Question about HP LaserJet 4 plus Printer

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My HP LaserJet 4+ toner is showing up on the page with a dark vertical streak the full length of the paper. What can I do to get rid of the streak? Thanks.

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Take the toner cartidge , clean the toner role with a dry clean cloth.
Put in in and you are set.

Enjoy.

Sharon

Posted on Feb 03, 2010

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Usually replacing the toner cartridge fixes that problem. Sometimes it's the fuser.

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We have installed in our office a Canon MF8330Cdn printer. Every page that is printed now have a vertical line down the entire length of the page about 1" from the left hand edge of the page. Can you...


Her are somethings to try.
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  2. Bad toner cartridge or bad toner.
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Sometime a small piece of paper can get jammed in the toner cartridge roller and cause this type of problem.
Also, often this seen with after market toner cartridges or refilled cartridges. Poor quality or old toner will clump inside the cartridge roller wiper blade. Just like dirt under the wiper blade on an auto, it will leave streak on the toner roller that are transfered to the print drum.
Take a look at the toner cartridge first and inspect the long black roller. If the streaks are there then you need a new cartridge.
If no on the roller streaks try to clean the corona wires.
Also inspect the drum to see if has streak. Try wiping drum with soft tissue paper to see if it come off or is etched into drum.
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Mar 10, 2011 | Canon Office Equipment & Supplies

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I have an HP Laserjet 4, quite old, and it has developed a very prominent streak almost straight down the middle of the page. Staples told me to clean the drum, but my manual doesn't even seem to mention...


Put paper in the manual feed tray. That's the pull down door in the front.
Print something. As the page gets fed 3/4 of the way into the printer, open the top cover. Pull out the toner. Look down at the paper. If you see the prominent streak, you probably have a bad toner cartridge. If the streak is not there, check the fuser. One of the rollers is bad.

While you have the toner in your hand, you should see a flap that is the entire length of the cartridge.
Put you thumb on the flap and pull it down. You will now be looking at the drum.
If you see the prominent streak, that's your problem. See if you can clean it with a soft lint free dry cloth. If the streak comes back, the rubber cleaning blade is probably bad. Replace the toner cartridge.

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I get a dark streak down the left hand side of every page.


It is either toner cartridge or fuser.
Print a few sheets of anything.
While printing, open the cover and pull out the toner.
Look down at the paper. If you see a dark streak, you have to replace the toner.
If the page is streakless, replace the fuser.

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We have a HP LaserJet 1320 printer that is leaving black marks or streaks on the paper-maybe ghosting(?). We have switched cartridges and it is still appearing. Any help would be appreciated!


Vertical lines, ghosting, streaks, and dots usually indicate a problem with the fuser when it doesn't regulate temperature correctly. When this happens the toner sticks to the drums and then copies the impression on successive pages, or gets scratched by the sand papery build up making lines as each sheet goes through.

Horizontal lines, page dusting, and vacant areas on the page are usually the toner or the drum, which on most printers are one unit.

If you have replaced the cartridge and the problem didn't go away, you probably have to replace the fuser.

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Open top cover and remove toner, shake toner cartridge and try a test print. IF image good then problem is low toner level in cartridge.

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This is more than likely down to the upper roller in the fuser assembly. It's the heat roller at the back of the printer. The upper roller wears so paper dust and toner stick to the roller which then can get deposited back on to the page.

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Was this happening before you swapped toner?
Is there toner streaks on the drum? Yes? Defective.
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2 IN. GRAY AREA DOWN SIDE PAPER


There are several things that can cause this. A worn toner cartridge and/or transfer roller can cause vertical smears, but it may also be a worn fuser assembly. The teflon coating on the fixing (heat) roller wears off, and leaves vertical streaks of varying widths on the pages. Sometimes you may see "ghost" images on the pages for the same reason. Open the back door of the printer, and hold down the exit guide on the fuser (carefull, it may be very hot). There are two long rollers, the lower one is black, the upper roller is either grey or shiny brown. That's the teflon coating. See if it's peeled or damaged. If so, replace the fuser assembly.

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