Question about HP LaserJet 2100 Printer

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Ghosted image Hi all. Been having a problem with my 2100 where it reprints a 'ghost' of the current page several times. I thought it was the fuser and bought a replacement online (albeit, a used one). I'm having the same problem now. So I'm wondering if 1) there's something else going on or 2) if I got a bum fuser and now have two non-working ones... Ideas? Here's a link to the image...

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  • djfern Nov 06, 2008

    Hey guys, I did a little check, based on another tip from this site.

    I printed a page through manual feed and then turned off the printer before it reached the fuser. 

    Then i took the toner cartridge out. 

    The image on the page, right out of the toner, has the ghosting on it.

    Do you think that getting a new toner cartridge will fix the problem?


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Usually the ghosting of image is due to bad fuser. since the fuser is not hot enough to fused the ink to the paper, the image is then transfer to the roller from the paper, you have ghost.
try to clean the rollers, inside of the machine and the paper pickup roller.
if you suspect the roller is not clean, you can change it. get a maintenance kit form HP. or other reseller.

Posted on Nov 06, 2008

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Okay, this is going to be difficult to isolate.

From the service manual: "Repetitive print defects usually are associated with a specific roller within the printer or the Toner Cartridge. Use Figure 7-1 to isolate the cause of repetitive print defects. Align the first occurrence of the defect with the top of the “ruler” (at the top or bottom of the misprinted
page), and measure to the next occurrence of the defect to determine the roller in question.
When the defect pattern matches the pattern of the ruler, replace the indicated roller."

I can't post the ruler from the service manual here, but it gives some measurements.

Start with the initial point where the occurence started then measure down to the next occurence.

If it occurs at 38 mm, then it is your primary charging roller.
At 42 mm, feed roller.
44mm, registration roller
46mm, transfer charging roller
50mm, developing cylinder
63 mm, pressure roller
75mm fusing film unit
94 mm, photosensitive drum

I hope this helps :c)

Thanks and please take a moment to rate as fixya.

Posted on Nov 06, 2008

  • Kevin Shafer
    Kevin Shafer Nov 06, 2008

    Defective toner cartridges as well as the drum can also cause this problem. If you would like, I can email you the service manual.


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