Question about HP LaserJet 4L Printer

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I am getting three dark verticle bars on my output. I wiped the toner cartridge roller clean but it didn't help.

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Try cleaning the charge wire above the drum (mounted on same unit). There should be a tool to accomplish this. Use caution as to not break the wire, otherwise either totally blank or totally black prints will result.

Posted on Oct 07, 2009

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Posted on Jan 02, 2017

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I have a hl2040 laser printer and i have black verticle lines on the paper. i have cleened the corona wire by sliding the tab back and forth on trum cartridge. the toner cartridge is new. the printer was...


Remove the drum and toner from printer, turn printer off and find the glass scanner bar on the top of the inside of printer. Clean that with a paper towel and window cleaner. Wipe dry. DO NOT SPRAY INSIDE THE PRINTER. Only spray window cleaner on towel.

May 26, 2017 | Brother HL-2040 Laser Printer

2 Answers

Vertical line on paper from top to bottom


In my experience if you refill the toner cartridge with the toners available in the market,though they are labelled"for Brother 2140" you get vertical dark patches on the paper. Once in a while you get good quality print too. Replacement with correct toner cartridge seems to the solution.

Oct 22, 2012 | Brother HL 2140 Laser Printer

1 Answer

Canon pc 941 copier cartridge issues


Just to clarify, you are stating INK? The Canon PC941 uses an OEM (Original Equipment Manufacturer) Toner Cartridge. Canon toner cartridges for PC941 printer are supplies produced by the same manufacturer that makes given piece of equipment. Toner cartridges produced by Canon are called OEM. Remove the toner from the machine and then use cotton swabs and alcohol to clean around the roller wheels of all drawer areas. Be sure to unplug the equipment before attempting to clean the wheels.

Jan 25, 2012 | Canon PC-941 Copier

1 Answer

Sharp Al1655cs copier black smudge down center of page about as wide as a pencil


Hi


Sounds like a fusing error . If your able to wipe the toner off the page its a fuser unit problem (replace fuser unit).

Also clean the copier's paper rollers. Marks on copies will occasionally be the result of a dirty paper-rolling mechanism. Simply access these rollers (your photocopier will likely have a plaque or series of signs indicating the locations of these areas) and wipe them off.

Clean the copier bed's glass plate. One of the most common causes of blemishes in photocopies is a dirty glass plate. In some cases a permanent mark, such as a scratch, will be present on the plate, showing up in every copy as a dark line or spot. However, most problems attributed to the glass plate can be fixed by wiping the plate with a soft towel and common household glass cleaner.

Clear any excess toner that has spilled or overflowed in the toner cartridge chamber. Excess toner will almost always result in blemishes on your copies. The most effective means of cleanup is to remove the toner cartridge and set it aside, thoroughly cleaning up any spilled toner in the compartment before putting the cartridge back in place.

Check for low toner levels. Low toner levels can actually contribute to unsightly lines and blotches on a photocopy. Most photocopiers will automatically indicate the need to replace an empty or low toner cartridge; while the toner is low, these models will permit continued copying. Consult your photocopier's instruction manual or key to warning lights and indicators for how to tell if the toner is low or empty.

Aug 03, 2011 | Office Equipment & Supplies

1 Answer

Extremely dark output drum issue?


It could be drum issue. But first, test it with a different toner or different cartridge. If you already have, then it could be the charge roller or the HVPS. Basically, points of failure would be cartridge/toner, charge roll, HVPS and the HVPS contacts. Hope this helps. But if you need more assistance, leave a comment and I'll get back to it. Thanks.

Apr 20, 2010 | Lexmark T644 Laser Printer

1 Answer

Dark band on left hand side of incoming faxes


Your toner cartridge is leaking toner onto the transfer roller. There is no cure except for replacing the cartridge.

Dec 10, 2009 | Panasonic Panafax UF-595 Plain Paper Laser...

1 Answer

Spring came loose under the roller


Hi niffieprinti:
If you remove the toner cartridge again and remove the roller (Registration Roller) one side of the roller has a gear and the other has a silver bar, well one spring goes under the gear on the left side and the other spring goes under the bar on the right side of the roller. The springs apply pressure to the paper against the toner cartridge so that the image is clean and dark. if you have any further questions let me know.

Thanks
pdouglasss

Apr 17, 2009 | HP LaserJet 8150 Printer

1 Answer

Print quality on Lexmark T640


There are 2 likely possibilities:
1. Very dark print usually indicates your charge roller is not removing the charge from the drum.
The charge roller "erases" the charge laid down by the laser from the previous pass and prepares it for the next portion of the image. If not erased or has a latent charge it will pull toner onto the drum. Try changing the charge roller . 2. Your wiper blade in the cartridge may not be properly wiping excess toner. Swap the toner cartridge with another and see if the problem goes away.
There is a video here you can watch on changing the charge roller:
http://www.fastprinters.com/TechSupport_repair_parts.asp#T640VIDEO

Mar 24, 2009 | Lexmark T640 Laser Printer

2 Answers

DELL 1600N


If it makes verticle lines only when using the document feeder it is most likely a dirty glass strip over the scanner light bar. If it makes verticle lines in all modes (printing, flat bed scanning/copying, receiving faxes) it could be the fuser or a dirty glass over the laser where ever the laser images to a drum roller (usually a larger green roller). It is possible that this green drum roller is inside the toner - if so - replacing the toner cartridge could fix it. Maybe you could try an old used toner to see of the problem changes - if so - it is very likely that a new toner would fix your print quality issue.

Jan 09, 2008 | Dell 1600n All-In-One Laser Printer

2 Answers

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.

Feb 10, 2007 | HP LaserJet 4 plus Printer

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