DI Drying problems

Discussion in 'DI Presses' started by Rick R, Jan 12, 2018.

  1. Rick R

    Rick R New Member

    Joined:
    Jan 2018
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    Location:
    USA
    We are currently using toyo king waterless inks on our presstech 34 DI and although they are running great, we are having some issues with drying, marking and scuffing. mostly on dull and matte coated stocks which I know can be tricky. I don't want to get in to having to constantly add dryers and such, but i really need to figure this out....we do have an infrared dryer and spray powder and still have been having issues.
    Looking for some suggestions
     
  2. mantman

    mantman Senior Member

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    Greece
    Your densities could be high also check with your prepress if the total area coverage of sheet go above 280%
     
  3. Rick R

    Rick R New Member

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    Location:
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    Thanks for the reply, I will look into the denstites
     
  4. Richard_Hardin

    Richard_Hardin Member

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    Location:
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    I agree with mantman. The ink densities are probably too high and the ink is over saturated. We like to keep our coverage at a maximum of 240% if we can achieve that. If we are printing a rich black we use the formula C=40 M=30 Y=30 K=100. I'm sure you've already checked this, but make sure your powder unit is actually spraying out powder. I've printed some pretty heavy coverage jobs, but never any offset with the powder and dryer. Also, make sure the dryer is set to a high enough temperature. I think we run it at about 96-98 degrees. Our press room averages at around 68-74 degrees and every 18 degree temperature increase in your dryer from your ambient room temperature will cut drying time in half. If you need any extra help, let me know.
     
  5. Ham1056

    Ham1056 Member

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    Location:
    NB,Canada
    Simple but sometimes missed, check the infrared light bulbs, they do burn out & can be less functional over time too
     
  6. augustov

    augustov Senior Member

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    Colombia
    Use cobalt in less proportion, this help to dry quickly..
     
  7. rchamness19

    rchamness19 Member

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    Oct 2015
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    Location:
    phila
    I sell T & K Toka and used to sell the toyo and toka dries better we also can modify to have more rub resistance
     

  8. augustov

    augustov Senior Member

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    Aug 2011
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    Location:
    Colombia
    Too expensive and not sell closed in any place... some things is necesary make rudimentary method that work great...
     
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