Question about HP LaserJet 4600dn Color Printer

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My 4600 is running a black line down the center of the page. Before I open another toner I want to find out if there is any other reason this is happening.

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The black line is either coming from the toner cartridge or the transfer belt. You can usually see a line on the transfer belt if that is the cause. Just open the large fron door and look at the transfer belt that is mounted inside the door. If you can see a line of toner on it similar to what you see on the page then there is your cause. You can also look at the drum in the black toner cartridge to see if there is a line on it as well. That should elp you determie wether to change it or not. Are you using remainufactured toners or OEM HP?
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Posted on Nov 05, 2010

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HP 2840 printing two thin black lines from top to the bottom of the center of the page is that a fuser kit problem?


It could be a fuser problem.
Put paper in the manual feed tray. Print a few pages. As the paper gets
1/2 way into the printer, open the cover. Look down at the paper in the printer.
If it has 2 thin black lines, the toner cartridge needs to be replaced. If there are no lines the fuser is probably bad.

Jul 22, 2011 | HP LaserJet 2840 All-In-One Printer

1 Answer

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).
Start printing again. As a page gets pulled into the printer about 1/2 way open the top cover.
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.

Jun 09, 2011 | HP LaserJet 1300 Printer

2 Answers

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.

May 11, 2011 | HP LaserJet 1010 Printer

1 Answer

Hi Everytning I print has a very narrow pink line straight down the centre of the page, also every so often the print has a black/yellow/blue/pink thick line running across the page. Thanks


The narrow pink line is coming from your magenta toner/drum cartridge. You may be able to open the from cover and look at the 4 toners. If you look at the magenta (like pink) cartridge, you might see the thin line on the drum surface.
The multicolored band that sometimes shows up on your prints is most likely the transfer belt unit. This is caused by an area of the belt that is not being cleaned very well. This probably tends to show up when you are running mutilple prints of a page.
So it looks like to may need to replace your magenta toner and look at getting a transfer belt unit.

May 13, 2010 | HP Color LaserJet 2600n Printer

1 Answer

Thick black line on printed page


If the line runs the way that the paper does I.E. vertical on a portrait then it is dirty rollers normally.
If you open the lid and wipe the rollers this shoukd reduce or eliminate the black lines.

May 03, 2009 | Canon PIXMA® MP530 All-In-One Printer

1 Answer

Hp 4550 vertical line down center of page


From the service manual:


Vertical lines or streaks
 Check for a leak where light might be entering the printer.
 Check for circumferential scars on the photosensitive drum. If scars are present, replace the
drum cartridge if the line goes through all colors.
 Check for circumferential scars on the upper fusing roller. If scars are present, replace the upper
fusing roller if the line goes through all colors.
 Remove the imaging drum and inspect main charger or imaging drum for a contaminant, such as
a fiber, if the line goes through all colors.
CAUTION Do not expose the imaging drum to light for more than 15 seconds. The drum is light sensitive, and
exposure to light can cause permanent damage.
Vertical black lines
 The toner cartridge is defective.
 The toner cartridge is not seated properly.
 The fuser entrance is dirty.
 The fuser has scratches on it.
 This might be a repetitive defect. If so, the lines will repeat at a consistent interval down the page.
 The printer needs to be cleaned.
 There is a problem in the heating element.
Vertical white lines
 If white lines or streaks appear only in the black areas of the printed media, print several
configuration pages to clear the anomaly. If this does not clear the problem, check the sleeve
surface to confirm the defect, then replace the black toner cartridge.
 If white lines appear only in a particular color, try printing several configuration pages to clear the
error. If the error does not clear, check the sleeve surface to confirm the defect, then replace the
defective toner cartridge.
 There is a lack of toner or the toner cartridge is faulty.
 There is dirt in the laser path.
 The fuser is defective.
 A mirror in the laser scanner is dirty.

Apr 07, 2009 | HP Color LaserJet 4550 Printer

1 Answer

Streak down the center of the page


The streak is most likely the toner or the fuser

This is the test to determine toner or fuser issue.
Print a test page
When you hear the paper feed into the machine open the top or front to stop the machine
Remove the toner cart.
You should be able to see the page with printing on it. (This is before the page hits the fuser)
If you can see the defect on the page the problem is most likely the toner cartridge but NOT the fuser.
If the page is clean the problem is most likely the fuser.
Hope this helps

Mar 25, 2009 | HP LaserJet 2840 All-In-One Printer

1 Answer

Black line down middle of page


Clean the inside of the printer with a soft rag, be gentle and get as much toner up as you can, also your toner carttridge may be empty or the crum may be bad, start with a fresh toner carttridge and clean the printer out where the cartridge sits.

Dec 13, 2008 | Brother MFC-7820N Laser Printer

1 Answer

I am getting a faint line all down the page


Most likely you have a defective black toner cartridge. Open the front shutter on the black toner and look at the drum. If you see the drum has toner on it corresponding to the line down the page, you found the problem. If you can't see anything on the drum try printing a page and then interrupting the printout while the page is still in the printer. If you see the line on the page before it goes through the fuser, (the last roller thing on the top of the printer) then it still is the toner cartridge. If it occurs only after the fuser then it, the fuser, is at fault.

Jun 29, 2008 | HP Color LaserJet 2600n Printer

1 Answer

Prints a strip of black down middle of page


You need to open the small lid on each toner cartridge (to reveal the drum cylinder) and check if the line mark appears on any of them. If the case, you have some sort of contamination making a permanent mark on the affected cartridge. It can be a piece of paper, dirt, or loose part. If the toners are clean, your problem might be routed to the LSU (laser scanner unit) for which you need an Authorized Service Center to assist you.

Sep 17, 2007 | Samsung CLP-500N Laser Printer

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