Gears in the devlopment unit

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  • sandmanmac
    Field Supervisor

    Site Contributor
    2,500+ Posts
    • Feb 2009
    • 3973
    #16
    Re: Gears in the devlopment unit

    Originally posted by slimslob
    It's usually the conductive bearing at the rear that seize up. There was a thread a couple o years ago that gave the part # for the bearing and a link to a video on how to remove it.
    Agreed, but I've personally seen both.
    In fact, I had one with the gears chewed up just a couple of weeks ago.

      Comment

      • fshead
        Service Manager

        1,000+ Posts
        • Jan 2009
        • 2356
        #17
        Re: Gears in the devlopment unit

        Originally posted by blackcat4866
        On a more elemental level, the developer is agitated to produce the tribo-electric effect, which is essentially static electricity, which attracts the toner particles spherically around each particle of ferrite.

        Without agitation there is no tribo-electric effect. The toner does not statically cling to the ferrite particles and just sits in the bottom of the developing unit. The toner sensor identifies low toner density and dumps loads of toner into the developing unit. If this continues for any length of time the developing unit will fill until toner is bursting from the seams of the unit, or the machine indicates low toner, or both. =^..^=
        "tribo-electric"
        i have not heard that phrase in 25 years maybe more ...
        Makes me think back on old analog b/w sharp or minolta copiers where you
        would adjust the dev unit after installing new developer using a allen key sensor that
        you would turn till both leds would flicker................its come a long way

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          • blackcat4866
            Master Of The Obvious

            Site Contributor
            10,000+ Posts
            • Jul 2007
            • 22973
            #18
            Re: Gears in the devlopment unit

            Originally posted by fshead
            "tribo-electric"
            i have not heard that phrase in 25 years maybe more ...
            Makes me think back on old analog b/w sharp or minolta copiers where you
            would adjust the dev unit after installing new developer using a allen key sensor that
            you would turn till both leds would flicker................its come a long way
            You got that right. =^..^=
            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 =^..^=

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