HP LaserJet 4100
We use our LaserJet 4100 to run reports. We recently had a paper jam up on the printer. We tried pulling the paper out from the back but wouldn’t budge so we had to pull it out from the front. After that happened is when we noticed the black lines on the pages. We changed out toner but didn’t help. We took apart the back section of the printer and blew it out with canned air that you clean your keyboard with. We had some small black film that came out. We are not sure what that came from.
Experienced technical support provide their insights in answering this question :
The black film is the upper fuser roller. You need to replace the fuser unit. Not hard to do. Remove the back “door” and flip down the two blue levers. The fuser will slide straight out.
How to Identify and Fix Common printer Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced technical support :
This happens when the rollers or the transfer belt inside the printer get dirty or covered in excess dirt, ink or toner powder, and as the paper is moved through the printer the `tracks` are being left on the page. This is normally the case when the tracks on the page are located at either end.
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.
Dots are typically caused by foreign material inside the machine (for example, paper dust, glue from labels or envelopes, paper clips, staples) sticking to or damaging the surface of the drum. Toner builds up on or sticks to these areas on the drum and creates black dots on the printed pages.
If there is a line, the print cartridge is most likely your culprit. Replace the defective print cartridge with a new one. Place the print cartridge back in the machine. Print a test document to see if issue is resolved.
A printer printing lines on the page are normally caused by a blocked, dirty, or damaged print head. Blocked ink cartridge nozzles, or not removing protective seals correctly when you installed a new ink cartridge can also cause missing lines of print.
Vertical Streaks or Lines
Vertical white lines also can signal an obstruction that prevents the laser from imaging pages correctly. Resolving that problem can require cleaning elements of the laser assembly or replacing it altogether.
Place enough baking soda onto the paper so that it completely covers the stain and leave overnight. The baking soda should be in a relatively tall pile. If you can still see the paper through the baking soda, add more! Other non-staining absorbent powders will also work for this step.
A vertical line is always a line that runs from top to bottom, or, from bottom to top. Standing lines are also a type of vertical line that runs vertically. We usually draw vertical lines between the bases of a trapezoid or a parallelogram….
A vertical line is a line extending up and down. On a table (like the one shown to the right), the legs of the table are vertical lines. The y-axis is an example of a vertical line.
A printer printing lines on the page are normally caused by a blocked, dirty, or damaged print head. Blocked ink cartridge nozzles, or not removing protective seals correctly when you installed a new ink cartridge can also cause missing lines of print.
A printer might not print black ink if it has not been calibrated. Thus, calibrating an Hewlett-Packard printer by aligning its printhead might fix its printing. Most HP printers will include an Align Printhead option on their Printer Maintenance or Tools control panel menus that users can calibrate with.
The problem may be due to a simple issue like printer paper quality or ink/toner cartridge wear, or it could be a more serious problem that requires professional repair.
A printer might not print black ink if it has not been calibrated. Thus, calibrating an Hewlett-Packard printer by aligning its printhead might fix its printing. Most HP printers will include an Align Printhead option on their Printer Maintenance or Tools control panel menus that users can calibrate with.
The problem may be due to a simple issue like printer paper quality or ink/toner cartridge wear, or it could be a more serious problem that requires professional repair.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Black line down right side of page
ANSWER : The black film is the upper fuser roller. You need to replace the fuser unit. Not hard to do. Remove the back “door” and flip down the two blue levers. The fuser will slide straight out.
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HP LaserJet 4100
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 4100
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 4100
Smudges down right side of paper
ANSWER : That doesn’t make any sense. Sheets that feed from the manual feed or the cassette tray both converge before the toner cartridge. That would mean that the smudges would somehow be put on the paper as it was feeding upwards from the tray. There is nothing in the printer that could account for that happening.
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HP LaserJet 4100
smudge line across the page 3/4 way down
ANSWER : Only 2 things can cause it, the toner or the fuser. To determine which, you do a half-stop test. To do so, put a sheet of paper in the manual feed tray. Then send a print job while you watch the page. You want to open the lid about the same time that 3/4 of the page has just passed by the toner cartridge. Might take a few tries. This will stop the area with the problem after it passes the toner cartridge, but before it hits the fuser. You look at the paper and if you see the defect, then it’s caused by the toner cartridge. If not, then it is being put on by the fuser. It seems a bit strange to me because normally a defect like that will occur 3 times per page, which is about the circumference of the toner drum or fuser sleeve.
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HP LaserJet 4100
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 4100
black smudge lines
ANSWER : Not knowing if the drum is OEM or remanufactured or if it is way expired, only thing I can suggest is looking at it. Take the toner out and turn it manually with your thumbs on the gear. The drum should be clean all the way around.
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HP LaserJet 4100
Black Marks on top/bottom of page
ANSWER : Heres the example again
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HP LaserJet 4100