White Horizontal Chaotic Strips-gaps (Bizhub C227)

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  • staraseko
    Junior Member
    • Mar 2024
    • 4

    White Horizontal Chaotic Strips-gaps (Bizhub C227)

    IMG_20240326_191111000.jpg

    Interrupted printing on an A3 sheet (most of it is unfused, so there is not much black there):
    IMG_20240326_191202000.jpg
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  • kingarthur
    Service Manager

    1,000+ Posts
    • Feb 2008
    • 1201

    #2
    Re: White Horizontal Chaotic Strips-gaps (Bizhub C227)

    it looks to me like you have dirty printheads, all of the colour ones need cleaning. the reason why the "black" has strips when printing in colour, is because it's using all the colours to make the black
    Tip for the day; Treat every problem as your dog would.....If you cant eat it or f*ck it....then p*ss on it & walk away...

    Comment

    • Gift
      Service Manager

      1,000+ Posts
      • Mar 2011
      • 2413

      #3
      Re: White Horizontal Chaotic Strips-gaps (Bizhub C227)

      Looks like HV fluctuations / issues - might be caused by worn out/defective consumables or bad contacts.
      It's not unusual that one issue can sort of backfire over multiple colors since some HV voltage generators provide multiple units.

      Comment

      • staraseko
        Junior Member
        • Mar 2024
        • 4

        #4
        Re: White Horizontal Chaotic Strips-gaps (Bizhub C227)

        Originally posted by kingarthur
        it looks to me like you have dirty printheads, all of the colour ones need cleaning. the reason why the "black" has strips when printing in colour, is because it's using all the colours to make the black
        Do you mean laser glass? Of course, it is first that I did: cleaned up all laser glass. But dirty laser makes white strips ALONG paper path, and we have ACROSS.

        Black uses all colors, INCLUDE BLACK toner. My black has gaps, in which I see yellow or magenta color, that's why black toner has his own gaps. (which are absent in B&W printing)
        And! Black colors are generally white in "general gaps" (which also are absent in B&W printring).
        Gaps are along ALL 4 colors (!)
        I can't understand it.

        Comment

        • staraseko
          Junior Member
          • Mar 2024
          • 4

          #5
          Re: White Horizontal Chaotic Strips-gaps (Bizhub C227)

          Originally posted by Gift
          Looks like HV fluctuations / issues - might be caused by worn out/defective consumables or bad contacts.
          It's not unusual that one issue can sort of backfire over multiple colors since some HV voltage generators provide multiple units.
          This is very similar to the truth. I've noticed that one bad contact in drum-unit of ONE color can affect ALL colors in unpredictable ways. It's because of HV fluctations.
          Firstly I will disassemble all drum-units to clean all contacts and write down result. And then will go to HV contacts. Thanks! It is good idea.

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