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  1. #1
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    bizhub C360 spots in color printing

    Good evening,
    I have a quality problem with color printing with my bizhub C360. There are sometimes light spots in colored areas. In the test print (see attachment) it looks partly also like spots in the color cyan.
    The graduation patterns, on the other hand, are printed correctly, there are no unusual spots there.
    Does anyone have an idea how I can adjust the colors reasonably? I have already performed the graduation adjustment function several times.
    Recently, drums, developer, toner were all replaced with original parts.


    Best regards
    Björn
    Attached Files Attached Files

  2. #2
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: bizhub C360 spots in color printing

    Where are samples of gradation or halftone of other colors?
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

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  3. #3
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    Re: bizhub C360 spots in color printing

    Quote Originally Posted by tsbservice View Post
    Where are samples of gradation or halftone of other colors?
    Now I made a new scan of all test prints!
    https://itc-cordes.de/wp-content/upl...3101320270.pdf

    Best regards

  4. #4
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: bizhub C360 spots in color printing

    Clean IDC sensors x2 then do stabilization and check.
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

    Blessed are they who can laugh at themselves, for they shall never cease to be amused.

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  5. #5
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    Re: bizhub C360 spots in color printing

    Thanks for your help.
    I have cleaned both sensors and performed the stabilization. Unfortunately, the result is still the same as before:
    https://itc-cordes.de/wp-content/upl...3101321330.pdf

  6. #6
    Service Manager 5,000+ Posts tsbservice's Avatar
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    Re: bizhub C360 spots in color printing

    I would carefully play with transfer voltages in service mode. Read the manual before doing it.
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

    Blessed are they who can laugh at themselves, for they shall never cease to be amused.

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  7. #7
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    Re: bizhub C360 spots in color printing

    I am excited, the setting "2nd Transfer Adjust -> Plain - Color: 4" solved the problem!
    Thanks for the tip.
    Do you know which component this setting affects? Should I think about replacing a component?

  8. #8
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    Re: bizhub C360 spots in color printing

    Quote Originally Posted by computerfan3 View Post
    I am excited, the setting "2nd Transfer Adjust -> Plain - Color: 4" solved the problem!
    Thanks for the tip.
    Do you know which component this setting affects? Should I think about replacing a component?
    This usually is due to humidity or lack of either in the paper or most likely the environment. component involved is 2nd transfer roller.

  9. #9
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    Re: bizhub C360 spots in color printing

    Thank you for the great advice!
    I have now set the setting to +2 and a perfect result.

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