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Thread: Bizhub 350 BW

  1. #1
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    Bizhub 350 BW

    Hello All

    Replace drum/compete developer and machine makes great copier. However, when we make duplex copy. The copies have a lot of dots on the right side of the page on the direction of paper ( both sides) . Single sided copies that follow the duplex will have some dots on the back till it cleans up. What is causing this?

  2. #2
    Field Supervisor 500+ Posts Woxner's Avatar
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    Re: Bizhub 350 BW

    did you calbrate the dev? ands did you replace transfer roller. if not clear the drum and dev and run f8

  3. #3
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    Re: Bizhub 350 BW

    yes replace the entire developer unit with a new roller. old one leaking from the side and worn out. yes did the calibration too. It prints perfect on single sided. Only have lots of dots when printing double sided

  4. #4
    Service Manager 2,500+ Posts
    Bizhub 350 BW


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    Re: Bizhub 350 BW

    transfer roller?

  5. #5
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    Re: Bizhub 350 BW

    the roller on the door? no did not replace that one. yes it was dirty. clean it as much as I can

  6. #6
    Aging Tech 10,000+ Posts
    Bizhub 350 BW

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    Re: Bizhub 350 BW

    Quote Originally Posted by wkwar View Post
    the roller on the door? no did not replace that one. yes it was dirty. clean it as much as I can
    The transfer roller needs to be replaced everything time the drum gets replaced.

  7. #7
    Service Manager 2,500+ Posts
    Bizhub 350 BW


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    Re: Bizhub 350 BW

    According to maintenance schedule in service manual the Trans roll is replaced at 150k. Drums are rated at 100K for the 350. First I doubt you can get 100K out of a drum unit (same identical unit as the Biz 200/250 with a few tabs so it don't fit), and second I've rarely replaced the transfer roller on this model, only a few left in service but at one time had many machines with well over 200k and never replace the trans roll.

  8. #8
    Aging Tech 10,000+ Posts
    Bizhub 350 BW

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    Re: Bizhub 350 BW

    Quote Originally Posted by copyman View Post
    According to maintenance schedule in service manual the Trans roll is replaced at 150k. Drums are rated at 100K for the 350. First I doubt you can get 100K out of a drum unit (same identical unit as the Biz 200/250 with a few tabs so it don't fit), and second I've rarely replaced the transfer roller on this model, only a few left in service but at one time had many machines with well over 200k and never replace the trans roll.
    Since changing back to OEM toner we now regularly get 150% to 200% out of a drum, which is the same unit between all three models BH200/222, BH250/282 and BH350/362 (no tabs). We use the BH423 transfer roller on the BH350 series, it has a wider edge roller which seems to inflict less damage to the drum. And transfer roller gets replaced at every drum/dev change.

  9. #9
    Service Manager 2,500+ Posts
    Bizhub 350 BW


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    Re: Bizhub 350 BW

    I must be very lucky because I might have replaced 2 transfer rollers in all the years servicing that footprint, going back to the Di-200.

    Perhaps not using OEM drums is why I never could get 100k pages out of a drum. Average is around 60k with aftermarket toner & drums.

    Like I posted only have a few of these models left so not much more to discuss.

  10. #10
    Senior Tech 250+ Posts
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    Re: Bizhub 350 BW

    250/350 and also 423 series can get 200k and even 250k out of a drum.

    Regarding the problem....there is a fan behind registration roller. Clean it and area area around it. Also clean duplex unit.

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