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Prints black vertical line at bottom of page on every print. HP 8550gn

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This should help -

Developer streak
Developer streak is characterized by a line of dark or missing toner
that stretches from the leading edge to the trailing edge. Replace the
toner cartridge corresponding to the color of the developer streak (for
example, if the streak is magenta, replace the magenta toner
cartridge).

Repetitive defects troubleshooting
Repetitive defects are defects that occur in the same vertical position
on the page, but not necessarily on every page. Most repetitive
defects are caused by problems with one of the following, and are
indicated by the positioning of the defect on the page:
 developer roller (at 38 mm)
 charging roller (at 44 mm)—see additional information under
“Charge roller set” on page 454.
 cleaning roller (at 56 mm)
 developer DSD wheels (at 65 mm)
 transfer roller (at 66 mm)
 transfer drum (occurs once per 11-by-17 inch or A3-sized page,
or every other letter- or A4-sized page)
 fuser (at 150.5 mm)
 imaging drum (at 195 mm)
 transfer belt (at 222 mm)

Posted on May 21, 2008

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Hp cm2320nf prints 2 black lines vertical all the way down pg 1/2' apart


Remove cartridge observe on cartridge drum finds any vertical toner line? replace cartridge, as well as check all cartridges same manner...if found replace them..If its only on copying: clean flat bed both glasses..with glass cleaner..

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1 Answer

A black vertical line is on each copy.


Try the 6500 driver. I have seen that allow text print but no graphics. If line disappears, reinstall 7680 driver. If line comes back, contact HP about updated drivers, check their website OR try to get your money back. I have never had luck with this series of AIO.
Good luck.

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A vertical black stripe is printing on the left side of the page.


Have you tried replacing the toner cartridgein the printer? If you print a page then remove the toner cartridge, carefully open up the cover that covers the the drum on the toner cartrdige.You can often see a line that corresponds to the line printed on the page.

Oct 13, 2009 | HP LaserJet 1022n Printer

1 Answer

When copying or printing a fax, a vertical black line 2-3 mm line


try cleaning the rollers with water in the feeder at the top check the glass too too see if it's dirty

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1 Answer

HP Laserjet 3330 printed dark page especially around the middle


Does this happen both when copying and printing?
For printing solution, try another toner cartridge.
If lines continue to appear when copying (primarily through the automatic feeder) then lift the auto feeder, and clean the glass -mainly the narrow piece on the left side.

please rate solution :)

Apr 07, 2009 | HP LaserJet 3330 All-In-One Printer

1 Answer

Problem with printing smoothly


Hi morshi. I found a potential solution to your problem with your 5610 printing vertical lines at HP.com:

Vertical black lines or streaks

It's hard to tell from the rest of your message what other problems you're describing. I did find a troubleshooting page at HP that shows how to address general print quality problems:

Problem with quality of copies

If those links don't solve all of your problems, the Color printing issues page for the 5610 at HP has numerous other solutions:

Color printing issues

I know the name of that last link may seem misleading since you haven't described color printing issues, but the links on that page offer different general print problems and their solutions.

Good luck.

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1 Answer

A pink line is on every page printed


This is a very common problem with this model printer, it is caused by toner on the scanner mirrors. You need to clean the scanner assembly unfortunately it isn't very easy to dissemble the printer to get to it.

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1 Answer

Black vertical lines on printed pages


check the "photoconductor unit" (pg 37 in the Maintance manual)

ours was doing it with the magenta and saw a faint 'scratch' on the roller. will attempt to replace and report back if this fixes it.

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2 Answers

HP 3050 Black Line


I was getting a verticle black line and I had to clean the glass, the long white bar above the glass, and the white and black rollers before my problem was solved.

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