Help Please, Problem with Streak in Image

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  • Juxta5
    Technician

    Site Contributor
    50+ Posts
    • Jul 2008
    • 65
    #1

    Help Please, Problem with Streak in Image

    I am getting a streak on my magenta prints. All other colors are okay.

    It is not the transfer belt, it is new. This should be easy, but something is eluding me... could it be a blade somewhere?

    I've checked the drum and cannot see anything that would cause this problem. Below is a pic of what a 100% magenta tabloid page would print out as.



    Suggestions are greatly appreciated!
    Tags: developer unit, help please, image, jpg, refresh, streak
    • copytechman
      Senior Tech

      Site Contributor
      500+ Posts
      • Nov 2008
      • 926
      #2
      What model of machine is this? Cleaned the LSU lens' if equipped or led lens?
      Regards.
      A.

      Edit: Also have actually seen literally a hair obstructing the lens/leds light path causing this as well.
      Last edited by copytechman; 12-02-2008, 01:07 AM.

        Comment

        • totoro
          Senior Tech

          Site Contributor
          500+ Posts
          • Apr 2008
          • 568
          #3
          I agree with the previous post. I have had a hair in the laser path that caused this on a C6500.
          Totoro

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            • Techead42
              Service Manager
              • Mar 2008
              • 32
              #4
              There's a troubleshooting guide that points to several possible causes of this definite void line; the LSU slit glass is definitely a good place to start, as foreign matter on this glass can cause the laser to 'lock' on the matter and reproduce as a void area...you might also want to look at the developer unit, specifically the mag roller...hold the DV unit in your hand and manually turn the mag roller..scan the roller as you do so, and check for a break in the flow of developer. There may be clumped up developer 'hiding' behind the doctor blade, causing the developer to back up behind and cause this void area.

              You might also want to try running belt refresh.

              Is this the only void line, or are there others? Does the void line change when running density check?

                Comment

                • Juxta5
                  Technician

                  Site Contributor
                  50+ Posts
                  • Jul 2008
                  • 65
                  #5
                  Originally posted by copytechman
                  What model of machine is this? Cleaned the LSU lens' if equipped or led lens?
                  Regards.
                  A.

                  Edit: Also have actually seen literally a hair obstructing the lens/leds light path causing this as well.
                  Oh sorry. ColorForce 8050.

                    Comment

                    • Juxta5
                      Technician

                      Site Contributor
                      50+ Posts
                      • Jul 2008
                      • 65
                      #6
                      "There may be clumped up developer 'hiding' behind the doctor blade, causing the developer to back up behind and cause this void area."


                      Thank you for your responses, yes there was a clump of developer. Problem fixed and the output looks fantastic! Thank you again.

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