Durst 370 Enlarger problem

Discussion in 'Darkroom Developing and Printing' started by lihpphil, Dec 12, 2006.

  1. lihpphil

    lihpphil Guest

    Hello

    I have a Durst 370 BW with an anti-newton glass, a cache for black
    margin (sixma) and an old Schneider Componon 50 4.0 (smaller skrew).
    The AN glass is in the upper part of the neg. carrier and the cache in
    the lower part. I do prints with the lens closed by two or three stops.

    I have the following problem:

    When I do prints 18x24 or 24x30 cm I observe gray area along the long
    side of the image outside the black margin. Of course I can use the
    feeder to remove them but I think I have some problem with my system
    and I don't know the source (condenser, alignment, lens,...)

    Thank you for answers.

    Philippe
     
    lihpphil, Dec 12, 2006
    #1
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  2. lihpphil

    lihpphil Guest

    I can add a drawing of the problem: the ~~~~ represent the unwated gray
    region. The width is around 1 mm on a 24x30 cm print.


    ~~~~~~~~~~~~~~~~~~~~~~
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    _________________________________________________________
    |
    |
    | ^
    |
    | black marging
    |
    |
    |
    |
    |
    | IMAGE
    |
    |
    |
    |
    |
    |
    |
    |
    |
    |
    |
    _________________________________________________________
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     
    lihpphil, Dec 12, 2006
    #2
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  3. lihpphil

    Hans Guest

    Hallo Philippe,
    Is this problem new, and only with thos 370?
    It is possible that the problem is your easle , try to make a image with
    another easle or without easle.
    Greetings,
    Hans
     
    Hans, Dec 12, 2006
    #3
  4. lihpphil

    darkroommike Guest

    The carriers for most Durst enlargers have masking bands,
    the gray areas you mention are probably formed by non-image
    light, if you adjust the masking bands so that they cover
    most of area of the carrier it may help. You can also mask
    the top of the carrier--above the film but below the AN
    glass with black paper to see if that helps.

    If not you may need to adjust your lamp per the manual
    and/or check to make sure you are using the right condenser
    setup for your lens.

    Last possible, it could be your lens, try to borrow another
    lens of the same focal length.
    darkroommike
     
    darkroommike, Dec 14, 2006
    #4
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