How to clean print heads?

SOURCE: HP Deskjet F380 won't print

i think the inside printer have dirt or obstacles that blocken the cartridges while printing.
try to clean manually the printer by using powerful air blower,repeatedly.

SOURCE: HP D7460 printing blank pages, no error message

Just needed to be unplugged (both at wall and at printer) for two minutes. Restarted and it worked fine.

SOURCE: the printer acts like it is printing, but doesnt actually print

1. Clean the scanner/copier glass and white scan backing on the inside of the top lid with glass cleaner. If there is any foreign material on the glass or white scan backing, the scanner will include it as part of the image resulting in extra pages. OR FOLLOW THESE STEPS This normally occurs because one of the ink cartridges is low on ink. To fix this, do the following:

1. Check the amount of ink remaining in the ink cartridges by checking the Estimated Ink Levels tab in the HP Toolbox. The HP Toolbox can be opened by one of the following methods:
   • To open the HP Toolbox click Start , click Programs ( All Programs in Windows XP), click Hewlett-Packard , locate and click the HP all-in-one product folder, and then click HP Toolbox .
   • If the HP Toolbox cannot be found using the above method, it can be opened from the HP Director. Click Settings , click Printer Settings , and then click Printer Toolbox .
   Replace any ink cartridge that is low on ink.
2. Print a self-test page from the all-in-one. If the colors are correct on the self-test page and are not faded or light, continue troubleshooting with Step 3. If one or more colors are incorrect, missing, or fade out, the ink cartridge should be replaced. To print a self-test page:
   1. Press the Setup or Menu button until Print Report appears in the display, and then press Enter .
   2. Press the Setup or Menu button until Self-Test appears in the display, and then press Enter .
3. If the colors are only slightly off, some all-in-ones have a Color Intensity setting that can be adjusted. Increase the Color Intensity slider to enhance the colors. If your all-in-one has this option, it can be found in the Copy screen when using the Director to setup the copy. For more information on this setting, review the copying information in the Reference Guide or click Help in the Director to view the help files.
4. When printing on some photo papers, the black areas may have a greenish cast when photo paper is the selected paper type. Try changing the paper type setting to HP Bright White paper or Plain paper.
5. Perform the steps listed in the Step 3 of the 'White lines through copies' section above to clean the ink cartridges and then make another copy to see if the problem still exists.
6. Service your product, if the problem still exists. (PLEASE TAKE NOTE OF QUESTION 6)

Jeremy Ness

• 85 Answers
• Posted on Apr 08, 2011

SOURCE: How can you clean print

just take out the ink cartridge and clean off the bottom of it, that is the print head. you may need to clean under the plastic piece that it sits in. That may have hair or fuzz on it that is dragging across print.

SOURCE: MY HP 8500A HAS STARTED

Solution one: Reset the product If there is static interference, or loose connections with the product, this can result in bands or lines in the copy, fax, or scan output. To resolve this issue, check the product connections and reset the product Press the Power button ( ) to turn on the product.Disconnect the power cord from the rear of the product.Unplug the power cord from the wall outlet.Wait 30 seconds.Plug the power cord back into the wall outlet. Reconnect the power cord to the rear of the product.Press the Power utton ( ) to turn on the product.Try to copy, fax, or scan again.If these steps resolved the issue , you do not need to continue troubleshooting.If the issue persists , continue to the next solution.
Solution two: Clean the scanner glass and scanner lid If the scanner glass or the white underside of the lid has fingerprints, smudges, lint, dust, or other debris, this can slow performance and affect copy and scan quality. To resolve this issue, clean the product.Before you begin, gather the following materials:Several clean, soft, lint-free cloths

Mild glass cleaner
CAUTION: Use only glass cleaner to clean the scanner glass. Do not use cleaners that contain abrasives, acetone, benzene, or carbon tetrachloride. These substances can damage the product. Avoid isopropyl alcohol (rubbing alcohol) because it can leave streaks on the glass.

1. Press the Power button ( ) to turn off the product.
2. Disconnect the power cord from the rear of the product.
3. Lift the scanner lid. Figure 3: Lift the scanner lid
   
4. Spray a clean, soft, lint-free cloth with mild glass cleaner.
   CAUTION: To protect the scanner, do not spray the glass cleaner directly on the glass.
5. Clean the scanner glass with the lint-free cloth. Figure 4: The scanner glass
   
6. Clean the glass strip next to the scanner glass with the lint-free cloth. Figure 5: The glass strip
   
7. Dry the scanner glass and the glass strip thoroughly with a clean, dry cloth or chamois to prevent spotting, and then dry the white underside of the scanner lid.
   NOTE: Do not use paper-based wipes or tissues that can leave fiber residue.
8. Clean the white underside of the scanner lid. Figure 6: The underside of the scanner lid
   
9. Close the scanner lid.
10. Reconnect the power cord to the rear of the product.
11. If the product does not turn on by itself, press the Power button ( ) to turn it on.
12. Try to copy, fax, or scan again.

• If these steps resolved the issue , you do not need to continue troubleshooting.
• If the issue persists , continue to the next solution.

1. Gather the following materials:
   • A clean, lint-free cloth, or any cloth that will not come apart or leave fibers
   • Distilled, filtered, or bottled water (tap water might damage the product)
2. Remove any documents from the document feeder tray.
3. Press the Power button ( ) to turn off the product.
4. Disconnect the power cord from the rear of the product.
5. Lift the cover of the ADF until it stops. Figure 7: Lift the ADF cover
   
6. Find the pick rollers and separator pad. Figure 8: Locations of the pick rollers and separator padLightly dampen a clean lint-free cloth with distilled or bottled water, and then squeeze any excess liquid from the cloth.
7. Use the damp cloth to wipe any residue off the separator pad.