Konica C220 Drum Issue

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  • joaopauloooo
    Technician
    • Jul 2016
    • 43
    #1

    Konica C220 Drum Issue

    I have this bizhub C220 printer that was working ok and then started showing some white marks on the Magenta Drum as you can see on Pic 1.
    I have changed this drum and the problem stopped for a while, but then came back as you can see on Pic 2.
    But the fact is that I took the older drum and put in another C220 printer and never got this issue on the other printer.
    Then I simply swapped this new drum with the older and the problem stopped for a while and came back again.

    So my question is, what could be causing this issue on the drum since this drum is working ok?

    This is an A4 printed with 50% Magenta.
    White bands are in main scan direction.

    Pic 1.jpg
    Pic1

    Pic 2.jpg
    Pic2
    Tags: c220, drum, issue, printer
    • copyman
      Owner / Technician

      Site Contributor
      2,500+ Posts
      • Sep 2005
      • 4217
      #2
      Re: Konica C220 Drum Issue

      Magenta developer unit. Sometimes when drums are way past their life they can short out and cause developer to dump. Keep in mind any drum past it's life can affect "any" other color. For instance I've had K drums past their life affect a different color developer unit.

        Comment

        • tsbservice
          Field tech

          Site Contributor
          5,000+ Posts
          • May 2007
          • 7635
          #3
          Re: Konica C220 Drum Issue

          Looks like drum pitch. Did you try to change developer units?
          A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
          Blessed are they who can laugh at themselves, for they shall never cease to be amused.

            Comment

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 22703
              #4
              Re: Konica C220 Drum Issue

              I agree with tbs. The drum interval is 95.7mm, which looks looks like what you have. I think that the magenta developer spacers are cracked, and the mag roller is arcing to the drum. I would replace the magenta drum and developing unit together, then stabilization and gradation. =^..^=
              If you'd like a serious answer to your request:
              1) demonstrate that you've read the manual
              2) demonstrate that you made some attempt to fix it.
              3) if you're going to ask about jams include the jam code.
              4) if you're going to ask about an error code include the error code.
              5) You are the person onsite. Only you can make observations.

              blackcat: Master Of The Obvious =^..^=

                Comment

                • joaopauloooo
                  Technician
                  • Jul 2016
                  • 43
                  #5
                  Re: Konica C220 Drum Issue

                  Changed the developer and works great!
                  Thanks

                    Comment

                    • copyman
                      Owner / Technician

                      Site Contributor
                      2,500+ Posts
                      • Sep 2005
                      • 4217
                      #6
                      Re: Konica C220 Drum Issue

                      Keep in mind the reason the developer unit went bad is one or more of the drums could be over their life limit and could dump developer out of new unit. If any drums over life replace or you could be replacing the magenta dev unit again!

                        Comment

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