Black print smudging before fusing - pics attached

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • weskes
    Technician
    • Oct 2015
    • 24

    Black print smudging before fusing - pics attached

    Hey guys having a problem I've never seen before I'm having an issue on my c6500 where the black seems to be smudging or looks burry, no other colors are doing this, I've swapped developer units and reseated the drum unit... Any ideas would be greatly appreciated as to what might be causing this. Pics attached, one showing the full 12x18 sheet and where the smudging is occuring, one close up of a bad print and for comparison one copy of a good print
    Attached Files
    Last edited by weskes; 10-30-2017, 06:31 PM.
  • habik
    Service Manager
    Site Contributor
    1,000+ Posts
    • Apr 2010
    • 2015

    #2
    Re: Black print smudging before fusing - pics attached

    Originally posted by weskes
    Hey guys having a problem I've never seen before I'm having an issue on my c6500 where the black seems to be smudging or looks burry, no other colors are doing this, I've swapped developer units and reseated the drum unit... Any ideas would be greatly appreciated as to what might be causing this. Pics attached
    Don't do 6500 but there's no pics attached.



    Sent from my Mi A1 using Tapatalk
    .OK Google! ... will I need Berrocca this morning?
    Firmwares HERE

    Comment

    • Copier Addict
      Aging Tech
      Site Contributor
      10,000+ Posts
      • Jul 2013
      • 12494

      #3
      Re: Black print smudging before fusing - pics attached

      Originally posted by habik
      Don't do 6500 but there's no pics attached.



      Sent from my Mi A1 using Tapatalk
      Lol. Maybe they are attached to the C6500.

      Comment

      • weskes
        Technician
        • Oct 2015
        • 24

        #4
        Re: Black print smudging before fusing - pics attached

        Originally posted by habik
        Don't do 6500 but there's no pics attached.



        Sent from my Mi A1 using Tapatalk
        for some reason it wasn't allowing my to upload the pics from my phone, had to open them then resave on the laptop, but pics are posted now

        Comment

        • habik
          Service Manager
          Site Contributor
          1,000+ Posts
          • Apr 2010
          • 2015

          #5
          Re: Black print smudging before fusing - pics attached

          Is it repetitive per rotation of drum or Dev or transfer roller length?
          I don't have the service manual on hand to check.

          What kind of paper is that? Plain?

          Sent from my Mi A1 using Tapatalk
          .OK Google! ... will I need Berrocca this morning?
          Firmwares HERE

          Comment

          • Phil B.
            Field Supervisor
            10,000+ Posts
            • Jul 2016
            • 22810

            #6
            Re: Black print smudging before fusing - pics attached

            Originally posted by habik
            Don't do 6500 but there's no pics attached.
            Sent from my Mi A1 using Tapatalk
            maybe your phone isn't showing them... but the thumbnails are there...

            it looks like the paper has a 'shake' in it... check transport

            Comment

            • weskes
              Technician
              • Oct 2015
              • 24

              #7
              Re: Black print smudging before fusing - pics attached

              Originally posted by habik
              Is it repetitive per rotation of drum or Dev or transfer roller length?
              I don't have the service manual on hand to check.

              What kind of paper is that? Plain?

              Sent from my Mi A1 using Tapatalk
              It doesn't seem repetitive, it's I'm the same places on every sheet going with the paper feed direction, that is hammermill 136gsm plain cover

              Comment

              • weskes
                Technician
                • Oct 2015
                • 24

                #8
                Re: Black print smudging before fusing - pics attached

                Originally posted by Phil B.
                maybe your phone isn't showing them... but the thumbnails are there...

                it looks like the paper has a 'shake' in it... check transport
                The thing about it is it seems like it's only on the black, when printing the other colors look good and stay where that are in comparison to the black, just for certainty I'll print this same card dyed 100% cyan then 100% magenta and finally 100 yellow first thing in the am

                Comment

                • mircea
                  Technician
                  50+ Posts
                  • Feb 2014
                  • 66

                  #9
                  Re: Black print smudging before fusing - pics attached

                  Originally posted by weskes
                  The thing about it is it seems like it's only on the black, when printing the other colors look good and stay where that are in comparison to the black, just for certainty I'll print this same card dyed 100% cyan then 100% magenta and finally 100 yellow first thing in the am
                  Check the transfer roller b4 the fusing unit and try to take it out and clean it... There is a small motor that should lift that roller and sometimes one of the motor teeths gets broken and it jumps one step... you can start there.. if not..just check the transfer belt for any dmg..and also the rollers inside the transfer belt unit.
                  Best of luck

                  Comment

                  • weskes
                    Technician
                    • Oct 2015
                    • 24

                    #10
                    Re: Black print smudging before fusing - pics attached

                    Originally posted by mircea
                    Check the transfer roller b4 the fusing unit and try to take it out and clean it... There is a small motor that should lift that roller and sometimes one of the motor teeths gets broken and it jumps one step... you can start there.. if not..just check the transfer belt for any dmg..and also the rollers inside the transfer belt unit.
                    Best of luck
                    Still no luck with this machine, Not thinking its the transfer roller (which checked out just fine) since that would smudge all the way across the sheet left to right, not just an inch section at 2 different points that go the same way as the feed direction... any other guesses would be greatly appreciated guys

                    Comment

                    Working...