printing white thermography

Discussion in '1-Color and 2-Color Offset Presses' started by invite, Aug 15, 2010.

  1. invite

    invite New Member

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    i have a customer who needs white thermography on a dark card, which until now i have never done, and dont seem to get enough coverage on it - any suggestions would be greatly appreciated - didnt think it was going to be so difficult. thanks!
     
  2. Data

    Data Senior Member

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    I take it you can see the black card through the print? Are you using an opaque white ink?
     
  3. invite

    invite New Member

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    yes opaque white rubber base - any suggestions?
     
  4. ziggy33

    ziggy33 Senior Member

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    try using a non rubber base ink. I have seen that work but then again i don't run thermograph at my shop just a suggestion
     
  5. Data

    Data Senior Member

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    I never got on with rubber based inks. Try a tinting medium or a slightly reduced opaque white.
     
  6. StewartMultiTasking

    StewartMultiTasking New Member

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    When I was younger we did tons of thermo work on wedding stationery etc. When doing colours other than white or metallic you use a neutral (cream looking powder) for metallics and white you need to get Gold or silver or in your case a white powder, tinting medium will make it worse.
     
  7. printerdan

    printerdan Member

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    Done it maybe twice in 5 years.
    Make sure you get every trace of that white powder out of the device afterwards!
    I think we typically put as much ink down as possible, catch the sheets out of the press (delivery), pour on the powder (via a sheet of folded chipboard) than hand toss it onto the belt.
    PITA
     
  8. OkiTech

    OkiTech Senior Member

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    Print it with minimal ink without thermography and re-run max ink with thermography for the second time. If your reg is good should be ok. It's been a while since I've done thermography but I did all sort of tricks back in the days.
     
  9. turbotom1052

    turbotom1052 Senior Member

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    double hit of the opaque white is your friend when looking for max opacity!!!
     

  10. mantman

    mantman Senior Member

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    Try this - print white as max density you can, then print same plate with transparent ink and what printerDan suggests
     
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