Question about HP LaserJet 2840 Printer

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Toner specks along the edge of the page

I just recently installed a new drum and new color cartridges into my HP Laserjet 2840 printer, and colored dots are now appearing down the left side of the printed page: two dots close together, then a space of about 3/4", then one dot, then two dots close together, then a space of about 3/4", then one dot, and so on. These dots appear about 1/8" from the edge of the paper. Thank you very much for any clues to the problem—or even better, any solution! —Gregory

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  • gregory_duer Sep 25, 2009

    Thank you for your response! I recently replaced the yellow, magenta and cyan cartridges; the black one will soon be replaced. The dots down the left edge of a printed page are of these same four colors. (I could send you a jpeg image of the dots if you send me an email address.) Otherwise I could represent the dots this way, with the perpendicular lines indicating the edge of the page:
    | . (black dot)
    | . (magenta dot)
    | (space)
    | (space)
    | . (cyan dot)
    | . (yellow dot, hardly visible)
    This sequence of colored dots runs down the entire left edge of the page. Thank you very much for any explanation!
    Very gratefully,
    Rev. Gregory Duerr, Mt. Angel Abbey, St. Benedict, OR 97373
    gregory.duerr@mtangel.edu

  • DeJudge May 11, 2010

    Which color toner did you replace? What color are the spots? Cheers DeJudge

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Rev. Gregory.
Its looks like you have a small pinhole, or divot, on a imaging conponent that is common to all four toner cartridges. Remove the drum unit from the prtr and keeping the green handle close to you pull back the shutter which covers the drum, and look for spots of toner at the either end. If you hold the page with the spots on it, with the leading edge centered and touching the drum, it will give you some idea where the edgeis relative to the end of the drum. If you can't see any corresponding spots on the drum surface.
Put the drum unit back into the prtr and allow the prtr to restart, then switch off and remove drum, this will have turned the drum to a new position, and should show any defects. Only expose the uncovered drum to light for a minute at a time, and avoid touching the surface.
Let me know what you find.
Cheers
DeJudge

Posted on Sep 27, 2009

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