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  1. #11
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    Re: why does my color look like this? how can i correct this please?

    Quote Originally Posted by blackcat4866 View Post
    It looks like primary or secondary transfer to me, which includes paper as a possibility. How heavy is the media? =^..^=
    Which part can be?
    As i installed new 2nd transfer unit
    I swapped with another bizhub PRESS c8000 intermediate full unit
    Still the same

    Paper is ok 105 grs plain bond
    Same print on same paper but another BH C8000 looks great

    20171111_113231.jpg

    Same test pattern, same paper, different machine
    Left, C8000 with this trouble
    Right, C8000, fine

    Look at differences, on the left it is very noisy, and many non coulor whiteish noise,
    On right, only black lacks density, but all others just fine

    Thanks for your help in advance

  2. #12
    Master Of The Obvious 10,000+ Posts
    why does my color look like this? how can i correct this please?

    blackcat4866's Avatar
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    Re: why does my color look like this? how can i correct this please?

    In my humble opinion both left and right look like crap. What media setting are you using? =^..^=
    If you'd like a serious answer to your request:
    1) demonstrate that you've read the manual
    2) demonstrate that you made some attempt to fix it.
    3) if you're going to ask about jams include the jam code.
    4) if you're going to ask about an error code include the error code.
    5) You are the person onsite. Only you can make observations.

    blackcat: Master Of The Obvious =^..^=

  3. #13
    Trusted Tech 50+ Posts Quatro's Avatar
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    Re: why does my color look like this? how can i correct this please?

    Quote Originally Posted by stuckmx View Post
    Which part can be?
    As i installed new 2nd transfer unit
    I swapped with another bizhub PRESS c8000 intermediate full unit
    Still the same

    Paper is ok 105 grs plain bond
    Same print on same paper but another BH C8000 looks great

    20171111_113231.jpg

    Same test pattern, same paper, different machine
    Left, C8000 with this trouble
    Right, C8000, fine

    Look at differences, on the left it is very noisy, and many non coulor whiteish noise,
    On right, only black lacks density, but all others just fine

    Thanks for your help in advance

    Hi,

    Please print on separate the CMYK, I think you have the white spot issue.
    And try to adjust the 2nd transfer output adjustment.
    Take note you will adjust this only for the type of the paper that gives you this issue.

    Good luck

  4. #14
    Service Manager 5,000+ Posts
    why does my color look like this? how can i correct this please?

    copier tech's Avatar
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    Re: why does my color look like this? how can i correct this please?

    Any poster with a print quality issue using non OEM toner needs no further response
    Let us eat, drink, and be merry, because tomorrow we may die!

    For all your firmware & service manual needs please visit us at:

    www.copierfirmware.co.uk - www.printerfirmware.co.uk




  5. #15
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    Re: why does my color look like this? how can i correct this please?

    @Quatro how to print like that? In Fiery? We always manage CMYK printing only
    I changed 2nd transfer output it just reduced it, but not vanish at all like comparing with other c8000s
    Any paper does it.. coated-gl, plain etc


    @copier tech
    Using original OEM toner. Only original parts from KM

    @blackcat4866
    It looks great irl. Yet still the problem is why looks different

  6. #16
    Trusted Tech 50+ Posts Quatro's Avatar
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    Re: why does my color look like this? how can i correct this please?

    Quote Originally Posted by stuckmx View Post
    @Quatro how to print like that? In Fiery? We always manage CMYK printing only
    I changed 2nd transfer output it just reduced it, but not vanish at all like comparing with other c8000s
    Any paper does it.. coated-gl, plain etc


    @copier tech
    Using original OEM toner. Only original parts from KM

    @blackcat4866
    It looks great irl. Yet still the problem is why looks different
    Have you solved this issue?
    Why you don't try to adjust also the fusing temp int to negative, not only the 2nd transfer output just give a shot............

  7. #17
    Senior Tech 250+ Posts
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    Re: why does my color look like this? how can i correct this please?

    Did I miss the answer to the question what age are your image units/developer? Did you say Y is good? That tells me it's a toner density/developer unit issue. IF Y is good, why jack with transfer & temp settings globally affecting all?

  8. #18
    Copier & Repair LLC
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    Re: why does my color look like this? how can i correct this please?

    hi everyone

  9. #19
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    Re: why does my color look like this? how can i correct this please?

    @Quatro
    i tried adjusting fusing temps too, just a bit reduced, but problem still there


    @Don N.
    Developer Unit as itself, i dont know
    But, developer (https://i.ebayimg.com/images/g/5ZEAA...2BC/s-l500.jpg) each color, were replaced two months ago, and only been used in 22k prints

  10. #20
    Senior Tech 250+ Posts
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    Re: why does my color look like this? how can i correct this please?

    Hi
    What are the environmental conditions.
    We have observed if Humidity is low it affects transfer and white spots are seen as in your case. We called it 'Cloudy Effect'
    Moderate humidity around 50-70 is good.
    If humidity is low just for trial spray water around machine to increase humidity, wait for few minutes and try again.
    Hope this helps

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