HP LaserJet 4

How to Identify and Fix Common Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

This looks like the paper is not aligned in the tray. Try to move the paper to the side it`s not printing and try again. Hope this will help.
What`s happening is that the drum or rollers could have a fingerprint or dirt that is smudging the toner on the page as it passes through to the fuser. It is normally caused by the rollers. If the marks are always in different places, then it`s most likely to be the drum.
Smears and smudges on the paper can be caused by dirt, dust, or toner accumulated on the rollers or transfer belt as it passes through the paper. Cleaning your printer, particularly the rollers, is one of the options for removing black markings from paper.
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.
Your copies may be cut off if the paper is loaded incorrectly in the Automatic Document Feeder (ADF) or paper tray, or if the paper size setting is not programmed correctly.
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.
Streaks and unwanted lines could mean that the printer heads are out of alignment. There`s an alignment tool in the printer`s control panel. If that`s not the issue then the printer is dirty. Printer ink stripes may appear along the edges of the paper, which means there`s ink on the rollers and other parts.
A Bad Toner Cartridge

Usually associated with compatible or re-filled cartridges, a leaky cartridge deposits toner inside your printer and onto your paper in places that it`s not intended, resulting in black spots.

Laser printers work by using high heat to fuse powdered ink to paper. There is no bleeding effect, because laser toner does not absorb into paper.
In the Job Settings tree, select Advanced settings, Paper, Layout/Margins. Then use the Select margins drop-down menu to set the margins.
Make sure you selected the correct paper size settings in your printing program and printer software. Make sure you selected the correct margins for your paper size in your printing program. Make sure your paper is positioned correctly for feeding into the printer.
Click Margins, or navigate to the screen to change the page format and adjust margins. Increase the top and bottom margins to a minimum of 13 mm (0.5″). You might need to increase this amount slightly if the issue is not resolved the first time.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

My printer feeds through one piece of paper all the way and then a half piece of paper and stops. I pull out the paper to stop the paper jam and then it prints but sounds rough. After printing, it doesn't feed the paper all the way through.
ANSWER : And the first 2 sheets, the full and half sheet that go through first, are blank.

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HP LaserJet 4

HP laser jet 3015 "Upgrade Error Call HP Support"
ANSWER : rgtr

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HP LaserJet 4

Suggestions for previous generation of HP color laser jets?
ANSWER : You can just replace the drum wiper blades. http://www.uninetimaging.com/c/539/hp-8500-8550-ep-82

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HP LaserJet 4

HP Laser Printer error 13 – paper jam
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HP LaserJet 4

Paper Mismatch Error on HP C6150, C6180 or C7280
ANSWER : Thanks a lot for your informational post. I had been working online and making money through paypal generator if you also want to know the secrets behind what you can do with this free paypal money adder visit the website and take away cash in your account.

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HP LaserJet 4

HP Laser Jet 4250 13.01.00 Jam in Tray 2
ANSWER : did you check if there’s multiple feeding while pulling papers

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HP LaserJet 4

hp 8600 pro when power on, paper jam message appear but there is no paper jam in the tray
ANSWER : Hp 8180 Photosmart All In One code keeps says paper jam and carriage jam when neither are jammed. I followed all the recommended things to do. I live in Raleigh NC any place to take this or any suggestion.

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HP LaserJet 4

HP Laserjet 6MP wont feed paper
ANSWER : I had a similar paper pickup problem on laserjet 6mp. The printer would go through start-up sequence fine but when it received a print job you could here the main gears/rollers turning but no clicking from paper pickup solenoid, then eventually error lights would come one . I incorrectly assumed it was an error with the paper pickup mechanism and wasted a whole day taking the printer apart and replacing the paper pick mechanism. Long story short, if I had bothered to figure out the secondary error light codes from the start, I would have realized it was just a bad fuser and would not have wasted so much time.

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HP LaserJet 4