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I have done all the cleaning it says to do and I still get a line right down all the pages. I checked the toner and drum and they seemed ok. It is a sharp and we do a small amount of copies per month. It is at the museum that we do the research for people and we are all volunteers so need some help with it. Thank you, Rose
Didi you clean the copy glass and small glass of document feeder? Usually there is some leftowers of white correctour or dust... If you do not have lines on drum, it also could be that you have bad fixing roller.
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I could be wrong, but I think it's in the toner cartridge. The drum - the roller that the image is formed on - has a soft, plastic blade rubbing against it to clean off excess toner after each print. If a clump of toner gets stuck under the blade, a line is printed down the page where that part of the drum isn't cleaned as well. Between prints, the drum keeps turning, and may be able to clean itself better than in a single revolution. It's a theory, anyway. Pull out your toner cartridge and look at the drum to see if there's a black line around it at one end. You can't get to the cleaning blade without risking ruining the drum and the cartridge; the cure is just to get a new cartridge. If yours is fairly new, take it back to the store that sold it to you, along with a print sample. They might exchange it. If the drum doesn't have a line around it, you can test it by deliberately jamming the machine. It's scary, but if you've unjammed jams before, you can do it again. Start a print job, then kill the power when you think the page is right in the middle of the printer. Open the printer and remove the toner cartridge. Look for that black line on the page before it reaches the drum, between the drum and the fuser, and past the fuser. (The fuser is the pair of hot rollers that pinch the page tightly and melt the powdered image into the paper. Any part of the image that hasn't made it into the fuser is still powder and will rub off.) If the line doesn't show up until after the hot rollers, then I was wrong about the toner cartridge, and you're looking at a fuser problem.
A dark line on the hp 2500 series can come from the drum You can't clean it at home), it can come from a toner cartridge, from the fuser unit and from the optics. Step one - check if the line in all colors, run copy quality check through Menu and diagnostics, if the line is only on one color your problem is the toner cartridge. Step two - if the line is on all colors, take the drum unit out and look at the drum, if you see the line on the drum you need to replace the drum unit. Step three - stop a print in during the printing process by turning the printer off, take out the drum and look at the printed paper under the drum, if the printed page is clear of line your problem is in the fuser. Good luck.
Vertical lines on the copy usually indicate a dirty drum or Corona wire. The Corona wire should be cleaned each time you replace the toner cartridge. This is done by moving the Corona tab back and forth across the wire several times to clear it of debris. You may also want to check the drum for debris. Holding the copied page to where it feeds out and lining up the line or mark on the page will give you an idea as to where the dirt may be. Best of luck with your printing issue. Greg
Try cleaning the laser **** glass. If dust or toner is on the glass, you won't get proper or even charge due to this condition. You need to remove the photoconductive drum to check this.
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.
Try running a cleaning sheet through the printer. Remove the drum and check you waste toner (if that is built-in to your drum then skip this). If that gets full, then some of the bad toner can spill out creating lines/smuges. I would also use compressed air to blow out the inside of the printer where the toner/drum goes. That will help remove anything that is left behind after a replacement.
Also, check the settings in the print server for anything that will clean the printer/correct horizontal lines.
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