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Laser Printer Toner Fuser Heats up Which Side of the Paper?

Discussion in 'Electronic Design' started by D from BC, Jun 4, 2007.

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  1. D from BC

    D from BC Guest

    Typically, which side of the paper is heated for fusing the toner in
    laser printers..?

    Is it the back of the paper or is it the front with the toner?
    Or both?
    D from BC
     
  2. Meat Plow

    Meat Plow Guest

    The side with the toner
     
  3. D from BC

    D from BC Guest

    Cool...
    Makes sense for the fastest heat transfer..

    It would probably take longer or take more heat to melt toner with
    heat applied on the backside of the paper.

    Thanks
    D from BC
     
  4. Rich Grise

    Rich Grise Guest

    Cool...
    Makes sense for the fastest heat transfer..

    It would probably take longer or take more heat to melt toner with
    heat applied on the backside of the paper.
    [/QUOTE]

    Since the toner is what actually fuses (melts), it's the only
    logical side to apply heat to.

    Cheers!
    Rich
     
  5. Rich Grise

    Rich Grise Guest

    However, if you already have the print, and want to transfer the
    toner to a PCB as resist, then, of course, you apply the hot iron
    to the back of the paper. :)

    Cheers!
    Rich
     
  6. On the Canon CLBP460/HP4500 series, both sides are heated. You don't
    just want the toner to melt, you want it to run into the paper.

    With heavier materials, such as card or transparencies, the transport
    slows down so that the medium spends longer in contact with the fuser
    rollers and longer in the cooling channel on the way out.

    You would have a job designing a roller-type fuser with one hot roller
    and one cold one; but there may be other types of fuser, using radiant
    heat, which only heat one side of the paper.
     
  7. Jasen

    Jasen Guest

    Seeing as you can print both sides it's probably the top.

    But that does raise a point the heaters in a laser printer may not be
    able to get the copper sheet hot enough.

    pre-heating may help, may damage the drum, I'm not prepared to risk it
    on the work printer.

    Bye.
    Jasen
     
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