Loss of gloss after dry mount press

Discussion in 'B&W: Film, Paper, Chemistry' started by bwrules, May 9, 2011.

  1. bwrules

    bwrules Member

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    There is a substantial loss of gloss after putting FB paper through the dry mount press (does mat board have anything to do with this?). Is there any way to prevent it?

    Thank you.
     
  2. michael_r

    michael_r Subscriber

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    Do you mean you experience a loss of gloss when dry-mounting? Or are you talking about drying your wet prints in the press?
     
  3. bwrules

    bwrules Member

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    When using dry mount press to flatten FB prints after drying, not drying in dry mount press. Thanks.
     
  4. michael_r

    michael_r Subscriber

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    I guess it might depend on the paper, or if the press temperature is way too high, but I've never personally had that happen to me and I use archival mat board in the press so that can't be the problem. One thing you might want to try is steaming your prints after flattening. This can increase the surface sheen, although usually not dramatically. It is generally used to compensate for sheen differences between batches of paper, and it also helps blend spotting dye.

    What is the temperature of the press? How long do you leave them in there?
     
  5. bwrules

    bwrules Member

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    Temperature is set to 200, and 30 seconds. Thanks.
     
  6. Ian Grant

    Ian Grant Subscriber

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    It's just moisture affecting the surface, give the mounted print a really quick steam over a boiling kettle. Better still in futire dry the mount board well then the print in the press before dry mounting that's the professional way of mounting.

    Ian
     
  7. bwrules

    bwrules Member

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    Sorry if this is confusing, but I should point out that I am flattening prints, not dry mounting using a dry mount press. Thanks.
     
  8. Ian Grant

    Ian Grant Subscriber

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    OK, you need to flatten with a quick press to dry the print, may be 2 cycles between previously dried card before the longer flattening press,

    If the print still looses gloss just give quick steam, it'll be better than before the first press :smile:

    I've done this for 25 to 30 years with some prints, John Sexton's written about it in more recent years but it's a well known trick the steam remelts the surface gelatin supercoat reviving and usually giving a better gloss.

    Ian
     
  9. bwrules

    bwrules Member

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    Thanks Ian. I'll try it.
     
  10. Robert Hall

    Robert Hall Subscriber

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    What are you putting your prints to protect them while in the press? matte board? You should be using release paper or board. It's silicone impregnated paper that keeps it from sticking and keeps it clean.
     
  11. bwrules

    bwrules Member

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    Just two pieces of matte board.
     
  12. Robert Hall

    Robert Hall Subscriber

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    If you heat up the gelatin it will start to take on the texture of the surface you are pressing it against.

    Look for some release paper. It's not going to completely solve your problem, but it will help.

    How are you drying your prints? Face down on a fiberglass or plastic window screen works well to keep them from curling as well as squeegeeing the prints out of the rinse.

    Humidity in the air will have an effect on the curl as well.

    Take a look at this... http://www.freestylephoto.biz/928-Seal-Bienfang-Release-Paper-26-in.-x-5-yds.?sc=24100
     
  13. bwrules

    bwrules Member

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    Drying on a Premier dryer. It doesn't dry flat enough. I don't have window screens.
     
  14. patrickjames

    patrickjames Member

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    Anyone have any suggestions for a steamer? Would a clothes steamer do the job? Suggestions?

    I would like to get more gloss, but I really don't want to ferrotype. Too time consuming.
     
  15. bwrules

    bwrules Member

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    Won't steaming curl the print again though?
     
  16. jeroldharter

    jeroldharter Member

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    Mat board
    Release Paper
    Print
    Mat Board
     
  17. Tom Nutter

    Tom Nutter Member

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    here's a suggestion to try, but you might want to experiment first of course: You can wax your prints to get a sheen back on them (after flattening them) and also protect them somewhat.....I have used turtlewax, but there is probably something more appropriate.
     
  18. MattKing

    MattKing Subscriber

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    I use a kitchen kettle.

    Be careful, the steam is hot!
     
  19. bwrules

    bwrules Member

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    I took a second look at the prints, and it's the old prints that exhibit this problem, so may be it's more due to handling and not flattening.

    If I am going to be steaming prints, I guess if there will be too much condensate, the print will have to be dried and flattened again?
     
  20. michael_r

    michael_r Subscriber

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    It's a light steaming. Only a small amount of moisture. John Sexton even does it with prints that are already mounted.