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Horizontal stripes on Samsung ML-1640

Discussion in 'Electronic Repair' started by Jens Herrmann, Jun 14, 2013.

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  1. Hi,
    Yesterday, I got a laser printer Samsung ML-1640 with this problem:

    http://img844.imageshack.us/img844/2695/vzv.png

    The interval is 75 mm which points to the the drum (diameter of 24 mm).
    Last year I had the very same problem with another ML-1640 which I fixed
    by inserting a refilled and tested drum-toner-cartridge from Ebay.
    Does anyone here have an idea what the cause of this problem could be?
    The cartridge can be disassembled to the last piece which I did once
    without finding anything suspicious.

    Thanks in advance
    Jens
     
  2. N_Cook

    N_Cook Guest


    Remove and shake it all about, the developer gets clumpy and blocks normal
    rotation of the material
     
  3. The obvious answer is the "dumb" and arguably useless one -- the drum has been
    damaged in some way.

    Has the cartridge been left outside the printer for an extended time,
    especially in bright light? Many laser printers use an organic
    photo-conductive drum coating that can be damaged by prolonged exposure to
    light.

    Outside of cleaning the drum, and the entire paper path, I don't know what to
    suggest.
     
  4. Found that to be the case in both cartridges with the help of a guy in a
    forum. I will buy a replacement cartridge again.
    I got the device in used condition and do not know what has been done
    before. Can things like that also happen by not using the device for a
    long time? Just because the roller is at the same spot all the time?

    Regards
    Jens
     
  5. See the other posting for the solution.
    BTW, this model does not have the classical developer/toner system
    anymore. There is just a toner box saturating a roller (with an excess
    wiper) which on the other side touches the drum.

    Regards
    Jens
     
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