Question about HP LaserJet 2420 Printer

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Black line on right hand side of the pahe

When printing a page of text a black line appears about 30mm in from the right hand edge. Could this be telling me that the toner is almost at an end?

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This usually indicates the the Teflon coating on the fuser roller is damaged and will need to be replaced. The fuser is the part at the back of the printer that heats the toner and fuses it to the paper. The heat roller is coated with Teflon so the toner does not stick. If something scratches this coating the toner will stick and come off on the paper in a line where ever it is damaged. Here is a link to an article showing how to check the toner, the guide is for the 2100 printer but the issue is the same.

http://www.ccl-la.com/blog/index.php/how-to-fix-hp-laserjet-2100-vertical-lines-on-print/

Posted on Mar 25, 2013

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Posted on Jan 02, 2017

SOURCE: Black lines on the right side

The vertical black line at the right-hand side of the page when the printed document includes an image is a problem with all currently available HP Laserjet 1018, 1020 and 1022 drivers. While waiting for HP to fix the problem (they haven't even acknowledged it yet in their webpage) you can bypass it thus: a) Click on the 'Properties' button. b) Click on 'Finishing' and select 'FastRes1200' (this makes the line narrower). c) Click on 'Basics' and select 'Rotated', i.e. printing the page from bottom to top (this elliminates the line completely, in combination with 'b' above). This is a home-made solution I found after numerous trial-and-error attempts and having downloaded several drivers from the web. As a token respect to all of us who have paid money to buy these printers, I hope HP will soon recognize and solve the problem.

Posted on Sep 25, 2007

  • 38 Answers

SOURCE: HP 4700 - tones dropping in on transfer kit w/ new toners

how old is it?

Posted on Oct 30, 2007

  • 1 Answer

SOURCE: Print fading down right hand side

I was able to fix it by taking off the top of the printer. This involved taking off 4 screws on the top of the printer. I then had to disconnect the wires going to the control panel by unhooking them from the right side. I then located a thin rectangular box which I'm assuming houses the laser. I removed this with 4 more screws and turned it over. There was a little metal flap that I moved back and below was the mirror the lasers shoot on before going onto the toner.

In the same spot where I was having fading, I noticed a lot of toner on the mirror, so I cleaned it of, put it back together, and the fading was gone.

This was after I tried a new toner and maintenance kit.

Hope this helps

Posted on May 01, 2008

SOURCE: Single black line down center of newly copied page when using Auto feeder to copy

I had this same problem but after while it went away - so my solution would be to just keep using it, and perhaps it will solve itself.

Posted on Jun 05, 2008

  • 25 Answers

SOURCE: printer prints a line across the paper around three inch from the left hand side of the page.

Check your Toner Carts.
Is the line a certain color?
Black perhaps?

Lift the door of the toner cart.
If you see a streak on your toner drum, you will see a streak on your paperwork.

Look at your fuser as well.
Is there a problem with the big orange roller?
BEWARE! Don't touch the fuser roller its EXTREMELY HOT!
Let the printer cool down before inspecting.

Posted on Aug 14, 2008

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My printer is printing black horizontal lines down the right side of the paper - what is wrong?


Needs Drum If you pull the drum unit out you will see on the drum different shades of color lighter is wear the lines come from. Buy a rebuilt drum much cheaper and they work, may have to reset the drum count if the change drum lite on...

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Printing not dark enough or varied in darkness
If the print is a dismal gray rather than a sharp black, you are probably almost out of toner. This can manifest itself evenly across the entire page or in splotches or stripes, depending on the printer.

Sometimes you can wring a little bit more out of a toner cartridge by taking it out and gently shaking it from side to side (never up and down, as toner can spill out). You can also try turning up the printer’s contrast adjustment, if it has such a knob (usually on the back side if it exists). Faded print can also result from a dirty corona wire, because a dirty wire inhibits a full electrical charge from being passed.

If the printouts are consistently varied in density, and you have to frequently remove the toner cartridge and shake it to redistribute the toner inside it, make sure the printer is sitting on an even, flat surface.

Horizontal black lines
A horizontal black line on the printout is probably the result of a dirty or damaged roller. There are lots of rollers in the printer, and you can use the space between the lines on the page to determine which roller is causing the problem. Measure the distance between the errant black lines on the page and then use Table A to determine which part might be causing the problem. Table A
Distance between lines
Faulty part
0.5”
Registration assembly
1.5”
Upper registration roller
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Lower registration roller
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Toner cartridge developer roller
2.56”
Lower fusing assembly roller
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Upper fusing assembly roller
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Regularly spaced splotches
If there are evenly spaced black spots but they don’t extend all the way across the page, the problem is probably a scratch or flaw in the drum or a build-up of toner on the fusing roller. If the spots are less than three inches apart vertically, it’s probably the drum, because the drum has a larger diameter than the fusing roller.

Vertical black line on edge of page
This can indicate an almost empty or faulty toner cartridge or (less frequently) some spilled toner inside the printer.

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I have a grey/black line all the way down the right hand side of the page


Run a half test.
Put paper in the manual feed tray.
Print something, anything
When the paper is 1/2 way into the printer, open the cover.
Pull out the toner cartridge. Look down at the paper.
Does it have a black line on the right side?
If yes, replace the cartridge. If no, replace the fuser.

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Hi when printing black or grey outside edges


sounds like your black toner cartridge is getting low or not filled evenly. To fix this until it get a bit lower on toner just take the cartridge out and holding it up right give it a few shakes side to side. The will spread the toner power out inside and you should be printing normally again.

This can also happen if you moved or bumped the printer. Usually you only see this when the toner is low or after you print a lot of pages. Most text is in the mid of the paper so thats where the toner get s used the most.

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Black lines on the right side of every copy


depending on what the lines look like it could be the charge roller or transfer roller.
A defect on the charge roll appears as black areas on the front of the test page, and as light gray areas on the test page.
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