HP LaserJet 4P
How to Identify and Fix Common Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced technical support :
If your laser printer is causing horizontal black lines you either have a problem with the optics or the drum. Cleaning the optics and replacing the drum should fix the problem in most cases.
The streaks or lines might be caused due to low ink levels in one or both ink cartridges. Check the ink levels using the HP Toolbox to determine if the ink cartridges are low on ink and need to be replaced. note: Ink level warnings and indicators provide estimates for planning purposes only.
If you notice white or dark lines in your prints (also called banding), try these solutions before you reprint: Run a nozzle check to see if any of the print head nozzles are clogged. Then clean the print head, if necessary. Make sure the paper type setting matches the type of paper you loaded.
When your printer leaves black lines, the lines indicate that there are excess toner powders on the rollers or transfer belt within the printer. As the paper is moved along by the rollers and transfer belt, any excess powder left on them can result in lines being left on the paper.
The band-shaped “stripes” are called “horizontal bands” or “banding.” Horizontal bands are caused by the subtle changes in the movement distance that occur when feeding the media depending on the media`s thickness. We recommend making corrections to match the media you are using.
Double printing can occur for several possible reasons including an improperly seated ink tank, a misaligned print head, and a dirty encoder stip. Select one of the links below to get detailed instructions to address the issue. Check that all ink tanks are seated properly. Refer to Replace an ink tank.
A cartridge may be running out of ink even if the graphic shows ink remaining (see the note at the start of this section). Lines or streaks always appear in printouts when the cartridges begin to run out of ink. Replace print cartridges that are out of ink or low on ink.
Go to the printer panel, click on Maintenance, then Paper Feed Adjust, then Adjust Print Quality, then select AUTO . Run another print after the pattern prints and scans. If the banding does not disappear you may have to go back through these steps and instead of AUTO, run the Manual Adjustment.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
LIGHT LINES ON PRINTED COPIES
ANSWER : You give us so little info to go on. Vertical lines, horizontal lines? On copies, on prints, on both?
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HP LaserJet 4P
Black line on printed copy
ANSWER : Have absolutely no idea what kind of machine you have so here’s the generic answer. Big copy glass, little copy glass to the left of it. Take window cleaner, put it on paper towel, clean little glass.
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HP LaserJet 4P
New ink cartridge won't print
ANSWER : What happens now?
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HP LaserJet 4P
Printer only printing every other line
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HP LaserJet 4P
canon mx320 copies have blk line down the right side of copies
ANSWER : If you are using the ADF feeder to make copies, then check the small glass on the left side. If there is any dirt or whiteout on the glass, it will result in a line down that spot. You can confirm it by looking at the copy that has the line. If it is dirt on the glass, the line won’t go all the way from top to bottom. There will be a margin on each end.
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HP LaserJet 4P
New Cartridges are not printing
ANSWER : Check and see at the base of the cartridge whether it has dried ink. on the off chance that so it won’t print in light of the fact that the dried ink is obstructing the way. utilize a cotton material and attempt to wet and wipe out the dried ink.coffee channels function admirably to clean print cartridge.
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HP LaserJet 4P
Black line printing in the middle of the page from top to bottom
ANSWER : Take out the toner cartridge and look at the drum. If you see the line, replace the cartridge. If you don’t, then you need to replace the fuser assembly.
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HP LaserJet 4P
when printing front and back, the front will print well but the back will fade
ANSWER : It happens because second side voltage is much higher and the board breaks. Are you getting this issue in auto duplex only, or same error you are getting when you print second side manually?
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HP LaserJet 4P