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Doc12 Upper Fuser Roller

Toner sticks on the upper fusser roller, do you know what i can fix it?

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That roller will need replaced along with replacing the wick and donor roll. The teflon wears and the ink sticks to the roller instead of peeling off.
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Posted on Apr 26, 2008


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1 Answer

Fuser upper roller problem

Apparently you just need the pressure roller, if noisy, you can change the bearing.
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Apr 24, 2012 | Canon imageRUNNER 8500 Copier

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Have a black line printing on the bottom of the page. It appears on regular paper and when we put in paper with a footer, it smudges it.

your fuser unit needs an upper fuser roller or just replaced... there is one thing you can do to see if that is what you need... look inside fuser (its the hot part) do you see a black roller? it sould have no silver or lines on it. That roller is coated with tephlon (i dont know how to spell it) if the coating is gone toner will stick to it and cause that problem

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Jun 03, 2010 | Ricoh Aficio 450 Copier

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Making a cracking noise from the fuser unit area

I'm assuming that the cracking noise occurs as the printed page is passing through the fuser?

Check your print settings to ensure that your paper stock is not set to heavy (card). This setting applies extra heat to the fuser to 'fuse' the text to the paper, which is what you want for card, but if you are printing normal stock, it will overheat the toner causing it to stick to the fuser roller on the way through and make a 'cracking' sound as the paper peels off the roller.

Whilst it is possible that there is a fault with the thermostat and the fuser heater is not switching off, this is rare. If you have been printing a number of pages at an incorrect paper stock setting you may need to clean baked text of the upper fuser roller, in which case, apply the following procedure.

After switching off the pirnter and it has had time to cool you may be able to clean the upper fuser roller with a rag moistened with a little methylated spirit, although you will not be able to rotate the roller fully without removing the fuser assembly from the printer. If the roller is physically damaged however, eg. scoured, cleaning will not resolve the problem, the roller will need to be replaced. This usually occurs after a long life, so it is generally best to install a new or reconditioned fuser (includes new rollers, top and bottom and new heat lamp).

Mar 19, 2010 | HP LaserJet 2420 Printer

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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.

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Double printing

HP do not use fuser oil. The upper roller is made of a non stick coating. When this begins to waer the toner sticks to the roller along with excess paper dust off the paper.This is what will cause a repeat image on a page. You need to swop the fuser unit to cure this fault

Oct 01, 2009 | HP LaserJet 4250n Printer

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Upper (gray) fuser roller needs replacing, (tear on 1 side).

If you are handy it is not hard to replace the upper fuser roller you will need a small phillips screwdriver and pliars

the fuser lamp goes through the fuser roler so youmust disconnect the power leads to the lamp and remove the lamp

You do have to release the back side of the drive
gear on the fuser roller

when you install the new roller be sure to put some silicone fuser oil on the cleaning pad

take your time good luck

Jan 04, 2009 | Office Equipment & Supplies

1 Answer

Large grey streak down center of page

It is the fuser at rear giving you grief! The upper heat roller has a teflon coating that wears away allowing toner to stick to roller and smudgin prints as they pass threw it. The fix is to replace fuser assembly, take to brother dealer to fix.

You can prove it to yourself by timing the print to stop mid way threw machine then remove print cartridge and look at paper, you should see a image is good untill it hits the fuser,( pre fused image "rubs off" paper.) If you have changed drum and toner thats all it can be. They all do it in time.

Fuser is hot bit at rear, pull out drum and look in the back with a small torch you will see upper heat roller is worn, guestimation $90 for fuser plus labour to fit.

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Paper jam

try cleaning all rubber rollers with a rag and some rubbing alcohol.

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