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  1. #1
    Murray@uptowngallery's Avatar
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    Brumberger 5x7 contact printer question

    I was just given a 5x7 Brumberger contact printer.

    Inside there are three incandescent lamp sockets and a sheet of (flashed?) opal glass.

    I looked online and found a picture of one with a frosted lamp, a clear lamp, and a red lamp.

    The red lamp I understand...to get things set up, adjusting the easel blades etc.

    Was there some purpose to using a clear vs a frosted lamp, considering it has an opal diffuser? Or maybe the clear lamp happened to be smaller, for different exposure times? It doesn't appear to have a switch to chose which lamp lights...it looks like it has one momentary switch to turn it on with pressure on top.

    Thanks
    Murray

  2. #2

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    One thing to check is how powerful the thing is. IIRC most [all?] contact printers were aimed at contact paper. Enlarging paper will be too fast.

  3. #3
    Murray@uptowngallery's Avatar
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    OK, maybe I put a Black Light CFL in it & use it for alt-process.

    Or the smallest lamp I can find for reg. paper.
    Murray

  4. #4
    richard ide's Avatar
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    Murray,
    Plug it in to a light dimmer and it will probably work well.
    Richard

    Why are there no speaker jacks on a stereo camera?

  5. #5
    Murray@uptowngallery's Avatar
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    I had a passing thought about that but it got knocked over by another thought.

    I have a Variac that should work.

    Murray
    Murray

  6. #6
    Joe VanCleave's Avatar
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    Or try a motor speed controller instead of a variac; these chop the duty cycle, rather than the peak voltage, so the color temperature of the lamp won't red shift as badly.

    ~Joe
    Last edited by Joe VanCleave; 05-29-2008 at 11:01 AM. Click to view previous post history. Reason: I kant schpell



 

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