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Diagonal 1/2 inch invisible lines on paper

The toner looked like it needed to be changed, so we changed it....then the lines appeared. is it a toner issue...

i wiped the glass and still it didn't help.

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Hello sir; There are two factors cause this problem,
1, charge and discharge corona wire need to clean.
2, need to replace developer.

Posted on Feb 03, 2009

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HP m410n laserjet pro banding gray vertical lines


the two places to look is transfer roller and the fuser unnit.
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L have an HP2420 with the usual line down the left side 1.5 inches from the edge. I cleaned whatever I could see and it is less but still a faint line. We don't have high volume, use only HP cartridges...


Run a "half test". Put paper in the manual feed tray(tray 1). Print anything. Watch the paper. When it gets about 1/2 way into the printer, open the top cover. Remove the toner. Look down at the paper. Do you see the "usual" line? If yes, replace the toner cartridge. If no the fuser is probably bad.

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When you print each page has a gray/black line running down the page from top to bottom about 2.5 inches from the edge of the paper. Sometimes it is darker and other times it is lighter. We have tried...


While the line is showing up on the output pages.
Stop printing and put paper in the manual feed tray (tray 1).
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Pull out the toner and look at the page inside the printer. If it doesn't have the grey/black line, get the fuser replaced. It is defective.

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My copies have a thin blank streak about 1 inch in on the left side. the streak is about 1/4 inch wide and goes down the whole sheet of paper


Start a print or copy, and just as the trailing edge of paper is entering the machine; quickly open it to stop print and take out the cartridge and look at the drum and the paper underneath. If the issue is there at that point then it would point to the cartridge. If not then it is in the fuser area.

Clean the loose toner up with a dry lint free cloth.


If I could be of further assistance, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response

Thanks, Joe

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Don't know about your "primed" toner, but go to Diagnostics and run the PQ test. See what that looks likes. Go to Disable Cartridge Check and swap the black and cyan toner. Run another PQ test. Are the lines still there and are they black or cyan? If they are cyan, the cartridge is bad. If they are black it's not the cartridge. It going to take a tech to look at it.

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I have a Brother MFC 8440..the paper has vertical black lines


Try changing the toner, if it's generic that's your problem, and if it's either an old brother drum or a generic you may need a new one. There is also a glass to clean, it's right above where the drum sits inside, 1/2 inch wide across the top. Wipe with a dry cloth.

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1 Answer

I have three horizontal lines across the printed document


Hello,

Here is the print defect information from the service manual.

1. Toner Cartridge.
The circumference of the photoconductive drum is 3.75 inches (94mm). The circumference of the developer roller is 2 inches (51mm). If a defect appears in the print image at these intervals, assume the defect is associated with the Toner Cartridge. Replace the Toner Cartridge.
2. Fuser Assembly.
The Fuser Roller’s circumference is approximately 2.5 inches (63mm) for the LJ4, and 3-1/8 (79mm) for the LJ4+/5. If a defect
appears at this interval, assume the defect is associated with the Fuser Assembly. Clean the Fuser Assembly rollers. Replace the assembly if necessary.
3. Dirty Roller.
Any dirty roller along the paper path may result in a pattern of
repetitive print image defects. Examine and clean rollers along the
paper path.

We have the full service manual download available for $6.95 if you need it. We also carry all repair parts for your printer.

I hope this helps, if so please rate my solution.

Buddy
Corporate Computer
www.ccl-la.com
Over 21 years of PC and printer support/repair

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It is a bad Toner Cartridge or Fuser. Most likey a bad toner cart.

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Some of the brother printer use a toner cartridge that does not have a drum, have u replaced the drum recently, or does the toner cartridge have it installed? If it has a seperate crriage for the drum, let me know.

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MACHINE DRUM UNIT, IMAGE BELT, AND TONER UNIT NEED TO BE REMOVED AND CHECKED AND CLEANED IF THEY LOOK GOOD THERE MIGHT BE A PIECE OF PAPER BLOCKING THE LASER SITE AREA INSIDE THE MACHINE IF ALL IS GOOD, CHECK THE FUSER FOR WOREN HOT ROLLER ,DIRT OR PAPER WILL BLOCK THE IMAGE TH THE PAPER

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