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  1. #1
    Senior Tech 100+ Posts
    Bzzhub c452 baclk IU or Transfer belt?

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    Bzzhub c452 baclk IU or Transfer belt?

    most of the time get this smudge stain on top right corner black prints only and mostly on First Print or copy?

    is it K IU or transferbelt? the colors come out fine


    79141F14.jpg

  2. #2
    Gimp 500+ Posts JSC's Avatar
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    Re: Bzzhub c452 baclk IU or Transfer belt?

    Quote Originally Posted by konica7022 View Post
    most of the time get this smudge stain on top right corner black prints only and mostly on First Print or copy?

    is it K IU or transferbelt? the colors come out fine


    79141F14.jpg
    Sounds like iU. Try and post an image of the issue, can't see on the one you have posted.
    The gene pool could use a little chlorine.

  3. #3
    Senior Tech 100+ Posts
    Bzzhub c452 baclk IU or Transfer belt?

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    Re: Bzzhub c452 baclk IU or Transfer belt?

    Image enhanced and contrast increased for better view

    defect is on the upper right side of the paperCopy of 79141F14.jpg

  4. #4
    Service Manager 1,000+ Posts femaster's Avatar
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    Re: Bzzhub c452 baclk IU or Transfer belt?

    Still a little hard to see on my screen, but with the enhanced image, it looks like it goes across the entire top of the paper. Based on that observation, it doesn't look like the streaking defect goes from the edge of the paper to the other edge of paper, it looks like it cuts off within the "image" area of the page, and if that is the case, I'd look at the image unit first. If it were from edge to edge, then I might start with removing and cleaning the transfer belt cleaning unit.
    A Ricoh Service Tech for 7 year. A Konica Minolta Service Tech for 7 years. Now, KM service manager for 3 years.
    My Ricoh knowledge is slowly dwindling away at this point. Many things have been lost to time...

  5. #5
    RTFM!! 5,000+ Posts allan's Avatar
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    Re: Bzzhub c452 baclk IU or Transfer belt?

    Quote Originally Posted by femaster View Post
    Still a little hard to see on my screen, but with the enhanced image, it looks like it goes across the entire top of the paper. Based on that observation, it doesn't look like the streaking defect goes from the edge of the paper to the other edge of paper, it looks like it cuts off within the "image" area of the page, and if that is the case, I'd look at the image unit first. If it were from edge to edge, then I might start with removing and cleaning the transfer belt cleaning unit.

    How does that work?

  6. #6
    RTFM!! 5,000+ Posts allan's Avatar
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    Re: Bzzhub c452 baclk IU or Transfer belt?

    Quote Originally Posted by konica7022 View Post
    most of the time get this smudge stain on top right corner black prints only and mostly on First Print or copy?

    is it K IU or transferbelt? the colors come out fine
    Its faint but looks like cleaning blade failure.
    Print half-tones and have a look if the black appears on the CMY prints if it does its the black drum.
    A C452 does not use an IU for K, its a DR and a DV unit

  7. #7
    Service Manager 1,000+ Posts femaster's Avatar
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    Re: Bzzhub c452 baclk IU or Transfer belt?

    Quote Originally Posted by allan View Post
    Its faint but looks like cleaning blade failure.
    Print half-tones and have a look if the black appears on the CMY prints if it does its the black drum.
    A C452 does not use an IU for K, its a DR and a DV unit
    Even though I'm guessing you are referencing the original posters words, I too made the same mistake. You are correct; I'm still trying to get a handle on all these models myself, and convert my terminology from Ricoh to KM... I'm getting there... lol
    A Ricoh Service Tech for 7 year. A Konica Minolta Service Tech for 7 years. Now, KM service manager for 3 years.
    My Ricoh knowledge is slowly dwindling away at this point. Many things have been lost to time...

  8. #8
    Senior Tech 100+ Posts hotfuser's Avatar
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    Re: Bzzhub c452 baclk IU or Transfer belt?

    Quote Originally Posted by konica7022 View Post
    Image enhanced and contrast increased for better view

    defect is on the upper right side of the paperCopy of 79141F14.jpg
    usually it is the ITB ecspecially if it is only on the first copies.

    it is the mylar below the cleaning blade assy that gets damaged.

  9. #9
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    Re: Bzzhub c452 baclk IU or Transfer belt?

    Try adjusting the Transfer Belt-Cleaning Bias first. positive +5

  10. #10
    Step aside, noob 1,000+ Posts EarthKmTech's Avatar
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    Re: Bzzhub c452 baclk IU or Transfer belt?

    I just install a new transfer belt when I see that. Its the belt cleaning section.

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