HP LaserJet 4P

How to Identify and Fix Common Problems ?

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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.
Dirt, dust, or toner accumulated on the rollers or transfer belt can cause smears and smudges on the paper as it goes through the paper. Cleaning your printer, especially its rollers, is one of the possible solutions to fix black marks on paper.
A Machine Identification Code (MIC), also known as printer steganography, yellow dots, tracking dots or secret dots, is a digital watermark which certain color laser printers and copiers leave on every printed page, allowing identification of the device which was used to print a document and giving clues to the …
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.
When it is not fusing correctly, toner can become smudged on the paper if non-fused toner sticks to the rollers. In the case of a bad drum or leaking toner, it is best to replace the entire toner cartridge. If you suspect a bad fuser is at fault, it is best to have the laser printer serviced at a repair shop.
Dampen the cotton swab with the water or alcohol (should be damp only – squeeze or blot out any excess). Gently clean the surface of the print head, removing any dried ink, dirt or fibers. If any wet ink is left, blot it off with a dry swab or lint-free towel. Repeat steps 1-4 for any other printheads.
Check the Paper Setting of Your Printer

Photo Paper setting or Matte-Coated Paper setting causes more ink to be printed. If the printing paper loaded in the inkjet printer doesn`t match the paper setting, it can cause ink bleeding, smudging, and smearing.

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.
A pixel is the smallest area of an image. It is also referred to as pixel element.
There are numerous possible causes for a printer that`s randomly producing blanks. The most common ones are empty ink cartridges, improper cartridge installation, and congested nozzles. Driver and software issues can sometimes cause this problem as well.
Faint, streaky or spotty prints are all common signs of a clog but a simple cleaning can usually get your HP ink cartridges working again. Printheads clog due to infrequent cartridge use. If you regularly go a few weeks without printing, your cartridges will eventually dry out and need to be replaced.
The best way to prevent smearing is to make sure you give the ink time to dry before picking up the copy or copies. It doesn`t take long, maybe 10-15 seconds. If that doesn`t work, try changing your printer settings for a lower quality print job. You generally have a choice, Best, Normal or Draft.
This is when your printer`s pages come out dirty, or the toner powder is scattered all over the inside of the printer. A leaking toner cartridge is an important problem to fix because if left unsolved, the loose toner powder can cause more damage than is necessary.
The best way to prevent smearing is to make sure you give the ink time to dry before picking up the copy or copies. It doesn`t take long, maybe 10-15 seconds. If that doesn`t work, try changing your printer settings for a lower quality print job. You generally have a choice, Best, Normal or Draft.
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.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

HP Color Laserjet blank pages – only jetdirect page
ANSWER : What about the engine test? To do that, drop down the front tray. Feel around on the left side at the top and you’ll feel a little plastic dongle. If you lift up on that it will initiate an engine test page. That will be a page containing lines of each color.

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HP LaserJet 4P

HP laserjet 3100 multiple page feed fixed!
ANSWER : Can you tell me what kit you are referring to because I have the exact problem with my 3100 printer?

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HP LaserJet 4P

HP laserjet toner wiper blade fix?
ANSWER : I’m having trouble locating wiper blades & doctor blades for sale online. Can anyone suggest sources, please? I have several HP 92298X cartridges that need them.

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HP LaserJet 4P

HP LaserJet 2200D won't print configuration page
ANSWER : Find someone with a HP LaserJet 4100 and you can configure the card to the IP you want:

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HP LaserJet 4P

HP 4250, error 54.1 Remove sealing tape from toner
ANSWER : I am having the same problem as everyone else can someone send me a new link or the pdf

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HP LaserJet 4P

Resetting of chip for hp toner Q6000A
ANSWER : HP Color Laser Jet 1600 – Thanks for all the above information. Even though the 1600 is a different printer, I followed the above: “…go to “System Configuration”; then to “Print Quality”; I then get a choice of “Replace Supplies” and then “Overide Out”…” Selecting “Overide Out” got my 1600 back to printing, although I did have do perform the steps TWICE before it seemed to take affect. Not sure what was going on, but I’m happy that people put the information out there for the rest of us to have.

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HP LaserJet 4P

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

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HP LaserJet 4P

Toner won't adhere to page ONLY when printing from the MAIN tray
ANSWER : When you print from the manual tree, it prints at half speed. The slower speed means the page is in the fuser longer. Replace the fuser.

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HP LaserJet 4P