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  1. #1
    Senior Tech 250+ Posts
    MP-C3002 toner build-up at fuser entry


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    MP-C3002 toner build-up at fuser entry

    Hello people

    as per the attached image, i have toner building up on the fixed fuser entry guide which is causing smudging on prints - wipe it off and print quality returns, but it doesn't last long

    i left a rag with the client, they wipe it as required

    it seems to me the paper upon leaving the transfer belt/roller doesn't quite touch the guide, but toner builds up on it then smudges - the transfer roller has some sort of grid and i'm wondering if a separation voltage has died

    it started happening suddenly, no other faults and low print count (C-118k M-38k)

    any ideas?

    thanks in advance
    toner build-up.pdf

  2. #2
    Retired 10,000+ Posts
    MP-C3002 toner build-up at fuser entry

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    Re: MP-C3002 toner build-up at fuser entry

    You have to correct the cause of the toner getting on the fusing entry guide. In cleaning the entry guide you are treating a symptom not the problem. Ricoh machines are notorious for toner scattering. It is made worse by low print volume, toner concentration in the developers and use of after market supplies. Thoroughly clean all scattered toner. If you have been using after market toner, throw it out and replace the developer. Use only Genuine Ricoh. Finally make the changes in the attached document.
    Attached Files Attached Files

  3. #3
    Field Supervisor 500+ Posts Zeldaman's Avatar
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    Re: MP-C3002 toner build-up at fuser entry

    Hi there!
    Also make a check if the fuser-motor is OK. Thereīs a bulletin about this problem, and they say if the problem occurs to change the motor.
    Greetings...

  4. #4
    Senior Tech 250+ Posts
    MP-C3002 toner build-up at fuser entry


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    Re: MP-C3002 toner build-up at fuser entry

    Quote Originally Posted by slimslob View Post
    You have to correct the cause of the toner getting on the fusing entry guide. In cleaning the entry guide you are treating a symptom not the problem. Ricoh machines are notorious for toner scattering. It is made worse by low print volume, toner concentration in the developers and use of after market supplies. Thoroughly clean all scattered toner. If you have been using after market toner, throw it out and replace the developer. Use only Genuine Ricoh. Finally make the changes in the attached document.
    yes, i realise i'm treating a symptom by wiping the toner off, which is why i posted asking about cause

    there is no toner scattering anywhere else in the machine, not in the drum units, the dev units, the ITB or paper paths,,, just that one spot - if it was a scattering problem surely the fault would have occurred gradually and gotten worse over time, not suddenly (perfect for years and overnight fault)

    no aftermarket products are being used

    sadly the service manual doesn't include theory of operation, it seems to me residual charge is left on the paper after transfer and that is attracting the toner to the guide

    thank you for your post and the document

  5. #5
    Senior Tech 250+ Posts
    MP-C3002 toner build-up at fuser entry


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    Re: MP-C3002 toner build-up at fuser entry

    Quote Originally Posted by Zeldaman View Post
    Hi there!
    Also make a check if the fuser-motor is OK. Thereīs a bulletin about this problem, and they say if the problem occurs to change the motor.
    Greetings...
    thank you for your post - i don't suppose you have the bulletin?

  6. #6
    Master Of The Obvious 10,000+ Posts
    MP-C3002 toner build-up at fuser entry

    blackcat4866's Avatar
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    Re: MP-C3002 toner build-up at fuser entry

    If I understand correctly, I'd imagine that if the fuser motor slows down a little, the imaged paper would buckle up far enough to scrape some unfused toner off of the top of the page onto the upper fuser guide. Most of that disturbed toner will get fused to the paper, but at the front and rear some of that toner will dust onto the lower guide, and partially fuse due to the proximity of the fuser.

    I've seen something similar on HP LJ 4100n printers. The fixing film on some of the aftermarket rebuilt fusers is not adequately greased, so the fuser motor can bog down, and get the same affect. I'm not that familiar with the MP-C3002, but I'm hoping they have a better fuser than the HP. =^..^=
    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 =^..^=

  7. #7
    Field Supervisor 500+ Posts Zeldaman's Avatar
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    Re: MP-C3002 toner build-up at fuser entry

    Hi there!
    Found it, itīs only in german language, but the pictures speak for them self.
    Greetings...
    Attached Files Attached Files

  8. #8
    Service Manager 1,000+ Posts
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    Re: MP-C3002 toner build-up at fuser entry

    This issue will occure very more quickly when customer uses thick paper without selecting it on the machine.

  9. #9
    Senior Tech 250+ Posts
    MP-C3002 toner build-up at fuser entry


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    Smile Re: MP-C3002 toner build-up at fuser entry

    Quote Originally Posted by Zeldaman View Post
    Hi there!
    Found it, itīs only in german language, but the pictures speak for them self.
    Greetings...
    a big thank you

    indeed the pictures speak for themselves,, looks exactly like the problem both on the fuser and the image - i'll check the fuser for free rotation and if all good fit a new fuser drive motor

  10. #10
    Service Manager 1,000+ Posts Polarbear's Avatar
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    Re: MP-C3002 toner build-up at fuser entry

    Quote Originally Posted by Zeldaman View Post
    Hi there!
    Found it, itīs only in german language, but the pictures speak for them self.
    Greetings...
    Translated data (courtesy of Google Translate) at the top of the page:

    If a heating unit reaches half of its profit target (approx. 140,000 pages),
    In the case of the old heaters, the sleeve unit could become heavier.

    And below the images:

    This can result in starting a print or copy operation from standby
    the rotation of the pressure roller, the sleeve briefly stops or rotates slower than the
    driving press roll.
    The first 2 nd to 3 rd leaves are braked, the paper is bulging in front of the heating rollers
    and the unfixed toner wears off the heater inlet.
    Thus, the pollution occurs before and after the fixing area as well
    Smudging of the typeface (see image overlay and effects on the chassis).
    With the SP 1-801-072 can speed the heating motor and paper transport
    adjusted (approx. to + 0.5% to + 1.5%)
    If the phenomenon also occurs after replacing the sleeve unit or the heater,
    There is still the possibility that the heater drive motor suffered from the load
    Has. Then the heater drive motor (order number: AX060430) must be replaced.
    Press the GREEN button!!

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