2-part NCR on a 7105

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  • ukwildcats43

    #1

    2-part NCR on a 7105

    First of all, I am not a technician, but work in a healthcare print shop environment.


    Our shop has 2 7105's as well as a C5180 color rig.


    We do have service techs that seem to be thorough, but do not always have answers to questions that are less technical, such as recommended paper types.

    We tend to run a lot of 60-90# card stock as well as at least 60k+ clicks on 2 and 3-part NCR each month.

    The NCR tends to jam a little more than our standard 20# white, but it is within acceptable limits.

    Is there a type of 2-part NCR (white/canary) that is historically reliable, and if so, what is it?

    We ran Nekoosa 2-part for almost a year and it ran ok, but started having issues with the toner not properly fusing on the white sheet at the very same time on both machines.

    We then switched to Appleton 2-part for the past 8 months, which feels a bit thicker and jams less, but recently, for a couple of weeks now, again on both machines, it tends to "curl" on the output tray, causing us major headaches and to have to babysit the machine on larger runs.

    This is 1-sided 2-part NCR. We typically run from drawers 1 & 2, and paper deck if we have to order "straight" ncr.

    What causes the curling? We had the fuser unit rebuilt on 1 of our 7105's to see if that would remedy jamming, but since then, it too has been curling the paper.

    The weather has been fairly stable here, and we notice it when it's 65 F outside as well as when it's 15 F, as our techs tried to explain temperature as the issue.

    Sorry if I'm unclear, just ask if you want to know more specifics.
  • mjarbar

    #2
    Hello,

    For the paper stock we use Xerox 2-part NCR (yes i know it the dreaded big X but it works)

    The curling problem you are getting is due to the paper being damp.

    Basically what happens is the the damp paper goes through the machine and gets snap dried when in the fuser. As the top roller is the hot one, one side of the paper gets hotter and drier than the other side and it curls up. As a quick rule of thumb the damper the paper the worse the curl is.

    When you are not using the paper it should be stored in its wrapping near to a radiator, if that is not possible you can get the packs of silica gel like you get in electrical appliancie to keep the worst of the damp at bay.

    All the best.

    Comment

    • Kopyrtek
      Copier Psychologist

      250+ Posts
      • Jan 2007
      • 407

      #3
      Try the Mead-XL carbonless.It is more expensive than the Apppleton but i have found it runs better than most.

      Comment

      • jimhott

        #4
        In reply to the Mead XL- Mead is now owned by Glatfelter. Thier digital carbonless is Xcelerator Plus. You can get it from xpedx. Works well.

        Comment

        • mrfixit51
          Lead Service Technician

          1,000+ Posts
          • Oct 2008
          • 1975

          #5
          Mjarbar has given an excellent explanation of how curl occurs in all kinds of paper.

          The one thing has not been offered yet, is that I believe NCR paper is not officially supported in any Canon copier. I know that in Kodak and IBM copiers it was not supported either. NCR paper by the nature of the waxy encapsulation applied to it that makes the "magic" happen, plays havoc with feed rubber and fuser rollers in copiers. If Canon TAC is consulted about machine issues arising from the use of this paper, you get the caveat that it is not supported.

          NCR paper is best run in offset press situations, because of there being no fusing heat problems. Customers are free to run anything they want to in their machines, but sometimes we are limited in what we can do to help you with your problems.
          "Once a King, always a King, but once a Knight is enough!"

          Comment

          • jimhott

            #6
            Check this link for the Glatfelter web site that has the Xcelerator Plus digital product listed.

            Xcelerator Digital Carbonless Papers from Glatfelter

            Comment

            • mtech
              Technician

              250+ Posts
              • Mar 2007
              • 307

              #7
              ncr paper is always trouble. No matter how you slice it. It just always seems to have issues!

              Comment

              • mjarbar

                #8
                Originally posted by mrfixit51
                Mjarbar has given an excellent explanation of how curl occurs in all kinds of paper.

                The one thing has not been offered yet, is that I believe NCR paper is not officially supported in any Canon copier. I know that in Kodak and IBM copiers it was not supported either. NCR paper by the nature of the waxy encapsulation applied to it that makes the "magic" happen, plays havoc with feed rubber and fuser rollers in copiers. If Canon TAC is consulted about machine issues arising from the use of this paper, you get the caveat that it is not supported.

                NCR paper is best run in offset press situations, because of there being no fusing heat problems. Customers are free to run anything they want to in their machines, but sometimes we are limited in what we can do to help you with your problems.
                Your absolutlly correct about Canon and the "It's not supported" line. These days what with them laying off a lot of staff in the UK it has become a stock line for them on 90% of the issues that come up.

                As for the rollers etc. the only thing we can do as techs and also the customer to some extent is to keep the rollers clean as best as possible. Thanks to good old WD40 you can get the rollers most of the time to go well past the 100% usage mark and replace where req.

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