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Try to print clean page , Print a cleaning page
During the printing process, paper, toner,
and dust particles can accumulate inside the printer and can cause print
quality issues such as toner specks or spatter, smears, streaks, lines
or repeating marks.
Follow these steps to clean the printer's paper path.
Load copier-grade paper (not bond, heavy, or rough paper).
On the printer's control panel, touch the Menu
Touch Configure Device
Touch Print Quality
Touch Process Cleaning Page
message appears on the printer control panel display while the cleaning
is taking place. The cleaning process takes a few minutes to complete.
Do not turn the printer off until the cleaning process has finished.
A page will be printed when the task is complete. Discard the page.
You might need to repeat the cleaning
process to thoroughly clean the printer. Print a few more pages to see
if the problem is resolved.
Not exactly sure what you are asking but if the problem is that you are getting fine lines down the paper (the copy is ok though) then take a real close look atr the glass platen (the plate glass in which the paper goes on. Assuming you are using the ADF (Automatic Document Feeder) area. This area is usually about an inch wide by 8.5" long. Look for either "White out" or black ink on the glass (it can be as small as a dot) clean this mark off with glass cleaner and you problem will be solved. Sometimes it helps to orientate your copy with the line on it to the machine to locate the mark causing the issue.
Drum was improperly cleaned; residual particles remain on drum. Try to manually clean the drum and do a cleaning procedure as in your manual.Replacing the cleaning module is the last thing to do if nother else works.
Sounds like your imaging drum, transfer rollers, or transfer belt could be contaminated. Using canned air, I'd try and blow out any sort of toner residue on these parts. They can often show up as dots or splotches when found on said parts.
Are the dark spots random and moves location with every copy or are they at exacly the same place on every copy? Random you will need to remove the drum/toner and use a blower to clean the inside of the machine,failing that replace the drum unit.If the spots don't move clean the top glass.Let me know
How do I clean white or black spots on printed documents?
Description:First make 10 to 15 copies of a blank, white sheet of paper.
If you still see the spots on printed documents after making multiple copies, clean the drum unit as follows:
Remove the drum unit and toner cartridge assembly, and then remove the toner cartridge from the drum unit.
the print sample in front of the drum unit so you will know the exact
position on the drum that is causing the poor print.
Turn the black gear on the drum as you check the surface of the OPC drum.
The OPC drum is photosensitive so do not touch it with your fingers.
you find the substance on the drum surface that matches the print
sample, gently dab the surface of the OPC drum with a cotton swab that
is lightly dampened with isopropyl alcohol.
Do not use a scrubbing or wiping motion because this might damage the drum.
Do not try to clean the surface of the OPC drum with a sharp
object, such as a ball-point pen, because this might cause permanent
damage to the drum unit.
If the print quality still has not improved you need to install a new drum.
There are lots of things that can cause this. Inspect the fuser assembly & verify that there isn't any teflon missing from the upper roller & that the lower roller is clean. The spots can also be caused by a build up of waste toner in the cleaning assembly, causing excess toner to be dropped on the copies as they pass under it. The cleaning assembly would need to be removed & cleaned to correct this. The spots are not always in the same place - but are they the same pattern? A worn drum assembly can cause spots that are usually a repeating pattern but located in different parts of multiple copies. Dirty corona wires can also cause random spots & rewiring the coronas would solve that.