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From: jwi@cbnewsj.att.com
Newsgroups: comp.laser-printers
Subject: Re: Dark lines on edge?
Summary: Dirty Corona Wire Inside Cartridge
Message-ID: <9105131959.AA02271@crayola.cs.UMD.EDU>
Date: 8 May 91 15:08:16 GMT
References: <9105071854.AA21794@crayola.cs.UMD.EDU>
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In article <9105071854.AA21794@crayola.cs.UMD.EDU> c3ar@ZAPHOD.UCHICAGO.EDU (Walter C3arlip) writes:
> Our laser printer, an HP Laserjet III, I believe, has started printing a
> thick jagged line of black down the right hand edge of almost every page.
> I remember seeing this on laserwriters when I was a grad student, and it
> was always mysteriously fixed by someone.
> 
> Can anyone instruct me on how to fix this?
> Will it go away with a new cartridge?
> Is there something that needs adjusting or cleaning?

The corona wire inside the cartridge is dirty.  Use the tail end of the
little brush to clean it.  Complete instructions are in the booklet that
is packed with each cartridge.  This will work for a while, then the line
will come back again.  Clean the corona wire again to get rid of it again.
Eventually, when you put in a new cartridge, the problem will go away.

If you reuse cartridges, don't just refill it, have it remanufactured.  The
remanufacturing process puts in a new corona wire while the refill process
doesn't.

It's also a good idea to clean the whole inside of the printer when you
change cartridges.

Jim Winer -- jwi@mtfme.att.com -- Opinions not represent employer.
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