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  1. #1
    delphine's Avatar
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    Drying screens - screen pattern on paper

    Hi,

    I am having a very high level of rejects of my final prints. I am seeing like tiny chips at the surface of the emulsion. They are best detected when holding the print side ways. (Paper = FB Ilford MGIV Glossy).

    Whilst reviewing my rejects, I detected on one of the prints the pattern of the drying screens. I am using dedicated Kostiner drying screens. Nothing else than properly washed prints ever go on the drying screens.
    I sponge the water out on the emulsion side of the prints before laying them emulsion side down on the drying racks.

    Have any of you experienced this problem? what are your recommendations to alleviate this issue.

    Thank you for your help on this,

    Best

    Delphine

  2. #2

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    They are sticking a little, so put them emulsion side up.

  3. #3
    MarkL's Avatar
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    I dry prints face down on fiberglass screen too, after using a squeegie to wipe water off both sides. Works great and the prints dry pretty flat.

  4. #4

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    Maybe the screens need cleaning? Face up would be the safest, though.
    I think a couple of oz of clorox in a gallon of water is recommended once in a while. Someone else may know better. I used to use screens, and hang my prints up now to avoid this.

  5. #5
    Thomas Bertilsson's Avatar
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    I've had this problem also, but since I started using a squeegee to get most of the water off the prints prior to them going onto the screens, I haven't had a problem.
    This was particularly bad, because even though I have an archival print washer, and my fiber based prints are usually in there for 3-4 hours, when I commenced with toning the prints, those 'patterns' from the screen would readily appear as uneven toning.
    So what I do now is squeegee, then hang up for an hour, then the screens. No more problems and reasonably flat prints. I use Ilford MGIV warmtone, so it's a similar product.

    - Thomas
    "Often moments come looking for us". - Robert Frank

    "Make good art!" - Neil Gaiman

    "...the heart and mind are the true lens of the camera". - Yousuf Karsh

  6. #6
    delphine's Avatar
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    I forgot to mention that indeed, the prints were toned. So I take on-board Thomas argument.

    I think that my sponging which is done with a soft tissue is equivalent to your squeegeeing. I find it that MGIV curles substantially more than WT, they would be very difficult to work with if they were drying face up.:rolleyes:

    I'll try hanging them as you suggested before laying them on the screens.

    Any other suggestions ?

  7. #7
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    The only time I have had screen marks is when I have used no hardener in the fixer. Also Sepia Toning will re-soften the emulsion...I do not know about selenium toning, but I have not had problems after selenium toning.

    If you do not use a hardener, hanging the prints or drying face up for awhile will allow the emulsion (gelatin) to harden on its own before putting them face down on the screens.

    Vaughn
    At least with LF landscape, a bad day of photography can still be a good day of exercise.

  8. #8
    yardkat's Avatar
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    I had this happen in the public darkroom where I print, I cleaned the screens with a bleach/water solution and it took care of the problem. If I'm feeling particularly paranoid about it, I dry face up. It does add more curl to the paper, though. I just checked my records, and I used a 50/50 bleach/water solution, rinsed THOROUGHLY, and put back in the rack to THOROUGHLY dry before I used them again.

  9. #9

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    You may want to think about putting archival blotting paper on the screens and the squeeged prints on them to dry. Eliminates the possibility of marks from the screen. Silverprint have them in packs of ten, (bit bigger than 16x20) for about £5 plus VAT. Face down gives less curl. Except I think for Ilford Warm Tone Glossy FB which can stick to the paper, so is best emulsion upwards. Matt surface is fine. I did a load of Matt MGWT 20x24s today and they are hopefully happily drying face downwards, each on two sheets of blotting paper laid on my screens.

  10. #10
    Bob F.'s Avatar
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    I occasionally saw this with MGIV but it is more common with MG-WT. I now dry face-up for about an hour and place face-down when the emulsion has had a chance to dry a bit.

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