Question about HP LaserJet 4050 Printer

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I replaced the fuser and rollers on a HP 4050 and I'm still getting a 1/2 inch wide mark on the right side of paper? What is next?

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Try replacing the toner cartrige.

Posted on Sep 09, 2010

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1 Answer

Printouts have marks on right side of paper


1. Check with another cartridge.
2. Replace teflon sleeve if its available or replace fuser assembly.

Nov 29, 2012 | HP LaserJet 2420 Printer

1 Answer

Hp 5550 patchy print


Most of the cases fuser assembly or supplies are causes of ghost image. If image is not properly transferring on media causes transfer roller or ETB.
Do this small exercise: Give print command, wait till paper grabs, once paper entered in cartridge area, power it off, open top & front cover, remove paper and see the print quality.Observed any ghost image what you observed? No ghost image? then problem with fuser assembly..

1.Remove fuser assembly, check any toner particles deposited on surface of fuser transfer roller or heater roller.. if found clean carefully with good cotton cloth while fuser having certain temperature,pl avoid metal & sharp objects to clean..
2. Clean paper path roller(You can observe the rollers to push the paper to reach the destination)
I hope this exercise will resolves the issue..

Jul 26, 2012 | HP Color LaserJet 5550hdn Printer

1 Answer

Take apart hp3005dn


Analyse what type of jam it is...based on that we can shoot the trouble.1. Paper is jamming before entry in fuser and its folds like curl in the cartridge area.. A. Fuser Teflon sleeve not rotating or slow rotation results media(paper)unable to reached the destination in specified interval. Replace fuser assm or Teflon sleeve.2. Paper jamming after fuser assembly crossed little bit ( approx 1-2 inch).A. Clean fuser out paper sensor, check sensor flag & flag spring located in fuser assm.3. Paper jammed after fuser crossed more than 6 inches..A. Check paper pick up roller warn out(tray1 or 2), check registration sensor located under registration assm.How to remove fuser assm: remove back door, see the snap shot...
1_9_2012_3_51_52_pm.jpg
Registration sensor location:

1_9_2012_3_53_28_pm.jpg
Pick roller roller tray 2 :
1_9_2012_3_54_49_pm.jpgPl try it carefully..Best of luck...

Jan 09, 2012 | HP LaserJet P3005n Printer

1 Answer

Laserjet 4050 - black streaking on right hand side of page


It is either the toner cartridge or the fuser.
Put paper in the manual feed tray.
Print the Configuration Pages.
When the sheet is half way fed into the printer, open the top cover.
Remove the toner and look at the sheet of paper. If you see the black streak, the toner is bad.
If the sheet looks good, the fuser is bad. Probably a bad roller, which you can see looking at the fuser.

Jan 21, 2011 | HP LaserJet 4050 Printer

1 Answer

My HP Laser Jet 4000TN printer makes a line along the right side of each sheet (about 2 inches in from the edge of the paper). How do I get rid of this?


3 possible options:

1 - Swap/ Replace the toner cartridge as it may be leaking
2 - the transfer roller may need to be replaced or cleaned(This is the roller you see once you remove the toner cartridge) easy way to tell is how much black toner you have in the bay of the machine where the toner cartridge sits
3 - the fuser needs to be replaced. IF the toner was leaking it can contaminate the fuser which will burn the black line into paper.

Oct 19, 2010 | HP Office Equipment & Supplies

1 Answer

Printing grey strip down the left side of the paper


If it's not the toner cartridge it has to be the fuser. Pull the toner cartridge and gently open the flap to look at the roller. If it looks clean, pull the back door off the printer and look at the fuser rollers. I bet the end of one of the rollers is damaged.

Sep 23, 2010 | HP LaserJet 4050 Printer

1 Answer

When printing, I see a vertical streak on the printed page, from top to bottom, about 2 1/4 inches from the left side of the paper, and about 1/16 of an inch wide. I can't seem to see what causes this. The...


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.

Oct 15, 2009 | HP LaserJet 1020 Printer

1 Answer

Roller marks on paper


Hi, Sounds like your problem is not the rollers. If its marked on the pages, its not the pickup rollers nor the Exit rollers that leave marks.

Either 1 you have a bad Toner Cartridge. or 2 Fuser sleeve is bad and needs to be replaced.

(1) If the toner cartridge is refurbished that is your first indication that you should replace with a HP Manufactured Toner. Refurbished toners always go bad. In fact many of them do not even last the amount they are said to last.

(2) If its not the toner cartridge, then the only other thing that is fusing roller marks is the fuser. In order to do this. You will have to remove the back panel. Unscrew the fuser.*note fuser can be extremely hot after use. be careful.* From this point you should be able to look at the Fuser sleeve and see a worn out sleeve on the side which your roller marks are at. You will either need to replace it if it looks bad. Or you can clean it when its got with a piece of paper or an alcohol pad to remove excess toner clocked on the fuser.


That toner is whats showing up as roller marks on your prints.


I hope this helps. PLEASE RATE Porfavor :)

Victor C.

If you need more detailed help please comment back ill be willing to help. I like helping others.

Sep 23, 2008 | HP LaserJet 2100 Printer

1 Answer

An inch wide streak appears on the right side of a laser printer printed page.


If you can rub the toner off the paper it is the fuser.

fuser, the part of a laser printer that melts the toner onto the
medium. It consists of a hot roller and a back-up roller. After toner
is transferred to the paper, the fuser applies heat and pressure to
ensure that the toner stays on the paper permanently. This is why
paper is warm when it comes out of a laser printer.

For toner problem:

Do a half test as follows -
Print one sheet from the fold down tray, just as the trailing edge of the paper
goes into the printer open the toner door to stop the printer. Remove the toner
cartridge, are the marks on the paper that you can see in the printer? If they
are there the cartridge needs replacing.


Jun 03, 2008 | GCC Technologies Elite 12/600 Laser...

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