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Grimy LaserJet cartridge roller


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#1 debodun

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Posted 18 January 2013 - 10:29 AM

What is causing the toner cartridge to an HP LaserJet4 printer to look like this?

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#2 Baltboy

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Posted 19 January 2013 - 11:45 AM

Is it happening with every toner cartridge installed or only this one???? What is looks like is the corona is faulty or the electronics that control the corona are faulty. The corona (which is a non-replaceable part of the toner cartridge) applys voltage to the toner drum giving it enough attract the toner from the cartridge. Then the other half of the job is it is supposed to neutralize that charge so it doesnt do what you are seeing here.

If it is just this one the cartridge itself is faulty. If it is happening on all of them then I would suspect the controller is faulty.
Get your facts first, then you can distort them as you please.
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