 200,
    I have tested it in FP4+, APX100/400, Arista.EDU 400
    Don Quails has tested it in document film (microfilm)
    Last edited by Sean; 08-29-2004 at 02:01 PM. Click to view previous post history.
    Mama took my APX away.....

  2. #2
    titrisol's Avatar
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    Donald Quails wrote:
    Caffenol LC is 2 tsp. coffee crystals and 2 tsp. washing soda per 8
    ounces
    of water -- since I usually use it for 16 mm microfilm in my homebuilt
    tank,
    which holds two ounces, I mix it as 1/2 tsp. coffee and 1/2 tsp washing
    soda.

    For Imagelink HQ and Copex Rapid, 25 to 30 minutes at around 70 F seems
    about right -- both films tend to thin negatives anyway, if they're to
    have
    proper tonal range, and the clear base makes them thinner still. The
    same
    process would likely apply to Tech Pan, but I don't know of anyone
    who's
    tried it.

    The drill for both Caffenol and Caffenol LC is to mix in the soda and
    stir
    until all cloudiness and grittiness are gone, then add the coffee and
    stir
    until grittiness is gone again and the solution appears uniform.
    Mama took my APX away.....

  3. #3

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    Decaf or not? Seems pretty alternative to me. Need some now!

  4. #4
    titrisol's Avatar
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    I have only tested the normal instant coffee.
    The folger's crystals are reccommended but I bought Harris-teeter brand instant coffee and it worked as well.

    According to the research carried out by Don Qualls, decaf should work to, since the main developer agent is caffeic acid and the tannins in coffee.
    Mama took my APX away.....

  5. #5

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    Quote Originally Posted by titrisol
    I have only tested the normal instant coffee.
    The folger's crystals are reccommended but I bought Harris-teeter brand instant coffee and it worked as well.

    According to the research carried out by Don Qualls, decaf should work to, since the main developer agent is caffeic acid and the tannins in coffee.
    Will espresso increase contrast? And is steamed milk affecting the tonal curve?

  6. #6
    titrisol's Avatar
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    I decided to test Caffenol-c tonight...
    500 ml of water (for 120)
    1 gram Vitamin C
    4 teaspponns washing soda
    8 teaspoons instant coffee

    I tested it on J&C Pro 100 film, exposed at approx 100 (I giuessed most exposures) for 25 minutes

    The negatives look pretty good, the stain is there but les pronounced than my previous test that required longer times (30-45 minutes)
    I think that some 10-15 extra minutes would increase the stain and improve the shadow density

    I'll try to scan the negatives in a flat bed and let you know what happens
    Mama took my APX away.....

  7. #7

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    Human urine contains the toxic benzene known as pyrocatechin and can be formulated as a photographic developer for film and paper.

    Possibly a cheaper and more effective alternative to caffenol?

    And can most likely be made super-additive with daily ingestion of Vitamin-C?

    Sandy

  8. #8
    David A. Goldfarb's Avatar
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    I think that post needs to be ported over to the "favorite beer" thread.
    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

  9. #9
    Ed Sukach's Avatar
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    Quote Originally Posted by sanking
    Human urine contains the toxic benzene known as pyrocatechin and can be formulated as a photographic developer for film and paper.
    Hah!! I've got to remember this ... I'm only drinking all this beer to make developer!!!

    Amazing how the most "off-topic" discussions finally loop back to photography!!
    Carpe erratum!!

    Ed Sukach, FFP.

  10. #10

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    Quote Originally Posted by titrisol

    Caffenol Plus Caffenol + 1 tsp table salt
    Not to sound needlessly wonky, but is that iodized table salt or uniodized?

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