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  1. #11
    Service Manager 1,000+ Posts
    Help. Konica Minolta Bizhub C759 double/ghost prints on 11x17 only.


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    Re: Help. Konica Minolta Bizhub C759 double/ghost prints on 11x17 only.

    Quote Originally Posted by man in havana View Post
    what thickness paper are you using and what are tray settings
    I have seen this happen on older series with thick paper only.

  2. #12
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    Re: Help. Konica Minolta Bizhub C759 double/ghost prints on 11x17 only.

    Does someone have a Konica Minolta Bizhub C759 Service Manual? Thank you.

  3. #13
    Field Supervisor 500+ Posts
    Help. Konica Minolta Bizhub C759 double/ghost prints on 11x17 only.


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    Re: Help. Konica Minolta Bizhub C759 double/ghost prints on 11x17 only.

    I don't think anyone mentioned this, but what kind of TONER are you using? OEM or Generic (like Katun garbage)? I know you're only seeing the problem on 11x17, but its possible its not showing up until the transfer belt has rotated longer... KMs rarely have image quality problems, especially with such a low mileage machine. And I'm with one of the other posts that asked why you replaced so many IUs if the machine only has 80K or so?
    OC

  4. #14
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    Re: Help. Konica Minolta Bizhub C759 double/ghost prints on 11x17 only.

    Quote Originally Posted by Oystercopy View Post
    I don't think anyone mentioned this, but what kind of TONER are you using? OEM or Generic (like Katun garbage)? I know you're only seeing the problem on 11x17, but its possible its not showing up until the transfer belt has rotated longer... KMs rarely have image quality problems, especially with such a low mileage machine. And I'm with one of the other posts that asked why you replaced so many IUs if the machine only has 80K or so?
    OC

    We are using OEM. Our Techs replaced the IUs to check if the problem will be fixed.
    Yesterday, our Techs tried to install a new ITB but still same problem.

  5. #15
    Field Supervisor 500+ Posts Woxner's Avatar
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    Re: Help. Konica Minolta Bizhub C759 double/ghost prints on 11x17 only.

    go into service mode and see what the idc readings are. this just looks like color alignment problem. clean the sensors then do int. and reset then gradation.

  6. #16
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    Re: Help. Konica Minolta Bizhub C759 double/ghost prints on 11x17 only.

    Quote Originally Posted by RUSORIZO View Post
    Hello Everyone,

    We have a Konica Minolta Bizhub C759 and having a problems with the print outs, with red/magenta shadows double/ghost prints. The problems only appears when we print on a 11x17" size paper but for a 8x11" the prints are good. You can print one at a time and they will all look good. But print like 10 or more and the first few will look good and then the rest will start to double/ghost. Please see below for sample prints:

    Attachment 45343 Attachment 45342


    The KM Bizhub C759: 2 years old
    Total Counter: 86,730
    The fusing unit is new
    the 3 imaging units and drum are new CMYK

    Did perform the Image Stabilization Only, Image + Stabilization, Print Skew Reset, and Color Registration Adjust but to no avail.

    I appreciate the help.
    Hi,
    I had a similar problem with the C458 e, I replaced the print head and the problem was solved.

  7. #17
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    Re: Help. Konica Minolta Bizhub C759 double/ghost prints on 11x17 only.

    Does anyone have any solution for this?
    I replace almost all part of C759 machine but still confuse what is the reason for this.
    MFP board, Transfer belt, idc, supply board...

  8. #18
    Technician
    Help. Konica Minolta Bizhub C759 double/ghost prints on 11x17 only.


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    Re: Help. Konica Minolta Bizhub C759 double/ghost prints on 11x17 only.

    Are your guys trained/experienced on the Bizhubs?
    1. Remove the Transfer Belt Unit and clean the two color registration sensors properly.
    2. Make sure to use only OEM Toner!

  9. #19
    Service Manager 10,000+ Posts
    Help. Konica Minolta Bizhub C759 double/ghost prints on 11x17 only.

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    Re: Help. Konica Minolta Bizhub C759 double/ghost prints on 11x17 only.

    Quote Originally Posted by RUSORIZO View Post
    Does someone have a Konica Minolta Bizhub C759 Service Manual? Thank you.
    https://www.copytechnet.com/forums/s...nual-requests/ ALL manual requests are to be placed in that forum per forum rules.

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