Question about HP Office Equipment & Supplies
This print quality problem indicates that a print head nozzle is clogged, this is especially true if your printer has been inactive for some time.
You may need to clean the print head if the ink cartridge has been stored, left empty or not been used for a long period of time. This can make the nozzles becomes clogged with dried ink residue hindering the flow of new ink from the ink tank.
To unclog the print head you need to clean it - either by using the maintenance function in your printer software or by cleaning the nozzles with a special cleaning cartridge suitable for your printer model.
You can try to clean the print head by using the cleaning program that most modern printers have. The cleaning program performs a print head cleaning and several nozzle checks. The nozzle print check should show a correct nozzle printing pattern with lines aligned, no missing lines and no white horizontal color streaks.
Some printers also have a deep cleaning program that does what it says i.e. goes deeper than what the normal cleaning program does. Please note that the deep cleaning program should not be performed more than three times in a row in a short period of time as this might otherwise damage your printer.
While performing the cleaning program, ink will be taken from the ink tank. The amount of ink used in this process depends on how many times you run the cleaning program. You can lower the cost of running the printers cleaning program by installing a cleaning cartridge.
Repetitive defects are almost always caused by the toner cartridge or fusing assembly, and occasionally the transfer roller. If you have an extra toner cartridge or fusing assembly, swap them to see if the problem goes away. Otherwise you can do a half-way test.
A half-way test is a simple test to determine where the print defect is occurring in the printer. As paper travels through the printer, it first passes under the toner cartridge and then into the fusing assembly. Color printers are a bit more complex but the concept remains the same. The idea is to interrupt printing before the paper gets in the fuser. What you do is print a page and open the toner lid when you think the paper is underneath the toner cartridge. This will stop printing and you can pull the toner cartridge out and look at the partially printed paper. It may take a few tries to time it so the paper stops under the toner but not completely into the fuser. If the repetitive print defect is on the page before the paper reaches the fuser, then the fuser is not the problem. It’s probably your toner cartridge or maybe the transfer roller.
Another simple check is to remove the fuser and look at the long rollers in the fuser. If you see toner baked on the rollers or any other gunk then you need to replace the fuser. Fusers with plastic fixing films, also called sleeves, can tear. This usually causes a smear of toner all the way down the page where the sleeve is ripped.
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Posted on Feb 01, 2010
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Posted on Jan 02, 2017
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