Canon IR Adv 8295. LINE OF TONER SPOTS. intermitant

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  • misserable old git
    Technician
    • Aug 2014
    • 19
    #1

    [CQ] Canon IR Adv 8295. LINE OF TONER SPOTS. intermitant

    Hi All.
    I have a IRadv8295 that is leaving a line of toner drops in a certain area of the page. The problem only occurs during long runs.
    Work done so far.....
    Polished Drum, New AP Kit.
    Machine is clean inside, no corresponding dropage as far as I can see.
    Please see attached example.
    Attached Files
    Tags: None
    • teckat
      Field Supervisor

      Site Contributor
      10,000+ Posts
      • Jan 2010
      • 16083
      #2
      Re: Canon IR Adv 8295. LINE OF TONER SPOTS. intermitant

      Originally posted by misserable old git
      Hi All.
      I have a IRadv8295 that is leaving a line of toner drops in a certain area of the page. The problem only occurs during long runs.
      Work done so far.....
      Polished Drum, New AP Kit.
      Machine is clean inside, no corresponding dropage as far as I can see.
      Please see attached example.
      00000000000000000000000000000000000000000000000000 00000/

      Canon USA

      Black random spots on copies.

      Solution :
      In this instance, the return spring fell off the actuator on the Pre-Transfer Dust Collection Roller. This caused excessive build up of toner in the Pre-Transfer corona assembly. Re-attaching the spring and vacuuming out the Pre-Transfer assembly resolved the spotting.





      Spots on copies and prints that are intermittent.

      The solution to this issue was to replace the cleaning blade retainer and cleaning blade together. It is believed that the cleaning blade retainer was needed in combination with a new cleaning blade.

      Check Technical Publications TP11 358b and TP12 180
      ================================================== ==================

      After a short period of time, toner accumulates on the top area of the developer assembly. Toner can contaminate the developer roller causing copy quality issues such as toner spots and banding.

      The shutter arms are located at the front and rear of the toner buffer assembly. These arms engage the developer and move the shutter so that toner can fall into the developer unit. If the arms or the arm return springs are missing, the shutter moves too far causing toner to drop on top of the developer assembly.
      Check the shutter arms and return springs.

      Shutter Arm FC9-5091-000
      Torsion Spring FU7-2715-000



      **Knowledge is time consuming, exhausting and costly for a trained Tech.**

        Comment

        • vigour
          Service Manager

          1,000+ Posts
          • Aug 2010
          • 1038
          #3
          Re: Canon IR Adv 8295. LINE OF TONER SPOTS. intermitant

          Another major cause of spots on this model is primary corona wires.

            Comment

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