HP LaserJet 4101

How to Identify and Fix Common Problems ?

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HP has determined that 99% of all lines and streaks on copies made by feeding the original documents through the ADF are caused by debris on the ADF glass. Debris can include dust, paper or toner dust, residue from sticky note adhesive, correction fluid or tape, ink, fingerprints, and more.
A thick black vertical line(s) that appear on the faxes you send, the images you scan into the computer and copies you make usually indicates a problem with the scanner unit and the machine will require service.
A Line or Line of Dots Always Appears in Your Scanned Images

The document table may need cleaning. Clean the document table. See Cleaning the Scanner. If you still have the problem, the document table may be scratched.

Black vertical lines that appear on the images you scan into the computer and copies you make are typically caused by dirt or correction fluid on ADF or scanner unit. The scanner unit is the mechanism that reads in the documents that are being copied or scanned.
Get a lint-free cloth, rubber gloves (so toner doesn`t get on your hands), some isopropyl alcohol, and a soft paintbrush and gently clean any rubber rollers you can easily reach. With a vacuum hoover out any loose toner particles. With a lint-free cloth very gently wipe the transfer belt (not all printers have one).
This issue is usually caused by foreign material inside the machine (paper dust, glue from labels or envelopes, paper clips, staples, etc.) sticking to or damaging the surface of the drum. This is typically resolved by cleaning and/or replacing the drum unit.
Most often the artifact (band) is caused by some- thing blocking the light from the reaching the CCD. This could be dust on lamp, dust on lens, dust on CCD (rare) or dust on film.
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.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

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 4101

changing from printing in photo black to black ink
ANSWER : You can change the black ink cartridge and choose either Matte Black or Photo Black.You will need to use the Black Ink Conversion Kit that came with your printer. The kit includes three conversion cartridges (yellow, magenta, and cyan), which are used to reduce the amount of ink consumed in the conversion. dissertation writing service

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HP LaserJet 4101

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 4101

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 4101

Prints blank pages, won't print from computer
ANSWER : Don’t know why you replaced the fuser, but assuming you had print before, then it must have been something you did during the procedure. Only thing I can suggest is to recheck your work. Just because you reinstalled a connector doesn’t mean that it is seated firmly enough to work. Any flat ribbon connectors that you removed and reinstalled, check to see that the contacts are all flat and not peeled back.

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HP LaserJet 4101

C1660w black printing light
ANSWER : Have someone fixed this? I have the same problem. Please help.

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HP LaserJet 4101

Canon i560 Will not print black
ANSWER : Dang, it worked for me then wentback to normal (not working) after the test page. Oh well not bad for a 10 year old bubble jet.

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HP LaserJet 4101

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 4101